package com.yskj.jh.demopopupwindow;import android.content.Context;import android.graphics.drawable.BitmapDrawable;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.BaseAdapter;import android.widget.Button;import android.widget.LinearLayout;import android.widget.ListView;import android.widget.PopupWindow;import android.widget.TextView;import android.widget.Toast;import java.util.ArrayList;public class MainActivity extends AppCompatActivity { private Button button; private PopupWindow kindsPopupWindow; @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_main);  button = (Button) findViewById(R.id.button);  button.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    getKindPopupWindow();   }  }); } private void getKindPopupWindow() {  final ArrayList kindsList = new ArrayList();  kindsList.add("全部分類");  kindsList.add("今日上線");  kindsList.add("美食");  kindsList.add("酒店");  kindsList.add("旅游");  LayoutInflater inflater = LayoutInflater.from(this);  // 引入窗口配置文件  View view = inflater.inflate(R.layout.pop_local_kind, null);  // 創建PopupWindow對象  kindsPopupWindow = new PopupWindow(view, LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT, false);  //設置popupWindow寬  kindsPopupWindow.setWidth(button.getWidth());  ListView listView = (ListView) view.findViewById(R.id.list);  PopAdapter adapter = new PopAdapter(MainActivity.this,kindsList);  listView.setAdapter(adapter);  // 需要設置一下此參數，點擊外邊可消失  kindsPopupWindow.setBackgroundDrawable(new BitmapDrawable());  //設置點擊窗口外邊窗口消失  kindsPopupWindow.setOutsideTouchable(true);  // 設置此參數獲得焦點，否則無法點擊  kindsPopupWindow.setFocusable(true);  //設置popupWindow顯示位置  kindsPopupWindow.showAsDropDown(button);  listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {   @Override   public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {    Toast.makeText(MainActivity.this,i+"pop",Toast.LENGTH_SHORT).show();    button.setText(kindsList.get(i).toString());    kindsPopupWindow.dismiss();   }  }); } //pop適配器 private class PopAdapter extends BaseAdapter {  private Context context;  private ArrayList<String> list;  public PopAdapter(Context context, ArrayList<String> list) {   this.context = context;   this.list = list;  }  @Override  public int getCount() {   if (list==null||list.size()==0){    return 0;   }   return list.size();  }  @Override  public Object getItem(int i) {   return list.get(i);  }  @Override  public long getItemId(int i) {   return i;  }  @Override  public View getView(int i, View convertView, ViewGroup viewGroup) {   ViewHolder holder = null;   if(convertView==null){    holder = new ViewHolder();    convertView = LayoutInflater.from(context).inflate(R.layout.item_pop_local_kind, null);    holder.textView = (TextView) convertView.findViewById(R.id.item_text);    convertView.setTag(holder);   }else{    holder=(ViewHolder)convertView.getTag();   }   holder.textView.setText(list.get(i).toString());   return convertView;  }  private class ViewHolder {   TextView textView;  } }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <Button  android:id="@+id/button"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:text="Show PopupWindow" /></LinearLayout>

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:background="#ffffff"> <ListView  android:id="@+id/list"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:background="#888888"> </ListView></LinearLayout>

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:background="@color/white"> <TextView  android:id="@+id/item_text"  android:layout_width="match_parent"  android:layout_height="40dp"  android:gravity="center"  android:text="pop"  android:textColor="#f08e1f"  android:background="#eeeeee"  /></LinearLayout>