如何给用户选择在android中选择自定义相机

Question

如何给用户选择相机在android.if用户点击按钮，如果前脸是预览。我必须显示回相机。如果背面是预览。我必须在Android中显示前脸相机< / p>

Answer 1

这可以帮到你：

public static void setCameraDisplayOrientation(Activity activity,
     int cameraId, android.hardware.Camera camera) {

     android.hardware.Camera.CameraInfo info =
         new android.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);
 }

另请参阅以下链接：

How do I open the "front camera" on the Android platform?

http://developer.android.com/reference/android/hardware/Camera.html