UIKit 框架之UIButton

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