列举几个稍微难点的属性，其他的方法属性都好理解,可以参照UIButton.h

////  ViewController.m//  UIButton////  Created by City--Online on 15/5/19.//  Copyright (c) 2015年 XQB. All rights reserved.// #import "ViewController.h" @interface ViewController ()@property(nonatomic,strong) UIButton *btn1;@end @implementation ViewController - (void)viewDidLoad {    [super viewDidLoad];          //    typedef NS_ENUM(NSInteger, UIButtonType) {//        UIButtonTypeCustom = 0,                         // no button type//        UIButtonTypeSystem NS_ENUM_AVAILABLE_IOS(7_0),  // standard system button//        //        UIButtonTypeDetailDisclosure,//        UIButtonTypeInfoLight,//        UIButtonTypeInfoDark,//        UIButtonTypeContactAdd,//        //        UIButtonTypeRoundedRect = UIButtonTypeSystem,   // Deprecated, use UIButtonTypeSystem instead//    };    _btn1=[UIButton buttonWithType:UIButtonTypeSystem];    //确定按钮高亮时是否改变阴影的Bool值.默认时NO,当为YES时,阴影在雕刻与浮雕感之间变化(差不多就是去正常offset的相反数作为新的offset)     _btn1.reversesTitleShadowWhenHighlighted=YES;         //EdgeInsets边缘填充 类似CSS盒子模型中的内边距padding    _btn1.imageEdgeInsets=UIEdgeInsetsMake(30, 10, 0, 0);    _btn1.contentEdgeInsets=UIEdgeInsetsMake(30, 40, 0, 0);    _btn1.titleEdgeInsets=UIEdgeInsetsMake(20, 20, 0, 0);    UIImage *img=[UIImage imageNamed:@"1.jpg"];    //UIButton里面包含一个UILabel和一个UIImageView    [_btn1 setImage:img forState:UIControlStateNormal];    [_btn1 setTitle:@"按钮" forState:UIControlStateNormal];         //设置控件内容水平对齐方式    _btn1.contentHorizontalAlignment=UIControlContentHorizontalAlignmentLeft;         //确定当按钮高亮时图片是否改变的BOOL值,为真时图片随按钮高亮而高亮//    _btn1.highlighted=YES;    _btn1.adjustsImageWhenHighlighted=YES;         //确定当按钮高亮时图片是否改变的BOOL值,为真时图片随按钮失效而变暗//    _btn1.enabled=NO;    _btn1.adjustsImageWhenDisabled=YES;         //控制当按钮按下时是否闪光的BOOL值.默认NO,YES时按下会有白色光点.图片和按钮事件的不会因闪光改变.    _btn1.showsTouchWhenHighlighted=YES;    _btn1.frame=CGRectMake(20, 100, 200, 200);    _btn1.backgroundColor=[UIColor redColor];    [self.view addSubview:_btn1];     } - (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.} @end