objective-c - UIButton 上的两行文本各有不同的字体

Question

我找到了一种在 UIButton 上添加两行文本的方法， 但我想要的是每一行文本 有不同的字体(例如一个是粗体，另一个不是)。 这怎么可能？

谢谢。

Answer 1

您应该将 2 个 UILabel 作为 subview 添加到 UIButton。

你可以这样做:

UIButton *testButton = [UIButton buttonWithType:UIButtonTypeCustom];
testButton.frame = CGRectMake(0, 0, 200, 40);
[self.view addSubview:testButton];

UILabel *firstLineTestButton = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 200, 20)];
firstLineTestButton.text = @"First line";
firstLineTestButton.font = [UIFont systemFontOfSize:12];
[testButton addSubview:firstLineTestButton];

UILabel *secondLineTestButton = [[UILabel alloc] initWithFrame:CGRectMake(0, 20, 200, 20)];
secondLineTestButton.text = @"Second line";
secondLineTestButton.font = [UIFont boldSystemFontOfSize:12];
[testButton addSubview:secondLineTestButton];

---

---

为了使 UILabel 也能突出显示，您需要自定义按钮的突出显示。

因此将操作添加到按钮，然后检查标签的按钮 subview 并更改它们的颜色。

[testButton addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
[testButton addTarget:self action:@selector(changeColor:) forControlEvents:UIControlEventTouchDown];
[testButton addTarget:self action:@selector(touchCancel:) forControlEvents:UIControlEventTouchDragExit];

-(void)buttonAction:(UIButton*)sender
{
    [self touchCancel:sender];
    /* DO SOME MORE ACTIONS */
}

-(void)changeColor:(UIButton*)sender
{
    sender.backgroundColor = [UIColor grayColor];

    for( UIView *subview in sender.subviews ){
        if( [subview isKindOfClass:[UILabel class]] ){
            UILabel *subViewLabel = (UILabel*)subview;
            subViewLabel.textColor = [UIColor blueColor];
        }
    }
}

-(void)touchCancel:(UIButton*)sender
{
    sender.backgroundColor = [UIColor clearColor];

    for( UIView *subview in sender.subviews ){
        if( [subview isKindOfClass:[UILabel class]] ){
            UILabel *subViewLabel = (UILabel*)subview;
            subViewLabel.textColor = [UIColor blackColor];
        }
    }
}