Android API8 setDisplayOrientation non ha alcun effetto

Question

Ho lavorato con SOLO VIDEO. Nessuna immagine. Notato, che setDisplayOrientation influisce sull'orientamento destro del display solo durante l'anteprima. Ma se per riprodurre qualsiasi video acquisito in modalità orizzontale o verticale è sempre in modalità orizzontale.

ho impostato in AndroidManifest.xml

ma utilizzato per eseguire il debug in 4.0.1 dispositivo. Forse è un problema. Tuttavia ho notato che l'app fotocamera predefinita funziona bene e cattura i film in modalità ritratto.

Cosa mi manca? ...

** CameraRecorder.java

public class CameraRecorder extends Activity { 

private CameraPreview mPreview; 
private Camera mCamera; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.camera_surface); 

    // Create an instance of Camera 
    mCamera = getCameraInstance(); 
    if (mCamera == null) { 
     Log.e(TAG, "Camera is not available"); 
     finish(); 
    } 

    // Create our Preview view and set it as the content of our activity. 
    mPreview = new CameraPreview(this, mCamera); 
    FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview); 
    preview.addView(mPreview); 

    mPreview.setOnClickListener(startStopListener); 
} 
private void changeOrientation(int what) { 
    if (what != orientation) { 
     setRequestedOrientation(orientation = what); 
    } 
} 
OnClickListener startStopListener = new OnClickListener() { 

    @Override 
    public void onClick(View v) { 
     // TODO Auto-generated method stub 
     if (isRecording) { 
        mMediaRecorder.stop(); // stop the recording 
      releaseMediaRecorder(); // release the MediaRecorder object 
      mCamera.lock(); // take camera access back from MediaRecorder 

      // inform the user that recording has stopped 
      setCaptureButtonText("Capture"); 
      isRecording = false; 

     } else { 
      // initialize video camera 
      if (prepareVideoRecorder()) { 
       // Camera is available and unlocked, MediaRecorder is 
       // prepared, now you can start recording 
       mMediaRecorder.start(); 

       // inform the user that recording has started 
       isRecording = true; 
      } else { 
       // prepare didn't work, release the camera 
       releaseMediaRecorder(); 
      } 
     } 

    } 
}; 

File tempFile; 

@Override 
protected void onPause() { 
    super.onPause(); 
    releaseMediaRecorder(); // if you are using MediaRecorder, release it first 
    releaseCamera(); // release the camera immediately on pause event 
} 

/** A safe way to get an instance of the Camera object. */ 
public static Camera getCameraInstance() { 
    Camera c = null; 
     try { 
      c = Camera.open(); // attempt to get a Camera instance 

     } catch (Exception e) { 
      // Camera is not available (in use or does not exist) 

      Log.d(TAG, "Fail to connect to camera service. Is it locked?"); 
     } 
    } 
    return c; // returns null if camera is unavailable 
} 

private boolean prepareVideoRecorder() { 
    if (mCamera == null) 
     mCamera = getCameraInstance(); 
    if (mMediaRecorder == null) 
     mMediaRecorder = new MediaRecorder(); 

    Camera.Parameters p = mCamera.getParameters(); 

    // Step 1: Unlock and set camera to MediaRecorder 
    mCamera.unlock(); 
    mMediaRecorder.setCamera(mCamera); 

    // Step 2: Set sources 
    mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER); 
    mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); 

    // Step 3: Set a CamcorderProfile (requires API Level 8 or higher) 
    CamcorderProfile profile = mPreview.getProfile();// CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH); 

    Size previewSize = mPreview.getPreviewSize(); 

    if (previewSize != null) { 
     profile.videoFrameWidth = previewSize.width; 
     profile.videoFrameHeight = previewSize.height; 
    } 
    mMediaRecorder.setProfile(profile); 

    // Step 4: Set output file 
    mMediaRecorder.setOutputFile(MediaFile.getOutputMediaFile(MEDIA_TYPE_VIDEO).toString()); 

    // Step 5: Set the preview output 
    mMediaRecorder.setPreviewDisplay(mPreview.getHolder().getSurface()); 

    // Step 6: Prepare configured MediaRecorder 
    try { 
     mMediaRecorder.prepare(); 
    } catch (IllegalStateException e) { 
     Log.d(TAG, "IllegalStateException preparing MediaRecorder: " + e.getMessage()); 
     releaseMediaRecorder(); 
     return false; 
    } catch (IOException e) { 
     Log.d(TAG, "IOException preparing MediaRecorder: " + e.getMessage()); 
     releaseMediaRecorder(); 
     return false; 
    } 
    return true; 
} 

private void releaseMediaRecorder() { 
    if (mMediaRecorder != null) { 
     mMediaRecorder.reset(); // clear recorder configuration 
     mMediaRecorder.release(); // release the recorder object 
     mMediaRecorder = null; 
     mCamera.lock(); // lock camera for later use 
    } 
} 

private void releaseCamera() { 
    if (mPreview != null) { 
     mPreview.surfaceDestroyed(null); 
    } 
    if (mCamera != null) { 
     mCamera.release(); // release the camera for other applications 
     mCamera = null; 
     Log.d(TAG, "Camera released"); 
    } 
} 
} 

CameraPreview.java

/** A basic Camera preview class */ 
public class CameraPreview extends ViewGroup implements SurfaceHolder.Callback { 
private SurfaceHolder mHolder; 
private Camera mCamera; 
private SurfaceView mSurfaceView; 
private Context mContext; 

private final String TAG = "CameraPreview"; 

public CameraPreview(Context context, Camera camera) { 
    super(context); 
    mContext = context; 

    mCamera = camera; 

    setCamera(mCamera); 

    mSurfaceView = new SurfaceView(context); 
    addView(mSurfaceView, 0); 
    mHolder = mSurfaceView.getHolder(); 
    mHolder.addCallback(this); 
    mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 
    mHolder.setKeepScreenOn(true); 

} 

public SurfaceHolder getHolder() { 
    return mSurfaceView.getHolder(); 
} 

private Size mPreviewSize; 
private List<Size> mSupportedPreviewSizes; 
private List<String> mSupportedFlashModes; 

public Camera getCamera() { 
    return mCamera; 
} 

private CamcorderProfile mProfile; 

public CamcorderProfile getProfile() { 
    return mProfile; 
} 

public void setCamera(Camera camera) { 
    mCamera = camera; 
    if (mCamera != null) { 
     mSupportedPreviewSizes = mCamera.getParameters().getSupportedPreviewSizes(); 
     mSupportedFlashModes = mCamera.getParameters().getSupportedFlashModes(); 

       mProfile = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH); 

     // Set the camera to Auto Flash mode. 
     if (mSupportedFlashModes != null && mSupportedFlashModes.contains(Camera.Parameters.FLASH_MODE_AUTO)) { 
      Camera.Parameters parameters = mCamera.getParameters(); 
      parameters.setFlashMode(Camera.Parameters.FLASH_MODE_AUTO); 
      mCamera.setParameters(parameters); 
     } 
    } 
    requestLayout(); 
} 

@Override 
public void surfaceCreated(SurfaceHolder holder) { 
    // The Surface has been created, now tell the camera where to draw the preview. 
    try { 
     if (mCamera != null) { 
      mCamera.setPreviewDisplay(holder); 
      // mCamera.startPreview(); 
     } 
    } catch (IOException e) { 
     Log.d(TAG, "Error setting camera preview: " + e.getMessage()); 
    } 
} 

@Override 
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 
    final int width = resolveSize(getSuggestedMinimumWidth(), widthMeasureSpec); 
    final int height = resolveSize(getSuggestedMinimumHeight(), heightMeasureSpec); 

    if (mSupportedPreviewSizes != null) { 
     mPreviewSize = getOptimalPreviewSize(mSupportedPreviewSizes, mProfile.videoFrameWidth, mProfile.videoFrameHeight); 
    } 
    setMeasuredDimension(width, height); 
} 

@Override 
protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 
    if (changed) { 
     final View cameraView = getChildAt(0); 

     final int width = right - left; 
     final int height = bottom - top; 

     Camera.Parameters p = mCamera.getParameters(); 

     @SuppressWarnings("unused") 
     int previewWidth = width; 
     @SuppressWarnings("unused") 
     int previewHeight = height; 
     if (mPreviewSize != null) { 
      Display display = ((WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay(); 

      switch (display.getRotation()) { 
      case Surface.ROTATION_0: 
       mCamera.setDisplayOrientation(90); 
       break; 
      case Surface.ROTATION_90: 
      case Surface.ROTATION_180: 
       break; 
      case Surface.ROTATION_270: 
       mCamera.setDisplayOrientation(180); 
       break; 
      } 
     } 

     cameraView.layout(0, 0, width, height); 

    } 
} 

public void setSupportedPreviewSizes(List<Size> supportedPreviewSizes) { 
    mSupportedPreviewSizes = supportedPreviewSizes; 
} 

@Override 
public void surfaceDestroyed(SurfaceHolder holder) { 
    // Surface will be destroyed when we return, so stop the preview. 
    // Because the CameraDevice object is not a shared resource, it's very 
    // important to release it when the activity is paused. 
    try { 
     if (mCamera != null) { 
      mCamera.stopPreview(); 
      mCamera.setPreviewCallback(null); 
      // mCamera.release(); 
      mCamera = null; 

      Log.d(TAG, "Preview destroyed"); 
     } 
    } catch (Exception e) { 
     Log.e(TAG, "Camera release failure."); 
    } 

} 

@Override 
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { 
    // If your preview can change or rotate, take care of those events here. 
    // Make sure to stop the preview before resizing or reformatting it. 

    if (mHolder.getSurface() == null) { 
     // preview surface does not exist 
     return; 
    } 

    // stop preview before making changes 
    try { 
     mCamera.stopPreview(); 
    } catch (Exception e) { 
     // ignore: tried to stop a non-existent preview 
    } 

    // set preview size and make any resize, rotate or 
    // reformatting changes here 

    Camera.Parameters parameters = mCamera.getParameters(); 
    Size previewSize = getPreviewSize(); 
    if (previewSize != null) 
     parameters.setPreviewSize(previewSize.width, previewSize.height); 

    mCamera.setParameters(parameters); 

    // start preview with new settings 
    try { 
     previewCamera(); 

    } catch (Exception e) { 
     Log.d(TAG, "Error starting camera preview: " + e.getMessage()); 
    } 
} 

public Size getPreviewSize() { 
    return mPreviewSize; 
} 

public static Size getOptimalPreviewSize(List<Size> sizes, int width, int height) { 
    double aspectTolerance = 0.05; 
    double targetRatio = (double) width/height; 
    if (sizes == null) { 
     return null; 
    } 
    Size optimalSize = null; 
    double minDiff = Double.MAX_VALUE; 
    int targetHeight = height; 
    // Try to find an size match aspect ratio and size 
    for (Size size : sizes) { 
     double ratio = (double) size.width/size.height; 
     if (Math.abs(ratio - targetRatio) > aspectTolerance) 
      continue; 
     if (Math.abs(size.height - targetHeight) < minDiff) { 
      optimalSize = size; 
      minDiff = Math.abs(size.height - targetHeight); 
     } 
    } 
    // Cannot find the one match the aspect ratio, ignore the requirement 
    if (optimalSize == null) { 
     minDiff = Double.MAX_VALUE; 
     for (Size size : sizes) { 
      if (Math.abs(size.height - targetHeight) < minDiff) { 
       optimalSize = size; 
       minDiff = Math.abs(size.height - targetHeight); 
      } 
     } 
    } 
    return optimalSize; 

} 

public void previewCamera() { 
    try { 
     mCamera.setPreviewDisplay(mHolder); 
     mCamera.startPreview(); 
    } catch (Exception e) { 
     Log.d(TAG, "Cannot start preview.", e); 
    } 
} 

} 

Manifest.xml

<uses-sdk android:minSdkVersion="8" /> 

<uses-permission android:name="android.permission.CAMERA" /> 
<uses-permission android:name="android.permission.RECORD_AUDIO" /> 
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 

<uses-feature android:name="android.hardware.camera" /> 
<uses-feature android:name="android.hardware.camera.autofocus" /> 

<application 
    android:name=".client.andi" 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" > 
    <activity 
     android:name=".activity.CameraRecorder" 
     android:label="@string/title_activity_main" 
     android:screenOrientation="landscape" 
     android:theme="@android:style/Theme.NoTitleBar.Fullscreen" > 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
</application> 

** ** layout.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:id="@+id/RelativeLayout1" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
android:gravity="bottom" 
android:orientation="vertical" > 

<FrameLayout 
    android:id="@+id/camera_preview" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:layout_alignParentLeft="true" 
    android:layout_alignParentTop="true" > 
</FrameLayout> 

</RelativeLayout> 

Answer 1

Non sono sicuro se si verifica esattamente lo stesso problema con la mia.

Anch'io ho bloccato questo problema. Ho scoperto che è possibile utilizzare la funzione setOrientationHint (API 9). Chiamare questa funzione prima di chiamare MediaRecorder.prepare(). È possibile impostare il grado di orientamento per il video in uscita.

Spero che ti aiuti, buona fortuna!

Answer 2

Si dovrebbe modificare Android: screenOrientation = "paesaggio" in Android: screenOrientation = "ritratto"