ios - 将单元格添加到 UITableView，但它们不会在视觉上显示，但我可以单击并且它们可以工作

Question

将 iOS6 应用程序迁移到 iOS7，这在以前是有效的。在 6 上，一切正常。

在 iOS7 上，当向 UITableView 添加单元格时，它们不会在视觉上显示，但当我点击它们应该在的位置时，它们就像它们在那里一样工作。

它就像 UIView 不会重绘自己或其他东西。很奇怪。

有人知道从哪里开始看吗？

========== 更新 =========================

执行递归描述我明白了。

   <UITableView: 0xf3cb000; frame = (0 0; 320 724); clipsToBounds = YES; autoresize = W+H; gestureRecognizers = <NSArray: 0x1ac3ef60>; layer = <CALayer: 0x1ac3e480>; contentOffset: {0, 0}>
  | <UITableViewWrapperView: 0x1ac3f230; frame = (0 0; 320 724); autoresize = W+H; layer = <CALayer: 0x1ac3f2a0>>
  |    | <TitDeleteGroupedTableViewCell: 0x1abddfb0; baseClass = UITableViewCell; frame = (0 208; 320 44); autoresize = W; layer = <CALayer: 0x1abddd00>>
  |    | <TitGroupedTableViewCell: 0x1ac80210; baseClass = UITableViewCell; frame = (0 120; 320 44); autoresize = W; layer = <CALayer: 0x1ac7ff50>>
  |    |    | <UITableViewCellScrollView: 0x1ac803a0; frame = (0 0; 320 44); clipsToBounds = YES; autoresize = W+H; gestureRecognizers = <NSArray: 0x1ac800d0>; layer = <CALayer: 0x1ac80570>; contentOffset: {0, 0}>
  |    |    |    | <UITableViewCellContentView: 0x1ac80a70; frame = (0 0; 285 44); gestureRecognizers = <NSArray: 0x1ac80bf0>; layer = <CALayer: 0x1ac80ae0>>
  |    |    |    | <UIImageView: 0x1abc9b70; frame = (0 42; 320 2); opaque = NO; userInteractionEnabled = NO; tag = 107; layer = <CALayer: 0x1abc9c70>>
  |    |    |    | <UITextField: 0x1ac80de0; frame = (10 12; 275 23); text = ''; clipsToBounds = YES; opaque = NO; gestureRecognizers = <NSArray: 0x1abc65a0>; layer = <CALayer: 0x1ac80f20>>
  |    |    |    |    | <UITextFieldLabel: 0x1abc90d0; frame = (0 0; 275 22); text = 'Create  plan...'; clipsToBounds = YES; opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0x1abc9170>>
  |    |    |    | <UIImageView: 0x1cd992b0; frame = (276 12; 20 21); opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0x1cd99340>>
  |    | <TitGroupedTableViewCell: 0x1cf999b0; baseClass = UITableViewCell; frame = (0 44; 320 44); autoresize = W; layer = <CALayer: 0x1cf99710>>
  |    |    | <UITableViewCellScrollView: 0x1cf99b40; frame = (0 0; 320 44); clipsToBounds = YES; autoresize = W+H; gestureRecognizers = <NSArray: 0x1cf99890>; layer = <CALayer: 0x1cf99d10>; contentOffset: {0, 0}>
  |    |    |    | <UITableViewCellContentView: 0x1cf9a1f0; frame = (0 0; 320 44); gestureRecognizers = <NSArray: 0x1cf9a360>; layer = <CALayer: 0x1cf9a260>>
  |    |    |    | <UILabel: 0x1cf9a3a0; frame = (10 12; 295 20); text = 'blah'; clipsToBounds = YES; userInteractionEnabled = NO; tag = 105; layer = <CALayer: 0x1cf9a440>>
  |    |    |    | <UILabel: 0x1d297390; frame = (10 37; 295 0); text = ''; clipsToBounds = YES; userInteractionEnabled = NO; tag = 106; layer = <CALayer: 0x1d297250>>
  |    |    |    | <UIImageView: 0x165836c0; frame = (0 42; 320 2); opaque = NO; userInteractionEnabled = NO; tag = 107; layer = <CALayer: 0x165837d0>>
  |    | <TitGroupedTableViewCell: 0x1d295080; baseClass = UITableViewCell; frame = (0 0; 320 44); autoresize = W; layer = <CALayer: 0x1d24ee50>>
  |    |    | <UITableViewCellScrollView: 0x1d295210; frame = (0 0; 320 44); clipsToBounds = YES; autoresize = W+H; gestureRecognizers = <NSArray: 0x1d1f3a60>; layer = <CALayer: 0x1c5c4e40>; contentOffset: {0, 0}>
  |    |    |    | <UITableViewCellContentView: 0x1d295480; frame = (0 0; 320 44); gestureRecognizers = <NSArray: 0x1d28e4e0>; layer = <CALayer: 0x1d28df50>>
  |    |    |    | <UILabel: 0x1d295560; frame = (10 12; 295 20); text = 'Budget-Blah'; clipsToBounds = YES; userInteractionEnabled = NO; tag = 105; layer = <CALayer: 0x1d28e5f0>>
  |    |    |    | <UILabel: 0x1caaa710; frame = (10 37; 295 0); text = ''; clipsToBounds = YES; userInteractionEnabled = NO; tag = 106; layer = <CALayer: 0xdbcc210>>
  |    |    |    | <UIImageView: 0xd889590; frame = (0 42; 320 2); opaque = NO; userInteractionEnabled = NO; tag = 107; layer = <CALayer: 0xd827d80>>
  |    | <TitDeleteGroupedTableViewCell: 0x1abce730; baseClass = UITableViewCell; frame = (0 164; 320 44); autoresize = W; layer = <CALayer: 0x1abce6e0>>
  | <UIImageView: 0x1ac3ebb0; frame = (0 720; 320 3); alpha = 0; opaque = NO; autoresize = TM; userInteractionEnabled = NO; layer = <CALayer: 0x1ac3ec90>>
  | <UIView: 0x1cda3300; frame = (0 88; 320 32); autoresize = W; layer = <CALayer: 0x1cda3360>>
  |    | <UIImageView: 0x1cda27d0; frame = (0 0; 320 32); opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0x1cda2860>>
  |    | <UILabel: 0x1cda28f0; frame = (0 0; 320 32); text = 'MY PLANS'; clipsToBounds = YES; userInteractionEnabled = NO; layer = <CALayer: 0x1cda2990>>
  |    | <UIButton: 0x1cda33b0; frame = (260 0; 60 32); opaque = NO; layer = <CALayer: 0x1cda34a0>>
  |    |    | <UIButtonLabel: 0x1cda3960; frame = (17 9; 26 14); text = 'EDIT'; clipsToBounds = YES; opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0x1cda3a10>>
  | <UIImageView: 0x1ac3ed60; frame = (316 561; 3 7); alpha = 0; opaque = NO; autoresize = LM; userInteractionEnabled = NO; layer = <CALayer: 0x1ac3ee40>>

所以看起来所有的都是可见的，所以这个 PO 是正确的。所以我想发生的事情是当我单击一个空的 tableviewcell(即没有数据)但只有一个没有分隔符的背景图像(即它看起来平坦而光滑)。它仍然让我选择它，好像它是一个好细胞。

所以有两个问题。

1. 提供给该 TableView 的字典的新数据要么没有数据，要么有但没有重绘。

2. 它允许我单击空单元格，这是我不希望发生的。

Answer 1

UITableView 的内部结构在 iOS 7 中发生了变化。这在任何地方都没有记录，因为如果您只是使用公共(public) API 没有副作用(将内容添加到 contentView，而不是直接添加到 单元格).

如果您从单元格内部执行类似 self.superview 的操作，则会出现问题，因为 View 层次结构不是由公共(public) API 定义的。