这是我的搜索条形码。我输入取消按钮有问题，因为我输入了取消按钮擦除的东西。如何显示取消按钮？
//
// HomePageViewController.m
// LiveVideoStreaming
//
// Created by Bodacious IT Hub on 14/06/16.
// Copyright © 2016 SHUBHAM GUPTA. All rights reserved.
//
#import "HomePageViewController.h"
#import "VideoTableViewCell.h"
#import "PeopleTableViewCell.h"
#import "FollowingTableViewCell.h"
#import "ViewerViewController.h"
#import "MyTableViewController.h"
#import "webservice.h"
@interface HomePageViewController ()
@property (weak, nonatomic) IBOutlet UIBarButtonItem *moreBtn;
@property (strong, nonatomic) UISearchController *searchController;
@property (strong, nonatomic) NSArray *searchResults;
@property BOOL searchControllerWasActive;
@property BOOL searchControllerSearchFieldWasFirstResponder;
@property BOOL shouldShowSearchResults;
@end
@implementation HomePageViewController
{
ViewerViewController *viewVideo;
NSInteger index;
NSArray *items;
CarbonTabSwipeNavigation *carbonTabSwipeNavigation;
MyTableViewController *myTableView;
UIStoryboard *storyBoard;
VideoTableViewCell *video;
NSArray<MyTableViewController *> *viewControllersCollection;
NSUInteger selectedViewControllerIndex;
NSArray *searchedArray;
BOOL isScrolling;
BOOL fullvisible;
NSMutableArray *Username;
NSString *searchText;
NSMutableArray* captionList;
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
_shouldShowSearchResults = false;
Username = [[NSMutableArray alloc]init];
items = @[
@"Video",@"People",@"Following"
];
captionList = [[NSMutableArray alloc] initWithObjects:@"#musicians",@"#dance",@"#girls",@"#bored",@"#guys",@"#ask_questions",@"#random",@"#singing",@"#girl",@"#musical.ly",@"#talk",@"#lgbt",@"#-bored",@"#truthordare",@"#chill",@"#alternative",@"#humor",@"#gaming",@"#sleepingsquad",@"#beauty",@"#advice",@"#advice",@"#youtuber",@"#music",@"#art",@"#hiphop",@"#makeup",@"#pets",@"#dj",@"#parents",@"#cooking", nil];
myTableView.myTable.showsVerticalScrollIndicator = false;
MyTableViewController *videoVC = [self.storyboard instantiateViewControllerWithIdentifier:@"myTableViewController"];
MyTableViewController *peopleVC = [self.storyboard instantiateViewControllerWithIdentifier:@"myTableViewController"];
videoVC.homePage = self;
peopleVC.homePage = self;
peopleVC.AllUsers = _allUsers;
videoVC.array = _Array;
for(int i=0;i<_allUsers.count;i++){
NSDictionary *dict = [NSDictionary dictionaryWithDictionary:_allUsers[i]];
NSString *user = [dict objectForKey:@"Username"];
[Username addObject:user];
}
MyTableViewController *followingVC = [self.storyboard instantiateViewControllerWithIdentifier:@"myTableViewController"];
viewControllersCollection = @[videoVC, peopleVC, followingVC];
videoVC.option = VIDEO;
peopleVC.option = PEOPLE;
followingVC.option = FOLLOWING;
carbonTabSwipeNavigation = [[CarbonTabSwipeNavigation alloc] initWithItems:items delegate:self];
[carbonTabSwipeNavigation insertIntoRootViewController:self];
}
- (void)style {
UIColor *color = [UIColor colorWithRed:82.0 / 255 green:152.0 / 255 blue:252.0 / 255 alpha:1];
carbonTabSwipeNavigation.toolbar.translucent = NO;
[carbonTabSwipeNavigation setIndicatorColor:color];
CGFloat width = self.view.frame.size.width/3;
[carbonTabSwipeNavigation setTabExtraWidth:self.view.frame.size.width/3];
[carbonTabSwipeNavigation.carbonSegmentedControl setWidth:width forSegmentAtIndex:0];
[carbonTabSwipeNavigation.carbonSegmentedControl setWidth:width forSegmentAtIndex:1];
[carbonTabSwipeNavigation.carbonSegmentedControl setWidth:width forSegmentAtIndex:2];
// Custimize segmented control
[carbonTabSwipeNavigation setNormalColor:[color colorWithAlphaComponent:0.6]
font:[UIFont boldSystemFontOfSize:14]];
[carbonTabSwipeNavigation setSelectedColor:color font:[UIFont boldSystemFontOfSize:20]];
}
#pragma mark - CarbonTabSwipeNavigation Delegate
// required
- (nonnull UIViewController *)carbonTabSwipeNavigation:
(nonnull CarbonTabSwipeNavigation *)carbontTabSwipeNavigation
viewControllerAtIndex:(NSUInteger)Index {
return viewControllersCollection[Index];
}
- (void)carbonTabSwipeNavigation:(nonnull CarbonTabSwipeNavigation *)carbonTabSwipenavigation
didMoveAtIndex:(NSUInteger)Index {
selectedViewControllerIndex = Index;
// self.navigationController.navigationBar.barTintColor = [self randomColor];
}
-(void)viewDidLayoutSubviews{
if (UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation)) {
[self style];
}
else{
[self style];
}
}
-(void)viewWillAppear:(BOOL)animated{
[self configureSearchController];
[super viewWillAppear:animated];
carbonTabSwipeNavigation.carbonSegmentedControl.selectedSegmentIndex = selectedViewControllerIndex;
_moreBtn.tintColor = [UIColor whiteColor];
[self.navigationItem setHidesBackButton:YES animated:YES];
self.navigationController.navigationBarHidden = false;
[self style];
}
-(void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
// [carbonTabSwipeNavigation removeFromParentViewController];
}
- (UIBarPosition)barPositionForCarbonTabSwipeNavigation:
(nonnull CarbonTabSwipeNavigation *)carbonTabSwipeNavigation {
return UIBarPositionTop; // default UIBarPositionTop
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
UITouch *t = [touches anyObject];
UIView *v = t.view;
[self.view endEditing:YES];
}
此处我的搜索栏文字更新，但之后我的搜索栏取消按钮隐藏。
-(void)updateSearchResultsForSearchController:(UISearchController *)searchController{
searchText = _searchController.searchBar.text;
_shouldShowSearchResults = true;
_displayItems = [[NSArray alloc]init];
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
if (selectedViewControllerIndex == 0) {
if ([searchText containsString:@"#"] && selectedViewControllerIndex == 0) {
viewControllersCollection[0].hastagFlag = true;
viewControllersCollection[0].searchingFlag = true;
viewControllersCollection[0].nameSearch = false;
_displayItems = captionList;
viewControllersCollection[0].searchingFlag = false;
[viewControllersCollection[selectedViewControllerIndex] setDisplayItems:_displayItems searchResult:_shouldShowSearchResults];
}
else{
viewControllersCollection[0].hastagFlag = false;
viewControllersCollection[0].searchingFlag = true;
viewControllersCollection[0].nameSearch = true;
// NSPredicate *Predicate =
// [NSPredicate predicateWithFormat:@"SELF contains[c] %@",searchText];
if (![searchText isEqualToString:@""]) {
[self search];
}
else{
_displayItems = _Array;
}
viewControllersCollection[0].searchingFlag = false;
[viewControllersCollection[selectedViewControllerIndex] setDisplayItems:_displayItems searchResult:_shouldShowSearchResults];
[viewControllersCollection[0] showData];
}
}
else if(selectedViewControllerIndex == 1){
// [self setSearchBartext:searchText];
viewControllersCollection[1].hastagFlag = false;
viewControllersCollection[1].searchingFlag = true;
viewControllersCollection[1].nameSearch = true;
// NSPredicate *Predicate =
// [NSPredicate predicateWithFormat:@"SELF contains[c] %@",searchText];
if (![searchText isEqualToString:@""]) {
[self searchAllPeople];
}
else{
_displayItems = _allUsers;
}
viewControllersCollection[1].searchingFlag = false;
[viewControllersCollection[selectedViewControllerIndex] setDisplayItems:_displayItems searchResult:_shouldShowSearchResults];
[viewControllersCollection[1] showData];
}
});
}
-(void)search{
dispatch_async(dispatch_get_main_queue(), ^{
[viewControllersCollection[0].act startAnimating];
});
NSString *urlstring = [searchVideos stringByAppendingString:[NSString stringWithFormat:@"searchText=%@&option=live",searchText]];
urlstring = [urlstring stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
NSURL *ur= [[NSURL alloc] initWithString:urlstring];
NSURLRequest * urlRequest = [NSURLRequest requestWithURL:ur];
NSURLResponse * response = nil;
NSError * error = nil;
NSData * data = [NSURLConnection sendSynchronousRequest:urlRequest
returningResponse:&response
error:&error];
// [NSURLConnection sendAsynchronousRequest:[[NSURLRequest alloc] initWithURL:ur] queue:[[NSOperationQueue alloc] init] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
if (error) {
}
else {
[self getSearchedObject:data];
}
}
-(void)searchAllPeople{
dispatch_async(dispatch_get_main_queue(), ^{
[viewControllersCollection[1].act startAnimating];
});
NSString *urlstring = [searchVideos stringByAppendingString:[NSString stringWithFormat:@"searchText=%@&option=AllUsers",searchText]];
urlstring = [urlstring stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
NSURL *ur= [[NSURL alloc] initWithString:urlstring];
NSURLRequest * urlRequest = [NSURLRequest requestWithURL:ur];
NSURLResponse * response = nil;
NSError * error = nil;
NSData * data = [NSURLConnection sendSynchronousRequest:urlRequest
returningResponse:&response
error:&error];
// [NSURLConnection sendAsynchronousRequest:[[NSURLRequest alloc] initWithURL:ur] queue:[[NSOperationQueue alloc] init] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
if (error) {
}
else {
id object = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
searchedArray = [[NSArray alloc]initWithArray:object];
_displayItems = searchedArray;
dispatch_async(dispatch_get_main_queue(), ^{
[viewControllersCollection[1].act stopAnimating];
});
}
}
-(void)getSearchedObject:(NSData*)data{
id object = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
searchedArray = [[NSArray alloc]initWithArray:object];
_displayItems = searchedArray;
dispatch_async(dispatch_get_main_queue(), ^{
[viewControllersCollection[0].act stopAnimating];
});
}
#pragma mark - UISearchControllerDelegate
// Called after the search controller's search bar has agreed to begin editing or when
// 'active' is set to YES.
// If you choose not to present the controller yourself or do not implement this method,
// a default presentation is performed on your behalf.
//
// Implement this method if the default presentation is not adequate for your purposes.
//
- (void)presentSearchController:(UISearchController *)searchController {
}
- (void)willPresentSearchController:(UISearchController *)searchController {
// do something before the search controller is presented
}
- (void)didPresentSearchController:(UISearchController *)searchController {
// do something after the search controller is presented
}
- (void)willDismissSearchController:(UISearchController *)searchController {
// do something before the search controller is dismissed
}
- (void)didDismissSearchController:(UISearchController *)searchController {
// do something after the search controller is dismissed
}
-(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar{
[self.view endEditing:YES];
}
-(void)searchBarCancelButtonClicked:(UISearchBar *)searchBar{
viewControllersCollection[selectedViewControllerIndex].searchingFlag = false;
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
[viewControllersCollection[selectedViewControllerIndex] refreshTable];
});
}
-(void)configureSearchController{
_searchController = [[UISearchController alloc]initWithSearchResultsController:nil];
_searchController.searchBar.delegate = self;
self.definesPresentationContext = YES;
[_searchController.searchBar sizeToFit];
_searchController.searchResultsUpdater = self;
self.searchController.hidesNavigationBarDuringPresentation = false;
_searchController.dimsBackgroundDuringPresentation = false;
[_searchController.searchBar setTintColor:[UIColor whiteColor]];
self.navigationItem.titleView = _searchController.searchBar;
}
-(void)viewDidDisappear:(BOOL)animated{
[super viewDidDisappear:animated];
[_searchController.searchBar removeFromSuperview];
}
-(void)getProfilePic{
NSString* uname = [[NSUserDefaults standardUserDefaults]stringForKey:@"Username"];
NSString* filename = [NSString stringWithFormat:@"%@_profile.png",uname];
NSString *filePath = [self documentsPathForFileName:filename]; //
BOOL fileExist = [[NSFileManager defaultManager]fileExistsAtPath:filePath];
if (fileExist) {
NSData *imageData = [NSData dataWithContentsOfFile:filePath];
UIImage *profileImage = [UIImage imageWithData:imageData];
}
else{
UIImage *imageProfile = [UIImage imageNamed:@"profile"];
NSData* pngData = UIImagePNGRepresentation(imageProfile);
[pngData writeToFile:filePath atomically:YES]; //Write the file
}
}
- (NSString *)documentsPathForFileName:(NSString *)name
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
NSString *documentsPath = [paths objectAtIndex:0];
return [documentsPath stringByAppendingPathComponent:name];
}
-(void)setSearchBartext:(NSString *)searchTExt{
if (viewControllersCollection[0].hastagFlag) {
dispatch_async(dispatch_get_main_queue(), ^{
_searchController.searchBar.text = searchTExt;
});
}
else{
_searchController.searchBar.text = searchTExt;
}
}
-(void)endSearching:(BOOL)searchingflag{
if (searchingflag == true) {
self.searchController.searchBar.showsCancelButton = false;
}
}
@end