Android 2.3.3具有方向設置的相機應用程序

Question

我試過了相機的代碼，它工作正常，但是，我面臨一些問題;

1. orientation;肖像風景它永遠不會改變，預覽仍然是肖像。 2使用自定義名稱保存圖像。 我該怎麼做？我對android非常陌生。所以代碼會更好。 在此先感謝

preview.java

class Preview extends SurfaceView implements SurfaceHolder.Callback { 
private static final String TAG = "Preview"; 

SurfaceHolder mHolder; 
public Camera camera; 

Preview(Context context) { 
    super(context); 

    // Install a SurfaceHolder.Callback so we get notified when the 
    // underlying surface is created and destroyed. 
    mHolder = getHolder(); 
    mHolder.addCallback(this); 
    mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 
} 

public void surfaceCreated(SurfaceHolder holder) { 
    // The Surface has been created, acquire the camera and tell it where 
    // to draw. 
    camera = Camera.open(); 
    try { 
     camera.setPreviewDisplay(holder); 

     camera.setPreviewCallback(new PreviewCallback() { 

      public void onPreviewFrame(byte[] data, Camera arg1) { 
       FileOutputStream outStream = null; 
       try { 
        outStream = new FileOutputStream(String.format(
          "/sdcard/%d.jpg", System.currentTimeMillis())); 
        outStream.write(data); 
        outStream.close(); 
        Log.d(TAG, "onPreviewFrame - wrote bytes: " 
          + data.length); 
       } catch (FileNotFoundException e) { 
        e.printStackTrace(); 
       } catch (IOException e) { 
        e.printStackTrace(); 
       } finally { 
       } 
       Preview.this.invalidate(); 
      } 
     }); 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } 
} 

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. 
    camera.stopPreview(); 
    camera = null; 
} 

public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { 
    // Now that the size is known, set up the camera parameters and begin 
    // the preview. 
    Camera.Parameters parameters = camera.getParameters(); 
    parameters.setPreviewSize(w, h); 
    camera.setParameters(parameters); 
    camera.startPreview(); 
} 

@Override 
public void draw(Canvas canvas) { 
    super.draw(canvas); 
    Paint p = new Paint(Color.RED); 
    Log.d(TAG, "draw"); 
    canvas.drawText("PREVIEW", canvas.getWidth()/2, 
      canvas.getHeight()/2, p); 
} 
} 

和camerademo.java

public class CameraDemo extends Activity { 
private static final String TAG = "CameraDemo"; 
Camera camera; 
Preview preview; 
Button buttonClick; 

/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 

    preview = new Preview(this); 
    ((FrameLayout) findViewById(R.id.preview)).addView(preview); 

    buttonClick = (Button) findViewById(R.id.buttonClick); 
    buttonClick.setOnClickListener(new OnClickListener() { 
     public void onClick(View v) { 
      preview.camera.takePicture(shutterCallback, rawCallback, 
        jpegCallback); 
     } 
    }); 

    Log.d(TAG, "onCreate'd"); 
} 

ShutterCallback shutterCallback = new ShutterCallback() { 
    public void onShutter() { 
     Log.d(TAG, "onShutter'd"); 
    } 
}; 

/** Handles data for raw picture */ 
PictureCallback rawCallback = new PictureCallback() { 
    public void onPictureTaken(byte[] data, Camera camera) { 
     Log.d(TAG, "onPictureTaken - raw"); 
    } 
}; 

/** Handles data for jpeg picture */ 
PictureCallback jpegCallback = new PictureCallback() { 
    public void onPictureTaken(byte[] data, Camera camera) { 
     FileOutputStream outStream = null; 
     try { 
      // write to local sandbox file system 
      // outStream = 
      // CameraDemo.this.openFileOutput(String.format("%d.jpg", 
      // System.currentTimeMillis()), 0); 
      // Or write to sdcard 
      outStream = new FileOutputStream(String.format(
        "/sdcard/%d.jpg", System.currentTimeMillis())); 
      outStream.write(data); 
      outStream.close(); 
      Log.d(TAG, "onPictureTaken - wrote bytes: " + data.length); 
     } catch (FileNotFoundException e) { 
      e.printStackTrace(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } finally { 
     } 
     Log.d(TAG, "onPictureTaken - jpeg"); 
    } 
}; 

} 

Answer 1

看到這個答案我給了一個類似的問題上從縱向改爲橫向here