写下关于popwindow

主要是代码，参考了http://blog.csdn.net/Android_Tutor/archive/2010/05/10/5576533.aspx

popwindow.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent">
<TextView
	android:id="@+id/textview"
	android:layout_width="fill_parent"
	android:layout_height="wrap_content"
	android:text="测试"
	/>
<Button
	android:id="@+id/test"
	android:layout_width="fill_parent"
	android:layout_height="wrap_content"
	android:text="测试"
	/>
</LinearLayout>

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:id="@+id/main"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<VideoView
	android:id="@+id/videoshow"
	android:layout_width="fill_parent"
	android:layout_height="fill_parent"
	/>
</LinearLayout>

Activity01.java

package com.overflow.testvideo;

import java.util.Timer;
import java.util.TimerTask;
import android.app.Activity;
import android.content.Context;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.MediaController;
import android.widget.PopupWindow;
import android.widget.TextView;
import android.widget.VideoView;
public class Activity01 extends Activity {
	VideoView vv = null;
	Button btn = null;
	TextView textview = null;
    /** Called when the activity is first created. */
	private Handler mHandler = new Handler(){
		
		public void handleMessage(Message msg) {
			switch (msg.what) {
			case 1:
				showPopupWindow();
				break;
			}
		};
	};
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        setContentView(R.layout.main);
        Timer timer = new Timer();
        timer.schedule(new initPopupWindow(), 100);
        //textview = (TextView) music_popunwindwow.
        //btn = (Button) this.findViewById(R.id.test);
        
        vv = (VideoView) this.findViewById(R.id.videoshow);
        vv.setVideoURI(Uri.parse("android.resource://com.overflow.testvideo/"+R.raw.underwater));  
        vv.setMediaController(new MediaController(this));
        vv.start();
        
        vv.setOnTouchListener(new VideoView.OnTouchListener() {
			@Override
			public boolean onTouch(View v, MotionEvent event) {
				// TODO Auto-generated method stub
				return true;
			}
        	
        });
        
        
        
        
    }
    
    private class initPopupWindow extends TimerTask{
		@Override
		public void run() {
			
			Message message = new Message();
			message.what = 1;
			mHandler.sendMessage(message);
			
		}   	
    }
    
    
	public void showPopupWindow() {
		Context mContext = Activity01.this;
		LayoutInflater mLayoutInflater = (LayoutInflater) mContext
				.getSystemService(LAYOUT_INFLATER_SERVICE);
		View music_popunwindwow = mLayoutInflater.inflate(
				R.layout.popwindow, null);
		PopupWindow mPopupWindow = new PopupWindow(music_popunwindwow,
				LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
		
		mPopupWindow.showAtLocation(findViewById(R.id.main), Gravity.CENTER, 0, 0);
		
		btn = (Button) music_popunwindwow.findViewById(R.id.test);
		textview = (TextView) music_popunwindwow.findViewById(R.id.textview);
		
		btn.setOnClickListener(new Button.OnClickListener() {
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				textview.setText("测试成功");
			}
        	
        });
		
		
	}

	
}

记得要dismiss(),否则返回会报错，难点在要触发popwindow上的事件，就必须是这个popwindow下来findviewbyid,否则就报错

本来这个东西的最初目的是写动态背景，但失败了，蛮多限制。贴上代码，以后可能需要。

还一些参考文章：http://www.cmd100.com/bbs/thread-111-1-1.html

http://mobile.51cto.com/android-254829.htm