Question

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。我初始化一个searchdisplaycontroller：

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

问题在于，当我按下搜索栏时，条形图会调整为整个视图的整个宽度，但保持其x位置。这意味着它延伸到屏幕外。我猜它与“取消”按钮有关，该按钮在搜索栏旁边滑动。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，并且取消按钮可见。

任何人都有解决方案吗？

Answer 1

您可以在UISearchBar方法中为searchDisplayControllerWillBeginSearch的框架制作动画，以便更正其位置：

- (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];
}

并在完成搜索时再次将其设置为动画：

- (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];
                     }];
}

我已经回答了类似的问题，您可以查看here，我也放了一些图片。

您唯一需要做的就是调整iPad的代码。

带有UISearchDisplayController的UISearchBar在屏幕外设置动画

1 个答案: