实现button的Image在titleLabel的上面

![这里写代码片](http://img.blog.csdn.net/20160616112611617)//用UIButton来实现上图中样式下面是自定义的Button：#import <UIKit/UIKit.h>@interface cusButton : UIButton@end#import "cusButton.h"@interface cusButton(){    CGRect boundingRect;}@end@implementation cusButton// Only override drawRect: if you perform custom drawing.// An empty implementation adversely affects performance during animation.- (void)drawRect:(CGRect)rect {    // Drawing code    self.titleLabel.textAlignment = NSTextAlignmentCenter;    [self.titleLabel setFont:[UIFont boldSystemFontOfSize:13.0]];    if (self.tag == 0) {        [self setTitle:@"首页" forState:UIControlStateNormal];        [self setImage:[UIImage imageNamed:@"tabbar0"] forState:UIControlStateNormal];    }else if (self.tag == 1){        [self setTitle:@"工作流" forState:UIControlStateNormal];        [self setImage:[UIImage imageNamed:@"tabbar1"] forState:UIControlStateNormal];    }      boundingRect=[self.titleLabel.text boundingRectWithSize:CGSizeMake(320,13.0) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:13.0]} context:nil];}//自定义的初始化方法- (instancetype)initWithFrame:(CGRect)frame{    self = [super initWithFrame:frame];    if (self)    {    }    return self;}//1.重写方法,改变 图片的位置  在  titleRect..方法后执行- (CGRect)imageRectForContentRect:(CGRect)contentRect{    CGFloat width=24;    CGFloat height=24;    CGFloat imageX=(self.frame.size.width-width)/2;    return CGRectMake(imageX, 5, width, height);}//2.改变title文字的位置,构造title的矩形即可- (CGRect)titleRectForContentRect:(CGRect)contentRect{    CGFloat width=80;    CGFloat height=25;    CGFloat imageX=(self.frame.size.width-width)/2;    CGFloat imageY=contentRect.origin.y+boundingRect.size.height+10;    return CGRectMake(imageX, imageY, width, height);}使用：  cusButton *btn = [[cusButton alloc]initWithFrame:CGRectMake(x, 0,with,myview.frame.size.height)];