AZ_自定义按钮

Xcode自定义按钮

---

---

//设置frame
-(instancetype)initWithFrame:(CGRect)frame
{
    if (self=[super initWithFrame: frame]) {
        self.titleLabel.textAlignment=NSTextAlignmentCenter;
        self.backgroundColor=[UIColor greenColor];

        [self setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
//        self.titleLabel.textColor=[UIColor blueColor];

    };

    return self;
}

//更新子控件布局
-(void)layoutSubviews
{
    [super layoutSubviews];
    CGFloat width=self.frame.size.width;
    CGFloat height=self.frame.size.height;

    self.imageView.frame=CGRectMake(0, 0, width, width);
    self.titleLabel.frame=CGRectMake(0, width, width, height-width);
//    self.titleLabel.textColor=[UIColor purpleColor];
}

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今天在自定义按钮的时候出现自定义按钮的文字一直显示不出来，捣鼓后发现是由于背景颜色和文字颜色同为白色造成的，在 initWithFrame: 方法中不能使用self.titleLabel.textColor=[UIColor blueColor];设置颜色,可以使用[self setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]对文字颜色进行设置;