Android 播放音乐文件与视频文

03.import android.app.Activity;  
04.import android.media.MediaPlayer;  
05.import android.net.Uri;  
06.import android.os.Bundle;  
07.import android.os.Environment;  
08.import android.view.View;  
09.import android.view.View.OnClickListener;  
10.import android.widget.Button;  
11.import android.widget.MediaController;  
12.import android.widget.TextView;  
13.import android.widget.VideoView;  
14.  
15.public class TestActivity extends Activity {  
16.  
17.    Button mPlayMusic = null;  
18.    Button mStopMusic = null;  
19.    Button mPlayVido = null;  
20.    Button mStopVido = null;  
21.  
22.    TextView mTextView = null;  
23.    VideoView mVideoView;  
24.    Uri mUri;  
25.  
26.    MediaPlayer mMediaMusic = null;  
27.    MediaPlayer mMediaVido = null;  
28.  
29.    @Override  
30.    public void onCreate(Bundle savedInstanceState) {  
31.        super.onCreate(savedInstanceState);  
32.        setContentView(R.layout.main);  
33.        mPlayMusic = (Button) findViewById(R.id.btn_01);  
34.        mStopMusic = (Button) findViewById(R.id.btn_02);  
35.        mPlayVido = (Button) findViewById(R.id.btn_03);  
36.        mStopVido = (Button) findViewById(R.id.btn_04);  
37.  
38.        // 创建MediaPlayer 这里用的音频格式是mp3  
39.        mMediaMusic = MediaPlayer.create(this, R.raw.music);  
40.  
41.        // 创建视频播放视图  
42.        mVideoView = (VideoView) findViewById(R.id.vidoView);  
43.  
44.        // sd卡下文件的路径(这是我录的一段汤姆猫的录像)  
45.        mUri = Uri.parse(Environment.getExternalStorageDirectory() + "/TalkingFriends/TalkingTom.mp4");  
46.  
47.        // 设置MediaController  
48.        mVideoView.setMediaController( new MediaController(this));  
49.  
50.        // 设置音频循环播放  
51.        mMediaMusic.setLooping(true);  
52.  
53.        mTextView = (TextView) findViewById(R.id.textView);  
54.  
55.        // 播放声音  
56.        mPlayMusic.setOnClickListener(new OnClickListener() {  
57.            @Override  
58.            public void onClick(View v) {  
59.                mTextView.setText("开始播放音频");  
60.                if (!mMediaMusic.isPlaying()) {  
61.                    mMediaMusic.start();  
62.                }  
63.  
64.            }  
65.        });  
66.        // 关闭声音  
67.        mStopMusic.setOnClickListener(new OnClickListener() {  
68.            @Override  
69.            public void onClick(View v) {  
70.                mTextView.setText("停止播放音频");  
71.                if (mMediaMusic.isPlaying()) {  
72.                    mMediaMusic.stop();  
73.                }  
74.            }  
75.        });  
76.  
77.        // 播放视频  
78.        mPlayVido.setOnClickListener(new OnClickListener() {  
79.  
80.            @Override  
81.            public void onClick(View v) {  
82.                mTextView.setText("开始播放视频");  
83.                mVideoView.setVideoURI(mUri);  
84.                mVideoView.start();  
85.            }  
86.        });  
87.  
88.        // 关闭视频  
89.        mStopVido.setOnClickListener(new OnClickListener() {  
90.  
91.            @Override  
92.            public void onClick(View v) {  
93.                mTextView.setText("停止播放视频");  
94.                mVideoView.stopPlayback();  
95.            }  
96.        });  
97.    }  
98.}  

布局文件

<pre class="html" name="code">01.<?xml version="1.0" encoding="utf-8"?>  
02.<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
03.    android:orientation="vertical"  
04.    android:layout_width="fill_parent"  
05.    android:layout_height="fill_parent"  
06.    >  
07.<TextView    
08.    android:layout_width="fill_parent"   
09.    android:layout_height="wrap_content"   
10.    android:id="@+id/textView"  
11.    />  
12.    <Button android:id="@+id/btn_01" android:layout_height="50dip"  
13.            android:text="播放音频" android:layout_width="150dip"/>  
14.    <Button android:id="@+id/btn_02" android:layout_height="50dip"  
15.            android:text="关闭音频" android:layout_width="150dip"/>  
16.    <Button android:id="@+id/btn_03" android:layout_height="50dip"  
17.            android:text="播放视频" android:layout_width="150dip"/>  
18.    <Button android:id="@+id/btn_04" android:layout_height="50dip"  
19.            android:text="关闭视频" android:layout_width="150dip"/>  
20.    <VideoView  
21.    android:layout_width="fill_parent"   
22.    android:layout_height="wrap_content"   
23.    android:id="@+id/vidoView"  
24.    />  
25.</LinearLayout>  
</pre>