无法在 UIbutton 中添加点击事件 [英] cant able to add click event in UIbutton

问题描述

我正在创建包含两个标签和一个按钮的自定义视图.我无法点击按钮.我也发送了下面的代码.

I am creating custom view which include two labels and One button. I cant get the button click. I am also sending the code which is below.

.h 文件

#import <UIKit/UIKit.h>


@interface customDeleteButton : UITableViewCell {

    IBOutlet UILabel *lbl;
    IBOutlet UILabel *lbl1;
 }
 @property(nonatomic,retain)IBOutlet UILabel *lbl;
 @property(nonatomic,retain)IBOutlet UILabel *lbl1;
 -(IBAction)btnClick:(id)sender;
 @end

.m 文件

#import "customDeleteButton.h"


@implementation customDeleteButton
@synthesize lbl,lbl1;
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {

self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
    // Initialization code.
    lbl = [[UILabel alloc] initWithFrame:CGRectMake(50, 10, 200, 20)];
    lbl1 = [[UILabel alloc] initWithFrame:CGRectMake(260, 10, 200, 20)];
    [self addSubview:lbl];
    [self addSubview:lbl1];

}
return self;
}

- (void)willTransitionToState:(UITableViewCellStateMask)state{

[super willTransitionToState:state];


if ((state & UITableViewCellStateShowingDeleteConfirmationMask) == UITableViewCellStateShowingDeleteConfirmationMask) {


for (UIView *subview in self.subviews) {

    if ([NSStringFromClass([subview class]) isEqualToString:@"UITableViewCellDeleteConfirmationControl"]) {             

        UIButton *btn;


        btn=[[UIButton alloc]initWithFrame:CGRectMake(0, 0, 64, 33)];
        [btn addTarget:subview action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];
        [btn setImage:[UIImage imageNamed:@"delete.png"] forState:UIControlStateNormal];
        btn.userInteractionEnabled=YES;
        btn.frame=CGRectMake(0,0,64,33);
        //UIImageView *deleteBtn = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 64, 33)];
        //[deleteBtn setImage:[UIImage imageNamed:@"delete.png"]];
        [[subview.subviews objectAtIndex:0] addSubview:btn];
        //[deleteBtn release];

    }       

}
  } 

}
 -(void)btnClick:(id)sender
{
    NSLog(@"HTllo");
}


- (void)setSelected:(BOOL)selected animated:(BOOL)animated {

     [super setSelected:selected animated:animated];

// Configure the view for the selected state.
 }


- (void)dealloc {
    [super dealloc];
}

推荐答案

创建时需要将目标设置为主视图而不是子视图:

You need to set the target to your main view not the subviews, when you create it:

[btn addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];

还有 - 您是否意识到自己在代码中做了什么?

And also - do you realize what you're doing in your code?

在函数 willTransitionToState 中，您将 UIButton 添加到按钮本身的子视图中?这真的是你想做的吗?函数 willTransitionToState 甚至被调用了吗?

In a function willTransitionToState you are adding UIButtons to subviews of the button itself? Is this really what you want to do? Is the function willTransitionToState even called?

这篇关于无法在 UIbutton 中添加点击事件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！