UIImagePickerController作为subView添加并获得内存错误

Question

UIImagePickerController在视图上添加为subView并打开相机2-3次应用程序崩溃。 “快照未渲染的视图会导致空白快照。确保您的视图在屏幕更新后的快照或快照之前至少渲染一次。” “收到内存警告”

UIImagePickerController * imagePickerController = [UIImagePickerController new];
            imagePickerController.view.tag=view.tag;
            imagePickerController.delegate = self;
            if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
                imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;

                [imagePickerController.view setFrame:CGRectMake(0, 0, SCREEN_WIDTH, KCameraViewHeight)];

                [self.view addSubview:imagePickerController.view];"

-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{

    [picker.view removeFromSuperview];
    [picker removeFromParentViewController];



}