ios-label上添加button不显示的解决办法

效果图 2017-06-30 下午6.22.36.png

使用两个view

{
    UILabel *aLabel;

    UIView *bView;
    UIView *cView;

    UIButton *btn;

}

bView =[[UIView alloc] initWithFrame:CGRectMake(0, 100, self.view.frame.size.width, self.view.frame.size.width)];
    [self.view addSubview:bView];
    bView.userInteractionEnabled = YES;
    bView.backgroundColor=[UIColor colorWithWhite:0.1 alpha:0.9];


    cView=[[UIView alloc] initWithFrame:CGRectMake(0, 0, 260, 260)];
    cView.userInteractionEnabled = YES;
    [bView addSubview:cView];
    cView.backgroundColor=[UIColor blueColor];


    aLabel=[[UILabel alloc] initWithFrame:CGRectMake(0, 0, 260, 260)];
    aLabel.userInteractionEnabled = YES;
    aLabel.numberOfLines = 0;
    aLabel.text = @"有文字的这里";//这里是文字。假如是数字的话就不需要cView也行。
    aLabel.font = [UIFont systemFontOfSize:12];
    [bView addSubview:aLabel];
    aLabel.backgroundColor=[UIColor clearColor];//设置成透明，相当于一个覆盖


    btn=[UIButton buttonWithType:UIButtonTypeCustom];
    btn.frame=CGRectMake(0, 0, 80, 40);
    [btn setBackgroundColor:[UIColor redColor]];
    [btn setTitle:[NSString stringWithFormat:@"不显示吗"] forState:UIControlStateNormal];
    [aLabel addSubview:btn];