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我試圖計算何時出現左滑動操作。然而,對於代碼我迄今爲止的結果總是1.iOS - 計數滑動
任何想法爲什麼?
- (void)handleSwipes:(UISwipeGestureRecognizer *)sender
{
int countLeft = 0;
if (sender.direction == UISwipeGestureRecognizerDirectionLeft)
{
countLeft += 1;
imagesequence = @"2.png";
[_MainBackground setImage:[ UIImage imageNamed: imagesequence]];
NSLog(@"LEFT = %d", countLeft);
}
if (sender.direction == UISwipeGestureRecognizerDirectionRight)
{
NSLog(@"RIGHT");
imagesequence = @"3.png";
[_MainBackground setImage:[ UIImage imageNamed: imagesequence]];
}
}
如果您將代碼顯示在您設置GestureRecognize及其代表的位置,這對您會有幫助,因此我們可以看到您是如何定義手勢識別器的。另外,向我們展示如何/在哪裏定義countLeft ...是否與@synthesize語句或什麼有關? – sunny