点击时防止UISearchBar向右缩进

Question

在我的viewDidLoad中，我以编程方式创建了一个搜索栏。点击搜索字段后，搜索栏会向右缩进。为什么会发生这种情况？如何阻止它这样做？我没有使用autolayout。

- (void)createSearchBar {
    self.searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
    self.searchController.searchResultsUpdater = self;
    self.searchController.searchBar.delegate = self;
    [self.searchController.searchBar sizeToFit];
    self.searchController.dimsBackgroundDuringPresentation = NO;
    self.searchController.hidesNavigationBarDuringPresentation = NO;
    self.definesPresentationContext = YES;
    self.edgesForExtendedLayout = UIRectEdgeNone;
}

Answer 1

您可以尝试使用positionAdjustmentForSearchBarIcon:或setPositionAdjustment:forSearchBarIcon: 邮件调用委托调用中的搜索栏：searchBarTextDidBeginEditing: