Question

我创建了一个自定义的UIView并在其中添加了一个UITapGestureRecognizer，如下所示：

@interface CustomizedView : UIView

@property(nonatomic,strong) UILabel* label;

@end

@implementation CustomizedView
-(void) targetActionForThisView:(id)sender{
    NSLog(@"Clicked!");
}
-(void) commonInit{
    _label = [[UILabel alloc] initWithFrame:CGRectMake(0,0,200,100)];
    _label.text = @"test string 1234";
    UITapGestureRecognizer* g = [[UITapGestureRecognizer alloc] 
       initWithTarget:self action:@selector(targetActionForThisView:)];
    g.enabled = YES;
    [self setExclusiveTouch:YES];
    [self setUserInteractionEnabled:YES];
    [self setMultipleTouchEnabled:YES];
    [_label addGestureRecognizer:g];
    [self addSubview:_label];
}
-(instancetype)init{
    self = [super init];
    [self commonInit];
    return self;
}
-(instancetype)initWithFrame:(CGRect)frame{
    self = [super initWithFrame:frame];
    [self commonInit];
    return self;
}
@end

然后我将它添加到视图控制器中：

-(void)viewDidLoad {
    [super viewDidLoad];
    CustomizedView* aView = [[CustomizedView alloc] initWithFrame:CGRectMake(0,0,300,300)];
    [self.view addSubview:aView];
}

但这种姿态不会起作用。我知道通常将目标设置为视图的控制器。但为什么这不起作用？我该如何解决？

Answer 1

将您的代码更改为此

-(void)actionViewTap:(id)sender{
    NSLog(@"Clicked!");
}
-(void) commonInit{
    _label = [[UILabel alloc] initWithFrame:CGRectMake(0,0,200,100)];
    _label.text = @"test string 1234";
    _label.userInteractionEnabled = true;//Enable userInteractionEnabled
    UITapGestureRecognizer* g = [[UITapGestureRecognizer alloc]
                             initWithTarget:self action:@selector(actionViewTap:)];//Here should be actionViewTap:
    g.enabled = YES; 
    [self setExclusiveTouch:YES];
    [self setUserInteractionEnabled:YES];
    [self setMultipleTouchEnabled:YES];
    [_label addGestureRecognizer:g];
    [self addSubview:_label];
}
-(instancetype)init{
    self = [super init];
    [self commonInit];
    return self;
}
-(instancetype)initWithFrame:(CGRect)frame{
    self = [super initWithFrame:frame];
    [self commonInit];
    return self;
 }

Answer 2

您需要在所需的视图上添加UITapGestureRecognizer对象，这是标签对象。

[_l addGestureRecognizer:g];

应该成为：

[_label addGestureRecognizer:g];

如何在UIView中添加UITapGestureRecognizer，目标设置为```self```

2 个答案: