点击uisearchbar（ios 7）时出现此日志错误
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: ' -[NSBigMutableString replaceCharactersInRange:withString:]: nil argument'
*** First throw call stack:
(
0 CoreFoundation 0x02c905e4 __exceptionPreprocess + 180
1 libobjc.A.dylib 0x02a138b6 objc_exception_throw + 44
2 CoreFoundation 0x02c903bb +[NSException raise:format:] + 139
3 Foundation 0x0243863e -[NSBigMutableString replaceCharactersInRange:withString:] + 117
4 Foundation 0x02438595 -[NSConcreteMutableAttributedString replaceCharactersInRange:withAttributedString:] + 384
5 UIFoundation 0x077b49f4 __71-[NSConcreteTextStorage replaceCharactersInRange:withAttributedString:]_block_invoke + 68
6 UIFoundation 0x077b492f -[NSConcreteTextStorage replaceCharactersInRange:withAttributedString:] + 121
7 Foundation 0x02462d46 -[NSMutableAttributedString setAttributedString:] + 90
8 UIKit 0x016794e2 __65-[UIFieldEditor setAttributedText:andSetCaretSelectionAfterText:]_block_invoke + 53
9 UIFoundation 0x077b2491 -[NSTextStorage coordinateEditing:] + 48
10 UIKit 0x01679375 -[UIFieldEditor setAttributedText:andSetCaretSelectionAfterText:] + 151
11 UIKit 0x0167969b -[UIFieldEditor setAttributedText:] + 48
12 UIKit 0x01c5e3f5 -[UITextField willAttachFieldEditor:] + 340
13 UIKit 0x016784d5 -[UIFieldEditor becomeFieldEditorForView:] + 927
14 UIKit 0x01c55643 -[UITextField _becomeFirstResponder] + 160
15 UIKit 0x0184441a -[UISearchBarTextField _becomeFirstResponder] + 98
16 UIKit 0x01c554a1 -[UITextField __resumeBecomeFirstResponder] + 53
17 UIKit 0x0184466e __45-[UISearchBarTextField _becomeFirstResponder]_block_invoke + 259
18 UIKit 0x01844563 -[UISearchBarTextField _becomeFirstResponder] + 427
19 UIKit 0x016d2585 -[UIResponder becomeFirstResponder] + 400
20 UIKit 0x015d5d0b -[UIView(Hierarchy) becomeFirstResponder] + 114
21 UIKit 0x01c550e3 -[UITextField becomeFirstResponder] + 51
22 UIKit 0x018415b0 -[UISearchBar(UISearchBarStatic) becomeFirstResponder] + 42
23 UIKit 0x0183f9ef -[UISearchBar tappedSearchBar:] + 57
24 UIKit 0x018f0f8c _UIGestureRecognizerSendActions + 230
25 UIKit 0x018efc00 -[UIGestureRecognizer _updateGestureWithEvent:buttonEvent:] + 383
26 UIKit 0x018f166d -[UIGestureRecognizer _delayedUpdateGesture] + 60
27 UIKit 0x018f4bcd ___UIGestureRecognizerUpdate_block_invoke + 57
28 UIKit 0x018f4b4e _UIGestureRecognizerRemoveObjectsFromArrayAndApplyBlocks + 317
29 UIKit 0x018eb248 _UIGestureRecognizerUpdate + 199
30 UIKit 0x015b7d4a -[UIWindow _sendGesturesForEvent:] + 1291
31 UIKit 0x015b8c6a -[UIWindow sendEvent:] + 1030
32 UIKit 0x0158ca36 -[UIApplication sendEvent:] + 242
33 UIKit 0x01576d9f _UIApplicationHandleEventQueue + 11421
34 CoreFoundation 0x02c198af __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
35 CoreFoundation 0x02c1923b __CFRunLoopDoSources0 + 235
36 CoreFoundation 0x02c3630e __CFRunLoopRun + 910
37 CoreFoundation 0x02c35b33 CFRunLoopRunSpecific + 467
38 CoreFoundation 0x02c3594b CFRunLoopRunInMode + 123
39 GraphicsServices 0x0302d9d7 GSEventRunModal + 192
40 GraphicsServices 0x0302d7fe GSEventRun + 104
41 UIKit 0x0157994b UIApplicationMain + 1225
42 Mobile4Job 0x00002b5d main + 141
43 libdyld.dylib 0x03451725 start + 0
)
libc++abi.dylib: terminating with uncaught exception of type NSException
我从来没有看到类似的东西，我无法修复它。
答案 0 :(得分：0)
从堆栈跟踪中，假设您要重建在搜索栏中输入的文本，并尝试用其他字符串替换范围中的字符串，并且您的其他字符串似乎是nil。请检查您使用的字符串，其中一个是nil
答案 1 :(得分：0)
我发现了问题，我有一个UITextfield实现：
@implementation UITextField (clearCustomButton)
- (id)initWithFrame:(CGRect)frame{
self = [super initWithFrame:frame];
if (self) {
}
return self;
}
- (void)awakeFromNib{
self.clearButtonMode = UITextFieldViewModeWhileEditing;
}
- (CGRect)clearButtonRectForBounds:(CGRect)bounds{
return CGRectMake(bounds.size.width - 20, (bounds.size.height - 14)/2, 14, 14);
}
@end
如果我删除：
- (id)initWithFrame:(CGRect)frame{
self = [super initWithFrame:frame];
if (self) {
}
return self;
}
它有效。顺便说一句，感谢@danypata