学步园

在代码中可直接调用该方法。

参数：activity 为当前上下文； cameraId 为摄像头的ID，及前置摄像头或后置摄像头的ID

import android.hardware.Camera;

Camera camera;// 声明Camera类的对象camera

private void mySetDisplayOrientation(Activity activity, int cameraId) { // 调整摄像头方向
		Camera.CameraInfo info = new Camera.CameraInfo();
		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);
	}