Question

我在self.view中创建了一个menuView，menuView有两个子视图，它们是UIView。这个UIView包含4个UIButton，但是我无法点击任何一个。 userInteractionEnabled在视图调试中设置YES，按钮的框架设置正确。代码：

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ViewController.m：

- (void)viewDidLoad {
    [super viewDidLoad];
    LeftMenuView *leftView=[LeftMenuView createLeftMenuView];
    leftView.userInteractionEnabled=YES;
    self.leftView=leftView;
    [self.view addSubview:leftView];
    //nightButton
    UIButton *nightButton=[self.leftView viewWithTag:6];
    [nightButton addTarget:self action:@selector(touchButton:) forControlEvents:UIControlEventTouchUpInside];
    leftView.userInteractionEnabled=YES;
    //set
    UIButton *settingButton=[self.leftView viewWithTag:4];
    [settingButton addTarget:self.leftView action:@selector(push) forControlEvents:UIControlEventTouchUpInside];
    }

** LeftMenuView.m：**这是一个UIView类。这是我设置按钮和菜单的地方。

-(instancetype)initWithFrame:(CGRect)frame
{
    self=[super initWithFrame:frame];
    self.backgroundColor=[UIColor colorWithRed:26/256.f green:31/256.f blue:36/256.f alpha:0.7];
    [self addHeaderView];
    [self addButton];
    return self;
}
#pragma mark -add view to menu view
-(void)addHeaderView
{
    UIView *headViewUp=[[UIView alloc]init];
    headViewUp.userInteractionEnabled=YES;
    headViewUp.frame=CGRectMake(0, 0, yScreenWidth/2, 114);
    headViewUp.backgroundColor=ColorWithRGB(26, 31, 36);
    headViewUp.backgroundColor=[UIColor redColor];
    self.headViewUp=headViewUp;
    [self addSubview:headViewUp];
    UIView *headViewDown=[[UIView alloc]init];
    headViewDown.userInteractionEnabled=YES;
    headViewDown.frame=CGRectMake(0, yScreenHeight-50, yScreenWidth/2, 50);
    headViewDown.backgroundColor=ColorWithRGB(26, 31, 36);
    self.headViewDown=headViewDown;
    [self addSubview:headViewDown];
}
-(void)addButton
{
    UIButton *settingButton=[self setFrame:CGRectMake(yScreenWidth*2/6, 64, yScreenWidth/6, 50 ) title:@"设置" image:@"Menu_Icon_Setting"];
    settingButton.userInteractionEnabled=YES;
    settingButton.tag=4;
    [self resizeTextAndImageInButton:settingButton];
    [self.headViewUp addSubview:settingButton];
    UIButton *nightButton=[self setFrame:CGRectMake(yScreenWidth/4, 0, yScreenWidth/4, 50 ) title:@"白天" image:@"Menu_Day"];
    nightButton.tag=6;
    [self.headViewDown addSubview:nightButton];
}
-(UIButton *)setFrame:(CGRect)frame title:(NSString *)title image:(NSString *)imageName
{
    UIButton *button=[[UIButton alloc]initWithFrame:frame];
    [button setTitle:title forState:UIControlStateNormal];
    [button setImage:[UIImage imageNamed:imageName] forState:UIControlStateNormal];
    button.titleLabel.font=[UIFont systemFontOfSize:8];
    button.contentHorizontalAlignment=UIControlContentHorizontalAlignmentCenter;
    return button;
}
-(void)resizeTextAndImageInButton:(UIButton *)button
{
    [button setTitleEdgeInsets:UIEdgeInsetsMake(button.imageView.frame.size.height ,-button.imageView.frame.size.width, 0.0,0.0)];
    [button setImageEdgeInsets:UIEdgeInsetsMake(-10, 0.0,0.0, -button.titleLabel.bounds.size.width)];
}

clilk按钮的方法不起作用。

Answer 1

我查看了你的代码。你犯了一个错误，你没有设置“LefMenuView”的框架。即使你没有这样做，它的子视图是可见的，但不可触摸或可点击。

试试这个。我通过添加下面的代码运行。现在我能够看到点击操作。

Rule of thumb : if super view frame is Zero then all subviews are visible but not touchable.(Because you are touching out side of bounds).

ViewController.m

LeftMenuView *leftView=[LeftMenuView createLeftMenuView];
leftView.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
leftView.userInteractionEnabled=YES;

Answer 2

在您的代码中设置目标时，您遇到了错误。请这样做

[settingButton addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];

设置settingButton.userInteractionEnabled=YES;

现在处理点击事件，如下所示

-(void)buttonPressed:(id) sender
{

   UIButton *btn=(UIButton*) sender;


}

Answer 3

您需要使用相应的方法

为按钮添加目标

[button addTarget:self 
           action:@selector(aButtonMethod:)
 forControlEvents:UIControlEventTouchUpInside];

此代码需要以下

-(void)addButton
{
    UIButton *settingButton=[self setFrame:CGRectMake(yScreenWidth*2/6, 64, yScreenWidth/6, 50 ) title:@"设置" image:@"Menu_Icon_Setting"];
    settingButton.userInteractionEnabled=YES;
    settingButton.tag=4;
    [self resizeTextAndImageInButton:settingButton];
    [self.headViewUp addSubview:settingButton];
    UIButton *nightButton=[self setFrame:CGRectMake(yScreenWidth/4, 0, yScreenWidth/4, 50 ) title:@"白天" image:@"Menu_Day"];
    nightButton.tag=6;
    **[nightButton addTarget:self 
               action:@selector(aButtonMethod:)
     forControlEvents:UIControlEventTouchUpInside];**
    [self.headViewDown addSubview:nightButton];
}

或

   - (void)viewDidLoad {
        [super viewDidLoad];
        LeftMenuView *leftView=[LeftMenuView createLeftMenuView];
        leftView.userInteractionEnabled=YES;
        self.leftView=leftView;
        [self.view addSubview:leftView];
        //nightButton
        UIButton *nightButton=[self.leftView viewWithTag:6];
        [nightButton addTarget:self action:@selector(touchButton:) forControlEvents:UIControlEventTouchUpInside];
        leftView.userInteractionEnabled=YES;
[nightButton addtoSubView:self.view]
        //set
        UIButton *settingButton=[self.leftView viewWithTag:4];
        [settingButton addTarget:self.leftView action:@selector(push) forControlEvents:UIControlEventTouchUpInside];
[settingButton addtoSubView:self.view]
        }

你基本上创建了两次相同的按钮，但只有一组添加一个目标而另一组你没有将它们添加到视图中

无法点击UIView中的按钮

3 个答案: