Swift和OC版—button图文混排

swift:

使用

//上文下图
let btnTop = UIButton(frame: CGRect(x: 0, y: 100, width: 170, height: 70))
btnTop.titleLabel?.font = UIFont.systemFont(ofSize: 20)
btnTop.setTitleColor(UIColor.black, for: .normal)
btnTop.backgroundColor = UIColor.cyan
btnTop.set(image: UIImage(named: "btnAlphaControl"), title: "标题在上方", titlePosition: .top, space: 10, state: .normal)
view.addSubview(btnTop)

// 上图下文
btnBottom.lableToImage(titlePosition: .bottom, space: 10)
//左图右文
btnBottom.lableToImage(titlePosition: .right, space: 10)
//左文右图
btnBottom.lableToImage(titlePosition: .left, space: 10)

实现：

//已有文字和图片,直接调整位置
@objc func lableToImage(titlePosition: UIView.ContentMode, space: CGFloat){
    
    let imageSize = self.imageRect(forContentRect: self.frame)
    let titleFont = self.titleLabel?.font!
    let titleSize = self.titleLabel?.text?.size(withAttributes: [kCTFontAttributeName as NSAttributedString.Key: titleFont!]) ?? CGSize.zero
    
    var titleInsets: UIEdgeInsets
    var imageInsets: UIEdgeInsets
    
    switch titlePosition {
    case .top:
        //标题在上
        titleInsets = UIEdgeInsets(top: -(imageSize.height+titleSize.height+space)/2, left: -imageSize.width, bottom: 0, right: 0)
        imageInsets = UIEdgeInsets(top: (imageSize.height + titleSize.height + space)/2, left: 0, bottom: 0, right: -titleSize.width)
        
    case .left:
        //标题在左
        titleInsets = UIEdgeInsets(top: 0, left: -(imageSize.width*2), bottom: 0, right: 0)
        imageInsets = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: -(titleSize.width*2+space))
        
    case .bottom:
        //标题在下
        titleInsets = UIEdgeInsets(top: (imageSize.height+titleSize.height+space)/2, left: -imageSize.width, bottom: 0, right: 0)
        imageInsets = UIEdgeInsets(top: -(imageSize.height + titleSize.height + space)/2, left: 0, bottom: 0, right: -titleSize.width)
        
    case .right:
        //标题在右
        titleInsets = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: -space)
        imageInsets = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
        
    default:
        
        titleInsets = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
        imageInsets = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
        break
    }
    
    self.titleEdgeInsets = titleInsets
    self.imageEdgeInsets = imageInsets
}

OC:

使用：

//上文下图
UIButton *btnTop = [[UIButton alloc] initWithFrame:CGRectMake(50, 100, 70, 70)];
[btnTop setTitle:@"上边" forState:UIControlStateNormal];
[btnTop setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[btnTop setImage:[UIImage imageNamed:@"btnAlphaControl"] forState:UIControlStateNormal];
btnTop.titleLabel.font = [UIFont systemFontOfSize:20];
[btnTop titlePosition:UIViewContentModeTop space:10];
[btnTop setBackgroundColor:[UIColor cyanColor]];
[self.view addSubview:btnTop];

// 上图下文
[btnTop titlePosition:UIViewContentModeBottom space:10];
//左图右文
[btnTop titlePosition:UIViewContentModeRight space:10];
//左文右图
[btnTop titlePosition:UIViewContentModeLeft space:10];

实现：

- (void)titlePosition:(UIViewContentMode)position space:(CGFloat)space{

CGRect imageSize = [self imageRectForContentRect:self.frame];
CGSize labelSize = [self.titleLabel.text sizeWithAttributes:@{NSFontAttributeName:self.titleLabel.font}];

//图片宽高
CGFloat imageWith =imageSize.size.width;
CGFloat imageHeight = imageSize.size.height;
//标题宽高
CGFloat labelWidth = labelSize.width;
CGFloat labelHeight = labelSize.height;

//imageEdgeInsets和labelEdgeInsets
UIEdgeInsets imageEdgeInsets = UIEdgeInsetsZero;
UIEdgeInsets labelEdgeInsets = UIEdgeInsetsZero;

//方便理解的一句话:left以右为正方向,right以左为正方向,top向下为正,bottom向上为正
switch (position) {
    case UIViewContentModeTop:{
        //标题在上
        imageEdgeInsets = UIEdgeInsetsMake(0, 0, -(labelHeight+space), -labelWidth);
        labelEdgeInsets = UIEdgeInsetsMake(-(imageHeight+space), -imageWith, 0, 0);
        break;
    }
    case UIViewContentModeLeft:{
        //标题在左
        imageEdgeInsets = UIEdgeInsetsMake(0, (labelWidth+space/2), 0, -(labelWidth+space/2));
        labelEdgeInsets = UIEdgeInsetsMake(0, -(imageWith+space/2), 0, (imageWith+space/2));
        break;
    }
    case UIViewContentModeBottom:{
        //标题在下
        imageEdgeInsets = UIEdgeInsetsMake(-(labelHeight+space), 0, 0, -labelWidth);
        labelEdgeInsets = UIEdgeInsetsMake(0, -imageWith, -(imageHeight+space), 0);
        break;
    }
    case UIViewContentModeRight:{
        //标题在右
        imageEdgeInsets = UIEdgeInsetsMake(0, -space/2, 0, space/2);
        labelEdgeInsets = UIEdgeInsetsMake(0, space/2, 0, -space/2);
        break;
    }
    default:
        break;
}

self.titleEdgeInsets = labelEdgeInsets;
self.imageEdgeInsets = imageEdgeInsets;
}