iOS开发--YYLable 点击没反应的坑

项目中有一个用户协议入口,是使用YYLable显示的,有高亮和点击事件,点击事件不执行,困扰很久,最后发现是手势冲突的问题:

IMG_0150.JPG

界面内有一个textField, 为了收起键盘,在view上添加了tap手势来隐藏键盘:

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(keyboardHide:)];
[self.view addGestureRecognizer:tap];


- (void)keyboardHide:(UITapGestureRecognizer *)tap {
[self.view endEditing:true];
return;
}

YYLabel添加事件方法:

 - (YYLabel *)readinglabel {
if (!_readinglabel) {
    _readinglabel = [[YYLabel alloc] init];
    _readinglabel.numberOfLines = 2;
    NSString *concealText = LocatizedStringForKey(@"woyiyuedutongyixieyiheyinsi");
    NSRange linkTextRange1 = [concealText rangeOfString:LocatizedStringForKey(@"yonghuxieyi")];
    NSRange linkTextRange2 = [concealText rangeOfString:LocatizedStringForKey(@"yinsizhengce")];
    NSMutableAttributedString *concealAttrText = [[NSMutableAttributedString alloc]initWithString:concealText attributes:@{NSFontAttributeName : [UIFont systemFontOfSize:12],NSForegroundColorAttributeName : [UIColor colorWithRed:180/255.0 green:183/255.0 blue:199/255.0 alpha:1/1.0]}];
    
    NSMutableParagraphStyle *paragraphStyle = [NSMutableParagraphStyle new];
    paragraphStyle.minimumLineHeight = 17;
    paragraphStyle.lineSpacing = 5;
    [concealAttrText addAttributes:@{NSParagraphStyleAttributeName : paragraphStyle} range:NSMakeRange(0, concealAttrText.length)];
    
    __weak __typeof(self)weakSelf = self;
   
    [concealAttrText yy_setTextHighlightRange:linkTextRange1 color:[UIColor lj_colorWithHexString:@"3D6EFF"] backgroundColor:nil tapAction:^(UIView * _Nonnull containerView, NSAttributedString * _Nonnull text, NSRange range, CGRect rect) {
        __strong __typeof(weakSelf)strongSelf = weakSelf;
        UIViewController *vc = [LJVRSDK VRWebViewControllerWithURL:[NSString stringWithFormat:@"%@%@",[RSDAPI h5Ycy],[SharedData sharedDataSingleton].NEW_USER_AGREEMENT_HTML] ext:nil showNav:YES showBackButton:NO delegate:nil];
        [vc setHidesBottomBarWhenPushed:YES];
        [strongSelf.navigationController pushViewController:vc animated:YES];
    }];
    [concealAttrText yy_setTextHighlightRange:linkTextRange2 color:[UIColor lj_colorWithHexString:@"3D6EFF"] backgroundColor:nil tapAction:^(UIView * _Nonnull containerView, NSAttributedString * _Nonnull text, NSRange range, CGRect rect) {
        __strong __typeof(weakSelf)strongSelf = weakSelf;
        UIViewController *vc = [LJVRSDK VRWebViewControllerWithURL:[NSString stringWithFormat:@"%@%@",[RSDAPI h5Realsee],[SharedData sharedDataSingleton].NEW_PRIVACY_POLICY_HTML] ext:nil showNav:YES showBackButton:NO delegate:nil];
        [vc setHidesBottomBarWhenPushed:YES];
        [strongSelf.navigationController pushViewController:vc animated:YES];
    }];
    _readinglabel.userInteractionEnabled = YES;
    _readinglabel.attributedText = concealAttrText;
    [self.view addSubview:_readinglabel];
}
return _readinglabel;
}

这个手势和YYLabel的富文本添加事件有冲突,造成在点击YYLabel时执行了tap手势方法tap.

查看 YYLabel的hitTest方法确实返回了YYLabel,但是没有执行.
通过查看YYLabel源码发现, YYLabel是通过touchBegin: touchEnd:捉对来确认点击事件,然后根据点击范围来执行对应的action

所以冲突实质是 touchend 和tap手势的冲突

以下是测试用例:

@implementation ViewController

 - (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap)];
[self.view addGestureRecognizer:tap];


}
-(void)viewDidAppear:(BOOL)animated{
UILabel *label = [[LQLabel alloc] initWithFrame:CGRectMake(100, 100, 100, 100)];
label.backgroundColor = [UIColor grayColor];

[self.view addSubview:label];
label.userInteractionEnabled = YES;
}
-(void)tap{
NSLog(@"tap");
}
@end


@implementation LQLabel

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
// Drawing code
}
*/
 -(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
NSLog(@"touch begin");
 }
 -(void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
NSLog(@"touch end");
 }

 @end

点击view的时候 执行tap:

 2021-07-07 16:01:09.557891+0800 tapWithTouch[23171:2729459] tap

点击LQLabel的时候执行: touch begin 和 tap

 2021-07-07 16:01:33.989632+0800 tapWithTouch[23171:2729459] touch begin
 2021-07-07 16:01:34.070506+0800 tapWithTouch[23171:2729459] tap