UISearchBar – ReturnKeyType不适用于iOS 8

我在storyboard中的tableview控制器中使用UISearchbar 。 而returnKeyType是UIReturnKeySearch 。

它与iOS7的工作正常，但returnKeyType不适用于iOS8。 在iOS8中，每次在键盘上都会出现返回键。 我也尝试在viewDidLoad方法中设置returnkeytype 。 我需要做什么来设置returnKeyType = UIReturnKeySearch UIReturnKeySearch？

Answer 1

我认为你现在可以用你的硬编码逻辑。 我会更新，如果我会得到更好的解决您的问题。

 -(void)viewDidLoad { [self setReturnKeyTypeSearchForView:searchBar]; } -(void)setReturnKeyTypeSearchForView:(UIView *)view { for (id subView in view.subviews) { if ([subView isKindOfClass:[UITextField class]]) { [subView setReturnKeyType:UIReturnKeySearch]; } else { [self setReturnKeyTypeSearchForView:subView]; } } if ([view isKindOfClass:[UITextField class]]) { [(UITextField *)view setReturnKeyType:UIReturnKeySearch]; } } 

Answer 2

尝试制作SearchBar的IBOutlet

 @property (weak, nonatomic) IBOutlet UISearchBar *searchBar; 

并将下面的行代码添加到您的viewDidLoad方法

  // if u want Done return key and change accordingly. _searchBar.returnKeyType = UIReturnKeyDone; 

Answer 3

SearchViewController.h

 // #import <UIKit/UIKit.h> @interface SearchViewController : UIViewController <UISearchBarDelegate, UITableViewDataSource> { NSMutableArray *tableData; UIView *disableViewOverlay; UITableView *theTableView; UISearchBar *theSearchBar; } @property(retain) NSMutableArray *tableData; @property(retain) UIView *disableViewOverlay; @property (nonatomic, retain) IBOutlet UITableView *theTableView; @property (nonatomic, retain) IBOutlet UISearchBar *theSearchBar; - (void)searchBar:(UISearchBar *)searchBar activate:(BOOL) active; @end 

SearchViewController.m

 // #import "SearchViewController.h" @implementation SearchViewController @synthesize tableData; @synthesize disableViewOverlay; @synthesize theSearchBar; @synthesize theTableView; // Initialize tableData and disabledViewOverlay - (void)viewDidLoad { [super viewDidLoad]; self.tableData =[[NSMutableArray alloc]init]; self.disableViewOverlay = [[UIView alloc] initWithFrame:CGRectMake(0.0f,44.0f,320.0f,416.0f)]; self.disableViewOverlay.backgroundColor=[UIColor blackColor]; self.disableViewOverlay.alpha = 0; } // Since this view is only for searching give the UISearchBar // focus right away - (void)viewDidAppear:(BOOL)animated { [self.theSearchBar becomeFirstResponder]; [super viewDidAppear:animated]; } #pragma mark - #pragma mark UISearchBarDelegate Methods - (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText { // We don't want to do anything until the user clicks // the 'Search' button. // If you wanted to display results as the user types // you would do that here. } - (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar { // searchBarTextDidBeginEditing is called whenever // focus is given to the UISearchBar // call our activate method so that we can do some // additional things when the UISearchBar shows. [self searchBar:searchBar activate:YES]; } - (void)searchBarTextDidEndEditing:(UISearchBar *)searchBar { // searchBarTextDidEndEditing is fired whenever the // UISearchBar loses focus // We don't need to do anything here. } - (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar { // Clear the search text // Deactivate the UISearchBar searchBar.text=@""; [self searchBar:searchBar activate:NO]; } - (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar { // Do the search and show the results in tableview // Deactivate the UISearchBar // You'll probably want to do this on another thread // SomeService is just a dummy class representing some // api that you are using to do the search NSArray *results = [SomeService doSearch:searchBar.text]; [self searchBar:searchBar activate:NO]; [self.tableData removeAllObjects]; [self.tableData addObjectsFromArray:results]; [self.theTableView reloadData]; } // We call this when we want to activate/deactivate the UISearchBar // Depending on active (YES/NO) we disable/enable selection and // scrolling on the UITableView // Show/Hide the UISearchBar Cancel button // Fade the screen In/Out with the disableViewOverlay and // simple Animations - (void)searchBar:(UISearchBar *)searchBar activate:(BOOL) active{ self.theTableView.allowsSelection = !active; self.theTableView.scrollEnabled = !active; if (!active) { [disableViewOverlay removeFromSuperview]; [searchBar resignFirstResponder]; } else { self.disableViewOverlay.alpha = 0; [self.view addSubview:self.disableViewOverlay]; [UIView beginAnimations:@"FadeIn" context:nil]; [UIView setAnimationDuration:0.5]; self.disableViewOverlay.alpha = 0.6; [UIView commitAnimations]; // probably not needed if you have a details view since you // will go there on selection NSIndexPath *selected = [self.theTableView indexPathForSelectedRow]; if (selected) { [self.theTableView deselectRowAtIndexPath:selected animated:NO]; } } [searchBar setShowsCancelButton:active animated:YES]; } #pragma mark - #pragma mark UITableViewDataSource Methods - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return [tableData count]; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *MyIdentifier = @"SearchResult"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:MyIdentifier] autorelease]; } id *data = [self.tableData objectAtIndex:indexPath.row]; cell.textLabel.text = data.name; return cell; } #pragma mark - #pragma mark Memory Management Methods - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } - (void)viewDidUnload { // Release any retained subviews of the main view. // eg self.myOutlet = nil; } - (void)dealloc { [theTableView release], theTableView = nil; [theSearchBar release], theSearchBar = nil; [tableData dealloc]; [disableViewOverlay dealloc]; [super dealloc]; } @end 

用UISearchBar和UITableViewbuild立一个SearchView

这可能会帮助你:)

Answer 4

我不确定是否正确理解你的问题。 你想要“search”button，而不是“返回”button，对不对？ 在ios 8中有一个新的SearchController，试试看：

 YourTableViewController.h @interface YourTableViewController : UITableViewController<UISearchResultsUpdating> @end 

现在执行：

 YourTableViewController.m - (void)viewDidLoad { // initializing with the same controller as presenting UISearchController *searchController = [[UISearchController alloc] initWithSearchResultsController:nil]; searchController.searchResultsUpdater = self; searchController.searchBar.frame = CGRectMake(searchController.searchBar.frame.origin.x, searchController.searchBar.frame.origin.y, searchController.searchBar.frame.size.width, 44.0f); searchController.dimsBackgroundDuringPresentation = NO; searchController.searchBar.delegate = self; searchController.searchBar.returnKeyType = UIReturnKeySearch; //should be search by default.. you can change to whatever you want. // adding searchBar into HeaderView self.tableView.tableHeaderView = searchController.searchBar; // just to be able to present results on the same controller self.definesPresentationContext = YES; } 

您还必须从UISearchResultsUpdating协议实现方法：

 - (void)updateSearchResultsForSearchController:(UISearchController *)searchController { // you can leave it blank } 

编辑：如果它不是你要找的请评论，所以我可以相应地更新我的答案

Answer 5

试试这个viewDidLoad ：

 UITextField *txfSearchField = [yourSearchbar valueForKey:@"_searchField"]; if([txfSearchField conformsToProtocol:@protocol(UITextInputTraits)]) { [txfSearchField setReturnKeyType:UIReturnKeyDefault]; }