顯示隱藏的視圖，然後隱藏它與Objective-C中的相同的動畫

我有一個UITextField搜索框，首先它是隱藏的，我想用動畫顯示它，它的工作原理。但是當我再次隱藏它時，動畫會突然發生，而不是動畫中定義的時間。顯示隱藏的視圖，然後隱藏它與Objective-C中的相同的動畫

這裏是我的代碼：

[UIView transitionWithView:searchbox duration:0.3 
    options:UIViewAnimationOptionTransitionCrossDissolve 
    animations:^{searchbox.hidden = NO;}completion:NULL]; 

    [UIView transitionWithView:searchbox duration:0.3 
    options:UIViewAnimationOptionTransitionCrossDissolve 
    animations:^{searchbox.hidden = YES;}completion:NULL];

來源

2017-08-02 SaMi GiMiX

只是增加其在時間隱藏以查看效果。即使在特定的時間，我的身邊也能很好地工作，但速度更快。 –

大多數使用.alpha隱藏或顯示UIView。

正確的代碼是：

[UIView transitionWithView:searchbox duration:0.3 
options:UIViewAnimationOptionTransitionCrossDissolve 
animations:^{searchbox.alpha=1;}completion:NULL]; 

[UIView transitionWithView:searchbox duration:0.3 
options:UIViewAnimationOptionTransitionCrossDissolve 
animations:^{searchbox.alpha=0;}completion:NULL];

來源

2017-08-02 09:00:19

應該有你的動畫調用之間的延遲。下面是一個例子：

- (void)viewDidLoad { 
    [super viewDidLoad]; 
    [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(show) userInfo:nil repeats:NO]; 
} 

- (void) show { 
    [UIView transitionWithView:searchbox duration:0.3 
         options:UIViewAnimationOptionTransitionCrossDissolve 
        animations:^{searchbox.hidden = NO;}completion:NULL]; 

    [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(hide) userInfo:nil repeats:NO]; 
} 

- (void) hide { 
    [UIView transitionWithView:searchbox duration:0.3 
         options:UIViewAnimationOptionTransitionCrossDissolve 
        animations:^{searchbox.hidden = YES;}completion:NULL]; 
}

來源

2017-08-02 09:01:14

要顯示

searchbox.alpha = 0; 
searchbox.isHidden = NO; 
[UIView transitionWithView:searchbox 
      duration:0.3 
      options:UIViewAnimationOptionTransitionCrossDissolve 
     animations:^{ 
      searchbox.alpha = 1.0 
    }completion:NULL];

要隱藏的觀點

searchbox.alpha = 1.0; 
searchbox.isHidden = NO; 
[UIView transitionWithView:searchbox 
      duration:0.3 
      options:UIViewAnimationOptionTransitionCrossDissolve 
     animations:^{ 
      searchbox.alpha = 0 
    }completion:^(isComplete){ 
     if (isComplete) { 
     searchbox.isHidden = YES 
     }}];

來源

2017-08-02 10:08:44

使用alpha屬性，而不是隱藏

[UIView transitionWithView:searchbox duration:0.3 
options:UIViewAnimationOptionTransitionCrossDissolve 
animations:^{searchbox.alpha = 1.0;}completion:NULL]; 

[UIView transitionWithView:searchbox duration:0.3 
options:UIViewAnimationOptionTransitionCrossDissolve 
animations:^{searchbox.alpha = 0;}completion:NULL];

來源

2017-08-02 14:03:03

顯示隱藏的視圖，然後隱藏它與Objective-C中的相同的動畫

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