iOS滑動手勢UIPanGestureRecognizer 注意事項

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添加滑動手勢

    //添加滑塊

    UIPanGestureRecognizer *recognizerA = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePan:)];

    [recognizerA setMaximumNumberOfTouches:1];

  //滑塊大小

    _AView = [[UIView alloc] initWithFrame:CGRectMake(0,0, 100，150)];

    [_AView addGestureRecognizer:recognizerA];

 

/**

 * @brief 滑動模組

 */

#pragma mark --滑動模組

- (IBAction)handlePan:(UIPanGestureRecognizer *)recognizer {

 

    //鬆開手指時判斷滑動趨勢讓其計算滑動位子

    if (recognizer.state == UIGestureRecognizerStateEnded) {

        [self updateRelationships];

    }

}

/**

 * @brief 滑動大小

 */

#pragma mark --滑動大小

-(void)updateRelationships{

       NSLog(@"update-CGFloat_x::%f",AView.frame.origin.x);

    NSLog(@"update-CGFloat_x::%f",AView.frame.origin.y);

    

}

iOS滑動手勢UIPanGestureRecognizer 注意事項