自動佈局錯誤

Question

我有類似的問題this poster。我用jrturton的建議將用於定製按鈕的代碼移動到viewDidLayoutSubviews。這是工作順利，直到我收到此錯誤：

'NSInternalInconsistencyException', reason: 'Auto Layout still required after sending -viewDidLayoutSubviews to the view controller. ViewController's implementation needs to send -layoutSubviews to the view to invoke auto layout.'

我對圖形很無能，我能想到的唯一的事情就是把[self.view layoutSubviews];但沒有任何修復。當我在Storyboard中取消選中「自動佈局」時，它工作正常，但這改變了我的按鈕的尺寸，我想知道是否有另一種方法來解決它？

代碼：

-(void)viewDidLayoutSubviews { 
    NSArray *arrayOfButtons = [NSArray arrayWithObjects:self.decimalButton, self.buttonOne, self.buttonTwo, self.buttonThree, nil]; 

    for (UIButton *button in arrayOfButtons) { 

     [button setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; 
     [button setTitleColor:[UIColor redColor] forState:UIControlStateHighlighted]; 

     button.layer.borderWidth = 0.25f; 
     button.layer.borderColor = [[UIColor grayColor] CGColor]; 

     CAGradientLayer *btnGradient = [CAGradientLayer layer]; 
     btnGradient.frame = button.bounds; 
     btnGradient.colors = [NSArray arrayWithObjects: 
           (id)[[UIColor colorWithRed:122.0f/255.0f green:188.0f/255.0f blue:255.0f/255.0f alpha:1.0f] CGColor], 
           (id)[[UIColor colorWithRed:96.0f/255.0f green:171.0f/255.0f blue:248.0f/255.0f alpha:1.0f] CGColor], 
           nil]; 
     [button.layer insertSublayer:btnGradient atIndex:0]; 
    } 
} 

Answer 1

我有這個問題，最近，當我想以編程方式調整由故事板創建的視圖的框架，通過提供viewDidLayoutSubviews消息處理程序。按照異常消息的指示，我試圖在-viewDidLayoutSubviews的末尾添加[self.view layoutIfNeeded]，然後運行。