我有以下代码
// Breakpoint here
[label removeFromSuperview];
[label release];
label = nil;
使用调试器输出单步执行它
(gdb) po [self subviews]
<NSCFArray 0x476af70>(
<UIImageView: 0x47581a0; frame = (0 0; 232 81); opaque = NO; autoresize = W+H; userInteractionEnabled = NO; layer = <CALayer: 0x476b3d0>>,
<UILabel: 0x4758870; frame = (15 11; 202 56); text = 'Test'; clipsToBounds = YES; autoresize = W+H; userInteractionEnabled = NO; layer = <CALayer: 0x476b590>>
)
(gdb) po label
<UILabel: 0x4758870; frame = (15 11; 202 56); text = 'Test'; clipsToBounds = YES; autoresize = W+H; userInteractionEnabled = NO; layer = <CALayer: 0x476b590>>
(gdb) n
(gdb) n
(gdb) n
(gdb) po [self subviews]
<NSCFArray 0x478c4e0>(
<UIImageView: 0x47581a0; frame = (0 0; 232 81); opaque = NO; autoresize = W+H; userInteractionEnabled = NO; layer = <CALayer: 0x476b3d0>>
)
然而它仍然是可见的,它并没有消失。即使我[self setNeedsDisplay]
之后立即做也不会。
有没有其他人遇到过这个?它是 SDK 中的错误还是我遗漏了什么?