安卓之 （解决方法）处理摄像头翻转问题

//对摄像头进行矫正，使视图正常

public static void setCameraDisplayOrientation(Activityactivity,

int cameraId, android.hardware.Cameracamera) {

android.hardware.Camera.CameraInfoinfo=

newandroid.hardware.Camera.CameraInfo();

android.hardware.Camera.getCameraInfo(cameraId,info);

int rotation=activity.getWindowManager().getDefaultDisplay()

.getRotation();

int degrees= 0;

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;

}

int result;

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);//显示翻转result度

}

在使用时，只需要传入