<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:id="@+id/main"  android:orientation="vertical"  tools:context=".MainActivity"  android:background="@color/white" >   <RelativeLayout  android:id="@+id/rl_action_bar"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:layout_gravity="center"  android:padding="10dip"  android:background="@color/gold" >   <Button   android:id="@+id/more"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:layout_alignParentRight="true"   android:layout_marginRight="10dip"   android:background="@drawable/more" />  <Button   android:id="@+id/add"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:layout_marginRight="20dip"   android:layout_toLeftOf="@+id/more"   android:background="@drawable/add"   />  <Button   android:id="@+id/search"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:layout_marginRight="20dip"   android:layout_toLeftOf="@+id/add"   android:background="@drawable/search"   />  </RelativeLayout>  </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:background="@drawable/click"  android:cacheColorHint="#00000000"  android:orientation="vertical" >  <ListView  android:id="@+id/lv_dialog"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:cacheColorHint="#00000000"  android:listSelector="@drawable/grouplist_item_bg_normal" >  </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" >   <TextView  android:id="@+id/tv_text"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:layout_marginLeft="10dip"  android:padding="5dp"  android:textSize="20sp" />  </LinearLayout> 

package com.bn.weixindemo;  import android.app.Activity; import android.graphics.drawable.BitmapDrawable; import android.os.Bundle; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.PopupWindow; import android.widget.Toast; import android.widget.AdapterView.OnItemClickListener;  /**  *  *@title 標題  *@description 仿微信頂部彈出框的popuwindow  *@author zhengxiaolin  *@version 1.0  *@created 2014-5-23 上午12:11:11  *@changeRecord [修改記錄]<br />  */ public class MainActivity extends Activity implements OnClickListener{  private Button mBtnMore,mBtnAdd,mBtnSearch;  private PopupWindow popupWindow;  private LinearLayout layout;  private ListView listView;  private String[] more = {"我的相冊","我的收藏","我的銀行卡","設置","意見反饋"};  private String[] add ={"發(fā)起群聊","添加朋友","視屏聊天","掃一掃","拍照分享"};  @Override  protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.main);  mBtnMore = (Button) findViewById(R.id.more);  mBtnAdd = (Button) findViewById(R.id.add);  mBtnSearch = (Button) findViewById(R.id.search);  setOnClickListener();  }   private void setOnClickListener() {  mBtnMore.setOnClickListener(this);  mBtnAdd.setOnClickListener(this);  mBtnSearch.setOnClickListener(this);  }   @Override  public void onClick(View v) {  // TODO Auto-generated method stub  switch (v.getId()) {  case R.id.more:   mBtnMore.getTop();   int y = mBtnMore.getBottom() * 3 / 2;   int x = getWindowManager().getDefaultDisplay().getWidth();   showMorePopupWindow(x, y);   break;  case R.id.add:   mBtnAdd.getTop();   int y1 = mBtnAdd.getBottom() * 3 / 2;   int x1 = getWindowManager().getDefaultDisplay().getWidth();   showAddPopupWindow(x1, y1);   break;  case R.id.search:   Toast.makeText(getBaseContext(), "搜索", 1).show();  default:   break;  }  }   public void showMorePopupWindow(int x, int y) {  layout = (LinearLayout) LayoutInflater.from(MainActivity.this).inflate(   R.layout.popupwindow_dialog, null);  listView = (ListView) layout.findViewById(R.id.lv_dialog);  listView.setAdapter(new ArrayAdapter<String>(MainActivity.this,   R.layout.text, R.id.tv_text, more));   popupWindow = new PopupWindow(MainActivity.this);  popupWindow.setBackgroundDrawable(new BitmapDrawable());  popupWindow   .setWidth(getWindowManager().getDefaultDisplay().getWidth() / 2);  popupWindow.setHeight(420);  popupWindow.setOutsideTouchable(true);  popupWindow.setFocusable(true);  popupWindow.setContentView(layout);  popupWindow.showAtLocation(findViewById(R.id.main), Gravity.LEFT   | Gravity.TOP, x, y);//需要指定Gravity，默認情況是center.  listView.setOnItemClickListener(new OnItemClickListener() {   @Override   public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,    long arg3) {   Toast.makeText(getBaseContext(), "您選擇了："+more[arg2], 1).show();   popupWindow.dismiss();   popupWindow = null;   }  });  }  /**  * 點擊+時彈出的popuwindow  */  public void showAddPopupWindow(int x, int y) {  layout = (LinearLayout) LayoutInflater.from(MainActivity.this).inflate(   R.layout.popupwindow_dialog, null);  listView = (ListView) layout.findViewById(R.id.lv_dialog);  listView.setAdapter(new ArrayAdapter<String>(MainActivity.this,   R.layout.text, R.id.tv_text, add));   popupWindow = new PopupWindow(MainActivity.this);  popupWindow.setBackgroundDrawable(new BitmapDrawable());  popupWindow   .setWidth(getWindowManager().getDefaultDisplay().getWidth() / 2);  popupWindow.setHeight(420);  popupWindow.setOutsideTouchable(true);  popupWindow.setFocusable(true);  popupWindow.setContentView(layout);  popupWindow.showAtLocation(findViewById(R.id.main), Gravity.LEFT   | Gravity.TOP, x, y);//需要指定Gravity，默認情況是center.  listView.setOnItemClickListener(new OnItemClickListener() {   @Override   public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,    long arg3) {   Toast.makeText(getBaseContext(), "您選擇了："+add[arg2], 1).show();   popupWindow.dismiss();   popupWindow = null;   }  });  } }