2

我有标准的 iPad 视图控制器,顶部有一个自定义导航栏。在 xib 文件中,我添加了一个与视图右边缘对齐的 UISearchBar。搜索栏的宽度为 320 像素。我像这样初始化一个搜索显示控制器:

// Search display controller
self.mySearchDisplayController = [[UISearchDisplayController alloc] initWithSearchBar:_searchBar 
                                                                                contentsController:self];
_mySearchDisplayController.delegate = self;
_mySearchDisplayController.searchResultsDataSource = self;
_mySearchDisplayController.searchResultsDelegate = self;

问题是当我按下搜索栏时,栏会调整为整个视图的全宽,但保持其 x 位置。这意味着它延伸到屏幕之外。我猜这与滑入搜索栏旁边的“取消”按钮有关。如果我将搜索栏放在屏幕的最左侧,它会动画到屏幕的整个宽度,并且可以看到取消按钮。

有人对此有解决方案吗?

4

1 回答 1

2

您可以UISearchBarsearchDisplayControllerWillBeginSearch方法中为您的框架设置动画以纠正其位置,如下所示:

- (void)searchDisplayControllerWillBeginSearch:(UISearchDisplayController *)controller
{
    // animate the search bar to the left ie. x=0
    [UIView animateWithDuration:0.25f animations:^{
        CGRect frame = controller.searchBar.frame;
        frame.origin.x = 0;
        controller.searchBar.frame = frame;
    }];
    // remove all toolbar items if you need to
    [self.toolbar setItems:nil animated:YES];
}

并在完成搜索后再次对其进行动画处理:

- (void)searchDisplayControllerDidEndSearch:(UISearchDisplayController *)controller
{
    // animate search bar back to its previous position and size
    // in my case it was x=55, y=1
    // and reduce its width by the amount moved, again 55px
    [UIView animateWithDuration:0.25f 
                          delay:0.0f
                    // the UIViewAnimationOptionLayoutSubviews is IMPORTANT,
                    // otherwise you get no animation
                    // but some kind of snap-back movement 
                        options:UIViewAnimationOptionLayoutSubviews 
                     animations:^{
                         CGRect frame = self.toolbar.frame;
                         frame.origin.y = 1;
                         frame.origin.x = 55;
                         frame.size.width -= 55;
                         controller.searchBar.frame = frame;
                     } 
                     completion:^(BOOL finished){
                         // when finished, insert any tool bar items you had
                         [self.toolbar setItems:[NSArray arrayWithObjects: /* put your bar button items here */] animated:YES];
                     }];
}

我已经回答了一个类似的问题,你可以在这里查看,我也放了一些图片。

您唯一需要做的就是为 iPad 调整代码。

于 2012-09-19T17:46:03.090 回答