Android 비디오 레코더를 만들 때 setMaxDuration을 생성하지 못했습니다.

Question

현재 인트로를 사용하지 않고 Android에서 간단한 비디오 레코더를 만들려고합니다. 내 코드는

 
import java.io.IOException;
 

import android.app.Activity; 
import android.media.MediaRecorder; 
import android.net.NetworkInfo; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.SurfaceHolder; 
import android.view.SurfaceView;
 

public class CameraActivity extends Activity implements SurfaceHolder.Callback { 
    public enum State { 
     UNKNOWN, CONNECTED, NOT_CONNECTED 
    }
 

SurfaceView cameraView; 
SurfaceHolder holder; 
public boolean mListening; 
public Object mState; 
public NetworkInfo mNetworkInfo; 

public boolean mSending; 

boolean recording = false; 
public static final String TAG = "VIDEOCAPTURE"; 
private MediaRecorder recorder; 

protected void captureVideo() { 
    if (recording) { 
     recorder.stop(); 
     // recorder.release(); 
     recording = false; 
     Log.v(TAG, "Recording Stopped"); 
     // Let's initRecorder so we can record again 
     initRecorder(); 
     prepareRecorder(); 
    } else { 
     recording = true; 
     recorder.start(); 
     Log.v(TAG, "Recording Started"); 
    } 

} 

private void initRecorder() { 
    recorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT); 
    recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT); 
    recorder.setOutputFile("/sdcard/videocapture_example.mp4"); 
    recorder.setMaxDuration(50000); // 50 seconds 
    recorder.setMaxFileSize(5000000); 
} 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    recorder = new MediaRecorder(); 
    initRecorder(); 
    setContentView(R.layout.main); 
    cameraView = (SurfaceView) this.findViewById(R.id.CameraView); 
    holder = cameraView.getHolder(); 
    holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 
    holder.addCallback(this); 
} 

private void prepareRecorder() { 
    recorder.setPreviewDisplay(holder.getSurface()); 
    try { 
     recorder.prepare(); 
    } catch (IllegalStateException e) { 
     e.printStackTrace(); 
     finish(); 
    } catch (IOException e) { 
     e.printStackTrace(); 
     finish(); 
    } 
} 

@Override 
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { 
} 

@Override 
public void surfaceCreated(SurfaceHolder holder) { 
    Log.v(TAG, "surfaceCreated"); 
    prepareRecorder(); 
} 

@Override 
public void surfaceDestroyed(SurfaceHolder holder) { 
    // camera.stopPreview(); 
    // camera.release(); 
    Log.v(TAG, "surfaceDestroyed"); 
    if (recording) { 
     recorder.stop(); 
     recording = false; 
    } 
    recorder.release(); 
    finish(); 
} 

}

을 따르고 그러나 내가 로그 캣에서, 에뮬레이터 내에서이 코드를 배포 할 때이 같은 몇 가지 오류를 얻었다.

java.lang.RuntimeException가 : 활동 ComponentInfo를 시작할 수 없습니다 ...

java.lang.RuntimeException가 : setMaxDuration에 실패했습니다. android.media.MediaRecorder.setMaxDuration (기본 메소드)

내 코드가 잘못되었습니다.

Answer 1

견적 : http://developer.android.com/reference/android/media/MediaRecorder.html : "참고 : 현재 MediaRecorder는 에뮬레이터에서 작동하지 않습니다."