录像机问题

Question

我正在做一个录制视频的应用程序。我得到了许多可以正常工作的示例，但问题是，当录制摄像头没有在纵向模式下打开时，它正在打开另一种模式。这是我使用的示例，包括xml文件：

package com.example.RecordVideo;

    import java.io.File;

    import android.app.Activity;
    import android.graphics.Camera;
    import android.media.MediaRecorder;
    import android.os.Bundle;
    import android.util.Log;
    import android.view.Surface;
    import android.view.SurfaceHolder;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.Button;
    import android.widget.MediaController;
    import android.widget.VideoView;
    public class MainActivity extends Activity implements SurfaceHolder.Callback, OnClickListener {
    private MediaRecorder recorder = null;
    private static final String OUTPUT_FILE = "/sdcard/videooutput.mp4";
    private static final String TAG = "RecordVideo";
    private VideoView videoView = null;
    private Button startBtn = null;
    Button endBtn;
    Button playRecordingBtn;
    Button stpPlayingRecordingBtn;
    SurfaceHolder mholder;
    File outFile ;
    Camera camera;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.recordvideo);

    startBtn = (Button) findViewById(R.id.bgnBtn);
    startBtn.setOnClickListener(this);
    endBtn = (Button) findViewById(R.id.stpBtn);
    endBtn.setOnClickListener(this);
    endBtn.setEnabled(false);
    playRecordingBtn = (Button) findViewById(R.id.playRecordingBtn);
    playRecordingBtn.setOnClickListener(this);
    stpPlayingRecordingBtn =(Button) findViewById(R.id.stpPlayingRecordingBtn);
    stpPlayingRecordingBtn.setOnClickListener(this);
    videoView = (VideoView)this.findViewById(R.id.videoView);
    playRecordingBtn.setEnabled(false);
    stpPlayingRecordingBtn.setEnabled(false);
    mholder = videoView.getHolder();
    mholder.addCallback(this);
    mholder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

        }
    //  @Override
        public void surfaceCreated(SurfaceHolder holder) {
        //setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);    
        startBtn.setEnabled(true);
        }
    //  @Override
        public void surfaceDestroyed(SurfaceHolder holder) {
        }
    //  @Override
        public void surfaceChanged(SurfaceHolder holder, int format, int width,
        int height) {
        Log.v(TAG, "Width x Height = " + width + "x" + height);
        }
        private void playRecording() {
        MediaController mc = new MediaController(this);
        videoView.setMediaController(mc);
        videoView.setVideoPath(OUTPUT_FILE);
        videoView.start();
        }
        private void stopPlayingRecording() {
        videoView.stopPlayback();
        }
        private void stopRecording() throws Exception {
        if (recorder != null) {
        recorder.stop();
        }
        }
        @Override
        protected void onDestroy() {
        super.onDestroy();
        if (recorder != null) {
        recorder.release();
        }
        }
        private void beginRecording(SurfaceHolder holder) throws Exception {
        if(recorder!=null)
        {
        recorder.stop();
        recorder.release();

        }
        outFile = new File(OUTPUT_FILE);
        if(outFile.exists())
        {
        outFile.delete();
        }
        try {

        recorder = new MediaRecorder();
        recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
        recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
        recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
        recorder.setVideoSize(480, 580);
        recorder.setVideoFrameRate(15);

        recorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
        recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
        recorder.setMaxDuration(60000*10); // limit to 10 minutes
        recorder.setPreviewDisplay(mholder.getSurface());
        recorder.setOutputFile(OUTPUT_FILE);
        recorder.prepare();
        recorder.start();
        }
        catch(Exception e) {
        Log.e(TAG, e.toString());     
        e.printStackTrace();
        }
        }
        public Surface getSurface()
        {
            return mholder.getSurface();
        }
        public void onClick(View v) {
            // TODO Auto-generated method stub
            if(v.equals(startBtn))
            {
                try {
                    endBtn.setEnabled(true);
                    startBtn.setEnabled(false);
                    playRecordingBtn.setEnabled(false);
                    stpPlayingRecordingBtn.setEnabled(false);
                    beginRecording(mholder);
                    } catch (Exception e) {
                    Log.e(TAG, e.toString());
                    e.printStackTrace();
                    }
            }
            if(v.equals(endBtn))
            {
                try {
                    startBtn.setEnabled(false);
                    endBtn.setEnabled(false);
                    playRecordingBtn.setEnabled(true);
                    stpPlayingRecordingBtn.setEnabled(false);
                stopRecording();
                } catch (Exception e) {
                Log.e(TAG, e.toString());
                e.printStackTrace();
                }
            }
            if(v.equals(playRecordingBtn))
            {
                try {
                    startBtn.setEnabled(false);
                    endBtn.setEnabled(false);
                    playRecordingBtn.setEnabled(false);
                    stpPlayingRecordingBtn.setEnabled(true);
                playRecording();
                } catch (Exception e) {
                Log.e(TAG, e.toString());
                e.printStackTrace();
                }
            }
            if(v.equals(stpPlayingRecordingBtn))
            {
                try {
                    startBtn.setEnabled(false);
                    endBtn.setEnabled(false);
                    playRecordingBtn.setEnabled(true);
                    stpPlayingRecordingBtn.setEnabled(false);
                stopPlayingRecording();
                } catch (Exception e) {
                Log.e(TAG, e.toString());
                e.printStackTrace();
                }
            }
        }
    }

XML文件是：

    <?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"
 >
 <VideoView
        android:id="@+id/videoView"
        android:layout_width="480px"
        android:layout_height="580px"
        android:keepScreenOn="true" 
        />
        <LinearLayout 
 android:orientation="horizontal"
 android:layout_width="fill_parent"
 android:layout_height="80px"
 >
        <Button
 android:id="@+id/bgnBtn"
 android:layout_width="150px"
 android:layout_marginLeft="80px"
 android:layout_height="wrap_content"
 android:text="Start"
 />
<Button
 android:id="@+id/stpBtn"
 android:layout_width="150px"
  android:layout_marginLeft="40px"
 android:layout_height="wrap_content"
 android:text="Cancel"
 />
 </LinearLayout>
 <LinearLayout 
 android:orientation="horizontal"
 android:layout_width="fill_parent"
 android:layout_height="80px"
 >
        <Button
 android:id="@+id/playRecordingBtn"
 android:layout_width="150px"
 android:layout_marginLeft="80px"
 android:layout_height="wrap_content"
 android:text="Play"
 />
<Button
 android:id="@+id/stpPlayingRecordingBtn"
 android:layout_width="150px"
  android:layout_marginLeft="40px"
 android:layout_height="wrap_content"
 android:text="Stop"
 />
 </LinearLayout>
</LinearLayout>

我还添加了权限，我想要的是1.视频录制应该在纵向模式打开2.视频剪辑可以在android中进行吗？

请帮帮我。提前感谢

Answer 1

伙计，你需要一些修复，因为这个错误已经(我认为它是错误)了(我认为它是错误)，你需要将这样的代码添加到surfaceChanged()

if(getResources().getConfiguration().orientation== Configuration.ORIENTATION_PORTRAIT)
            {
                camera.setDisplayOrientation(90);
                p.setRotation(90);
            }
            else
            {
                p.setRotation(0);
                camera.setDisplayOrientation(0);
            }

简单的代码...也许很愚蠢，但它已经解决了这个问题。附注：从2.2开始，我认为这是工作。if < than代码对您没有帮助