button移动(或执行动画)之后无法响应点击事件的解决方法

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其实问题的本质原因是button在移动之后一直处于按下的状态.导致无法触发方法.我们要做的就是在移动后取消button的按下状态.以下为MyButton的.m文件.我的自定义button模仿了苹果的虚拟home键.拖拽后有自动向左或者向右(根据坐标)的效果.

@interface MyButton : UIButton{    CGPoint beginPoint;}@property(nonatomic) BOOL dragEnable;@end

以下为.m文件

#import "MyButton.h"@implementation MyButton- (id)initWithFrame:(CGRect)frame{    self = [super initWithFrame:frame];    if (self) {        self.backgroundColor = [UIColor redColor];    }    return self;}- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{    [super touchesBegan:touches withEvent:event];    if (!_dragEnable) {        return;    }    UITouch *touch = [touches anyObject];    beginPoint = [touch locationInView:self];}- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{    if (!_dragEnable) {        return;    }    UITouch *touch = [touches anyObject];    CGPoint nowPoint = [touch locationInView:self];    float offsetX = nowPoint.x - beginPoint.x;    float offsetY = nowPoint.y - beginPoint.y;    self.center = CGPointMake(self.center.x + offsetX, self.center.y +offsetY);    //CGPoint next = [touch previousLocationInView:self];}- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{    if (!_dragEnable) {        return;    }    self.center = CGPointMake(self.center.x, self.center.y);    if (self.center.x<(320-self.center.x)) {        CAKeyframeAnimation *frameAnimation = [CAKeyframeAnimation animationWithKeyPath:@"position"];        frameAnimation.duration = 1*(self.center.x)/160;        frameAnimation.values = [NSArray arrayWithObjects:[NSValue valueWithCGPoint:self.center],[NSValue valueWithCGPoint:CGPointMake(self.frame.size.width/2, self.center.y)], nil];                [self.layer addAnimation:frameAnimation forKey:@"sss"];        self.center = CGPointMake(self.frame.size.width/2, self.center.y);    }    else{        CAKeyframeAnimation *frameAnimation = [CAKeyframeAnimation animationWithKeyPath:@"position"];        frameAnimation.duration = 1*(320 - self.center.x)/160;        frameAnimation.values = [NSArray arrayWithObjects:[NSValue valueWithCGPoint:self.center],[NSValue valueWithCGPoint:CGPointMake(320 - self.frame.size.width/2, self.center.y)], nil];                [self.layer addAnimation:frameAnimation forKey:@"sss"];               self.center = CGPointMake(320 - self.frame.size.width/2, self.center.y);    }    NSLog(@"%@",NSStringFromCGRect(self.frame));    [super touchesEnded: touches withEvent: event];}

问题的关键是

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event中的 [super touchesBegan:touches withEvent:event];

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event 中的 [super touchesEnded: touches withEvent: event];

加入这两个方法后,button就可以取消按下状态了.

转载请注明本文源地址 blog.csdn.net/u013082522/article/details/183172uibutton91

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