自定义 UIAlertView 在第一次出现后未调整键盘大小

Question

我有一个自定义 UIAlertVIew，其中包含 2 个文本字段，用于输入值。首次显示 customUIAlertVIew 时，视图向上移动以为键盘腾出空间。

不幸的是，每个后续显示都不是这种情况。随后的每一次，alertView 都不会向上移动键盘。

我正在寻找导致此问题的原因，以及将来如何解决此问题。

编辑： 下面是如何创建自定义 UIAlertVIew 的代码。 CustomUIAlertView.m

-(id)initWithTitle:(NSString *)title {
    if (self = [super init]){
        self.title = title;
        self.message = @"\n\n\n\n\n\n";
        [self addButtonWithTitle:@"Cancel"];
        [self addButtonWithTitle:@"Done"];
        [self setDelegate:self];

    }
    return self;
}

-(void)didPresentAlertView:(UIAlertView *)alertView{
    NSArray *subViews = [UIApplication sharedApplication].keyWindow.rootViewController.
    presentedViewController.view.subviews;

    if (subViews.count >1){
        UIView *presentedView = [subViews objectAtIndex:1];

        UILabel *player1Label = [[UILabel alloc]initWithFrame:CGRectMake(20, 55, 130, 21)];
        player1Label.text = [NSString stringWithFormat:@"Player 1 Score"];
       // player1Label.textInputMode = UIKeyboardTypeNumberPad;

        player1Label.tag = 42;
        [presentedView addSubview:player1Label];

        UILabel *player2Label = [[UILabel alloc]initWithFrame:CGRectMake(20, 75, 130, 21)];
        player2Label.text = [NSString stringWithFormat:@"player 2 Score"];
        player2Label.tag = 43;
        [presentedView addSubview:player2Label];

        self.p1ScoreField = [[UITextField alloc]initWithFrame:CGRectMake(150, 55, 80, 21)];
        self.p1ScoreField.placeholder= @"score";
        self.p1ScoreField.tag = 44;
        self.p1ScoreField.keyboardType = UIKeyboardTypeNumberPad;
        self.p1ScoreField.borderStyle = UITextBorderStyleRoundedRect;
        self.p1ScoreField.delegate = self;
        [self.p1ScoreField addTarget:self action:@selector(UITextFieldDidChange:) forControlEvents:UIControlEventEditingChanged];
        [presentedView addSubview:self.p1ScoreField];

       self.p2ScoreField = [[UITextField alloc]initWithFrame:CGRectMake(150, 75, 80, 21)];
        self.p2ScoreField.tag = 45;
        self.p2ScoreField.placeholder = @"score";
        self.p2ScoreField.keyboardType = UIKeyboardTypeNumberPad;
        self.p2ScoreField.borderStyle = UITextBorderStyleRoundedRect;
        self.p2ScoreField.delegate = self;
        [self.p2ScoreField addTarget:self action:@selector(UITextFieldDidChange:) forControlEvents:UIControlEventEditingChanged];
        [presentedView addSubview:self.p2ScoreField];


    }

}

视图呈现在单独的视图控制器中。在 viewDidAppear 方法的 alertView 上调用 Alloc/Init。

- (IBAction)addNewRoundButtonPressed:(id)sender {
    [alertView show];
}

Answer 1

Apple不支持向UIAlertView 添加子视图，强烈建议不要这样做。

您最好使用带有自定义模式演示的常规视图控制器（查找 UIViewControllerAnimatedTransitioning）或谷歌搜索第三方替代品。