Question

我已经制作了自定义视图类。我在视图控制器类中初始化它。我已启用用户互动，但它也无法正常工作。我在类似的问题中搜索了它，但大多数人说要启用用户互动这是我编写的代码。

@interface ProfileCreatorViewController (){

SectionTitleView *ProfileTitle;
CGRect mainFrame;

}

@end

@implementation ProfileCreatorViewController

- (void)viewDidLoad {
    [super viewDidLoad];


    mainFrame = CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y + NAVBAR_HEIGHT, self.view.frame.size.width, self.view.frame.size.height);

    CGRect profileFrame = CGRectMake(mainFrame.origin.x + 5, mainFrame.origin.y, mainFrame.size.width - 20, 50);
    ProfileTitle = [[SectionTitleView alloc]initWithFrame:profileFrame withTitle:@"Profile" withUnderLineColor:[UIColor blackColor] withDownButton:[UIImage imageNamed:@"rightArrow"]];
    [self.view addSubview:ProfileTitle];

    UITapGestureRecognizer *recog = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(downButtonClicked)];
    [ProfileTitle addGestureRecognizer:recog];
    ProfileTitle.userInteractionEnabled = YES;

}


-(void) downButtonClicked{

    NSLog(@"clicked");
}

Answer 1

你可以在这里查看几件事 profileFrame的高度和宽度都不是很小（print profileFrame）

ProfileTitle不完全透明（当视图的alpha非常接近0时，手势也不起作用）

ProfileTitle不会被任何其他视图遮挡（使用可视化调试器）

Answer 2

@interface ProfileCreatorViewController ()<UIGestureRecognizerDelegate>{

SectionTitleView *ProfileTitle;
CGRect mainFrame;

}

@end

@implementation ProfileCreatorViewController

- (void)viewDidLoad {
    [super viewDidLoad];


    mainFrame = CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y + NAVBAR_HEIGHT, self.view.frame.size.width, self.view.frame.size.height);

    CGRect profileFrame = CGRectMake(mainFrame.origin.x + 5, mainFrame.origin.y, mainFrame.size.width - 20, 0);
    ProfileTitle = [[SectionTitleView alloc]initWithFrame:profileFrame withTitle:@"Profile" withUnderLineColor:[UIColor blackColor] withDownButton:[UIImage imageNamed:@"rightArrow"]];
    [self.view addSubview:ProfileTitle];

    UITapGestureRecognizer *recog = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(downButtonClicked:)];
    recog.delegate=self;
    [ProfileTitle addGestureRecognizer:recog];
    ProfileTitle.userInteractionEnabled = YES;

}


-(void) downButtonClicked:(UITapGestureRecognizer *)sender{

    NSLog(@"clicked");
}

添加委托并更改方法签名

Answer 3

试试这些..

创建自定义视图的属性，如下所示..并将其导入到您的ProfileCreatorViewController.h文件中，如下所示..

#import "SectionTitleView.h"

@property (nonatomic , strong) SectionTitleView *previewView;

添加UIGestureRecognizerDelegate

@interface ProfileCreatorViewController ()<UIGestureRecognizerDelegate>
{
   SectionTitleView *ProfileTitle;
   CGRect mainFrame;
}

如果需要，请设置NumberOfTapsRequired

UITapGestureRecognizer *recog = 
  [[UITapGestureRecognizer alloc]initWithTarget:self 
                                         action:@selector(downButtonClicked:)];     
ProfileTitle.userInteractionEnabled = YES;
[recog setNumberOfTapsRequired:1];  //No. of taps..
[ProfileTitle addGestureRecognizer:recog];

及其方法

-(void) downButtonClicked:(UITapGestureRecognizer*)gesture
{
    NSLog(@"Taped");
}

我希望它有所帮助......

Answer 4

您需要头文件中的UIGestureRecognizerDelegate。同时创建property以保留UITapGestureRecognizer内部：

@property (strong, nonatomic) UITapGestureRecognizer tapGesture;

您也不应该在父类中创建UITapGestureRecognizer。 ProfileTitle 应该自行生成。因此，您最好在 SectionTitleView 中的viewDidLoad内插入代码。

仅供参考：并且不要使用大写变量名称

UITapGestureRecognizer无法处理自定义UIView类

4 个答案: