UIScrollview touchesbegan，touchesmoved，touchesended actions

Question

我在UIView中做了這個觸摸動作，即在UI中有 有兩個或三個子視圖v1，v2，v3。我使用下面的代碼將圖像i1，i2，i3放置在相應的視圖中，如果我移動了圖像，圖像將移動到視圖中的那一點。

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { 
    UITouch *touch = [touches anyObject]; 
    if ([touch view] == v1) 
    { 
     CGPoint location = [touch locationInView:v1]; 
     i1.center = location; 
    } 
     else if([touch view] == v2) 
    { 
     CGPoint location = [touch locationInView:v2]; 
     i2.center = location; 
    } 
} 
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { 
    UITouch *touch = [touches anyObject]; 
    if ([touch view] == v1) 
    { 
     CGPoint location = [touch locationInView:v1]; 
     i1.center = location; 
    } 
     else if([touch view] == v2) 
    { 
     CGPoint location = [touch locationInView:v1]; 
     i2.center = location; 
    } 
} 

現在，我必須這樣做28個圖像序列，所以我去了UIScrollView的，但我不能得到那個請我解釋清楚的代碼。非常感謝您的幫助。

Answer 1

您需要繼承UIScrollView以獲取UIScrollView的觸摸事件。