iOS开发之按钮拖动和点击

按钮初始化

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
        // Do any additional setup after loading the view, typically from a nib. 
    self.btn = [UIButton buttonWithType:UIButtonTypeRoundedRect]; 
    self.btn.frame = CGRectMake(10, 10, 50, 50); 
     
    [self.btn setTitle:@"触摸" forState:UIControlStateNormal]; 
    [self.btn addTarget:self action:@selector(dragMoving:withEvent: )forControlEvents: UIControlEventTouchDragInside]; 
    [self.btn addTarget:self action:@selector(doClick:) forControlEvents:UIControlEventTouchUpInside]; 
    self.a=0; 
    [self.view addSubview:self.btn]; 
} 

点击方法

-(void)doClick:(UIButton*)sender 
{ 
    if (self.a==0) 
    { 
        NSLog(@"1111"); 
    } 
    self.a=0; 
} 

拖动方法

- (void) dragMoving: (UIButton *) c withEvent:ev 
{ 
    self.a=1; 
    c.center = [[[ev allTouches] anyObject] locationInView:self.view]; 
    NSLog(@"%f,,,%f",c.center.x,c.center.y); 
}