即使我强加为真，布尔值也总是假的

Question

我有一个 UIView，在我使用 UILongPressGestureRecognizer 之前，我使用 UIPanGestureRecognizer。对于 UIPanGestureRecognizer，我收到一条关于 UILongPressGestureRecognizer 压力的消息，但我的应用程序不采用布尔值，即使我强加为真，这也总是假的。我该怎么办？

 -(IBAction)longGesture:(UILongPressGestureRecognizer *)gestureRecognizer{


   if(fromRiga ==0){
    if ([gestureRecognizer state]==UIGestureRecognizerStateBegan){
        self.inLongPress = YES;
        self.view.backgroundColor =[UIColor darkGrayColor];
        gestureRecognizer.allowableMovement=200;

      }else if([gestureRecognizer state]==UIGestureRecognizerStateEnded){
        self.inLongPress = NO;
      }
}

 - (IBAction)panGesture:(UIPanGestureRecognizer *)gestureRecognizer
  {
    NSLog(@"inLongPress is %@", self.inLongPress ? @"YES": @"NO");
  }

提前致谢

Answer 1

当您触摸视图并检查从那一刻起的移动时，平移识别器会立即触发。长按识别器触发总是晚于平移识别器（在 long 周期结束之后）。我怀疑panGesture 总是在longGesture 之前调用。也许平移识别器正在完全取消长按识别器。

您应该通过添加更多 NSLog 语句来检查发生了什么。

-(IBAction)longGesture:(UILongPressGestureRecognizer *)gestureRecognizer {
    NSLog(@"Long gesture");

    if (fromRiga == 0){
        if ([gestureRecognizer state] == UIGestureRecognizerStateBegan){
            self.inLongPress = YES;
            self.view.backgroundColor =[UIColor darkGrayColor];
            gestureRecognizer.allowableMovement=200;

            NSLog(@"Long gesture began, self.iLongPress = %@", self.iLongPress ? @"YES" : @"NO");
        } else if([gestureRecognizer state] == UIGestureRecognizerStateEnded) {
            self.inLongPress = NO;
            NSLog(@"Long gesture ended, self.iLongPress = %@", self.iLongPress ? @"YES" : @"NO");
        }
    }
}

- (IBAction)panGesture:(UIPanGestureRecognizer *)gestureRecognizer {
    NSLog(@"Pan gesture, self.iLongPress = %@", self.iLongPress ? @"YES" : @"NO");
}