這里實現的是進入頁面后直接在導航欄上顯示搜索框（包含右側取消按鈕），并彈出鍵盤且搜索框為直接可輸入狀態（第一響應者），點擊右側取消按鈕后收起鍵盤并返回上一頁。
搜索頁面
1.實現代理UISearchBarDelegate
@interface SearchViewController ()<UISearchBarDelegate>
2.創建一個UISearchBar為屬性
@property (nonatomic, strong) UISearchBar *searchBar;
3.進入頁面后彈起鍵盤和離開頁面前收起鍵盤
- (void)viewDidAppear:(BOOL)animated{ [super viewDidAppear:animated]; if (!_searchBar.isFirstResponder) { [self.searchBar becomeFirstResponder]; }}- (void)viewWillDisappear:(BOOL)animated{ [super viewWillDisappear:animated]; [self.searchBar resignFirstResponder];}4.具體實現
- (void)setBarButtonItem{ //隱藏導航欄上的返回按鈕 [self.navigationItem setHidesBackButton:YES]; //用來放searchBar的View UIView *titleView = [[UIView alloc] initWithFrame:CGRectMake(5, 7, self.view.frame.size.width, 30)]; //創建searchBar UISearchBar *searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, CGRectGetWidth(titleView.frame) - 15, 30)]; //默認提示文字 searchBar.placeholder = @"搜索內容"; //背景圖片 searchBar.backgroundImage = [UIImage imageNamed:@"clearImage"]; //代理 searchBar.delegate = self; //顯示右側取消按鈕 searchBar.showsCancelButton = YES; //光標顏色 searchBar.tintColor = UIColorFromRGB(0x595959); //拿到searchBar的輸入框 UITextField *searchTextField = [searchBar valueForKey:@"_searchField"]; //字體大小 searchTextField.font = [UIFont systemFontOfSize:15]; //輸入框背景顏色 searchTextField.backgroundColor = [UIColor colorWithRed:234/255.0 green:235/255.0 blue:237/255.0 alpha:1]; //拿到取消按鈕 UIButton *cancleBtn = [searchBar valueForKey:@"cancelButton"]; //設置按鈕上的文字 [cancleBtn setTitle:@"取消" forState:UIControlStateNormal]; //設置按鈕上文字的顏色 [cancleBtn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; [titleView addSubview:searchBar]; self.searchBar = searchBar; self.navigationItem.titleView = titleView;}5.實現代理方法
#pragma mark - UISearchBarDelegate- (BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar{ return YES;}- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar { searchBar.showsCancelButton = YES;}- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar{ NSLog(@"SearchButton");}- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar{ [self.searchBar resignFirstResponder]; [self.navigationController popViewControllerAnimated:YES];}- (void)searchBarTextDidEndEditing:(UISearchBar *)searchBar{ searchBar.showsCancelButton = YES;}- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{ NSString *inputStr = searchText; [self.results removeAllObjects]; for (ElderModel *model in self.dataArray) { if ([model.name.lowercaseString rangeOfString:inputStr.lowercaseString].location != NSNotFound) { [self.results addObject:model]; } } [self.tableView reloadData];}以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。
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