内置影片播放器载入 3GP 电影－－VideoView

最新推荐文章于 2025-08-08 23:51:41 发布

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#android #string #internet #basic #button #file

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本文介绍如何创建带有SD卡的Android模拟器，并演示了如何将文件推送到模拟器的SD卡中，还提供了一个简单的示例程序用于检测SD卡是否存在并播放SD卡上的视频。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

创建一个有SD 卡的模拟器（粗体文字是命令）

我设置了相关的环境变量

root@May:~/桌面# android create avd -n three -t 3 -c 128M

Android 1.6 is a basic Android platform.

Do you wish to create a custom hardware profile [no]

Created AVD 'three' based on Android 1.6,

with the following hardware config:

hw.lcd.density=240

root@May:~/桌面# android list avd

Available Android Virtual Devices:

Name: three

Path: /root/.android/avd/three.avd

Target: Android 1.6 (API level 4)

Skin: WVGA800

Sdcard: 128M

然后往模拟器中复制一个3gp的文件

root@May:~/桌面# adb push /root/桌面/test.3gp /sdcard/

1355 KB/s (504030 bytes in 0.363s)

root@May:~/桌面# adb shell

# ls

sqlite_stmt_journals

cache

sdcard

etc

system

sys

sbin

proc

init.rc

init.goldfish.rc

init

default.prop

data

root

dev

# cd sdcard

# ls

LOST.DIR

test.3gp

# exit

public class Hello extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        getWindow().setFormat(PixelFormat.TRANSLUCENT);
     //   setContentView(R.layout.main);
        setContentView(R.layout.main);
        if(android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED))
        		existSD=true;
        else
        {
        	existSD=false;
        	mMakeTextToast("no sd card",true);
        }
        findview();
    btn.setOnClickListener(new OnClickListener()
        {
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				if(b)
				{
					b=!b;
					playVideo("file:///sdcard/test.3gp");
				}
			}
			private void playVideo(String string) {
				// TODO Auto-generated method stub
				if(string!="")
				{
					vv.setVideoURI(Uri.parse(string));
					vv.setMediaController(new MediaController(Hello.this));
					vv.requestFocus();
					vv.start();
					if(vv.isPlaying())
					{
						//vv.
					}
				}
				
			}
        	
        });
    
    vv.setOnPreparedListener(new MediaPlayer.OnPreparedListener()
    {
    
		@Override
		public void onPrepared(MediaPlayer arg0) {
			// TODO Auto-generated method stub
			btn.setText("file:///sdcard/test.3gp");
		}
    	
    });
    vv.setOnCompletionListener(new MediaPlayer.OnCompletionListener()
    {
    	@Override
    	public void onCompletion(MediaPlayer arg)
    	{
    		mMakeTextToast
    		("finisthed",true);
    	}
    });
}
    public void mMakeTextToast(String string, boolean b) {
		// TODO Auto-generated method stub
    	if(b)
    		Toast.makeText(Hello.this, string, Toast.LENGTH_SHORT).show();
    	else Toast.makeText(Hello.this, string, Toast.LENGTH_SHORT).show();
		
	}
    private void findview()
    {
    	vv=(VideoView)findViewById(R.id.vv);
    	btn=(Button)findViewById(R.id.button1);
    }
	boolean existSD=false;
	VideoView vv;
	Button btn;
	boolean b=true;
}

设置回放：

seekTo(0);

若要实现手机上网(Surf Internet )看影片的功能，只要对主程序稍作修改，即可用VideoView 观。

在AndroidManifest.xml里添加访问权限。

＜uses-permission android:name="android.permission.INTERNET">

</uses-permission>

<uses-permission android:name="android.permission.WAKE_LOCK">

</uses-permission>

file:///sdcard/test.3gp 替换成 http://somewhere.com/test.mp4

就OK了。