#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:@"点击" forState:UIControlStateNormal];  

        [self.testbtn setTitle:@"松开" forState:UIControlEventTouchDown];  

    //

        [self.testbtn addTarget:self action:@selector(TouchDown)forControlEvents: UIControlEventTouchDownInside];  

    //

        [self.testbtn addTarget:self action:@selector(TouchUp)forControlEvents: UIControlEventTouchUpInside | UIControlEventTouchUpOutside];  

          

        [self.view addSubview:self.testbtn];  

    }  

      

      

    - (void)TouchDown  

    {  

    //

        NSLog(@"按钮点击了");

    }  

      

    - (void)TouchUp

    {  

    //

        NSlog(@"按钮松开了");  

    }  

      

    @end