[摘要]本文是對觸摸事件-拖動view的講解，對學習IOS蘋果軟件開發有所幫助,與大家分享。

案例：通過觸摸事件拖動imageView和view1和view2

注意：1.imgeview默認不能響應觸摸事件，2.視圖有三個子視圖，如何區分多個視圖

用storyBoard托人2個view和一個imageView，IBOutlet連線

案例圖片：

//讓imageView接受用戶觸摸

 [self.imageView setUserInteractionEnabled:YES];

區分哪個視圖

 [touch view] == self.imageView

觸摸事件代碼

 -(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
 {
     //1.獲取用戶點擊
     UITouch *touch = [touches anyObject];
     CGPoint location = [touch locationInView:self.view];
     CGPoint preLocation = [touch previousLocationInView:self.view];
     CGPoint dertPoint = CGPointMake(location.x - preLocation.x, location.y - preLocation.y);
     //2.判斷點擊了那個視圖
     if ([touch view] == self.imageView) {
         NSLog(@"點擊了圖像");
         
         [self.imageView setCenter:CGPointMake(self.imageView.center.x + dertPoint.x, self.imageView.center.y + dertPoint.y)];
     }else if ([touch view] == self.redView){
         NSLog(@"點擊了 hongse");
         [self.redView setCenter:CGPointMake(self.redView.center.x + dertPoint.x, self.redView.center.y + dertPoint.y)];
         
     }else if ([touch view] == self.greenView){
         //提示最好不要直接用else處理，因為隨時有可能添加新的控件
         NSLog(@"點擊 green");
         [self.greenView setCenter:CGPointMake(self.greenView.center.x + dertPoint.x, self.greenView.center.y + dertPoint.y)];
     }
     
 }