通过代码创建按钮案例

//

//  MJViewController.m

//  02-作业-通过代码创建按钮

//

//  Created by apple on 14-3-24.

//  Copyright (c) 2014年 itcast. All rights reserved.

//

#import "MJViewController.h"

@interface MJViewController ()

@end

@implementation MJViewController

- (void)viewDidLoad

{

    [superviewDidLoad];

    

    // 1.创建按钮

    UIButton *btn = [[UIButtonalloc] init];

    

    // 2.添加按钮

    [self.viewaddSubview:btn];

    

    // 3.设置frame

    btn.frame = CGRectMake(50,50, 100, 100);

    

    // 4.设置背景图片

    // 4.1.通过文件名加载图片(凡是PNG图片,都不用加拓展名)

    UIImage *normal = [UIImageimageNamed:@"btn_01"];

    // 4.2.设置普通状态下的背景图片

    [btn setBackgroundImage:normalforState:UIControlStateNormal];

    

    // 4.3.加载高亮的图片

    UIImage *high = [UIImageimageNamed:@"btn_02"];

    [btn setBackgroundImage:highforState:UIControlStateHighlighted];

    

    // 5.设置文字

    [btn setTitle:@"点我啊"forState:UIControlStateNormal];

    [btn setTitle:@"摸我干啥"forState:UIControlStateHighlighted];

    

    // 6.设置文字颜色

    [btn setTitleColor:[UIColorredColor] forState:UIControlStateNormal];

    [btn setTitleColor:[UIColorblueColor] forState:UIControlStateHighlighted];

    

    // 7.监听按钮点击

    [btn addTarget:selfaction:@selector(btnClick:)forControlEvents:UIControlEventTouchUpInside];

    

    UIButton *btn2 = [UIButtonbuttonWithType:UIButtonTypeContactAdd];

    [btn2 addTarget:selfaction:@selector(btnClick:)forControlEvents:UIControlEventTouchUpInside];

    btn2.center = CGPointMake(250, 250);

    [self.viewaddSubview:btn2];

}

- (void)btnClick:(UIButton *)button

{

    NSLog(@"btnClick----------%@", button);

}

- (void)btn2Click

{

    NSLog(@"btn2Click----------");

}

@end