//這里是初始化長按手勢longPRessGestureRecognizer = [[UILongPressGestureRecognizer alloc]                                                                 initWithTarget:self                                                                 action:@selector(handleLongPressGestures:)];    //打開交互    lalala.userInteractionEnabled = YES;    //設置手指數量    longPressGestureRecognizer.numberOfTouchesRequired = 1;    /*最大100像素的運動是手勢識別所允許的*/    longPressGestureRecognizer.allowableMovement = 100.0f;    /*這個參數表示,兩次點擊之間間隔的時間長度。*/    longPressGestureRecognizer.minimumPressDuration = 1.0;        [lalala addGestureRecognizer:longPressGestureRecognizer];#pragma mark -- 長按事件  一鍵呼叫按鈕- (void)handleLongPressGestures:(UILongPressGestureRecognizer *)paramSender{    //長按開始    if (longPressGestureRecognizer.state == UIGestureRecognizerStateBegan) {        if ([paramSender isEqual:longPressGestureRecognizer]){            NSLog(@"receive long press");            [mvc call];        }    }    // 長按結束    else if (longPressGestureRecognizer.state == UIGestureRecognizerStateEnded){            }}