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在ViewDidLoad 里添加UIButton的点击事件,不能触发。

UIButton *btn2 = [[UIButton alloc] initWithFrame:CGRectMake(0, 38, 100, 38)];
[btn2 setTitle:@"添加好友" forState:UIControlStateNormal]; btn2.titleLabel.font = [UIFont systemFontOfSize:16];
[btn2 addTarget:self action:@selector(btn2Click:) forControlEvents:UIControlEventTouchDown];

之前可以触发, 现在不知是何原因不能触发了?

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a123456678 2016-07-28 11:29:38 1966 分享 版权
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  • UIButton *btn2 = [[UIButton alloc] initWithFrame:CGRectMake(0, 38, 100, 38)];
    [btn2 setTitle:@"添加好友" forState:UIControlStateNormal]; btn2.titleLabel.font = [UIFont systemFontOfSize:16];
    [btn2 addTarget:self action:@selector(btn2Click:) forControlEvents:UIControlEventTouchUpInside];
    
    2019-07-17 20:01:15
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