在iPhone中，当点击键盘上的搜索按钮时，搜索栏中的文本就会消失

Question

在iPhone的搜索栏输入文本后，点击键盘上的搜索按钮，文本消失。我添加了<UISearchDisplayDelegate, UISearchBarDelegate>和BOOL isSearching;

- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar {
    isSearching = YES;
}
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
     NSLog(@"Text change - %d",isSearching);
     NSString *str = searchBar.text;
     self.searchDisplayController.searchBar.text = str;
     //Remove all objects first.
     [filteredArray removeAllObjects];
     if([searchText length] != 0) {
         isSearching = YES;
         [self searchTableList];
     }
     else {
         isSearching = NO;
     }
     [self.tableView1 reloadData];
}
- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar {
  NSLog(@"Cancel clicked");
}
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {
   [self searchTableList];
   [searchBar resignFirstResponder];
}
- (void)searchTableList {
    searchString = searchBar.text;
    for (NSString *tempStr in tableData) {
        NSComparisonResult result = [tempStr compare:searchString options:   (NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch) range:NSMakeRange(0, [searchString length])];
        if (result == NSOrderedSame) {
            [filteredArray addObject:tempStr];
        }
    }
}

Answer 1

Swift 4.0:

我有同样的问题，但我通过定义UISearchBarDelegate方法即searchBarTextDidEndEditing解决

func searchBarTextDidEndEditing(_ searchBar: UISearchBar) {
}

无需在方法中编写任何代码。我希望这个答案能对你有所帮助。

Answer 2

我在UISearchController中遇到了同样的问题。
我阻止搜索控制器清除文本，将其存储在一个字符串中，然后在停用控制器后，将存储的文本分配给搜索栏。

Objective - C:

-(void) searchBarSearchButtonClicked:(UISearchBar *)searchBar {
    NSString *text = searchBar.text;
    [self.searchController setActive:NO animated:YES];
    self.searchController.searchBar.text = text;
}

迅速2。X:

func searchBarSearchButtonClicked(searchBar: UISearchBar) {
    let text = searchBar.text
    searchController.active = false
    searchController.searchBar.text = text
}

希望能有所帮助。

Answer 3

Swift 5

func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
    searchBar.resignFirstResponder()
}