android 2.3.6中的摄像头方向

Question

我在android 2.3.6 device.Y显示摄像头预览时遇到了问题。我已经使用这段代码改变摄像头的方向，但是对于2.3.6而言，它不工作，而对于其他版本，它正在工作正常。

在设备2.2.1

第一张图片，在设备2.3.6.I 2图像要为设备摄像头预览的相同2.2.1 2.3.6.Below是我代码

if (Integer.parseInt(Build.VERSION.SDK) >= 8) 
      { 
     mCamera.setDisplayOrientation(90); 


     } 
     else 
     { 
      if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) 
      { 

       p.set("orientation", "portrait"); 
       p.set("rotation", 90); 

      } 
      if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) 
      { 

       p.set("orientation", "landscape"); 
       p.set("rotation", 90); 

      } 
    } 

而且我已经指定了清单中的屏幕方向肖像。一定建议我一个解决方案。提前感谢。

Answer 1

请参考下面的代码：

private void setCameraDisplayOrientation(int cameraId, android.hardware.Camera camera) { 
    int rotation = getWindowManager().getDefaultDisplay() 
      .getRotation(); 
    int degrees = 0; 
    int result; 

    if(Build.VERSION.SDK_INT>10){ 
     android.hardware.Camera.CameraInfo info = 
       new android.hardware.Camera.CameraInfo(); 
     android.hardware.Camera.getCameraInfo(cameraId, info); 
     switch (rotation) { 
     case Surface.ROTATION_0: degrees = 0; break; 
     case Surface.ROTATION_90: degrees = 90; break; 
     case Surface.ROTATION_180: degrees = 180; break; 
     case Surface.ROTATION_270: degrees = 270; break; 
     } 

     if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) { 
      result = (info.orientation + degrees) % 360; 
      result = (360 - result) % 360; // compensate the mirror 
     } else { // back-facing 
      result = (info.orientation - degrees + 360) % 360; 
     } 
     camera.setDisplayOrientation(result); 

    }else{ 
     if(cameraId==CAMERA_FACING_BACK){ 
      camera.setDisplayOrientation(90); 
     }else{ 
      camera.setDisplayOrientation(270); 
     } 
    } 
} 

可以使用

@TargetApi(Build.VERSION_CODES.GINGERBREAD) 
private Camera openFrontFaceCamera() { 
    int cameraCount = 0; 
    Camera cam = null; 
    Camera.CameraInfo cameraInfo = new Camera.CameraInfo(); 
    cameraCount = Camera.getNumberOfCameras(); 
    for (int camIdx = 0; camIdx < cameraCount; camIdx++) { 
     Camera.getCameraInfo(camIdx, cameraInfo); 
     if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT ) { 
      try { 
       mCameraId=camIdx; 
       cam = Camera.open(camIdx); 
      } catch (RuntimeException e) { 
       Log.e("Custom Camera", "Camera failed to open: " + e.getLocalizedMessage()); 
      } 
     } 
    } 

    return cam; 
} 

@TargetApi(Build.VERSION_CODES.GINGERBREAD) 
private Camera openRearFaceCamera() { 
    int cameraCount = 0; 
    Camera cam = null; 
    Camera.CameraInfo cameraInfo = new Camera.CameraInfo(); 
    cameraCount = Camera.getNumberOfCameras(); 
    for (int camIdx = 0; camIdx < cameraCount; camIdx++) { 
     Camera.getCameraInfo(camIdx, cameraInfo); 
     if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_BACK ) { 
      try { 
       mCameraId=camIdx; 
       cam = Camera.open(camIdx); 
      } catch (RuntimeException e) { 
       Log.e("Custom Camera", "Camera failed to open: " + e.getLocalizedMessage()); 
      } 
     } 
    } 

    return cam; 
}