iOS Search bar 输入空字符串也可以搜索
Search bar delegate
- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar { UITextField *searchBarTextField = nil; for (UIView *mainview in searchBar.subviews) { if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_6_1) { if ([mainview isKindOfClass:[UITextField class]]) { searchBarTextField = (UITextField *)mainview; break; } } for (UIView *subview in mainview.subviews) { if ([subview isKindOfClass:[UITextField class]]) { searchBarTextField = (UITextField *)subview; break; } } } searchBarTextField.enablesReturnKeyAutomatically = NO; }
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