AndroidStudio——今日头条（可以实时获取数据的app）
今日头条包含以下模块：
首页 视频 天气 和 我的
其中 首页用于加载实时的新闻频道及内容，可以实现点击图片查看图片详情，并且可以实现内容的收藏与取消收藏
视频模块暂时未加入任何内容
天气模块可以实现天气的实时更新，最多可以显示最近三天的天气情况
我的 模块中 点击收藏，可以查看收藏的新闻内容
**Activity代码：**
MainActivity
public class MainActivity extends AppCompatActivity {
private FragmentTabHost ft;
private String[] str = {"首页", "视频", "天气", "我的"};
private int[] imgRes = {R.drawable.home, R.drawable.video, R.drawable.topic,
R.drawable.my};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ft = (FragmentTabHost) findViewById(R.id.ft);
getSupportActionBar().hide();
init();
}
public void init() {
//装配
ft.setup(this, getSupportFragmentManager(), R.id.fl);
Fragment home = new HomeFragment();
//TabSpec标签说明
TabHost.TabSpec tabSpec0 =
ft.newTabSpec(str[0]).setIndicator(getView(0));
ft.addTab(tabSpec0, home.getClass(), null);
Fragment video = new VideoFragment();
TabHost.TabSpec tabSpec1 =
ft.newTabSpec(str[1]).setIndicator(getView(1));
ft.addTab(tabSpec1, video.getClass(), null);
Fragment topic = new TopicFragment();
TabHost.TabSpec tabSpec2 =
ft.newTabSpec(str[2]).setIndicator(getView(2));
ft.addTab(tabSpec2, topic.getClass(), null);
Fragment my = new MyFragment();
TabHost.TabSpec tabSpec3 =
ft.newTabSpec(str[3]).setIndicator(getView(3));
ft.addTab(tabSpec3, my.getClass(), null);
}
public View getView(int i) {
View v = getLayoutInflater().inflate(R.layout.tab_layout, null);
ImageView iv = (ImageView) v.findViewById(R.id.iv);
TextView tv = (TextView) v.findViewById(R.id.tv);
iv.setImageResource(imgRes[i]);
tv.setText(str[i]);
return v;
}
}
ContentActivity
public class ContentActivity extends AppCompatActivity {
private WebView wv;
private ImageView back;
private TextView title, collection;
private boolean isExisits;
private NewsDao newsDao;
private String titles;
//全局变量自动赋值 局部变量不可以
private MyNews news;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_content);
getSupportActionBar().hide();
wv = (WebView) findViewById(R.id.wv);
back = (ImageView) findViewById(R.id.back);
title = (TextView) findViewById(R.id.title);
collection = (TextView) findViewById(R.id.collection);
//getIntent()是将该项目中包含的原始intent检索出来
//将检索出来的intent赋值给一个Intent类型的变量intent
Intent intent = getIntent();
String html = "";
titles = "";
if (intent != null) {
news = intent.getParcelableExtra("news");
html = news.getHtml();
titles = news.getTitle();
}
title.setText(titles);
WebSettings ws = wv.getSettings();
//支持放大
ws.setSupportZoom(true);
//显示放大缩小的控件 一个加号一个减号
ws.setDisplayZoomControls(true);
ws.setJavaScriptEnabled(true);
ws.setDefaultTextEncodingName("utf-8");
//放大多少倍
//ws.setTextZoom(20);
wv.loadDataWithBaseURL("", html, "text/html", "utf-8", "");
//设置内容的背景颜色
wv.setBackgroundColor(getResources().getColor(R.color.background));
newsDao = new NewsDao(this);
//判断新闻是否收藏过
checkNews(titles);
back.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
collection.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(isExisits){
newsDao.deleteNews(news.getTitle());
collection.setText("取消收藏");
}else {
newsDao.addNews(news);
collection.setText("收藏");
}
checkNews(news.getTitle());
}
});
}
public void checkNews(String title) {
MyNews myNews = newsDao.searchNews(title);
// MyNews myNews = new MyNews();
if (myNews == null) {
collection.setText("收藏");
isExisits = false;
} else {
collection.setText("取消收藏");
isExisits = true;
}
}
}
ImgActivity
public class ImgActivity extends AppCompatActivity {
private PhotoViewPager pvp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_img);
getSupportActionBar().hide();
pvp = (PhotoViewPager) findViewById(R.id.pvp);
Intent intent = getIntent();
String imgUrls = intent.getStringExtra("img");
List pvList = new ArrayList<>();
List imgList = paserImageList(imgUrls);
for (int i = 0; i < imgList.size(); i++) {
PhotoView pv = new PhotoView(this);
pv.setScaleType(ImageView.ScaleType.CENTER_CROP);
Glide.with(this).load(imgList.get(i)).into(pv);
pvList.add(pv);
}
pvp.setAdapter(new MyViewPagerAdapter(pvList));
}
public List paserImageList(String imgList) {
List img = new ArrayList();
try {
JSONArray ja = new JSONArray(imgList);
for (int i = 0; i < ja.length(); i++) {
JSONObject obj = (JSONObject) ja.get(i);
if (obj.has("url")) {
img.add(obj.getString("url"));
}
}
} catch (JSONException e) {
e.printStackTrace();
}
return img;
}
public class MyViewPagerAdapter extends PagerAdapter {
private List myData;
public MyViewPagerAdapter(List myData) {
this.myData = myData;
}
@Override
public int getCount() {
return myData.size();
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == object;
}
//自己写的
@Override
public Object instantiateItem(ViewGroup container, int position) {
container.addView(myData.get(position));
return myData.get(position);
}
//自己写的
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView(myData.get(position));
}
}
} CollectionActivity
public class CollectionActivity extends AppCompatActivity {
private ListView lv;
private List list;
private NewsDao newsDao;
private NewsBaseAdapter na;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_collection);
lv = (ListView) findViewById(R.id.lv);
list = new ArrayList<>();
na = new NewsBaseAdapter(list, this);
lv.setAdapter(na);
newsDao = new NewsDao(this);
getList();
}
public void getList() {
//先清空 避免叠加
list.clear();
//list=List不可用 由于不能触发na.notifyDataSetChanged();所以导致布局加载不出数据来
list.addAll(newsDao.searchNews());
na.notifyDataSetChanged();
}
@Override
protected void onStart() {
super.onStart();
getList();
}
}
**adapter 代码**
MyTabHostAdapter
public class MyTabHostAdapter extends FragmentPagerAdapter {
private List list;
public MyTabHostAdapter(FragmentManager fm, List list) {
super(fm);
this.list = list;
}
@Override
public Fragment getItem(int position) {
return list.get(position);
}
@Override
public int getCount() {
return list.size();
}
} NewsBaseAdapter
public class NewsBaseAdapter extends BaseAdapter {
private List myNews;
private Context context;
//常量必须从0开始 并且不能跳着来不能0,2,4...
private final int TYPE0 = 0;
private final int TYPE1 = 1;
private final int TYPE2 = 2;
private final int TYPE3 = 3;
public NewsBaseAdapter(List myNews, Context context) {
this.myNews = myNews;
this.context = context;
}
@Override
public int getCount() {
return myNews.size();
}
@Override
public Object getItem(int position) {
return myNews.get(position);
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
final ViewHolder vh;
int type = getItemViewType(position);
if (convertView == null) {
vh = new ViewHolder();
if (type == 3) {
convertView = LayoutInflater.from(context).inflate(R.layout.my_news_layout3, null);
vh.title = (TextView) convertView.findViewById(R.id.title);
vh.pubDate = (TextView) convertView.findViewById(R.id.pubDate);
vh.source = (TextView) convertView.findViewById(R.id.source);
vh.img = (ImageView) convertView.findViewById(R.id.img);
vh.img2 = (ImageView) convertView.findViewById(R.id.img2);
vh.img3 = (ImageView) convertView.findViewById(R.id.img3);
vh.img.setOnClickListener(new ClickLisner(position));
vh.img2.setOnClickListener(new ClickLisner(position));
vh.img3.setOnClickListener(new ClickLisner(position));
convertView.setTag(vh);
} else if (type == 2) {
convertView = LayoutInflater.from(context).inflate(R.layout.my_news_layout2, null);
vh.title = (TextView) convertView.findViewById(R.id.title);
vh.pubDate = (TextView) convertView.findViewById(R.id.pubDate);
vh.source = (TextView) convertView.findViewById(R.id.source);
vh.img = (ImageView) convertView.findViewById(R.id.img);
vh.img2 = (ImageView) convertView.findViewById(R.id.img2);
vh.img.setOnClickListener(new ClickLisner(position));
vh.img2.setOnClickListener(new ClickLisner(position));
convertView.setTag(vh);
} else if (type == 1) {
convertView = LayoutInflater.from(context).inflate(R.layout.my_news_layout1, null);
vh.title = (TextView) convertView.findViewById(R.id.title);
vh.pubDate = (TextView) convertView.findViewById(R.id.pubDate);
vh.source = (TextView) convertView.findViewById(R.id.source);
vh.img = (ImageView) convertView.findViewById(R.id.img);
vh.img.setOnClickListener(new ClickLisner(position));
convertView.setTag(vh);
} else {
convertView = LayoutInflater.from(context).inflate(R.layout.my_news_layout, null);
vh.title = (TextView) convertView.findViewById(R.id.title);
vh.pubDate = (TextView) convertView.findViewById(R.id.pubDate);
vh.source = (TextView) convertView.findViewById(R.id.source);
convertView.setTag(vh);
}
} else {
vh = (ViewHolder) convertView.getTag();
}
//通过这一句知道要加载哪个频道的news
MyNews news = myNews.get(position);
if (type == 3) {
vh.title.setText(news.getTitle());
vh.source.setText(news.getSource());
vh.pubDate.setText(news.getPubDate());
List list = paserImageList(news.getImageurls());
if (list.size() == 3) {
Glide.with(context).load(list.get(0)).into(vh.img);
Glide.with(context).load(list.get(1)).into(vh.img2);
Glide.with(context).load(list.get(2)).into(vh.img3);
}
} else if (type == 2) {
vh.title.setText(news.getTitle());
vh.source.setText(news.getSource());
vh.pubDate.setText(news.getPubDate());
List list = paserImageList(news.getImageurls());
if (list.size() == 2) {
Glide.with(context).load(list.get(0)).into(vh.img);
Glide.with(context).load(list.get(1)).into(vh.img2);
}
} else if (type == 1) {
vh.title.setText(news.getTitle());
vh.source.setText(news.getSource());
vh.pubDate.setText(news.getPubDate());
List list = paserImageList(news.getImageurls());
if (list.size() == 1) {
Glide.with(context).load(list.get(0)).into(vh.img);
}
} else {
vh.title.setText(news.getTitle());
vh.source.setText(news.getSource());
vh.pubDate.setText(news.getPubDate());
}
convertView.setOnClickListener(new ClickLisner(position));
return convertView;
}
public class ClickLisner implements View.OnClickListener {
private int position;
//在类里生成构造 把position传进来
public ClickLisner(int position) {
this.position = position;
}
@Override
public void onClick(View v) {
int id=v.getId();
if(id==R.id.img||id==R.id.img2||id==R.id.img3){
Intent intent=new Intent(context, ImgActivity.class);
intent.putExtra("img",myNews.get(position).getImageurls());
context.startActivity(intent);
}else{
MyNews news = myNews.get(position);
// Log.d("======", news.getHtml());
Intent intent = new Intent(context, ContentActivity.class);
//MyNews要实现序列化
intent.putExtra("news", news);
context.startActivity(intent);
}
}
}
public class ViewHolder {
TextView pubDate;
TextView title;
ImageView img;
TextView source;
ImageView img2;
ImageView img3;
}
@Override
public int getItemViewType(int position) {
List list = paserImageList(myNews.get(position).getImageurls());
if (list.size() == 3) {
return TYPE3;
} else if (list.size() == 1) {
return TYPE1;
} else if (list.size() == 2) {
return TYPE2;
} else {
return TYPE0;
}
}
@Override
public int getViewTypeCount() {
return 4;
}
public List paserImageList(String imgList) {
List img = new ArrayList();
try {
JSONArray ja = new JSONArray(imgList);
for (int i = 0; i < imgList.length(); i++) {
JSONObject obj = (JSONObject) ja.get(i);
if (obj.has("url")) {
img.add(obj.getString("url"));
}
}
} catch (JSONException e) {
e.printStackTrace();
}
return img;
}
} NewsFragmentAdapter
public class NewsFragmentAdapter extends FragmentPagerAdapter {
private List fragmentList;
private List titles;
public NewsFragmentAdapter(FragmentManager fm, List fragmentList, List titles) {
//public NewsFragmentAdapter(List fm,FragmentActivity fragmentList) {
super(fm);
this.fragmentList = fragmentList;
this.titles = titles;
}
@Override
public Fragment getItem(int position) {
return fragmentList.get(position);
}
@Override
public int getCount() {
return fragmentList.size();
}
@Override
public CharSequence getPageTitle(int position) {
return titles.get(position);
}
} **dao文件**
NewsDao
public class NewsDao {
private MyDbHelper myDbHelper;
public NewsDao(Context context) {
myDbHelper = new MyDbHelper(context);
}
//收藏新闻
public void addNews(MyNews myNews) {
SQLiteDatabase db = myDbHelper.getWritableDatabase();
ContentValues cv = new ContentValues();
cv.put("title", myNews.getTitle());
cv.put("pubDate", myNews.getPubDate());
cv.put("source", myNews.getSource());
cv.put("html", myNews.getHtml());
cv.put("imageurls", myNews.getImageurls());
db.insert("news", null, cv);
db.close();
}
//查询所有收藏
public List searchNews() {
SQLiteDatabase db = myDbHelper.getReadableDatabase();
Cursor cs = db.query("news", null, null, null, null, null, null);
MyNews myNews = null;
List list = new ArrayList<>();
while (cs.moveToNext()) {
myNews = new MyNews();
// cs.getColumnIndex("_id") id 这一列结果中的下标
myNews.setTitle(cs.getString(cs.getColumnIndex("title")));
myNews.setSource(cs.getString(cs.getColumnIndex("source")));
myNews.setPubDate(cs.getString(cs.getColumnIndex("pubDate")));
myNews.setHtml(cs.getString(cs.getColumnIndex("html")));
myNews.setImageurls(cs.getString(cs.getColumnIndex("imageurls")));
list.add(myNews);
}
cs.close();
db.close();
return list;
}
//查询一条收藏
public MyNews searchNews(String title) {
SQLiteDatabase db = myDbHelper.getWritableDatabase();
Cursor cs = db.query("news", null, "title = ? ", new String[]{title}, null, null, null);
MyNews myNews = null;
if (cs.moveToNext()) {
myNews = new MyNews();
// cs.getColumnIndex("_id") id 这一列结果中的下标
myNews.setTitle(cs.getString(cs.getColumnIndex("title")));
myNews.setSource(cs.getString(cs.getColumnIndex("source")));
myNews.setPubDate(cs.getString(cs.getColumnIndex("pubDate")));
myNews.setHtml(cs.getString(cs.getColumnIndex("html")));
myNews.setImageurls(cs.getString(cs.getColumnIndex("imageurls")));
}
cs.close();
db.close();
return myNews;
}
// 取消收藏
public void deleteNews(String title) {
SQLiteDatabase db = myDbHelper.getWritableDatabase();
db.delete("news", "title= ? ", new String[]{title});
db.close();
}
} NewsCacheDao
public class NewsCacheDao {
private Context context;
private Dao newsDao;
private DatabaseHelper helper;
public NewsCacheDao(Context context) {
this.context = context;
helper = (DatabaseHelper) DatabaseHelper.getHelper(context);
try {
newsDao = helper.getDao(MyNews.class);
} catch (SQLException e) {
e.printStackTrace();
}
}
public void addNews(MyNews news) {
try {
//根据主键来判断是更新还是修改 因此一定要有主键
newsDao.createOrUpdate(news);
} catch (SQLException e) {
e.printStackTrace();
}
}
//根据id查找新闻
public ArrayList searchNews(String chId) {
try {
return (ArrayList) newsDao.queryBuilder().where().eq("channelId", chId).query();
} catch (SQLException e) {
e.printStackTrace();
}
return null;
}
} WeatherCacheDao
public class WeatherCacheDao {
private Context context;
private Dao weatherDao;
private DatabaseHelper helper;
public WeatherCacheDao(Context context) {
this.context = context;
helper = (DatabaseHelper) DatabaseHelper.getHelper(context);
try {
weatherDao = helper.getDao(Weather.class);
} catch (SQLException e) {
e.printStackTrace();
}
}
public void addWeather(Weather weather) {
try {
//根据主键来判断是更新还是修改 因此一定要有主键
weatherDao.createOrUpdate(weather);
} catch (SQLException e) {
e.printStackTrace();
}
}
//查询所有
public List searchWeather() {
try {
return weatherDao.queryForAll();
} catch (SQLException e) {
e.printStackTrace();
}return null;
}
public void deleteAll(){
try {
weatherDao.deleteBuilder().delete();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
**dataBaseHelper文件**
DatabaseHelper
public class DatabaseHelper extends OrmLiteSqliteOpenHelper {
private static final String TABLE_NAME = "ormtest.db";
private Map daos = new HashMap();
private static DatabaseHelper instance;
private DatabaseHelper(Context context) {
super(context, TABLE_NAME, null, 2);
}
@Override
public void onCreate(SQLiteDatabase database,
ConnectionSource connectionSource) {
try {
TableUtils.createTable(connectionSource, MyNews.class);
TableUtils.createTable(connectionSource, Weather.class);
} catch (SQLException e) {
e.printStackTrace();
}
}
@Override
public void onUpgrade(SQLiteDatabase database,
ConnectionSource connectionSource, int oldVersion, int newVersion) {
try {
//匹配User.class类
TableUtils.dropTable(connectionSource, MyNews.class, true);
TableUtils.dropTable(connectionSource, Weather.class, true);
onCreate(database, connectionSource);
} catch (SQLException e) {
e.printStackTrace();
}
}
/**
* 单例获取该Helper
*
* @param context
* @return
*/
public static synchronized DatabaseHelper getHelper(Context context) {
context = context.getApplicationContext();
if (instance == null) {
synchronized (DatabaseHelper.class) {
if (instance == null) {
instance = new DatabaseHelper(context);
}
}
}
return instance;
}
public synchronized Dao getDao(Class clazz) throws SQLException {
Dao dao = null;
String className = clazz.getSimpleName();
if (daos.containsKey(className)) {
dao = daos.get(className);
}
if (dao == null) {
dao = super.getDao(clazz);
daos.put(className, dao);
}
return dao;
}
/**
* 释放资源
*/
@Override
public void close() {
super.close();
for (String key : daos.keySet()) {
Dao dao = daos.get(key);
dao = null;
}
}
} MyDbHelper
public class MyDbHelper extends SQLiteOpenHelper {
private final String DBNAME = "MyNews.db";
private final String TABLE_NAME = "news";
//在SQLite里用作特殊标识的要加下划线(主键)
private final String INFO_COLUM_ID = "nid";
private final String INFO_COLUM_TITLE = "title";
private final String INFO_COLUM_HTML = "html";
private final String INFO_COLUM_PUBDATE = "pubDate";
private final String INFO_COLUM_SOURCE = "source";
private final String INFO_COLUM_IMG = "imageurls";
public MyDbHelper(Context context) {
//版本号不能为0
super(context, "MyNews.db", null, 1);
}
public MyDbHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version) {
super(context, name, factory, version);
}
@Override
public void onCreate(SQLiteDatabase db) {
//如果没有数据库及数据表 就会在OnCreate里自动创建
StringBuilder sql = new StringBuilder();
sql.append("Create table if not exists ");
sql.append(TABLE_NAME + " ( ");
// autoincrement 这一行自动增长
//sql.append(INFO_COLUM_ID + " varchar(50) primary key ,");
sql.append(INFO_COLUM_TITLE + " varchar(100) primary key ,");
sql.append(INFO_COLUM_HTML + " varchar(5000),");
sql.append(INFO_COLUM_PUBDATE + " varchar(20),");
sql.append(INFO_COLUM_SOURCE + " varchar(20),");
sql.append(INFO_COLUM_IMG + " varchar(500)");
sql.append(" ) ");
//执行SQL
db.execSQL(sql.toString());
}
//数据库更新升级
// 通过版本号Version 删除以前的表 然后重新调用OnCreate
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
//删除表（delete是删除表里的数据）
String sql = " drop table if exists " + TABLE_NAME;
db.execSQL(sql);
onCreate(db);
}
} **entity文件**
MyNews
@DatabaseTable(tableName = "newsCache")
public class MyNews implements Parcelable{
@DatabaseField
private String pubDate;
@DatabaseField(id=true)
private String title;
private String channelName;
private String desc;
@DatabaseField
private String source;
@DatabaseField
private String channelId;
private String link;
@DatabaseField
private String html;
private List allList;
@DatabaseField
private String imageurls;
private String nid;
public MyNews() {
}
protected MyNews(Parcel in) {
pubDate = in.readString();
title = in.readString();
channelName = in.readString();
desc = in.readString();
source = in.readString();
channelId = in.readString();
link = in.readString();
html = in.readString();
allList = in.createStringArrayList();
imageurls = in.readString();
nid = in.readString();
}
public static final Creator CREATOR = new Creator() {
@Override
public MyNews createFromParcel(Parcel in) {
return new MyNews(in);
}
@Override
public MyNews[] newArray(int size) {
return new MyNews[size];
}
};
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(pubDate);
dest.writeString(title);
dest.writeString(channelName);
dest.writeString(desc);
dest.writeString(source);
dest.writeString(channelId);
dest.writeString(link);
dest.writeString(html);
dest.writeStringList(allList);
dest.writeString(imageurls);
dest.writeString(nid);
}
public String getPubDate() {
return pubDate;
}
public String getTitle() {
return title;
}
public String getChannelName() {
return channelName;
}
public String getDesc() {
return desc;
}
public String getSource() {
return source;
}
public String getChannelId() {
return channelId;
}
public String getLink() {
return link;
}
public String getHtml() {
return html;
}
public List getAllList() {
return allList;
}
public String getImageurls() {
return imageurls;
}
public String getNid() {
return nid;
}
public static Creator getCREATOR() {
return CREATOR;
}
public void setPubDate(String pubDate) {
this.pubDate = pubDate;
}
public void setTitle(String title) {
this.title = title;
}
public void setChannelName(String channelName) {
this.channelName = channelName;
}
public void setDesc(String desc) {
this.desc = desc;
}
public void setSource(String source) {
this.source = source;
}
public void setChannelId(String channelId) {
this.channelId = channelId;
}
public void setLink(String link) {
this.link = link;
}
public void setHtml(String html) {
this.html = html;
}
public void setAllList(List allList) {
this.allList = allList;
}
public void setImageurls(String imageurls) {
this.imageurls = imageurls;
}
public void setNid(String nid) {
this.nid = nid;
}
} Weather
@DatabaseTable
public class Weather implements Parcelable{
@DatabaseField(id=true)
private String date; //日期
@DatabaseField
private String text_day; //白天天气现象文字
@DatabaseField
private String code_day; //白天天气现象代码
@DatabaseField
private String text_night; //晚间天气现象文字
@DatabaseField
private String code_night; //晚间天气现象代码
private String high; //当天最高温度
private String low; //当天最低温度
private String precip; //降水概率，范围0~100，单位百分比
private String wind_direction; //风向文字
private String wind_direction_degree; //风向角度，范围0~360
private String wind_speed; //风速，单位km/h（当unit=c时）、mph（当unit=f时）
private String wind_scale; //风力等级
public Weather() {
}
protected Weather(Parcel in) {
date = in.readString();
text_day = in.readString();
code_day = in.readString();
text_night = in.readString();
code_night = in.readString();
high = in.readString();
low = in.readString();
precip = in.readString();
wind_direction = in.readString();
wind_direction_degree = in.readString();
wind_speed = in.readString();
wind_scale = in.readString();
}
public static final Creator CREATOR = new Creator() {
@Override
public Weather createFromParcel(Parcel in) {
return new Weather(in);
}
@Override
public Weather[] newArray(int size) {
return new Weather[size];
}
};
public String getDate() {
return date;
}
public String getText_day() {
return text_day;
}
public String getCode_day() {
return code_day;
}
public String getText_night() {
return text_night;
}
public String getCode_night() {
return code_night;
}
public String getHigh() {
return high;
}
public String getLow() {
return low;
}
public String getPrecip() {
return precip;
}
public String getWind_direction() {
return wind_direction;
}
public String getWind_direction_degree() {
return wind_direction_degree;
}
public String getWind_speed() {
return wind_speed;
}
public String getWind_scale() {
return wind_scale;
}
public void setDate(String date) {
this.date = date;
}
public void setText_day(String text_day) {
this.text_day = text_day;
}
public void setCode_day(String code_day) {
this.code_day = code_day;
}
public void setText_night(String text_night) {
this.text_night = text_night;
}
public void setCode_night(String code_night) {
this.code_night = code_night;
}
public void setHigh(String high) {
this.high = high;
}
public void setLow(String low) {
this.low = low;
}
public void setPrecip(String precip) {
this.precip = precip;
}
public void setWind_direction(String wind_direction) {
this.wind_direction = wind_direction;
}
public void setWind_direction_degree(String wind_direction_degree) {
this.wind_direction_degree = wind_direction_degree;
}
public void setWind_speed(String wind_speed) {
this.wind_speed = wind_speed;
}
public void setWind_scale(String wind_scale) {
this.wind_scale = wind_scale;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(date);
dest.writeString(text_day);
dest.writeString(code_day);
dest.writeString(text_night);
dest.writeString(code_night);
dest.writeString(high);
dest.writeString(low);
dest.writeString(precip);
dest.writeString(wind_direction);
dest.writeString(wind_direction_degree);
dest.writeString(wind_speed);
dest.writeString(wind_scale);
}
@Override
public String toString() {
return "Weather{" +
"date='" + date + '\'' +
", text_day='" + text_day + '\'' +
", code_day='" + code_day + '\'' +
", text_night='" + text_night + '\'' +
", code_night='" + code_night + '\'' +
", high='" + high + '\'' +
", low='" + low + '\'' +
", precip='" + precip + '\'' +
", wind_direction='" + wind_direction + '\'' +
", wind_direction_degree='" + wind_direction_degree + '\'' +
", wind_speed='" + wind_speed + '\'' +
", wind_scale='" + wind_scale + '\'' +
'}';
}
}
**fragment文件**
HomeFragment
public class HomeFragment extends Fragment {
private PagerSlidingTabStrip pst;
private ViewPager vp;
private List fragmentList;
private List> channelList;
private List titles;
private NewsFragmentAdapter nfa;
public HomeFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.home_layout, container, false);
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
fragmentList = new ArrayList<>();
titles = new ArrayList<>();
pst = (PagerSlidingTabStrip) getView().findViewById(R.id.pst);
vp = (ViewPager) getView().findViewById(R.id.vp);
nfa = new NewsFragmentAdapter(getChildFragmentManager(), fragmentList, titles);
vp.setAdapter(nfa);
vp.setOffscreenPageLimit(2);
pst.setViewPager(vp);
pst.setIndicatorHeight(0);
pst.setUnderlineHeight(0);
pst.setShouldExpand(true);
//读取文件 文件名
String fileName = "channel.txt";
//获得文件所在的包名
String pn = getActivity().getPackageName();
//如果存在频道文件则读取 否则 从网络获取
if (FileUitlity.fileExists(pn + "/" + fileName)) {
String ja = FileUitlity.readFileFromSdcard(pn + "/" + fileName);
try {
Log.d("=====", "读取文件成功");
Log.d("====1=", ja);
initFragment(new JSONArray(ja));
} catch (JSONException e) {
e.printStackTrace();
}
} else {
new GetChannel().execute(UrlUtil.channelUrl);
}
}
//获取频道的异步任务类
public class GetChannel extends AsyncTask {
@Override
protected String doInBackground(String... strings) {
return HttpUtil.HttpGet(strings[0]);
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
//解析频道json数据
try {
JSONObject jsonObject = new JSONObject(s);
JSONObject body = jsonObject.getJSONObject("showapi_res_body");
JSONArray ja = body.getJSONArray("channelList");
if (ja.length() > 0) {
String pn = getActivity().getPackageName();
FileUitlity.getInstance(getActivity(), pn);
String result = FileUitlity.saveFileToSdcard(pn + "/channel.txt",
ja.toString());
if (result.equals("ok")) {
Log.d("=====", "文件保存成功");
} else {
Log.d("=====", "文件保存失败");
}
}
initFragment(ja);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
//初始化fragment
public void initFragment(JSONArray ja) throws JSONException {
//解析完频道数据后 放入channelList中
channelList = new ArrayList<>();
for (int i = 0; i < ja.length(); i++) {
JSONObject obj = (JSONObject) ja.get(i);
String id = obj.getString("channelId");
String name = obj.getString("name");
HashMap map = new HashMap();
map.put("id", id);
map.put("name", name);
channelList.add(map);
titles.add(name);
}
//根据频道数新建fragment
for (int i = 0; i < channelList.size(); i++) {
Fragment fragment = new NewsFragment();
Bundle bundle = new Bundle();
//获取频道的id和name 并把他们传到NewsFragment中去
bundle.putString("id", channelList.get(i).get("id"));
bundle.putString("name", channelList.get(i).get("name"));
//把频道的id和name放入相应的fragment中去
fragment.setArguments(bundle);
fragmentList.add(fragment);
}
pst.notifyDataSetChanged();
nfa.notifyDataSetChanged();
}
}
NewsFragment
public class NewsFragment extends Fragment {
private PullToRefreshListView prlv;
private NewsBaseAdapter nba;
private List newsList;
private NewsCacheDao newsCacheDao;
private String url;
private TextView tv;
private int page = 1;
private String id, name;
//Handler要用OS包里的 Handler的声明方式不同 大括号后面要加分号
private Handler handler = new Handler() {
//handleMessag在主线程中运行 相当于异步任务类里的OnPostExcute()
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
//判断属于哪个线程进行实现
if (msg.what == 1) {
Bundle bundle = msg.getData();
List list = bundle.getParcelableArrayList("cache");
newsList.addAll(list);
nba.notifyDataSetChanged();
//tv.setText("读取缓存成功");
new GetNews().execute(url);
}
}
};
public NewsFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_news, container, false);
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
newsCacheDao = new NewsCacheDao(getActivity());
newsList = new ArrayList<>();
tv = (TextView) getView().findViewById(R.id.tv);
prlv = (PullToRefreshListView) getView().findViewById(R.id.prlv);
nba = new NewsBaseAdapter(newsList,getActivity());
prlv.setAdapter(nba);
//设置上下都可以刷新
prlv.setMode(PullToRefreshBase.Mode.BOTH);
//注册监听
prlv.setOnRefreshListener(new prlvLisen());
Bundle bundle = getArguments();
//接收HomeFragment中传过来的数据 这样才能知道现在处于哪个频道下 然后根据频道的id和name加载不同的数据
id = bundle.getString("id");
name = bundle.getString("name");
url = UrlUtil.newsUrl + "?channelId=" + id
+ "&channelName=" + name + "&needHtml=1";
//执行线程要用run
//new GetCache(id).run();
new Thread(new GetCache()).start();
//getCache(id);
//new GetNews().execute(url);（这一句转去 getCache里写）
}
//读取数据库缓存 线程
public class GetCache implements Runnable {
//run()在子线程中运行
@Override
public void run() {
Bundle bundle = new Bundle();
ArrayList list = newsCacheDao.searchNews(id);
bundle.putParcelableArrayList("cache", list);
//tv.setText("读取缓存成功");
//nba.notifyDataSetChanged();
//new GetNews().execute(url);
Message message = new Message();
//如果有需要的话先把数据放入bundle里 再放入message里
//message.setData();
message.setData(bundle);
message.what = 1;
//告诉它子线程已经执行完了 要返回子线程中去handler.sendMessage()
handler.sendMessage(message);
}
}
//加载网络数据 异步任务类
public class GetNews extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... strings) {
return HttpUtil.HttpGet(strings[0]);
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
//解析 新闻数据
try {
JSONObject obj = new JSONObject(s);
JSONObject body = obj.getJSONObject("showapi_res_body");
JSONObject pageBean = body.getJSONObject("pagebean");
JSONArray contentList = pageBean.getJSONArray("contentlist");
if (page == 1) {
newsList.clear();
}
//在获取网络的时候清空list（防止重复） 不是清空数据库
for (int i = 0; i < contentList.length(); i++) {
JSONObject jo = (JSONObject) contentList.get(i);
//MyNews要有一个空的构造 不然这句话报错
MyNews myNews = new MyNews();
myNews.setTitle(jo.getString("title"));
myNews.setPubDate(jo.getString("pubDate"));
myNews.setImageurls(jo.getString("imageurls"));
myNews.setSource(jo.getString("source"));
myNews.setHtml(jo.getString("html"));
myNews.setChannelId(jo.getString("channelId"));
newsCacheDao.addNews(myNews);
newsList.add(myNews);
}
nba.notifyDataSetChanged();
prlv.onRefreshComplete();
} catch (JSONException e) {
e.printStackTrace();
}
}
}
// public void getCache(String id) {
// //读本地缓存
// newsList.addAll(newsCacheDao.searchNews(id));
// nba.notifyDataSetChanged();
// //如果没有加载网络
// if (newsList.size() == 0) {
// new GetNews().execute(url);
// }
// }
//下拉上拉 监听 内部类
public class prlvLisen implements PullToRefreshBase.OnRefreshListener2 {
@Override
public void onPullDownToRefresh(PullToRefreshBase refreshView) {
page = 1;
url = UrlUtil.newsUrl + "?channelId=" + id
+ "&channelName=" + name + "&page=" + page + "&needHtml=1";
new GetNews().execute(url);
}
@Override
public void onPullUpToRefresh(PullToRefreshBase refreshView) {
page++;
url = UrlUtil.newsUrl + "?channelId=" + id
+ "&channelName=" + name + "&page=" + page + "&needHtml=1";
new GetNews().execute(url);
}
}
MyFragment
public class MyFragment extends Fragment {
private KenBurnsView img;
private ImageView collection;
public MyFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.my_layout, container, false);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
img= (KenBurnsView) getView().findViewById(R.id.img);
collection= (ImageView) getView().findViewById(R.id.collection);
collection.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent(getActivity(), CollectionActivity.class);
startActivity(intent);
}
});
}TopicFragment（里面为天气）
public class TopicFragment extends Fragment {
private RequestQueue queue;
private SwipeRefreshLayout swip;
private CardView card1, card2, card3;
private WeatherCacheDao weatherCacheDao;
public TopicFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.weather_layout, container, false);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
card1 = (CardView) getView().findViewById(R.id.card1);
card2 = (CardView) getView().findViewById(R.id.card2);
card3 = (CardView) getView().findViewById(R.id.card3);
weatherCacheDao = new WeatherCacheDao(getActivity());
queue = Volley.newRequestQueue(getActivity());
swip = (SwipeRefreshLayout) getView().findViewById(R.id.swip);
//进度条背景色
swip.setProgressBackgroundColorSchemeColor(getResources().getColor(R.color.colorPrimary));
swip.setColorSchemeResources(R.color.colorAccent);
swip.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
//下拉刷新时执行此方法 可以写加载网络。。。等命令
public void onRefresh() {
//.......
//收起刷新进度条
//swip.setRefreshing(false);
//new Thread(new GetCache()).start();
getWeather();
}
});
readDatabase();
}
public void readDatabase() {
List list = weatherCacheDao.searchWeather();
//去生成Weather的toString方法
paraseList(list);
}
//获取天气
public void getWeather() {
String url = UrlUtil.weatherUrl + "?location=yantai";
StringGetRequest sgr = new StringGetRequest(Request.Method.GET, url, new
Response.Listener() {
@Override
public void onResponse(String s) {
if (!s.equals("")) {
try {
JSONObject obj = new JSONObject(s);
JSONArray results = obj.getJSONArray("results");
JSONArray ja1 = ((JSONObject) (results.get(0))).getJSONArray("daily");
Gson gson = new Gson();
List list = gson.fromJson(ja1.toString(), new TypeToken>() {
}.getType());
//只要一刷新就把缓存的清空掉
weatherCacheDao.deleteAll();
paraseList(list);
// for (int i = 0; i < results.length(); i++) {
// JSONObject jo = results.getJSONObject(i);
// Weather weather = new Weather();
// weather.setDate(jo.getString("date"));
// weather.setText_day(jo.getString("text_day"));
// weather.setCode_day(jo.getString("code_day"));
// weather.setText_night(jo.getString("text_night"));
// weather.setCode_night(jo.getString("code_nigh"));
// weather.setHigh(jo.getString("high"));
// weather.setLow(jo.getString("low"));
// weather.setPrecip(jo.getString("precip"));
// weather.setWind_direction(jo.getString("wind_direction"));
// weather.setWind_direction_degree(jo.getString("wind_direction_degree"));
// weather.setWind_speed(jo.getString("wind_speed"));
// weather.setWind_scale(jo.getString("wind_scale"));
// weatherList.add(weather);
// }
} catch (JSONException e) {
e.printStackTrace();
}
}
swip.setRefreshing(false);
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) {
swip.setRefreshing(false);
}
});
sgr.putHeaders("apikey", "3f37b44e3115841957414d7c4bf6c0f5");
queue.add(sgr);
}
//解析weather
public void paraseList(List list) {
for (int i = 0; i < list.size(); i++) {
View view = LayoutInflater.from(getActivity()).inflate(R.layout.weather_content, null);
Weather day = list.get(i);
weatherCacheDao.addWeather(day);
TextView date = (TextView) view.findViewById(R.id.date);
TextView text_day = (TextView) view.findViewById(R.id.text_day);
TextView code_day = (TextView) view.findViewById(R.id.code_day);
TextView text_night = (TextView) view.findViewById(R.id.text_night);
TextView code_night = (TextView) view.findViewById(R.id.code_night);
TextView high = (TextView) view.findViewById(R.id.high);
TextView low = (TextView) view.findViewById(R.id.low);
TextView precip = (TextView) view.findViewById(R.id.precip);
TextView wind_direction = (TextView) view.findViewById(R.id.wind_direction);
TextView wind_direction_degree = (TextView) view.findViewById(R.id.wind_direction_degree);
TextView wind_speed = (TextView) view.findViewById(R.id.wind_speed);
TextView wind_scale = (TextView) view.findViewById(R.id.wind_scale);
date.setText(day.getDate());
text_day.setText(day.getText_day());
code_day.setText(day.getCode_day());
text_night.setText(day.getText_night());
code_night.setText(day.getCode_night());
high.setText(day.getHigh());
low.setText(day.getLow());
precip.setText(day.getPrecip());
wind_direction.setText(day.getWind_direction());
wind_direction_degree.setText(day.getWind_direction_degree());
wind_scale.setText(day.getWind_scale());
wind_speed.setText(day.getWind_speed());
if (i == 0) {
if (card1.getChildCount() > 0) {
card1.removeAllViews();
}
card1.addView(view);
}
if (i == 1) {
if (card2.getChildCount() > 0) {
card2.removeAllViews();
}
card2.addView(view);
}
if (i == 2) {
if (card3.getChildCount() > 0) {
card3.removeAllViews();
}
card3.addView(view);
}
}
}
} **util工具类**
public class HttpUtil {
public static String HttpGet(String uri){
HttpURLConnection con = null;
BufferedReader reader = null;
InputStream is = null;
StringBuilder sbd = new StringBuilder();
try {
URL url = new URL(uri);
con = (HttpURLConnection) url.openConnection();
con.setConnectTimeout(5*1000);
con.setReadTimeout(5*1000);
con.setRequestProperty("apikey","5b46143955a4b1ff1b470a94315625cd");
con.connect();
if(con.getResponseCode()==200){
is = con.getInputStream();
reader = new BufferedReader(new InputStreamReader(is));
String strRead = null;
while ((strRead = reader.readLine()) != null) {
sbd.append(strRead);
sbd.append("\r\n");
}
return sbd.toString();
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if(reader!=null){
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return "";
}
}
public class FileUitlity {
private static String ROOT_CACHE;
private static FileUitlity instance = null;
private FileUitlity() {
}
//创建文件夹
public static FileUitlity getInstance(Context context, String root_dir) {
if (instance == null) {
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
ROOT_CACHE = (Environment.getExternalStorageDirectory() + "/"
+ root_dir + "/");
} else {
ROOT_CACHE = (context.getFilesDir().getAbsolutePath() + "/" + root_dir + "/");
}
File dir = new File(ROOT_CACHE);
if (!dir.exists()) {
dir.mkdirs();
}
instance = new FileUitlity();
}
return instance;
}
public File makeDir(String dir) {
File fileDir = new File(ROOT_CACHE + dir);
if (fileDir.exists()) {
return fileDir;
} else {
fileDir.mkdirs();
return fileDir;
}
}
//判断文件是否存在SD卡
public static boolean fileExists(String fileName) {
String state = Environment.getExternalStorageState();
if (!state.equals(Environment.MEDIA_MOUNTED)) {
return false;
} else {
File root = Environment.getExternalStorageDirectory();
File file = new File(root, fileName);
return file.exists();
}
}
//保存文件到SD卡
public static String saveFileToSdcard(String fileName, String content) {
String state = Environment.getExternalStorageState();
if (!state.equals(Environment.MEDIA_MOUNTED)) {
return "SD卡未就绪";
}
File root = Environment.getExternalStorageDirectory();
FileOutputStream fos = null;
try {
fos = new FileOutputStream(root + "/" + fileName);
fos.write(content.getBytes());
return "ok";
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (fos != null) {
try {
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return "";
}
//读取SD卡文件
public static String readFileFromSdcard(String fileName) {
String statue = Environment.getExternalStorageState();
if (!statue.equals(Environment.MEDIA_MOUNTED)) {
return "";
} else {
File root = Environment.getExternalStorageDirectory();
BufferedReader reader = null;
FileInputStream fis = null;
StringBuilder sbd = new StringBuilder();
try {
fis = new FileInputStream(root + "/" + fileName);
reader = new BufferedReader(new InputStreamReader(fis));
String row = "";
while ((row = reader.readLine()) != null) {
sbd.append(row);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return sbd.toString();
}
}
}
public class StringGetRequest extends StringRequest {
private Map header;
public StringGetRequest(int method, String url, Response.Listener listener, Response.ErrorListener errorListener) {
super(method, url, listener, errorListener);
header = new HashMap<>();
}
public void putHeaders(String key, String value) {
header.put(key, value);
}
public Map getHeaders() throws AuthFailureError {
return header;
}
}
public class StringPostRequest extends StringRequest {
private Map params;
private Map header;
public StringPostRequest(String url, Listener listener,
ErrorListener errorListener) {
//super实际调用了StringRequest的四参构造
super(Method.POST, url, listener, errorListener);
params = new HashMap();
header = new HashMap();
}
@Override
//回调方法 用的时候往Map里放值就可以
protected Map getParams() throws AuthFailureError {
return params;
}
public void putParams(String key, String value) {
this.params.put(key, value);
}
public Map getHeaders() throws AuthFailureError {
return header;
}
public void putHeaders(String key, String value) {
this.header.put(key, value);
}
}
public class UrlUtil {
//获取频道的网络接口
public static String channelUrl = "http://apis.baidu.com/showapi_open_bus/channel_news/channel_news";
/*
/获取频道对应新闻的网络接口
get请求参数：
channelId ：新闻频道id，必须精确匹配
channelName ：新闻频道名称，可模糊匹配
title ：新闻标题，模糊匹配
page ：页数，默认1。每页最多20条记
needContent：是否需要返回正文，1为需要
needHtml：是否需要返回正文的html格式，1为需要
*/
//获取新闻的网络接口
public static String newsUrl = "http://apis.baidu.com/showapi_open_bus/channel_news/search_news";
/*
参数名 类型 必填 参数位置 描述 默认值
location string 是 urlParam 所查询的位置 beijing
language string 否 urlParam 语言 zh-Hans
unit string 否 urlParam 单位 c
start string 否 urlParam 起始时间 0
days string 否 urlParam 天数 3
*/
//获取天气的网络接口
public static String weatherUrl = "http://apis.baidu.com/thinkpage/weather_api/suggestion";
}
public class PhotoViewPager extends ViewPager
{
private float mTrans;
private float mScale;
/**
* 最大的缩小比例
*/
private static final float SCALE_MAX = 0.0f;
/**
* 保存position与对于的View
*/
private HashMap mChildrenViews = new LinkedHashMap();
/**
* 滑动时左边的元素
*/
private View mLeft;
/**
* 滑动时右边的元素
*/
private View mRight;
public PhotoViewPager(Context context, AttributeSet attrs)
{
super(context, attrs);
}
@Override
public void onPageScrolled(int position, float positionOffset,
int positionOffsetPixels)
{
// Log.e(TAG, "position=" + position+", positionOffset = "+positionOffset+" ,positionOffsetPixels = " + positionOffsetPixels+" , currentPos = " + getCurrentItem());
//滑动特别小的距离时，我们认为没有动，可有可无的判断
float effectOffset = isSmall(positionOffset) ? 0 : positionOffset;
//获取左边的View
mLeft = findViewFromObject(position);
//获取右边的View
mRight = findViewFromObject(position + 1);
// 添加切换动画效果
animateStack(mLeft, mRight, effectOffset, positionOffsetPixels);
super.onPageScrolled(position, positionOffset, positionOffsetPixels);
}
public void setObjectForPosition(View view, int position)
{
mChildrenViews.put(position, view);
}
/**
* 通过过位置获得对应的View
*
* @param position
* @return
*/
public View findViewFromObject(int position)
{
return mChildrenViews.get(position);
}
private boolean isSmall(float positionOffset)
{
return Math.abs(positionOffset) < 0.0001;
}
protected void animateStack(View left, View right, float effectOffset,
int positionOffsetPixels)
{
if (right != null)
{
/**
* 缩小比例 如果手指从右到左的滑动（切换到后一个）：0.0~1.0，即从一半到最大
* 如果手指从左到右的滑动（切换到前一个）：1.0~0，即从最大到一半
*/
mScale = (1 - SCALE_MAX) * effectOffset + SCALE_MAX;
/**
* x偏移量： 如果手指从右到左的滑动（切换到后一个）：0-720 如果手指从左到右的滑动（切换到前一个）：720-0
*/
mTrans = -getWidth() - getPageMargin() + positionOffsetPixels;
right.setScaleX(mScale);
right.setScaleY(mScale);
right.setTranslationX(mTrans);
}
if (left != null)
{
left.bringToFront();
}
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
try {
return super.onTouchEvent(ev);
} catch (IllegalArgumentException ex) {
ex.printStackTrace();
}
return false;
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
try {
return super.onInterceptTouchEvent(ev);
} catch (IllegalArgumentException ex) {
ex.printStackTrace();
}
return false;
}
}
**布局文件**
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.edu.jereh.mynews.MainActivity">
<FrameLayout
android:id="@+id/fl"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
FrameLayout>
<android.support.v4.app.FragmentTabHost
android:id="@+id/ft"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#f7f0f0">
android.support.v4.app.FragmentTabHost>
LinearLayout>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.edu.jereh.mynews.ContentActivity">
<LinearLayout
android:id="@+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="50dp"
android:orientation="horizontal">
<ImageView
android:id="@+id/back"
android:layout_width="30dp"
android:layout_height="match_parent"
android:layout_weight="0.1"
android:src="@mipmap/back" />
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="@color/webViewTopBg"
android:gravity="center"
android:text="AAA"
android:layout_weight="1"
android:textSize="15sp"
android:textStyle="bold" />
<TextView
android:id="@+id/collection"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center"
android:layout_weight="1"
android:text="收藏" />
LinearLayout>
<WebView
android:id="@+id/wv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/linearLayout">WebView>
RelativeLayout>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.edu.jereh.mynews.CollectionActivity">
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/lv">ListView>
RelativeLayout>"1.0" encoding="utf-8"?>
"http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.edu.jereh.mynews.ImgActivity">
<com.edu.jereh.mynews.view.PhotoViewPager
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/pvp">
com.edu.jereh.mynews.view.PhotoViewPager>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="1">
<TextView
android:id="@+id/title"
android:layout_marginTop="5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="标题" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="@+id/source"
android:layout_width="match_parent"
android:layout_height="50dp"
android:text="新浪"
android:layout_weight="1"
android:gravity="center"
android:layout_above="@+id/content"
android:layout_toEndOf="@+id/img" />
<TextView
android:id="@+id/pubDate"
android:layout_width="match_parent"
android:layout_height="50dp"
android:text="刚刚"
android:layout_weight="1"
android:gravity="center"
android:layout_alignBottom="@+id/content" />
LinearLayout>
LinearLayout>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="1">
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="标题"
android:layout_marginTop="5dp"
android:layout_alignEnd="@+id/pubDate"
android:layout_toEndOf="@+id/img"
android:layout_alignParentTop="true" />
<ImageView
android:id="@+id/img"
android:layout_width="100dp"
android:layout_height="100dp"
android:src="@mipmap/ic_launcher"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true" />
<TextView
android:id="@+id/source"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="新浪"
android:layout_alignBottom="@+id/img"
android:layout_centerHorizontal="true" />
<TextView
android:id="@+id/pubDate"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:text="刚刚"
android:layout_alignTop="@+id/source"
android:layout_alignParentEnd="true"
android:layout_alignBottom="@+id/source" />
RelativeLayout>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="1">
<TextView
android:id="@+id/title"
android:layout_marginTop="5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="标题" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/ll1"
android:orientation="horizontal">
<ImageView
android:layout_width="90dp"
android:layout_height="90dp"
android:layout_weight="1"
android:id="@+id/img"
android:src="@mipmap/ic_launcher"/>
<ImageView
android:layout_width="90dp"
android:layout_height="90dp"
android:id="@+id/img2"
android:layout_weight="1"
android:src="@mipmap/ic_launcher"/>
LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/ll2"
android:orientation="horizontal">
<TextView
android:id="@+id/source"
android:layout_width="match_parent"
android:layout_height="50dp"
android:text="新浪"
android:layout_weight="1"
android:gravity="center"
android:layout_above="@+id/content"
android:layout_toEndOf="@+id/img" />
<TextView
android:id="@+id/pubDate"
android:layout_width="match_parent"
android:layout_height="50dp"
android:text="刚刚"
android:layout_weight="1"
android:gravity="center"
android:layout_alignBottom="@+id/content" />
LinearLayout>
LinearLayout>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="1">
<TextView
android:id="@+id/title"
android:layout_marginTop="5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="标题" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/ll1"
android:orientation="horizontal">
<ImageView
android:layout_width="90dp"
android:layout_height="90dp"
android:id="@+id/img"
android:layout_weight="1"
android:src="@mipmap/ic_launcher"/>
<ImageView
android:layout_width="90dp"
android:layout_height="90dp"
android:id="@+id/img2"
android:layout_weight="1"
android:src="@mipmap/ic_launcher"/>
<ImageView
android:layout_width="90dp"
android:layout_height="90dp"
android:id="@+id/img3"
android:layout_weight="1"
android:src="@mipmap/ic_launcher"/>
LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/ll2"
android:orientation="horizontal">
<TextView
android:id="@+id/source"
android:layout_width="match_parent"
android:layout_height="50dp"
android:text="新浪"
android:layout_weight="1"
android:gravity="center"
android:layout_above="@+id/content"
android:layout_toEndOf="@+id/img" />
<TextView
android:id="@+id/pubDate"
android:layout_width="match_parent"
android:layout_height="50dp"
android:text="刚刚"
android:layout_weight="1"
android:gravity="center"
android:layout_alignBottom="@+id/content" />
LinearLayout>
LinearLayout>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/date"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="10dp"
android:gravity="center"
android:textSize="18sp"
android:textStyle="bold" />
<LinearLayout
android:id="@+id/ll1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="@+id/text_day"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:textSize="14sp" />
<TextView
android:id="@+id/code_day"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:textSize="14sp" />
LinearLayout>
<LinearLayout
android:id="@+id/ll2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="@+id/text_night"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:textSize="14sp" />
<TextView
android:id="@+id/code_night"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:textSize="14sp" />
LinearLayout>
<LinearLayout
android:id="@+id/ll3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:text="最高气温："
android:textSize="14sp" />
<TextView
android:id="@+id/high"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:textSize="14sp" />
LinearLayout>
<LinearLayout
android:id="@+id/ll4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:text="最低气温:"
android:textSize="14sp" />
<TextView
android:id="@+id/low"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:textSize="14sp" />
LinearLayout>
<LinearLayout
android:id="@+id/ll5"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:text="降水概率:"
android:textSize="14sp" />
<TextView
android:id="@+id/precip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:textSize="14sp" />
LinearLayout>
<LinearLayout
android:id="@+id/ll6"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="@+id/wind_direction"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:textSize="14sp" />
<TextView
android:id="@+id/wind_direction_degree"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:textSize="14sp" />
LinearLayout>
<LinearLayout
android:id="@+id/ll7"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:text="风速为："
android:textSize="14sp" />
<TextView
android:id="@+id/wind_speed"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:textSize="14sp" />
LinearLayout>
<LinearLayout
android:id="@+id/ll8"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:text="风力等级："
android:textSize="14sp" />
<TextView
android:id="@+id/wind_scale"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:textSize="14sp" />
LinearLayout>
LinearLayout>"1.0" encoding="utf-8"?>
"http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
.support.v4.widget.SwipeRefreshLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/swip">
"match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="30dp"
android:layout_weight="1"
android:layout_margin="5dp"
app:cardCornerRadius="10dp"
app:cardElevation="10dp"
app:contentPadding="10dp"
app:cardBackgroundColor="#98e79a"
android:clickable="true"
android:foreground="?android:selectableItemBackground"
android:id="@+id/card1">
"wrap_content"
android:layout_height="wrap_content"
android:text="今日天气"/>
.support.v7.widget.CardView>
.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="30dp"
android:layout_weight="1"
android:layout_margin="5dp"
app:cardCornerRadius="10dp"
app:cardElevation="10dp"
app:contentPadding="10dp"
app:cardBackgroundColor="#7897ed"
android:clickable="true"
android:foreground="?android:selectableItemBackground"
android:id="@+id/card2">
"wrap_content"
android:layout_height="wrap_content"
android:text="明日天气"/>
.support.v7.widget.CardView>
.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="30dp"
android:layout_weight="1"
android:layout_margin="5dp"
app:cardCornerRadius="10dp"
app:cardElevation="10dp"
app:contentPadding="10dp"
app:cardBackgroundColor="#f5f562"
android:clickable="true"
android:foreground="?android:selectableItemBackground"
android:id="@+id/card3">
"wrap_content"
android:layout_height="wrap_content"
android:text="后日天气"/>
.support.v7.widget.CardView>
.support.v4.widget.SwipeRefreshLayout>
运行效果展示：
显示收藏的新闻：
