PopupWindow仿微信浮层弹出框效果

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最近公司项目需要实现类似微信的浮层弹出框。研究发现是用PopupWindow实现的。而且可以自定义位置以及出现和退出时的动画，由于太晚了就不实现动画了，需要得同学请自己研究下。由于本人新手其中的不足和缺点请见谅。

代码如下：

首先是定义顶部按钮的main.xml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: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>

其次是定义弹出框PopupWindow的popupwindow_dialog.xml

<?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>

接着是每一个弹出框显示的文字text.xml

<?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>

最后是主界面的MainActivity.java

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 标题 
 *@description 仿微信顶部弹出框的popuwindow 
 *@author zhengxiaolin 
 *@version 1.0 
 *@created 2014-5-23 上午12:11:11 
 *@changeRecord [修改记录]<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 = {"我的相册","我的收藏","我的银行卡","设置","意见反馈"}; 
 private String[] add ={"发起群聊","添加朋友","视屏聊天","扫一扫","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，默认情况是center. 
 listView.setOnItemClickListener(new OnItemClickListener() { 
  @Override 
  public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, 
   long arg3) { 
  Toast.makeText(getBaseContext(), "您选择了："+more[arg2], 1).show(); 
  popupWindow.dismiss(); 
  popupWindow = null; 
  } 
 }); 
 } 
 /** 
 * 点击+时弹出的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，默认情况是center. 
 listView.setOnItemClickListener(new OnItemClickListener() { 
  @Override 
  public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, 
   long arg3) { 
  Toast.makeText(getBaseContext(), "您选择了："+add[arg2], 1).show(); 
  popupWindow.dismiss(); 
  popupWindow = null; 
  } 
 }); 
 } 
}

好了，主要代码就完成了，实现效果如下所示