3

我有一个行为正常的 UISearchBar - 如果我点击“搜索”或“取消”，键盘就会消失。

但是，当我在导航堆栈上推送一个新的视图控制器时，如果键盘是打开的，它就不会关闭。它保留在旧视图控制器中，如果我导航回它，键盘仍会显示。

我被难住了，因为我的 searchBarShouldEndEditing 方法按预期调用了，我做了 [activeSearchBar resignFirstResponder]。这适用于“搜索”或“取消”，但不适用于由视图消失触发。

我的委托代码：

#pragma mark Search bar delegate methods__________________________

- (BOOL)searchBarShouldBeginEditing:(UISearchBar *)activeSearchBar
{
    NSLog(@"searchBarShouldBeginEditing");
    [activeSearchBar setShowsCancelButton:TRUE animated:YES];

    if (!showSearchType)
        return TRUE;

    if([UIView respondsToSelector:@selector(animateWithDuration:animations:)]) {
        // iOS 4.0 and later
        [UIView animateWithDuration:0.3 animations:^ {
            searchTypeView.frame = CGRectMake(0, 44, 320, 69);
            searchTypeView.bounds = CGRectMake(0, 0, 320, 69);
            grayBg.alpha = 0.6;
        }];
    } else {
        // Before iOS 4.0
        searchTypeView.frame = CGRectMake(0, 44, 320, 69);
        searchTypeView.bounds = CGRectMake(0, 0, 320, 69);
        grayBg.alpha = 0.6;
    }

    self.frame = CGRectMake(0, 0, 320, 113);

    [self bringSubviewToFront:searchTypeView];
    [self bringSubviewToFront:activeSearchBar];

    return TRUE;
}


- (BOOL)searchBarShouldEndEditing:(UISearchBar *)activeSearchBar
{
    NSLog(@"searchBarShouldEndEditing");

    if ([activeSearchBar isFirstResponder]) {
        NSLog(@"activeSearchBar isFirstResponder");
    }
    [activeSearchBar resignFirstResponder];

    [activeSearchBar setShowsCancelButton:FALSE animated:YES];

    if (!showSearchType)
        return TRUE;

    if([UIView respondsToSelector:@selector(animateWithDuration:animations:)]) {
        // iOS 4.0 and later
        [UIView animateWithDuration:0.3 animations:^ {
            searchTypeView.frame = CGRectMake(0, 9, 320, 69);
            searchTypeView.bounds = CGRectMake(0, 0, 320, 0);
            grayBg.alpha = 0;
        }];
    } else {
        // Before iOS 4.0
        searchTypeView.frame = CGRectMake(0, 9, 320, 69);
        searchTypeView.bounds = CGRectMake(0, 0, 320, 0);
        grayBg.alpha = 0;
    }

    self.frame = CGRectMake(0, 0, 320, 44);

    return TRUE;
}

- (void)searchBarTextDidEndEditing:(UISearchBar *)activeSearchBar {
    NSLog(@"searchBarTextDidEndEditing");

    if ([activeSearchBar isFirstResponder]) {
        NSLog(@"activeSearchBar isFirstResponder");
    }

    [activeSearchBar resignFirstResponder];

}

- (void)searchBarCancelButtonClicked:(UISearchBar *)activeSearchBar
{
    NSLog(@"searchBarCancelButtonClicked");

    [activeSearchBar resignFirstResponder];
}

- (void)searchBarSearchButtonClicked:(UISearchBar *)activeSearchBar
{
    NSLog(@"searchBarSearchButtonClicked");

    self.query = searchBar.text;

    [activeSearchBar resignFirstResponder];

    [searchView startSearch];
}

这输出：

2011-12-07 20:00:33.061 MyApp[55725:307] searchBarShouldEndEditing
2011-12-07 20:00:33.063 MyApp[55725:307] activeSearchBar isFirstResponder
2011-12-07 20:00:33.066 MyApp[55725:307] searchBarTextDidEndEditing

感谢您的任何想法！

4

2 回答 2

6

您也可以：在您的 .h 文件中声明 searchBar 变量，制作属性等...然后在您的按钮单击事件方法上，推动另一个视图，写第一行：

[yourSearchBar resignFirstResponder];
于 2011-12-08T05:37:00.423 回答
2

好的，我找到了一个解决方案，虽然它不是很好。

在父视图控制器中，我在任何会触发将新视图控制器推送到导航堆栈上的内容之前放置以下行：

[self.view endEditing:YES];

这似乎有点脆弱且容易出错......我很想知道是否有更好的方法。

于 2011-12-08T01:04:40.900 回答