#import "ViewController.h"  
      
    @interface ViewController ()  
      
    @property (nonatomic, strong) UIButton *testbtn;  
      
    @end  
      
    @implementation ViewController  
    @synthesize testbtn;  
      
    - (void)viewDidLoad  
    {  
        [super viewDidLoad];  
    self.testbtn.frame = CGRectMake(10, 10, 50, 50);
        self.testbtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];   
      
        [self.testbtn setTitle:@"點選" forState:UIControlStateNormal];  
        [self.testbtn setTitle:@"鬆開" forState:UIControlEventTouchDown];  
    //

處理按鈕點選事件
        [self.testbtn addTarget:self action:@selector(TouchDown)forControlEvents: UIControlEventTouchDownInside];  
    //處理按鈕鬆開狀態
        [self.testbtn addTarget:self action:@selector(TouchUp)forControlEvents: UIControlEventTouchUpInside | UIControlEventTouchUpOutside];  
          
        [self.view addSubview:self.testbtn];  
    }  
      
      
    - (void)TouchDown  
    {  
    //

這裡可以處理其他點選事件
        NSLog(@"按鈕點選了");
    }  
      
    - (void)TouchUp
    {  
    //這裡可以處理其他鬆開事件
        NSlog(@"按鈕鬆開了");  
    }  
      
    @end