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[英]UISearchBar : searchBarSearchButtonClicked delegate is not called
[英]Objective C - searchBarSearchButtonClicked delegate of UIsearchBar not being called after adding shouldChangeTextInRange
我正在尝试实现UISearchBar委托
-(BOOL)searchBar:(UISearchBar *)searchBar shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)string{
NSCharacterSet *set = [[NSCharacterSet characterSetWithCharactersInString:@"abcdefghijklmnopqrstuvwxyzQWERTYUIOPLKJHGFDSAZXCVBNM0123456789!@#$%^&*()_+./?'\"\\*- "] invertedSet];
const char * _char = [string cStringUsingEncoding:NSUTF8StringEncoding];
string = [[string componentsSeparatedByCharactersInSet:set] componentsJoinedByString:@""];
int isBackSpace = strcmp(_char, "\b");
if((string!=nil && ![string isEqualToString:@""]) || isBackSpace == -8)
{
return YES;
}
return NO;
}
并单击搜索按钮
-(void) searchBarSearchButtonClicked:(UISearchBar *)searchBarSender{[mySearchBar resignFirstResponder];
}
但是searchBarSearchButtonClicked委托不会被触发。
我试着删除shouldChangeTextInRange然后被调用。 我做错了什么?
在这里找到答案
这是由于我没有在允许的字符中传递\\ n字符,并且搜索使用了\\ n被调用。
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