排序（正序与反序）与popupwindow
先看看实现的效果：
大概需要实现的效果就是：
网络获取数据，根据数据里的价格进行排序（反序和正序），
点击条目，弹出自定义popupwindow，点击”是“删除条目并隐藏popupwindow,
点击“否”隐藏popupwindow;
下面直接上代码：
MainActivity:
public class MainActivity extends AppCompatActivity implements View.OnClickListener, AdapterView.OnItemClickListener {
private String path = "http://api.fang.anjuke.com/m/android/1.3/shouye/recInfosV3/?city_id=14&lat=40.04652&lng=116.306033&api_key=androidkey&sig=9317e9634b5fbc16078ab07abb6661c5&macid=45cd2478331b184ff0e15f29aaa89e3e&app=a-ajk&_pid=11738&o=PE-TL10-user+4.4.2+HuaweiPE-TL10+CHNC00B260+ota-rel-keys%2Crelease-keys&from=mobile&m=Android-PE-TL10&cv=9.5.1&cid=14&i=864601026706713&v=4.4.2&pm=b61&uuid=1848c59c-185d-48d9-b0e9-782016041109&_chat_id=0&qtime=20160411091603";
private Button zheng;
private Button fan;
private ListView listView;
private List list2;
private MyAdapter adapter;
private PopupWindow popupWindow;
private Button but1;
private Button but2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
listView.setOnItemClickListener(this);
RequestParams params=new RequestParams(path);
org.xutils.x.http().get(params, new Callback.CommonCallback() {
@Override
public void onSuccess(String result) {
Gson gson=new Gson();
RootBean rootBean = gson.fromJson(result, RootBean.class);
List rows = rootBean.result.rows;
list2 = new ArrayList<>();
for (int i = 0; i adapterView, View view, final int i, long l) {
View inflate = LayoutInflater.from(MainActivity.this).inflate(R.layout.item2, null);
popupWindow = new PopupWindow(inflate, 300,200);
//设置popuwindow外部可以点击
popupWindow.setOutsideTouchable(true);//可以点击
//设置popuwindow里面的listView有焦点
popupWindow.setFocusable(true);
//如果想让popuwindow有动画效果,下面这行代码必须写，没有不会执行动画
popupWindow.setBackgroundDrawable(new ColorDrawable());
// 计算出来的位置，y方向就在anchorView的上面和下面对齐显示，x方向就是与屏幕右边对齐显示
//如果anchorView的位置有变化，就可以适当自己额外加入偏移来修正
final int windowPos[] = new int[2];
final int anchorLoc[] = new int[2];
// 获取锚点View在屏幕上的左上角坐标位置
view.getLocationOnScreen(anchorLoc);
final int anchorHeight = view.getHeight();
// 获取屏幕的高宽
final int screenHeight = ScreenUtils.getScreenHeight(view.getContext());
final int screenWidth = ScreenUtils.getScreenWidth(view.getContext());
inflate.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
// 计算contentView的高宽
final int windowHeight = inflate.getMeasuredHeight();
final int windowWidth = inflate.getMeasuredWidth();
// 判断需要向上弹出还是向下弹出显示
final boolean isNeedShowUp = (screenHeight - anchorLoc[1] - anchorHeight < windowHeight);
if (isNeedShowUp) {
windowPos[0] = screenWidth - windowWidth;
windowPos[1] = anchorLoc[1] - windowHeight;
} else {
windowPos[0] = screenWidth - windowWidth;
windowPos[1] = anchorLoc[1] + anchorHeight;
}
int xOff = 20;
windowPos[0] -= xOff;
popupWindow.showAtLocation(view, Gravity.TOP | Gravity.START, windowPos[0], windowPos[1]);
but1 = inflate.findViewById(R.id.but1);
but2 = inflate.findViewById(R.id.but2);
but1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
list2.remove(i);
adapter.notifyDataSetChanged();
popupWindow.dismiss();
}
});
but2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
popupWindow.dismiss();
}
});
}
class MyAdapter extends BaseAdapter{
@Override
public int getCount() {
return list2.size();
}
@Override
public Object getItem(int i) {
return null;
}
@Override
public long getItemId(int i) {
return 0;
}
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
ViewHolder holder=null;
if (view==null){
holder=new ViewHolder();
view=View.inflate(MainActivity.this,R.layout.item,null);
holder.imageView= view.findViewById(R.id.imageView);
holder.textView=view.findViewById(R.id.textView);
holder.textView2=view.findViewById(R.id.textView2);
view.setTag(holder);
}else {
holder=(ViewHolder)view.getTag();
}
Image image=new Image();
image.setImageView(list2.get(i).default_image,MainActivity.this,holder.imageView);
holder.textView.setText(list2.get(i).loupan_name);
holder.textView2.setText(list2.get(i).price+"");
return view;
}
class ViewHolder{
ImageView imageView;
TextView textView,textView2;
}
}
}
public class App extends Application {
@Override
public void onCreate() {
super.onCreate();
x.Ext.init(this);
}
}
public class Image {
public static void setImageView(String url, Context context, ImageView imageView) {
//初始化
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(context).build();
//创建Imageloader 对象
ImageLoader imageLoader = ImageLoader.getInstance();
//设置初始化
imageLoader.init(config);
DisplayImageOptions options = new DisplayImageOptions.Builder()
.showImageOnLoading(R.mipmap.ic_launcher) //设置图片在下载期间显示的图片
.showImageForEmptyUri(R.mipmap.ic_launcher)//设置图片Uri为空或是错误的时候显示的图片
.showImageOnFail(R.mipmap.ic_launcher) //设置图片加载/解码过程中错误时候显示的图片
.cacheInMemory(true)//设置下载的图片是否缓存在内存中
.cacheOnDisk(true)//设置下载的图片是否缓存在SD卡中
.imageScaleType(ImageScaleType.IN_SAMPLE_INT)//设置图片以如何的编码方式显示
.bitmapConfig(Bitmap.Config.RGB_565)//设置图片的解码类型
.build();//构建完成
imageLoader.displayImage(url, imageView, options);
//.displayer(new RoundedBitmapDisplayer(90)) 构建圆形图片
}
}
public class ScreenUtils {
/**
* 获取屏幕高度(px)
*/
public static int getScreenHeight(Context context) {
return context.getResources().getDisplayMetrics().heightPixels;
}
/**
* 获取屏幕宽度(px)
*/
public static int getScreenWidth(Context context) {
return context.getResources().getDisplayMetrics().widthPixels;
}
}
public class RootBean {
public String status;
public ResultBean result;
public static class ResultBean {
public String title;
public String total;
public int next_page;
public List rows;
public static class RowsBean {
public String fang_type;
public InfoBean info;
public static class InfoBean implements Comparator{
@Override
public int compare(Object o, Object t1) {
InfoBean p1 = (InfoBean) o; // 强制转换
InfoBean p2 = (InfoBean) t1;
return new Double(p1.price).compareTo(new Double(p2.price));
}
public String loupan_id;
public String loupan_name;
public String city_id;
public String new_price_value;
public String new_price_back;
public int price;
public String region_id;
public String region_title;
public String sub_region_id;
public String sub_region_title;
public String default_image;
public String address;
public ShowActivityBean show_activity;
public TuangouBean tuangou;
public ZhuankftBean zhuankft;
public KftBean kft;
public String sale_label;
public String loupan_property_type;
public String tags;
public String status_sale;
public int has_sale;
public String lat;
public String lng;
public String baidu_lat;
public String baidu_lng;
public String kaipan_new_date;
public ActivityTagsBean activity_tags;
public int has_consultant;
public String sale_title;
public RecommendPriceBean recommend_price;
public String fang_type;
public BrandBean brand;
public int has_video;
public int has_aerial_photo;
public String area_rage;
public String jianzhu_area;
public List activity_tags_icon;
public List multi_image;
public List activity;
public static class ShowActivityBean {
}
public static class TuangouBean {
}
public static class ZhuankftBean {
}
public static class KftBean {
}
public static class ActivityTagsBean {
}
public static class RecommendPriceBean {
}
public static class BrandBean {
}
public static class ActivityBean {
/**
* type : hui
* icon : http://pic1.ajkimg.com/material/get/8654d43460b906afd0355d73a3fb86ec.png
* title : 长安街西延线南约300米
*/
public String type;
public String icon;
public String title;
}
}
}
}
}
下面就是几个布局：
activity_main:
listView中的条目：
最后别忘记jar包：
如有什么bug，请大神多多指点；