ios - 为什么我的 UIView 中没有显示任何内容？

Question

我有以下代码添加了一个 UIView，然后添加了一个 UIImageView 和 UILabel，UIView 显示正确，但我在 View 旁边没有显示任何内容。我到处都看过，但找不到答案。 UIView 在特定条件下呈现，当它被点击时它会消失。

这是我的代码。

UIView *actionView = [[UIView alloc] initWithFrame:CGRectMake(20, 180, 280, 165)];
        UITapGestureRecognizer *singleFingerTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];
        [actionView addGestureRecognizer:singleFingerTap];
        actionView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.5f];
        actionView.layer.cornerRadius = 5;
        actionView.layer.masksToBounds = YES;
        [self.view addSubview:actionView];
        UILabel *actionText = [[UILabel alloc] initWithFrame:CGRectMake(20, 180, 280, 165)];
        actionText.text = @"Hello";
        actionText.textColor = [UIColor redColor];
        actionText.textAlignment = NSTextAlignmentCenter;
        [actionText setTextColor:[UIColor redColor]];
        [actionText setBackgroundColor:[UIColor clearColor]];
        [actionText setFont:[UIFont fontWithName: @"Trebuchet MS" size: 14.0f]];
        actionText.Frame = CGRectMake(20, 180, 280, 165);
         [actionView addSubview:actionText];
        UIImage* image = [UIImage imageNamed:[NSString stringWithFormat:@"trash-icon.png"]];
        UIImageView* blockView = [[UIImageView alloc] initWithImage:image];
        blockView.frame = CGRectMake(109, 273, 40, 40);
      [actionView addSubview:blockView];

Answer 1

改变你的框架位置，比如..

    UILabel *actionText = [[UILabel alloc] initWithFrame:CGRectMake(20, 10, 280, 40)];
    actionText.text = @"Hello";
    actionText.textColor = [UIColor redColor];
    actionText.textAlignment = NSTextAlignmentCenter;
    [actionText setTextColor:[UIColor redColor]];
    [actionText setBackgroundColor:[UIColor clearColor]];
    [actionText setFont:[UIFont fontWithName: @"Trebuchet MS" size: 14.0f]];
    [actionView addSubview:actionText];

    UIImage* image = [UIImage imageNamed:[NSString stringWithFormat:@"trash-icon.png"]];
    UIImageView* blockView = [[UIImageView alloc] initWithImage:image];
    blockView.frame = CGRectMake(109,70, 40, 40);
    [actionView addSubview:blockView];