1
我有一個叫activityView
的UIView
,它包含兩個子視圖activityIndicator
和cancelOperationsButton
。這些視圖嵌入XIB並連接到我的視圖控制器。我的核心動畫塊沒有像我期望的那樣工作
我有兩種方法與激活(顯示)和停用(隱藏)處理這兩個子視圖:
- (void) enableActivityIndicator {
[activityIndicator startAnimating];
[cancelOperationsButton setHidden:NO];
}
- (void) disableActivityIndicator {
[activityIndicator stopAnimating];
[cancelOperationsButton setHidden:YES];
}
通過自己,這兩種方法很好地工作。
爲了讓這個有點拋光的,我想補充一點,在進出這些淡出子視圖動畫:
- (void) enableActivityIndicator {
[activityIndicator startAnimating];
[cancelOperationsButton setHidden:NO];
[UIView beginAnimations:@"fadeIn" context:nil];
[UIView setAnimationDelay:0.0f];
[UIView setAnimationDuration:1.0f];
[UIView setAnimationCurve:UIViewAnimationCurveEaseIn];
activityView.alpha = 1.0f;
[UIView commitAnimations];
}
- (void) disableActivityIndicator {
[UIView beginAnimations:@"fadeOut" context:nil];
[UIView setAnimationDelay:0.0f];
[UIView setAnimationDuration:1.0f];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
activityView.alpha = 0.0f;
[UIView commitAnimations];
[activityIndicator stopAnimating];
[cancelOperationsButton setHidden:YES];
}
但是動畫不工作 - 子視圖只顯示或不消失父視圖的alpha
屬性對透明度有影響。
我應該如何編寫這些方法來獲得我之後的淡入,淡出效果?
編輯
這裏有一個完美的作品安排:
- (void) enableActivityIndicator {
activityView.alpha = 0.0f;
[activityIndicator startAnimating];
[cancelOperationsButton setHidden:NO];
[UIView beginAnimations:@"fadeIn" context:nil];
[UIView setAnimationDelay:0.0f];
[UIView setAnimationDuration:0.2f];
[UIView setAnimationCurve:UIViewAnimationCurveEaseIn];
activityView.alpha = 1.0f;
[UIView commitAnimations];
}
- (void) disableActivityIndicator {
[UIView beginAnimations:@"fadeOut" context:nil];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:@selector(disableActivityIndicatorComplete)];
[UIView setAnimationDelay:0.0f];
[UIView setAnimationDuration:0.2f];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
activityView.alpha = 0.0f;
[UIView commitAnimations];
}
- (void) disableActivityIndicatorComplete {
[activityIndicator stopAnimating];
[cancelOperationsButton setHidden:YES];
}
完美,歡呼! – 2010-04-29 05:13:32