Question

我正在为iPad开发iOS6应用程序。我编写了一个UITextField的子类，使用户可以在视图周围拖动，捏合和旋转字段。问题是，如果您在没有旋转的情况下捏住字段，则在完成手势后，它将进入编辑模式。这不应该发生，我添加了一些禁用它的行，但它不会停止。我在这里是我的代码：

- (BOOL) canBecomeFirstResponder{
if (gesturing==YES) {
       return NO;
}else  return YES;
}


 - (void) tapDetected:(UITapGestureRecognizer*) pinchRecognizer {

if (gesturing==NO) {
    [self becomeFirstResponder];
}
}


- (void) pinchDetected:(UIPinchGestureRecognizer*) pinchRecognizer {

CGFloat scale = pinchRecognizer.scale;
self.font = [self.font fontWithSize:self.font.pointSize*(scale)];


//self.transform = CGAffineTransformScale(self.transform, scale, scale);

[self sizeToFit];


pinchRecognizer.scale = 1.0;

if (pinchRecognizer.state == UIGestureRecognizerStateChanged) {
    gesturing =YES;   

}

if (pinchRecognizer.state == UIGestureRecognizerStateBegan) {
    gesturing =YES;

}

if (pinchRecognizer.state == UIGestureRecognizerStateEnded) {
    gesturing =NO;

}


 }


- (void) panDetected:(UIPanGestureRecognizer *)panRecognizer {

CGPoint translation = [panRecognizer translationInView:self.superview];
CGPoint imageViewPosition = self.center;
imageViewPosition.x += translation.x;
imageViewPosition.y += translation.y;

self.center = imageViewPosition;
[panRecognizer setTranslation:CGPointZero inView: self.superview];



if (panRecognizer.state == UIGestureRecognizerStateChanged) {
    gesturing=YES;       

}

if (panRecognizer.state == UIGestureRecognizerStateEnded) {
    gesturing=NO;



}


  }


 - (void) rotationDetected:(UIRotationGestureRecognizer *)rotationRecognizer{  


CGFloat angle = rotationRecognizer.rotation;
self.transform = CGAffineTransformRotate(self.transform, angle);
rotationRecognizer.rotation = 0.0;

if (rotationRecognizer.state == UIGestureRecognizerStateChanged) {

    gesturing = YES;
}

if (rotationRecognizer.state == UIGestureRecognizerStateEnded) {

    gesturing = NO;
}

 }


- (BOOL) gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
return YES;
     }

Answer 1

如果您未将gesturing初始化为NO，则YES的默认值为pinch。在您尝试应用pinch时，已经调试并找出首先检测到的手势识别器？

您支持同时手势识别，因此当您申请pan时，您的手指触摸可能会被检测为if(gesturing == NO)。如果是这种情况，则tapDetected:方法中的{{1}}条件会得到满足，并且您的textField成为第一响应者。

可拖动的UITextField在不应该进行编辑时进行编辑

1 个答案: