消息收藏,收藏控制器当结果集重用

业务思路： 客户端调用Java接口把消息id,收藏时间传给后台APIWeb服务器，后端和 IM 服务器通讯，拿到真正收藏的消息StoreBody 进行存储。

收藏：
APIWeb服务器业务收藏成功，返回相关收藏id给客户端。进行存储到表中。

删除：
客户端根据收藏id调用java接口成功后将收藏记录移除。

同步数据：
每次打开个人中心的收藏页面，请求接口进行数据同步，服务器存储时间戳和数条记录，客户端拿到数据后进行循环处理每条记录，根据收藏id，收藏时间，删除标记来决定是否将该记录进行插入到本地收藏表中。

为了使搜索的结果控制器直接重用收藏的控制器。封装了类似EHMyStoreBaseResultsController的result控制器来进行显示。 收藏的基类EHMyStoreBaseController 持有displayController 即为该类型。
同时，该StoreBaseController实现了GYContainerSearchResultsDelegate协议。如下：记录搜索关键字。

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- (void)beginStoreSearchByKeyWords:(NSString *)searchStr
{
    _historySearchStr = searchStr;
}

• h 文件

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@protocol GYContainerSearchResultsDelegate <NSObject>
//点击搜索，去查询数据库记录
- (void)beginStoreSearchByKeyWords:(NSString *)searchStr;

@end

@interface EHMyStoreBaseResultsController : GYContainerSearchResultsController
- (instancetype)initWithWrapStoreBaseControllerName:(NSString *)baseChildControllerName withOwerViewController:(EHMyStoreBaseController *)storeChildVC;
@end

• m文件

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@interface EHMyStoreBaseResultsController()
@property(strong,nonatomic) EHMyStoreBaseController *childStoreVc; //EHMyStoreBaseController子类的搜索结果集展示类
@property(strong,nonatomic) EHMyStoreBaseController *owerStoreVc; //EHMyStoreBaseController的子类。
@end

@implementation EHMyStoreBaseResultsController

- (instancetype)initWithWrapStoreBaseControllerName:(NSString *)baseChildControllerName withOwerViewController:(EHMyStoreBaseController *)storeChildVC
{
    if(self = [super initWithWrapStoreBaseControllerName:baseChildControllerName]) {

        _owerStoreVc = storeChildVC;
    }
    return self;

}

-(void)viewDidLoad
{
    [super viewDidLoad];

    _childStoreVc = [[NSClassFromString(self.baseChildControllerName) alloc] init];
    _childStoreVc.withoutSearchFlag = YES; //不需要搜索条
    _childStoreVc.markSearchResultFlag = YES; //标记在搜索页： 需要把顶部收藏分类去掉
    [self addChildViewController:_childStoreVc];

    [self.view addSubview:_childStoreVc.view];
    [_childStoreVc.view mas_remakeConstraints:^(MASConstraintMaker *make) {
        make.left.right.bottom.mas_equalTo(0);
        make.top.mas_equalTo((self.searchBar.frame.size.height + STATUSBAR_HEIGHT ));
    }];
}


#pragma mark------UISearchBarDelegate-----
-(BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar {
    if([self.owerStoreVc respondsToSelector:@selector(cancelMulEditStatus)]){
        [self.owerStoreVc cancelMulEditStatus];
    }
    return YES;
}

- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
    NSLog(@"%s", __FUNCTION__);
    self.searchStr = [StringUtil trimString:searchBar.text];
    [self setSearchResultsTitle:nil];//先不显示一下

    if([self.searchStr length] == 0 || [self.searchStr length] == 1) {
        [self setSearchResultsTitle:@"收藏搜索的空文字提示"];
    }else {
        [self setSearchResultsTitle:nil];
    }
    [[self class] cancelPreviousPerformRequestsWithTarget:self selector:@selector(searchHandle) object:nil];
    [self performSelector:@selector(searchHandle) withObject:nil afterDelay:0.2f];
}

//真正触发搜索的这一方法
- (void)searchHandle {
    [super searchHandle];
    if([self.childStoreVc respondsToSelector:@selector(beginStoreSearchByKeyWords:)]){
        [self.childStoreVc beginStoreSearchByKeyWords:self.searchStr];
    }
}

#pragma mark - UISearchResultsUpdating
//每输入一个字符都会执行一次
- (void)updateSearchResultsForSearchController:(UISearchController *)searchController{
//    NSLog(@"搜索关键字：%@",searchController.searchBar.text);
    //放在presentSearchController不生效，因此暂定放在此处
}

// 当用户在搜索控制器中开始编辑时或者将active属性设置为YES时，该方法被调用
- (void)presentSearchController:(UISearchController *)searchController{
    [self setSearchResultsTitle:@"收藏搜索的空文字提示"];//设置一开始的提示语
    self.searchStr = [StringUtil trimString:self.searchBar.text];
    //清空搜索表格的数据

}

@end

分割线

EHMyStoreBaseResultsController: GYContainerSearchResultsController

• GYSearchController 文件

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  @interface GYSearchController : UISearchController @end #define SCREEN_MAX_LENGTH (MAX(SCREEN_WIDTH, SCREEN_HEIGHT)) #define kIS_IPHONE_X (IS_IPHONE && SCREEN_MAX_LENGTH == 812.0) @interface GYSearchController () @end @implementation GYSearchController - (void)viewDidLoad { NSLog(@"viewDidLoad"); [super viewDidLoad]; [self add_imageBg]; } - (void)viewWillAppear:(BOOL)animated { NSLog(@""); [super viewWillAppear:animated]; } #pragma mark - -(void)viewDidLayoutSubviews { NSLog(@"viewDidLayoutSubviews"); [self setSomeFrame]; [super viewDidLayoutSubviews]; [self setSomeFrame]; } -(void)viewWillLayoutSubviews { NSLog(@"viewWillLayoutSubviews"); [self setSomeFrame]; [super viewWillLayoutSubviews]; [self setSomeFrame]; } - (void) setSomeFrame { if(kIS_IPHONE_X){ if(1){//searBar内部背景修正 if (@available(iOS 11.0, *)) { CGRect rect = [[self.searchBar subviews][0] subviews][0].frame; if(self.isActive){ CGFloat statusHeight = [[UIApplication sharedApplication] statusBarFrame].size.height; rect.origin.y = - statusHeight; rect.size.height = self.searchBar.bounds.size.height; [[self.searchBar subviews][0] subviews][0].frame = rect; } } } } } //添加图片的方式 - (void)add_imageBg { UIImageView *imageBg = ({ UIImageView *iv = (UIImageView*)[self.view viewWithTag:999]; if(!iv){ UIColor *searchBarBgColor = [UIColor colorWithRed:242.0/255.0 green:242.0/255.0 blue:242.0/255.0 alpha:1.0]; CGFloat statusHeight = [[UIApplication sharedApplication] statusBarFrame].size.height; iv = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, statusHeight+self.searchBar.frame.size.height-1)];//后面-1是因为iphoneX实际调试为99=44+56-1 iv.backgroundColor = [UIColor redColor]; iv.backgroundColor = searchBarBgColor; iv.tag = 999; [self.view addSubview:iv]; } iv; }); imageBg.hidden = NO; } @end

• GYContainerSearchResultsController 文件

• h文件

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  #define IS_IOS11 ([[[UIDevice currentDevice]systemVersion]floatValue] >= 11.0)?YES:NO //是否iOS11及以后 #define kSearchBarHeight ((IS_IOS11)? 56.0f:44.0f) ///为UISearchController的searchResultsController对象 @interface GYContainerSearchResultsController : UIViewController @property(nonatomic,readonly) NSString *baseChildControllerName; - (instancetype)initWithWrapStoreBaseControllerName:(NSString *)baseChildControllerName; /** 搜索的searchController */ @property(nonatomic, strong) UISearchController *searchController; /** 是否激活搜索状态中：注意新旧两版不同细节情况；特别旧版在WillEnd开始就为NO了 */ @property(nonatomic, assign) BOOL isActive; /** 搜索的searchBar */ @property(nonatomic, strong) UISearchBar *searchBar; /** 搜索的搜索字串 */ @property (nonatomic,strong) NSString *searchStr; /** 当前Search的上级宿主viewController (一般为self.searchController的nextResponder,只有在搜索框显示出来时才可使用!!!) */ @property(nonatomic, weak) UIViewController *hostViewController; @property(nonatomic, strong) NSString *defaultTipStr; #pragma mark - UISearchControllerDelegate的几个回调block======================== @property(nonatomic, copy) void(^willPresentSearchControllerBlock)(GYContainerSearchResultsController *searchResultsController); @property(nonatomic, copy) void(^didPresentSearchControllerBlock)(GYContainerSearchResultsController *searchResultsController); @property(nonatomic, copy) void(^willDismissSearchControllerBlock)(GYContainerSearchResultsController *searchResultsController); @property(nonatomic, copy) void(^didDismissSearchControllerBlock)(GYContainerSearchResultsController *searchResultsController); #pragma mark - UISearchController辅助初始化方法=================================== /** 上级viewController初始化一些设置 @param viewController 传入待处理的vc */ + (void)viewController_viewDidLoad_someSetting:(UIViewController*)viewController; /** 初始化设置searchBar */ - (void)initSearchBar; -(void)viewController_viewDidLayoutSubviews:(UITableView *)tableView hostViewController:(UIViewController*)hostViewController bottomMargin:(CGFloat)bottomMargin; @end #pragma mark - UISearchBarDelegate-暴露出子类可以重写的方法名====================== @interface GYContainerSearchResultsController(GY_UISearchBarDelegate) -(BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar; - (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText; - (void)searchHandle; - (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar; - (void)setSearchResultsTitle:(NSString *)title; - (void)showSearchTip:(NSString *)title; @end

• m文件

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  #define SCREEN_MAX_LENGTH (MAX(SCREEN_WIDTH, SCREEN_HEIGHT)) #define kIS_IPHONE_X (IS_IPHONE && SCREEN_MAX_LENGTH == 812.0) @interface GYContainerSearchResultsController ()<UISearchResultsUpdating, UISearchControllerDelegate, UISearchBarDelegate > @property (nonatomic, strong) UILabel *emptyTipsLabel; @property (nonatomic, strong) UILabel *defaultTipsLabel; @end @implementation GYContainerSearchResultsController - (UIViewController *)hostViewController { if (_hostViewController==nil) { UIResponder *nextResponder = [self.searchController nextResponder]; if ([nextResponder isKindOfClass:[UIViewController class]]) { _hostViewController = (UIViewController *)nextResponder; } } return _hostViewController; } - (BOOL)isActive { return self.searchController.active; } - (instancetype)initWithWrapStoreBaseControllerName:(NSString *)baseChildControllerName { if(self = [super init]) { _baseChildControllerName = baseChildControllerName; //初始化设置searchBar [self initSearchBar]; } return self; } - (void)viewDidLoad { [super viewDidLoad]; if(_emptyTipsLabel == nil){ _emptyTipsLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 30, SCREEN_WIDTH, 30)]; _emptyTipsLabel.font = [UIFont systemFontOfSize:20.0f]; _emptyTipsLabel.textColor = [UIColor colorWithRed:202.0/255.0 green:202.0/255.0 blue:202.0/255.0 alpha:1.0]; _emptyTipsLabel.textAlignment = NSTextAlignmentCenter; [self.view addSubview:_emptyTipsLabel]; } } - (UILabel *)defaultTipsLabel{ if (_defaultTipsLabel == nil) { UILabel *lab = [UILabel new]; lab.textColor = KUIColorFromRGB(0x417FF8); lab.font = [UIFont systemFontOfSize:17]; _defaultTipsLabel = lab; _defaultTipsLabel.hidden = YES; [self.searchController.searchBar addSubview:_defaultTipsLabel]; } return _defaultTipsLabel; } #pragma mark - UISearchResultsUpdating - (void)updateSearchResultsForSearchController:(UISearchController *)searchController { NSLog(@"updateSearchResultsForSearchController->inputStr==%@",searchController.searchBar.text); } #pragma mark - UISearchControllerDelegate代理 - (void)willPresentSearchController:(UISearchController *)searchController { NSLog(@"willPresentSearchController"); if (self.defaultTipStr.length) { self.defaultTipsLabel.hidden = NO; float w = [self.defaultTipStr boundingRectWithSize:CGSizeMake(MAXFLOAT, 30) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[UIFont boldSystemFontOfSize:17]} context:nil].size.width + 10; self.defaultTipsLabel.text = self.defaultTipStr; self.defaultTipsLabel.frame = CGRectMake(40, 5, w, self.searchBar.bounds.size.height - 10); self.searchBar.searchTextPositionAdjustment = UIOffsetMake(w, 0); self.searchBar.placeholder = @""; }else{ self.defaultTipsLabel.hidden = YES; self.searchBar.searchTextPositionAdjustment = UIOffsetMake(0, 0); [self.searchBar changeLeftPlaceholder:[StringUtil getLocalizableString:@"chats_search"]]; } !self.willPresentSearchControllerBlock?:self.willPresentSearchControllerBlock(self); } - (void)didPresentSearchController:(UISearchController *)searchController { NSLog(@"didPresentSearchController"); !self.didPresentSearchControllerBlock?:self.didPresentSearchControllerBlock(self); } - (void)willDismissSearchController:(UISearchController *)searchController { [self.navigationController setNavigationBarHidden:NO animated:NO]; [self.navigationController.view layoutIfNeeded]; self.defaultTipsLabel.hidden = YES; self.searchBar.searchTextPositionAdjustment = UIOffsetMake(0, 0); [self.searchBar changeLeftPlaceholder:[StringUtil getLocalizableString:@"chats_search"]]; !self.willDismissSearchControllerBlock?:self.willDismissSearchControllerBlock(self); } - (void)didDismissSearchController:(UISearchController *)searchController { NSLog(@"didDismissSearchController"); !self.didDismissSearchControllerBlock?:self.didDismissSearchControllerBlock(self); } - (void)presentSearchController:(UISearchController *)searchController { NSLog(@"presentSearchController"); } #pragma mark------UISearchBarDelegate----- -(BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar { NSLog(@"searchBarShouldBeginEditing"); return YES; } - (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText { NSLog(@"%s", __FUNCTION__); self.searchStr = [StringUtil trimString:searchBar.text]; [self setSearchResultsTitle:nil]; if([self.searchStr length] == 0) { } else if ([self.searchStr length] == 1) { [self setSearchResultsTitle:[StringUtil getLocalizableString:@"search_tip"]]; } else { [[self class] cancelPreviousPerformRequestsWithTarget:self selector:@selector(searchHandle) object:nil]; [self performSelector:@selector(searchHandle) withObject:nil afterDelay:0.2f]; } } - (void)searchHandle { NSLog(@"开始去搜索。。。。"); } - (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar { if ([self.searchStr length] < 1) { return; } //去除焦点收键盘 [searchBar resignFirstResponder]; //搜索提示 [[LCLLoadingView currentIndicator] setCenterMessage:[StringUtil getLocalizableString:@"searching"]]; [[LCLLoadingView currentIndicator] show]; //再搜索 [self searchHandle]; } //搜索提示文字 - (void)setSearchResultsTitle:(NSString *)title { if(title==nil){ _emptyTipsLabel.hidden = YES; }else{ _emptyTipsLabel.hidden = NO; _emptyTipsLabel.text = [NSString stringWithFormat:@"%@", title]; } } //alert - (void)showSearchTip:(NSString *)title { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title message:@"" delegate:nil cancelButtonTitle:[StringUtil getLocalizableString:@"confirm"] otherButtonTitles: nil]; [alert show]; } #pragma mark - UISearchController辅助初始化方法=================================== #pragma mark - 上级viewController初始化一些设置 + (void)viewController_viewDidLoad_someSetting:(UIViewController*)viewController { UIViewController *_self = viewController; //#warning 如果进入预编辑状态,searchBar消失(UISearchController套到�TabBarController可能会出现这个情况),请添加下边这句话 _self.definesPresentationContext=YES; if (@available(iOS 11.0, *)) { } else { _self.automaticallyAdjustsScrollViewInsets = NO; } //适配ios7UIViewController的变化 if ([_self respondsToSelector:@selector(extendedLayoutIncludesOpaqueBars)]) { _self.extendedLayoutIncludesOpaqueBars = NO; } _self.edgesForExtendedLayout = UIRectEdgeAll; //第三种方式开关 [_self setAutomaticallyAdjustsScrollViewInsets:YES]; [_self setExtendedLayoutIncludesOpaqueBars:YES]; _self.edgesForExtendedLayout = UIRectEdgeNone; _self.edgesForExtendedLayout = UIRectEdgeBottom | UIRectEdgeLeft | UIRectEdgeRight; } #pragma mark - 初始化设置searchBar - (void)initSearchBar { // 创建用于展示搜索结果的控制器 GYContainerSearchResultsController *result = self; self.searchController = ({ UISearchController *_searchController = [[GYSearchController alloc] initWithSearchResultsController:result]; _searchController.delegate = self; _searchController.searchResultsUpdater = result; _searchController.dimsBackgroundDuringPresentation = YES;//取消蒙版 _searchController.obscuresBackgroundDuringPresentation = NO;//搜索时，背景变模糊 _searchController.hidesNavigationBarDuringPresentation = YES;//点击搜索的时候,是否隐藏导航栏 _searchController; }); self.searchBar = self.searchController.searchBar; [self.searchBar changeLeftPlaceholder:[StringUtil getLocalizableString:@"chats_search"]]; self.searchBar.delegate = self; [self.searchBar setBackgroundImage:[self imageWithColor:KUIColorFromRGB(0xF5F5F5) size:self.searchBar.bounds.size]]; UIImage *image = [self imageWithColor:KUIColorFromRGB(0xffffff) size:CGSizeMake(self.searchBar.bounds.size.width, self.searchBar.bounds.size.height - 20)]; image = [self rh_bezierPathClip:image cornerRadius:8]; [_searchBar setSearchFieldBackgroundImage:image forState:UIControlStateNormal]; } - (UIImage *)rh_bezierPathClip:(UIImage *)img cornerRadius:(CGFloat)cornerRadius { int w = img.size.width * img.scale; int h = img.size.height * img.scale; CGRect rect = (CGRect){CGPointZero, CGSizeMake(w, h)}; UIGraphicsBeginImageContextWithOptions(CGSizeMake(w, h), false, 1.0); [[UIBezierPath bezierPathWithRoundedRect:rect cornerRadius:cornerRadius] addClip]; [img drawInRect:rect]; UIImage *cornerImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return cornerImage; } - (UIImage *)imageWithColor:(UIColor *)color size:(CGSize)size{ CGRect rect = CGRectMake(0, 0, size.width, size.height); UIGraphicsBeginImageContext(rect.size); CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSetFillColorWithColor(context, [color CGColor]); CGContextFillRect(context, rect); UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return image; } #pragma mark -上级viewController辅助方法 -(void)viewController_viewDidLayoutSubviews:(UITableView *)tableView hostViewController:(UIViewController*)hostViewController bottomMargin:(CGFloat)bottomMargin{ //调节宿主tableView CGRect tableViewAdjustRect = CGRectZero; if(self.isActive) { CGFloat y = [[UIApplication sharedApplication] statusBarFrame].size.height+self.searchBar.frame.size.height; y = (!kIS_IPHONE_X)?y:(y-1);//iphonex时搜索部分的高度为99=44+56-1； CGFloat height = SCREEN_HEIGHT-y; UINavigationController *nav = hostViewController.navigationController; if(nav && nav.viewControllers[0] == hostViewController && [nav nextResponder] &&([[nav nextResponder] isKindOfClass:[UITabBarController class]]//ios11 ||[[[[nav nextResponder] nextResponder] nextResponder] nextResponder]//ios10 ) ){//在tabarController里且为其导航根vc时，要减去下面的tabBar下面高度 height = SCREEN_HEIGHT-y-TABBAR_HEIGHT-safeAreaXBottom; } tableViewAdjustRect = CGRectMake(0, y, SCREEN_WIDTH, height); }else { CGFloat y = self.searchBar.frame.size.height; CGFloat height = SCREEN_HEIGHT-NAVIGATIONBAR_HEIGHT-STATUSBAR_HEIGHT-y;//-safeAreaXBottom; UINavigationController *nav = hostViewController.navigationController; if(nav && nav.viewControllers[0] == hostViewController && [nav nextResponder] &&([[nav nextResponder] isKindOfClass:[UITabBarController class]]//ios11 ||[[[[nav nextResponder] nextResponder] nextResponder] nextResponder]//ios10 ) ){ height = SCREEN_HEIGHT-NAVIGATIONBAR_HEIGHT-STATUSBAR_HEIGHT-self.searchBar.frame.size.height-TABBAR_HEIGHT-safeAreaXBottom; } tableViewAdjustRect = CGRectMake(0, y, SCREEN_WIDTH, height); } if (bottomMargin > 0) { CGRect rect = tableViewAdjustRect; CGFloat h = rect.size.height - bottomMargin; if ((UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) && ([UIScreen mainScreen].bounds.size.width >= 375) && ([UIScreen mainScreen].bounds.size.height >= 812)) { h -= 34; } tableView.frame = CGRectMake(rect.origin.x, rect.origin.y, rect.size.width,h); }else{ tableView.frame = tableViewAdjustRect; } }