Question

我知道这番话,但在这里是:

i 装上lash 我的意见:关于观点:

[self.view addSubview:splashView];    

UIViewAnimationOptions options = UIViewAnimationOptionCurveLinear;
[UIView animateWithDuration:0.5 delay:3.0 options:options animations:^{            
    splashView.alpha = 0.0f;
    splashView.frame = CGRectMake(512,384,-10,-10);
}

completion:^(BOOL finished){                          
    [splashView removeFromSuperview]; 
}];

这里没有特别的法典。

however, when i try to load the same view as an action through a button NOTHING happens:

-(IBAction)showSplash:(id)sender {
    [self.view addSubview:splashView];

    UIViewAnimationOptions options = UIViewAnimationOptionCurveLinear;
    [UIView animateWithDuration:0.5 delay:3.0 options:options animations:^{
        splashView.alpha = 0.0f;
        splashView.frame = CGRectMake(512,384,-10,-10);
    }

    completion:^(BOOL finished){ 
        [splashView removeFromSuperview]; 
    }];
}

为什么发生这种情况?

如果DO NOT装上电离层的闪电,然后使用 but子(行动),它就会起作用!

这是正常行为吗?

Answer 1

在穿透闪电之前重新确定甲型数值。

splashView.alpha = 1.0f;

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