特别是使用iOS 11(而不是以前的操作系统),当您点击搜索栏开始键入时,它会跳到屏幕的顶部。
我可以通过使用此代码在屏幕顶部附近时可以解决此问题:
if #available(iOS 11, *) {
navigationItem.searchController = searchController
navigationItem.hidesSearchBarWhenScrolling = false
} else {
BugsTable.tableHeaderView = searchController.searchBar
}
但是,当我在视图中间有一个搜索栏(即其他元素上方)时,该代码无法正常工作,因为它告诉导航控制器内的搜索栏。我看到了以下问题,但是对于Swift没有工作答案:
ios 11搜索栏跳到屏幕顶部
ios 11 SearchController跳跃屏幕顶部
我的ViewDidload设置参数为:
searchController.searchResultsUpdater = self
searchController.hidesNavigationBarDuringPresentation = false
searchController.dimsBackgroundDuringPresentation = false
searchController.searchBar.sizeToFit()
ResultsTable.tableHeaderView = searchController.searchBar
searchController.searchBar.barTintColor = MyGlobalVariable.themeMainColor
我在这里想念什么?
尝试以下:
if (@available(iOS 11, *)){
[searchVC.searchBar addObserver:self forKeyPath:@"frame" options: NSKeyValueObservingOptionNew context:nil];
}else{
[view addSubview:searchVC.searchBar];
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
CGRect rect = [change[@"new"] CGRectValue];
if (rect.origin.y == 14) {
CGRect temp = rect;
temp.origin.y = 20;
[self.searchVC.searchBar setValue:@(temp) forKey:@"frame"];
}else if (rect.size.height == 56){
CGRect temp = rect;
temp.size.height = 50;
[self.searchVC.searchBar setValue:@(temp) forKey:@"frame"];
}
}