1 前言
UIButton为按钮控件，在IOS开发中十分常见，可以为其设置事件。
2 代码实例
ZYViewController.m：
@synthesize myButton;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.view.backgroundColor = [UIColor whiteColor];
myButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];//设置按钮样式为圆角矩形
myButton.frame = CGRectMake(110.0f, 200.0f, 100.0f, 37.0f);
[myButton setTitle:@"Press Me" forState:UIControlStateNormal];//按下按钮时候的标题
[myButton setTitle:@"I'm Pressed" forState:UIControlStateHighlighted];//按下按钮后抬手时候的标题
[myButton addTarget:self action:@selector(buttonIsPressed:) forControlEvents:UIControlEventTouchDown];//按下按钮触发事件
[myButton addTarget:self action:@selector(buttonIsTapped:) forControlEvents:UIControlEventTouchUpInside];//按下按钮后抬手时候触发事件
[self.view addSubview:myButton];
}
-(void)buttonIsPressed:(UIButton *)paramSender{
NSLog(@"Button is pressed");
}
-(void)buttonIsTapped:(UIButton *)paramSender{
NSLog(@"Button is tapped");
}
运行结果：
点击按钮时候：
控制台输出：
2013-04-24 16:00:13.549 UIButtonTest[1635:c07] Button is pressed
2013-04-24 16:00:13.623 UIButtonTest[1635:c07] Button is tapped
ZYUIButtonViewController.m：
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.view.backgroundColor = [UIColor whiteColor];
myButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];//设置按钮样式为圆角矩形
myButton.frame = CGRectMake(110.0f, 200.0f, 100.0f, 37.0f);
[myButton setBackgroundImage:[UIImage imageNamed:@"ok_btn_normal.png"] forState:UIControlStateNormal];//正常状态下时候的标题
[myButton setBackgroundImage:[UIImage imageNamed:@"ok_btn_pressed.png"] forState:UIControlStateHighlighted];//按下按钮时候的标题
[self.view addSubview:myButton];
}
运行结果：
点击按钮时候：
3 结语
以上是对UIbutton的简单介绍希望对大家有所帮助。