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

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" >

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" >

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" />

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"

/>

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"

/>

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

android:layout_width="match_parent"

android:layout_height="match_parent"

android:background="@drawable/click"

android:cacheColorHint="#00000000"

android:orientation="vertical" >

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" >

接着是每一个弹出框显示的文字text.xml

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical" >

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" />

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]

*/

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(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(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

由于本人没有图片，所以弹出框的背景图没有处理，弹出框中的每一项的前面也没有添加图片，有需要得同学可以自行添加。(效果已经出来了，细节没有调整，请大家见谅)

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。