iOS系列UI篇——UIButton

来源：互联网发布：c语言为什么要指针编辑：程序博客网时间：2024/05/01 20:20

不说废话，直接上代码，温故而知新，确实受益良多！其中的奥妙，自己体会！

#import "ViewController.h"#define screen_width [UIScreen mainScreen].bounds.size.width#define screen_height [UIScreen mainScreen].bounds.size.height@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.    [self createButton];}- (void)createButton{    float bw = 50;    float bh = 50;    //设置button的类型    /*     UIButtonTypeCustom 自定     UIButtonTypeSystem NS_ENUM_AVAILABLE_IOS(7_0) iOS7默认     UIButtonTypeDetailDisclosure 感叹号     UIButtonTypeInfoLight 感叹号     UIButtonTypeInfoDark 感叹号     UIButtonTypeContactAdd 加号     */    UIButton * b = [UIButton buttonWithType:UIButtonTypeRoundedRect];    //设置frame值    b.frame = CGRectMake((screen_width - bw) / 2, (screen_height - bh) / 2, bw, bh);    //设置背景色    b.backgroundColor = [UIColor redColor];    //设置按钮标题    [b setTitle:@"按钮" forState:(UIControlStateNormal)];    //设置按钮标题颜色    [b setTitleColor:[UIColor whiteColor] forState:(UIControlStateNormal)];    //设置不同状态下文本阴影色    [b setTitleShadowColor:[UIColor orangeColor] forState:(UIControlStateNormal)];    //添加背景图片    [b setImage:[UIImage imageNamed:@"1.jpg"] forState:(UIControlStateNormal)];    //为button添加点击事件    [b addTarget:self action:@selector(buttonClicked:) forControlEvents:(UIControlEventTouchUpInside)];    //为button添加tag值    b.tag = 200;    [self.view addSubview:b];}- (void)buttonClicked:(UIButton *)sender{    //设置背景图片    [sender setBackgroundImage:[UIImage imageNamed:@"1.jpg"] forState:(UIControlStateNormal)];    [sender setTitle:@"选中" forState:(UIControlStateSelected)];    sender.selected = YES;}

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