天气预报项目学习总结
SlidingMenu使用：
Java代码构造：
SlidingMenu构造方式：
SlidingMenumenu=new SlidingMenu(context);
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SlidingMenumenu=new SlidingMenu(this);
//设置侧滑的菜单的布局文件
menu.setMenu(R.layout.sliding_left);
//设置侧滑的方式
menu.setMode(SlidingMenu.LEFT_RIGHT);
//设置右侧菜单
menu.setSecondaryMenu(R.layout.sliding_right);
//设置窗口剩余的宽度
//menu.setBehindOffset(200);
menu.setBehindWidth(150);
//设置侧滑的屏幕的位置
menu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
//把侧滑菜单添加到活动窗口上
//menu.attachToActivity(this,SlidingMenu.SLIDING_CONTENT);
menu.attachToActivity(this,SlidingMenu.SLIDING_WINDOW);
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SlidingMenu常用属性介绍:
menu.setMode(SlidingMenu.LEFT);//设置左滑菜单
menu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);//设置滑动的屏幕范围，该设置为全屏区域都可以滑动
menu.setShadowDrawable(R.drawable.shadow);//设置阴影图片
menu.setShadowWidthRes(R.dimen.shadow_width);//设置阴影图片的宽度
menu.setBehindOffsetRes(R.dimen.slidingmenu_offset);//SlidingMenu划出时主页面显示的剩余宽度
menu.setBehindWidth(400);//设置SlidingMenu菜单的宽度
menu.setFadeDegree(0.35f);//SlidingMenu滑动时的渐变程度
menu.attachToActivity(this, SlidingMenu.SLIDING_CONTENT);//使SlidingMenu附加在Activity上
menu.setMenu(R.layout.menu_layout);//设置menu的布局文件
menu.toggle();//动态判断自动关闭或开启SlidingMenu
menu.showMenu();//显示SlidingMenu
menu.showContent();//显示内容
menu.setOnOpenListener(onOpenListener);//监听slidingmenu打开
关于关闭menu有两个监听，简单的来说，对于menuclose事件，一个是when,一个是after
menu.OnClosedListener(OnClosedListener);//监听slidingmenu关闭时事件
menu.OnClosedListener(OnClosedListener);//监听slidingmenu关闭后事件
左右都可以划出SlidingMenu菜单只需要设置
menu.setMode(SlidingMenu.LEFT_RIGHT);属性，然后设置右侧菜单的布局文件
menu.setSecondaryShadowDrawable(R.drawable.shadowright);//右侧菜单的阴影图片
设置SlidingMenu属性
sm = getSlidingMenu();
//如果只显示左侧菜单就是用LEFT,右侧就RIGHT，左右都支持就LEFT_RIGHT
sm.setMode(SlidingMenu.LEFT_RIGHT);//设置菜单滑动模式，菜单是出现在左侧还是右侧，还是左右两侧都有
sm.setShadowDrawable(R.drawable.shadow);//设置阴影的图片资源
sm.setShadowWidthRes(R.dimen.shadow_width);//设置阴影图片的宽度
//sm.setBehindWidth(200);//设置菜单的宽
sm.setBehindOffsetRes(R.dimen.slidingmenu_offset);//SlidingMenu划出时主页面显示的剩余宽度
sm.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);//设置滑动的区域
支持右侧划出菜单:
//SlidingMenu可以同时支持划出左右两侧的菜单，互不冲突，而且动画优美，体验良好。
sm.setSecondaryMenu(R.layout.menu_frame2);//设置右侧菜单
sm.setSecondaryShadowDrawable(R.drawable.shadowright);//设置右侧菜单阴影的图片资源
//右侧SlidingMenu的Fragment
getSupportFragmentManager().beginTransaction().replace(R.id.menu_frame2, newSampleListFragment()).commit();
slidingMenu= getSlidingMenu();
//设置是左滑还是右滑，还是左右都可以滑
slidingMenu.setMode(SlidingMenu.LEFT_RIGHT);
//设置阴影宽度
slidingMenu.setShadowWidth(getWindowManager().getDefaultDisplay().getWidth() /40);
//设置左菜单阴影图片
slidingMenu.setShadowDrawable(R.drawable.shadow);
//设置右菜单阴影图片
slidingMenu.setSecondaryShadowDrawable(R.drawable.right_shadow);
//设置菜单占屏幕的比例
slidingMenu.setBehindOffset(getWindowManager().getDefaultDisplay().getWidth() /5);
//设置滑动时菜单的是否淡入淡出
slidingMenu.setFadeEnabled(true);
//设置淡入淡出的比例
slidingMenu.setFadeDegree(0.4f);
//设置滑动时拖拽效果
slidingMenu.setBehindScrollScale(0);
//设置要使菜单滑动，触碰屏幕的范围
slidingMenu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
XML布局方式：
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Gson:
Gson使用步骤:
1. 借助在线json格式化工具,查看返回的json字符串的格式
在线json格式化工具:
http://tool.oschina.net/codeformat/json
json实体数据封装的工具
http://www.bejson.com/
===================================================================================
2. 根据json字符串的格式,构造相对应的实体类Bean；
public class Employee {
private String empID;
private String name;
private booleanpermanent;
private Addressaddress;
privateList
private String role;
private String[]cities;
private Propertiesproperties;
public StringgetEmpID() {
return empID;
}
public voidsetEmpID(String empID) {
this.empID = empID;
}
public String getName(){
return name;
}
public voidsetName(String name) {
this.name = name;
}
public booleanisPermanent() {
return permanent;
}
public voidsetPermanent(boolean permanent) {
this.permanent =permanent;
}
public AddressgetAddress() {
return address;
}
public voidsetAddress(Address address) {
this.address =address;
}
publicList
returnphoneNumbers;
}
public voidsetPhoneNumbers(List
this.phoneNumbers =phoneNumbers;
}
public String getRole(){
return role;
}
public voidsetRole(String role) {
this.role = role;
}
public String[]getCities() {
return cities;
}
public voidsetCities(String[] cities) {
this.cities =cities;
}
public PropertiesgetProperties() {
return properties;
}
public voidsetProperties(Properties properties) {
this.properties =properties;
}
public Employee() {
super();
// TODOAuto-generated constructor stub
}
public Employee(StringempID, String name, boolean permanent,
Addressaddress, List
String[]cities, Properties properties) {
super();
this.empID = empID;
this.name = name;
this.permanent =permanent;
this.address =address;
this.phoneNumbers =phoneNumbers;
this.role = role;
this.cities =cities;
this.properties =properties;
}
public static classAddress {
private Stringstreet;
private Stringcity;
private Stringzipcode;
public StringgetStreet() {
return street;
}
public voidsetStreet(String street) {
this.street =street;
}
public StringgetCity() {
return city;
}
public voidsetCity(String city) {
this.city =city;
}
public StringgetZipcode() {
return zipcode;
}
public voidsetZipcode(String zipcode) {
this.zipcode =zipcode;
}
publicAddress(String street, String city, String zipcode) {
super();
this.street =street;
this.city =city;
this.zipcode =zipcode;
}
public Address() {
super();
// TODOAuto-generated constructor stub
}
@Override
public StringtoString() {
return"Address [street=" + street + ", city=" + city
+", zipcode=" + zipcode + "]";
}
}
public static classProperties {
private String age;
private Stringsalary;
public StringgetAge() {
return age;
}
public voidsetAge(String age) {
this.age = age;
}
public StringgetSalary() {
return salary;
}
public voidsetSalary(String salary) {
this.salary =salary;
}
publicProperties(String age, String salary) {
super();
this.age = age;
this.salary =salary;
}
public Properties(){
super();
// TODOAuto-generated constructor stub
}
@Override
public StringtoString() {
return"Properties [age=" + age + ", salary=" + salary +"]";
}
}
@Override
public StringtoString() {
return"Employee [empID=" + empID + ", name=" + name + ",permanent="
+ permanent+ ", address=" + address + ", phoneNumbers="
+phoneNumbers + ", role=" + role + ", cities="
+Arrays.toString(cities) + ", properties=" + properties +"]";
}
}
===================================================================================
3. 构建Gson对象将Json字符串解析为实体类：
public class GsonTestEmp {
public static voidmain(String[] args) {
//构建Gson对象
Gson gson=new Gson();
try {
String jsonStr=new String(Files.readAllBytes(Paths.get("employee.txt")));
//System.out.println(jsonStr);
Employeeemployee=gson.fromJson(jsonStr, Employee.class);
System.out.println(employee.toString());
} catch (IOExceptione) {
e.printStackTrace();
}
}
}
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Volley使用：
1. 字符串请求StringRequest：
第1步创建一个请求的队列
创建一个volley的请求对象
将请求对象添加到请求队列中
++++++++++++++++++++++++++++++++++++++++++++++++++
public class MainActivity extends Activity {
//第1步创建一个请求的队列
RequestQueue queue=null;
@Override
protected voidonCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
queue=Volley.newRequestQueue(this);
}
public void load(Viewview){
StringRequestrequest=null;
try {
String cityname= URLEncoder.encode("北京","utf8");
String url ="http://op.juhe.cn/onebox/weather/query?cityname="+cityname+"&dtype=&key=ea8441cb939845649b04948972f34db6";
//2.创建一个volley的请求对象
request= new StringRequest(url,
newListener
@Override
publicvoid onResponse(String response) {
Gsongson=new Gson();
WeatherBeanbean=gson.fromJson(response, WeatherBean.class);
Log.i("TAG:weather",bean.toString());
}
}, newErrorListener() {
@Override
publicvoid onErrorResponse(VolleyError error) {
Log.i("TAG:error",error.getMessage());
}
});
} catch (Exceptione) {
e.printStackTrace();
}
//3.将请求对象添加到请求队列中
queue.add(request);
}
}
===================================================================================
2. 图片请求ImageRequest：
创建请求队列
获得ImageView控件
创建图片请求ImageRequest对象
将图片请求ImageRequest对象放入请求队列
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public class MainActivity extends Activity {
RequestQueue queue=null;
ImageViewimageView_test=null;
@Override
protected voidonCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
queue=Volley.newRequestQueue(this);
imageView_test=(ImageView)findViewById(R.id.imageView_test);
}
public voidloadimage1(View view){
Stringurl="http://172.60.50.50:8080/MusicServer/images/disanji.jpg";
ImageRequestrequest=new ImageRequest(url, new Listener
@Override
public voidonResponse(Bitmap response) {
imageView_test.setImageBitmap(response);
}
}, 0, 0,Config.ARGB_8888, new Response.ErrorListener() {
@Override
public voidonErrorResponse(VolleyError error) {
Log.i("TAG",error.getMessage());
}
});
queue.add(request);
}
}
===================================================================================
3. Json请求 jsonRequest
创建请求队列RequestQueue
创建JsonRequest对象
将JsonRequest放入请求队列RequestQueue
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public class SecondActivity extends Activity {
RequestQueue queue=null;
@Override
protected voidonCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
queue=Volley.newRequestQueue(this);
}
public void loadjson(Viewview){
JsonRequest
try {
String cityname =URLEncoder.encode("北京","utf8");
String url ="http://op.juhe.cn/onebox/weather/query?cityname="
+ cityname+ "&dtype=&key=ea8441cb939845649b04948972f34db6";
jsonRequest = new JsonObjectRequest(url,
null, newListener
@Override
publicvoid onResponse(JSONObject response) {
Log.i("TAG",response.toString());
}
}, newErrorListener() {
@Override
public void onErrorResponse(VolleyErrorerror) {
Log.e("ERROR",error.getMessage());
}
});
} catch (Exception e){
e.printStackTrace();
}
queue.add(jsonRequest);
}
}
===================================================================================
4. 自定义Volley请求：
自定义请求类继承Request累
重写构造方法
仿照StringRequest重写parseNetworkResponse方法
重写deliverResponse方法
和StringRequest一样使用
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package com.tarena.karen.request;
import java.io.UnsupportedEncodingException;
import com.android.volley.NetworkResponse;
import com.android.volley.ParseError;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.Response.ErrorListener;
import com.android.volley.Response.Listener;
import com.android.volley.toolbox.HttpHeaderParser;
import com.google.gson.Gson;
import com.tarena.karen.entity.WeatherBean;
public class WeatherRequest extends Request
privateListener
publicWeatherRequest(int method, String url,
Listener
super(method, url,listener);
this.mListener =mListener;
}
publicWeatherRequest(String url, Listener
ErrorListenerlistener) {
this(Method.GET,url, mListener, listener);
}
@Override
protectedResponse
NetworkResponseresponse) {
String jsonString;
try {
jsonString =new String(response.data,
HttpHeaderParser.parseCharset(response.headers));
Gson gson = newGson();
WeatherBeanbean = gson.fromJson(jsonString, WeatherBean.class);
returnResponse.success(bean,
HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingExceptione) {
e.printStackTrace();
returnResponse.error(new ParseError(e));
}
}
@Override
protected voiddeliverResponse(WeatherBean response) {
mListener.onResponse(response);
}
}
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public class MainActivity extends Activity {
RequestQueuequeue=null;
@Override
protected voidonCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
queue=Volley.newRequestQueue(this);
}
public voidloadweather(View view) throws UnsupportedEncodingException{
Stringcityname=URLEncoder.encode("北京", "utf8");
Stringurl="http://op.juhe.cn/onebox/weather/query?cityname="+cityname+"&dtype=&key=ea8441cb939845649b04948972f34db6";
WeatherRequestrequest=new WeatherRequest(url, new Listener
@Override
public voidonResponse(WeatherBean response) {
Log.i("TAG",response.toString());
}
}, newErrorListener() {
@Override
public voidonErrorResponse(VolleyError error) {
Log.e("ERROR",error.getMessage());
}
});
queue.add(request);
}
}
===================================================================================
Volley的其他图片处理方式：
1. Imageloader:
创建请求队列RequestQueue；
创建ImageLoader对象，同时构建ImageCache重写putBitmap和getBitmap方法
创建ImageListener对象
执行ImageLoader对象的loader.get(url, listener)方法
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public class ImageLoaderActivity extends Activity {
ImageViewimageView_loader=null;
RequestQueuequeue=null;
@Override
protected voidonCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_image_loader);
imageView_loader=(ImageView)findViewById(R.id.imageView_loader);
queue=Volley.newRequestQueue(this);
}
public voidimageloader(View view){
ImageLoaderloader=new ImageLoader(queue, new ImageCache() {
int maxSize=1024*1024*4;
LruCache
protectedint sizeOf(String key, Bitmap value) {
returnvalue.getRowBytes()*value.getHeight();
};
};
@Override
public voidputBitmap(String url, Bitmap bitmap) {
//把加载成功的图片存入缓存
cache.put(url,bitmap);
}
@Override
public BitmapgetBitmap(String url) {
//从缓存中获得图片
returncache.get(url);
}
});
Stringurl="http://172.60.50.50:8080/MusicServer/images/disanji.jpg";
ImageListenerlistener=ImageLoader.getImageListener(
imageView_loader,
R.drawable.ic_launcher,
R.drawable.ic_launcher);
loader.get(url,listener);
}
}
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2. 使用自定义的NetworkImageView
在Xml布局中使用NetworkImageView：
在java代码中获得NetworkImageView对象
创建请求队列RequestQueue
创建ImageLoader对象
执行NetworkImageView对象的.setImageUrl(url,loader)方法
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android:id="@+id/imageview_network" android:layout_width="80dp" android:layout_height="80dp" android:layout_alignParentTop="true" android:layout_centerHorizontal="true"/> ++++++++++++++++++++++++++++++++++++++++++++++++++++ public class NetWorkImageActivity extends Activity { NetworkImageViewimageView=null; RequestQueuequeue=null; @Override protected voidonCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_net_work_image); imageView=(NetworkImageView)findViewById(R.id.imageview_network); queue=Volley.newRequestQueue(this); imageView.setDefaultImageResId(R.drawable.ic_launcher); imageView.setErrorImageResId(R.drawable.ic_launcher); } public voidloadnetwork(View view){ ImageLoaderloader=new ImageLoader(queue, new ImageCache() { intmaxSize=1024*1024*4; LruCache protectedint sizeOf(String key, Bitmap value) { returnvalue.getRowBytes()*value.getHeight(); }; }; @Override public voidputBitmap(String url, Bitmap bitmap) { cache.put(url,bitmap); } @Override public BitmapgetBitmap(String url) { returncache.get(url); } }); Stringurl="http://172.60.50.50:8080/MusicServer/images/disanji.jpg"; imageView.setImageUrl(url,loader); } } 建立PullToRefreshListView的ItemView的布局 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ android:layout_width="match_parent" android:layout_height="50dp" android:orientation="horizontal" android:weightSum="5" > android:id="@+id/image_item_weather" android:layout_width="wrap_content" android:layout_height="match_parent" android:paddingLeft="10dp" android:src="@drawable/sunny" /> android:id="@+id/textview_item_condition" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:gravity="center" android:text="晴" /> android:id="@+id/textview_item_temp" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:gravity="center" android:text="21/18" /> android:id="@+id/textview_item_weekday" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:gravity="center_vertical" android:text="星期三"/> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ public class WeatherAdapter extends BaseAdapter { List LayoutInflaterlayoutInflater=null; publicWeatherAdapter(Context context) { layoutInflater=LayoutInflater.from(context); } public voidaddWeathers(List if(isClear){ weathers.clear(); weathers.addAll(weatherList); }else{ weathers.addAll(weatherList); } notifyDataSetChanged(); } @Override public int getCount() { returnweathers.size(); } @Override public WeathergetItem(int position) { returnweathers.get(position); } @Override public longgetItemId(int position) { return position; } @Override public View getView(intposition, View convertView, ViewGroup parent) { ViewHolderholder=null; if(convertView==null){ holder=newViewHolder(); convertView=layoutInflater.inflate(R.layout.inflate_weather_item,null); holder.imageview_codition=(ImageView)convertView.findViewById(R.id.image_item_weather); holder.textview_condition=(TextView)convertView.findViewById(R.id.textview_item_condition); holder.textview_temp=(TextView)convertView.findViewById(R.id.textview_item_temp); holder.textview_weekday=(TextView)convertView.findViewById(R.id.textview_item_weekday); convertView.setTag(holder); }else{ holder=(ViewHolder)convertView.getTag(); } Weatherweather=weathers.get(position); String condition=weather.getInfo().getDay()[0]; if(condition.equals("0")){ holder.imageview_codition.setImageResource(R.drawable.sunny); }elseif(condition.equals("1")){ holder.imageview_codition.setImageResource(R.drawable.cloudy); }elseif(condition.equals("2")){ holder.imageview_codition.setImageResource(R.drawable.lotcloudy); }elseif(condition.equals("3")){ holder.imageview_codition.setImageResource(R.drawable.rain); } holder.textview_condition.setText(weather.getInfo().getDay()[1]); holder.textview_temp.setText(weather.getInfo().getDay()[2]+"/"+weather.getInfo().getNight()[2]); holder.textview_weekday.setText(weather.getWeek()); return convertView; } public classViewHolder{ ImageViewimageview_codition=null; TextViewtextview_weekday=null; TextViewtextview_condition=null; TextViewtextview_temp=null; } } ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ public class MainActivity extends Activity { PullToRefreshListViewrefreshListView = null; WeatherAdapter adapter= null; @Override protected voidonCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initialUI(); } private voidinitialUI() { adapter = newWeatherAdapter(this); refreshListView =(PullToRefreshListView) findViewById(R.id.refresh_listview); refreshListView.setAdapter(adapter); // 加载数据 HttpManager.loadWeathers(this,"北京", newLoadWeatherListener() { @Override public voidOnWeatherLoadEnd(WeatherBean bean) { List .getWeather(); adapter.addWeathers(weathers,true); } }); // //实现下拉刷新功能 //refreshListView.setOnRefreshListener(new //OnRefreshListener // @Override // public voidonRefresh(final PullToRefreshBase // { // //在该回调方法中加入网络请求的代码，请求服务器端的新的数据 // //以实现下拉刷新 // //refreshListView.onRefreshComplete(); //HttpManager.loadWeathers(MainActivity.this, // "北京", // new LoadWeatherListener(){ // @Override // public voidOnWeatherLoadEnd(WeatherBean bean) { // //List //adapter.addWeathers(weathers, false); // } // }); // } // }); refreshListView.setMode(Mode.BOTH); // 实现下拉刷新和上拉加载 refreshListView.setOnRefreshListener(newOnRefreshListener2 public voidonPullDownToRefresh(final PullToRefreshBase // 实现下拉刷新 refreshListView.onRefreshComplete(); HttpManager.loadWeathers(MainActivity.this,"北京", newLoadWeatherListener() { @Override publicvoid OnWeatherLoadEnd(WeatherBean bean) { List adapter.addWeathers(weathers,false); refreshView.getLoadingLayoutProxy(true,false) .setLastUpdatedLabel("正在加载内容....."); } }); } @Override public voidonPullUpToRefresh(final PullToRefreshBase refreshListView.onRefreshComplete(); // 实现上拉加载 HttpManager.loadWeathers(MainActivity.this,"北京", newLoadWeatherListener() { @Override publicvoid OnWeatherLoadEnd(WeatherBean bean) { List adapter.addWeathers(weathers,false); refreshView.getLoadingLayoutProxy(false,true).setPullLabel("上拉加载中......"); } }); } }); } } //解析自定义的布局文件转换成一个view对象 realtime_view=getLayoutInflater().inflate(R.layout.realweather_layout, listview_weather, false); adapter=newWeatherAdapter(this); pullToRefreshListView=(PullToRefreshListView)findViewById(R.id.pull_refresh_listview); listview_weather=pullToRefreshListView.getRefreshableView(); listview_weather.setAdapter(adapter); //将view对象作为listview的Header listview_weather.addHeaderView(realtime_view); 绘制折线图： 使用achartengine-1.1.0.jar import org.achartengine.ChartFactory; import org.achartengine.GraphicalView; import org.achartengine.chart.PointStyle; import org.achartengine.model.XYMultipleSeriesDataset; import org.achartengine.model.XYSeries; import org.achartengine.renderer.XYMultipleSeriesRenderer; import org.achartengine.renderer.XYSeriesRenderer; import android.app.Activity; import android.graphics.Color; import android.os.Bundle; public class MainActivity extends Activity { @Override protected voidonCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); lineView(); } // 折线图 public void lineView(){ // 同样是需要数据dataset和视图渲染器renderer XYMultipleSeriesDatasetmDataset = new XYMultipleSeriesDataset(); XYSeries series =new XYSeries("第一条线"); series.add(1, 6); series.add(2, 5); series.add(3, 7); series.add(4, 4); mDataset.addSeries(series); XYSeries seriesTwo= new XYSeries("第二条线"); seriesTwo.add(1,4); seriesTwo.add(2,6); seriesTwo.add(3,3); seriesTwo.add(4,7); mDataset.addSeries(seriesTwo); XYMultipleSeriesRenderermRenderer = new XYMultipleSeriesRenderer(); // 设置图表的X轴的当前方向 mRenderer .setOrientation(XYMultipleSeriesRenderer.Orientation.HORIZONTAL); mRenderer.setXTitle("日期");// 设置为X轴的标题 mRenderer.setYTitle("价格");// 设置y轴的标题 mRenderer.setAxisTitleTextSize(20);//设置轴标题文本大小 mRenderer.setChartTitle("价格走势图");// 设置图表标题 mRenderer.setChartTitleTextSize(30);//设置图表标题文字的大小 mRenderer.setLabelsTextSize(18);//设置标签的文字大小 mRenderer.setLegendTextSize(20);//设置图例文本大小 mRenderer.setPointSize(10f);//设置点的大小 mRenderer.setYAxisMin(0);//设置Y轴起点 mRenderer.setYAxisMax(15); mRenderer.setYLabels(10);//设置Y轴刻度个数（貌似不太准确） mRenderer.setXAxisMax(5); mRenderer.setShowGrid(true);//显示网格 // 将x标签栏目显示如：1,2,3,4替换为显示1月，2月，3月，4月 mRenderer.addXTextLabel(1,"1月"); mRenderer.addXTextLabel(2,"2月"); mRenderer.addXTextLabel(3,"3月"); mRenderer.addXTextLabel(4,"4月"); mRenderer.setXLabels(0);//设置只显示如1月，2月等替换后的东西，不显示1,2,3等 mRenderer.setMargins(newint[] {20, 30, 30, 20 });// 设置视图位置上左下右 XYSeriesRenderer r= new XYSeriesRenderer();// (类似于一条线对象) r.setColor(Color.BLUE);//设置颜色 r.setPointStyle(PointStyle.CIRCLE);//设置点的样式 r.setFillPoints(true);//填充点（显示的点是空心还是实心） r.setDisplayChartValues(true);//将点的值显示出来 r.setChartValuesSpacing(10);//显示的点的值与图的距离 r.setChartValuesTextSize(25);//点的值的文字大小 //r.setFillBelowLine(true);//是否填充折线图的下方 //r.setFillBelowLineColor(Color.GREEN);//填充的颜色，如果不设置就默认与线的颜色一致 r.setLineWidth(3);//设置线宽 mRenderer.addSeriesRenderer(r); XYSeriesRendererrTwo = new XYSeriesRenderer();// (类似于一条线对象) rTwo.setColor(Color.GRAY);//设置颜色 rTwo.setPointStyle(PointStyle.CIRCLE);//设置点的样式 rTwo.setFillPoints(true);//填充点（显示的点是空心还是实心） rTwo.setDisplayChartValues(true);//将点的值显示出来 rTwo.setChartValuesSpacing(10);//显示的点的值与图的距离 rTwo.setChartValuesTextSize(25);//点的值的文字大小 //rTwo.setFillBelowLine(true);//是否填充折线图的下方 //rTwo.setFillBelowLineColor(Color.GREEN);//填充的颜色，如果不设置就默认与线的颜色一致 rTwo.setLineWidth(3);//设置线宽 mRenderer.addSeriesRenderer(rTwo); GraphicalView view= ChartFactory.getLineChartView(this, mDataset, mRenderer); view.setBackgroundColor(Color.BLACK); setContentView(view); } } ===========================================================PullToRefreshListView：
布局中使用PullToRefreshListView
在Java代码中获得PullToRefreshListView对象
创建适配器
将适配器与PullToRefreshListView对象关联
设置上拉刷新，下拉加载监听
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android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/refresh_listview"
>