全屏视频视图,无需拉伸视频

Question

我想知道我是否可以通过全屏视频播放视频？

我经常搜索并尝试了很多方法,例如:

1. 在清单中应用主题:

   android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
   

   但这并不会强制视频全屏显示.

2. 申请活动本身:

   requestWindowFeature(Window.FEATURE_NO_TITLE);  
   getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,  
       WindowManager.LayoutParams.FLAG_FULLSCREEN);
   

   也不会强制视频全屏显示.

强制视频全屏显示的唯一方法是:

<VideoView android:id="@+id/myvideoview"
    android:layout_width="fill_parent"
    android:layout_alignParentRight="true"
    android:layout_alignParentLeft="true" 
    android:layout_alignParentTop="true" 
    android:layout_alignParentBottom="true" 
    android:layout_height="fill_parent"> 
</VideoView> 

这样它就会产生全屏视频,但它会延伸视频本身(拉长视频),

我没有将这个不正确的解决方案应用到我的视频中,所以有没有办法在不延长视频的情况下进行操作？

视频课程:

public class Video extends Activity {
    private VideoView myvid;

    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.main);
        myvid = (VideoView) findViewById(R.id.myvideoview);
        myvid.setVideoURI(Uri.parse("android.resource://" + getPackageName() 
            +"/"+R.raw.video_1));
        myvid.setMediaController(new MediaController(this));
        myvid.requestFocus();
        myvid.start();
    }
}

main.xml中:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <VideoView
        android:id="@+id/myvideoview"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" />

</LinearLayout>

Answer 1

像这样你可以自己设置视频的属性.

使用SurfaceView(为视图提供更多控制),将其设置为fill_parent以匹配整个屏幕

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     
              android:orientation="vertical" 
              android:layout_width="match_parent"
              android:layout_height="fill_parent">

    <SurfaceView
        android:id="@+id/surfaceViewFrame"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_gravity="center" >
    </SurfaceView>
</Linearlayout>

然后在你的java代码上获取表面视图并添加你的媒体播放器

surfaceViewFrame = (SurfaceView) findViewById(R.id.surfaceViewFrame);
player = new MediaPlayer();
player.setDisplay(holder);

在媒体播放器上设置onPreparedListener并手动计算所需的视频大小,以所需的比例填充屏幕,避免拉伸视频!

player.setOnPreparedListener(new OnPreparedListener() {

        @Override
        public void onPrepared(MediaPlayer mp) {
                    // Adjust the size of the video
    // so it fits on the screen
    int videoWidth = player.getVideoWidth();
    int videoHeight = player.getVideoHeight();
    float videoProportion = (float) videoWidth / (float) videoHeight;       
    int screenWidth = getWindowManager().getDefaultDisplay().getWidth();
    int screenHeight = getWindowManager().getDefaultDisplay().getHeight();
    float screenProportion = (float) screenWidth / (float) screenHeight;
    android.view.ViewGroup.LayoutParams lp = surfaceViewFrame.getLayoutParams();

    if (videoProportion > screenProportion) {
        lp.width = screenWidth;
        lp.height = (int) ((float) screenWidth / videoProportion);
    } else {
        lp.width = (int) (videoProportion * (float) screenHeight);
        lp.height = screenHeight;
    }
    surfaceViewFrame.setLayoutParams(lp);

    if (!player.isPlaying()) {
        player.start();         
    }

        }
    });

我从一段时间前的视频流教程中对此进行了修改,现在无法找到引用它,如果有人请将链接添加到答案中!

希望能帮助到你!

编辑

好的,所以,如果你想让视频占据整个屏幕并且你不希望它被拉伸,那么你的两侧最终会出现黑色条纹.在我发布的代码中,我们发现了更大的内容,视频或手机屏幕,并以最佳方式进行调整.

在那里,您有我的完整活动,从链接流式传输视频.它是100%功能.我不能告诉你如何从你自己的设备播放视频,因为我不知道.我相信你会在这里或这里的文档中找到它.

public class VideoPlayer extends Activity implements Callback, OnPreparedListener, OnCompletionListener, 
    OnClickListener {   

private SurfaceView surfaceViewFrame;
private static final String TAG = "VideoPlayer";
private SurfaceHolder holder;
private ProgressBar progressBarWait;
private ImageView pause;
private MediaPlayer player; 
private Timer updateTimer;
String video_uri = "http://daily3gp.com/vids/familyguy_has_own_orbit.3gp";  


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.videosample);       


    pause = (ImageView) findViewById(R.id.imageViewPauseIndicator);
    pause.setVisibility(View.GONE);
    if (player != null) {
        if (!player.isPlaying()) {
            pause.setVisibility(View.VISIBLE);
        }
    }


    surfaceViewFrame = (SurfaceView) findViewById(R.id.surfaceViewFrame);
    surfaceViewFrame.setOnClickListener(this);
    surfaceViewFrame.setClickable(false);

    progressBarWait = (ProgressBar) findViewById(R.id.progressBarWait);

    holder = surfaceViewFrame.getHolder();
    holder.addCallback(this);
    holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

    player = new MediaPlayer();
    player.setOnPreparedListener(this);
    player.setOnCompletionListener(this);
    player.setScreenOnWhilePlaying(true);
    player.setDisplay(holder);
}

private void playVideo() {
        new Thread(new Runnable() {
            public void run() {
                try {
                    player.setDataSource(video_uri);
                    player.prepare();
                } catch (Exception e) { // I can split the exceptions to get which error i need.
                    showToast("Error while playing video");
                    Log.i(TAG, "Error");
                    e.printStackTrace();
                } 
            }
        }).start();     
}

private void showToast(final String string) {
    runOnUiThread(new Runnable() {
        public void run() {
            Toast.makeText(VideoPlayer.this, string, Toast.LENGTH_LONG).show();
            finish();
        }
    });
}


public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
    // TODO Auto-generated method stub

}

public void surfaceCreated(SurfaceHolder holder) {
    playVideo();
}

public void surfaceDestroyed(SurfaceHolder holder) {
    // TODO Auto-generated method stub

}
//prepare the video
public void onPrepared(MediaPlayer mp) {        
    progressBarWait.setVisibility(View.GONE);

    // Adjust the size of the video
    // so it fits on the screen
    int videoWidth = player.getVideoWidth();
    int videoHeight = player.getVideoHeight();
    float videoProportion = (float) videoWidth / (float) videoHeight;       
    int screenWidth = getWindowManager().getDefaultDisplay().getWidth();
    int screenHeight = getWindowManager().getDefaultDisplay().getHeight();
    float screenProportion = (float) screenWidth / (float) screenHeight;
    android.view.ViewGroup.LayoutParams lp = surfaceViewFrame.getLayoutParams();

    if (videoProportion > screenProportion) {
        lp.width = screenWidth;
        lp.height = (int) ((float) screenWidth / videoProportion);
    } else {
        lp.width = (int) (videoProportion * (float) screenHeight);
        lp.height = screenHeight;
    }
    surfaceViewFrame.setLayoutParams(lp);

    if (!player.isPlaying()) {
        player.start();         
    }
    surfaceViewFrame.setClickable(true);
}

// callback when the video is over
public void onCompletion(MediaPlayer mp) {
    mp.stop();
    if (updateTimer != null) {
        updateTimer.cancel();
    }
    finish();
}

//pause and resume
public void onClick(View v) {
    if (v.getId() == R.id.surfaceViewFrame) {
         if (player != null) {
            if (player.isPlaying()) {
                player.pause();
                pause.setVisibility(View.VISIBLE);
            } else {
                player.start();
                pause.setVisibility(View.GONE);
            }
        }
    }
}

}

Answer 2

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        videoView1 = (VideoView) findViewById(R.id.videoview);
                String SrcPath = "/mnt/sdcard/final.mp4";
        videoView1.setVideoPath(SrcPath);
        videoView1.setMediaController(new MediaController(this));
        videoView1.requestFocus();      
        videoView1.start();     
    }
}




<VideoView
    android:id="@+id/videoview"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_alignParentBottom="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentRight="true"
    android:layout_alignParentTop="true" >
</VideoView>

试试这个，它对我有用