iOS开发之UITableView与UISearchController实现搜索及上拉加载，下拉刷新实例代码

#import "ViewController.h"#import "TuanGouModel.h"#import "TuanGouTableViewCell.h"#define kDeviceWidth [UIScreen mainScreen].bounds.size.width#define kDeviceHeight [UIScreen mainScreen].bounds.size.height@interface ViewController ()<UITableViewDelegate,UITableViewDataSource,UISearchResultsUpdating>{UISearchController * _sscller;}@property(nonatomic,strong)NSMutableArray* secArrM;@property(nonatomic,strong) NSMutableArray* tuanGouArrM;@property(nonatomic,strong)UITableView* myTable;@end@implementation ViewController- (void)viewDidLoad {[super viewDidLoad];[self createNa];self.myTable.backgroundColor = [UIColor lightGrayColor];[self createsecB];[self setupRefresh];self.title = @"美食家";}#pragma mark - 导航-(void)createNa{UIBarButtonItem *rightItem = [[UIBarButtonItem alloc]initWithTitle:@"Edit" style:UIBarButtonItemStylePlain target:self action:@selector(tableEdit:)];self.navigationItem.rightBarButtonItem = rightItem;self.title = @"美食家";}// 点击导航右侧编辑按钮时，让表格可编辑-(void)tableEdit:(UIBarButtonItem *) btnItem{// if (self.myTable.editing == NO ) { // 没有处于编辑状态，导航按钮文字为“Edit”// // 点击“编辑”文字，让表格处于编辑状态，并把按钮的文字修改为“Done"// self.myTable.editing = YES;// // }else{// // 编辑状态下，点击”Done"按钮，取消表格的编辑状态，修改导航按钮文字为"Edit"// self.myTable.editing = NO;// btnItem.title = @"Edit" ;// self.navigationItem.rightBarButtonItems = @[btnItem];// }}-(void)createsecB{_sscller = [[UISearchController alloc]initWithSearchResultsController:nil];_sscller.searchResultsUpdater = self;self.myTable.tableHeaderView = _sscller.searchBar;}-(NSMutableArray *)secArrM{if (_secArrM == nil) {return _secArrM = [NSMutableArray array];}else{return _secArrM;}}- (void)didReceiveMemoryWarning {[super didReceiveMemoryWarning];}#pragma mark - 表格懒加载-(UITableView *)myTable{if (_myTable == nil) {_myTable = [[UITableView alloc]initWithFrame:CGRectMake(, , kDeviceWidth, kDeviceHeight) style:UITableViewStylePlain];[self.view addSubview:_myTable];_myTable.delegate = self;_myTable.dataSource = self;_myTable .separatorStyle = UITableViewCellSeparatorStyleSingleLineEtched;}return _myTable;}#pragma mark - 团购数据懒加载-(NSMutableArray *)tuanGouArrM{if (_tuanGouArrM == nil) {_tuanGouArrM = [NSMutableArray array];NSString* plistPath = [[NSBundle mainBundle]pathForResource:@"tgs.plist" ofType:nil];NSArray* tuanArr = [NSArray arrayWithContentsOfFile:plistPath];for (NSDictionary* dict in tuanArr) {TuanGouModel* model =[[TuanGouModel alloc]initWithDict:dict];[_tuanGouArrM addObject:model];}}return _tuanGouArrM;}#pragma mark - 数据源协议-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{if ( _sscller.active ) { //搜索结果表格return self.secArrM.count;}else{return self.tuanGouArrM.count;}}-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{//注册[tableView registerClass:[TuanGouTableViewCell class] forCellReuseIdentifier:@"tuanCell"];//重置TuanGouTableViewCell* cell = [tableView dequeueReusableCellWithIdentifier:@"tuanCell"forIndexPath:indexPath];cell.backgroundColor = [UIColor yellowColor];// 选中风格cell.selectionStyle = UITableViewCellSelectionStyleNone;if( !_sscller.active ){cell.tuanGouModel = self.tuanGouArrM[indexPath.row];}else{ //搜索结果cell.tuanGouModel = self.secArrM[indexPath.row];}return cell;}#pragma mark - TableV协议-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{return ;}-(void)updateSearchResultsForSearchController:(UISearchController *)searchController{[self.secArrM removeAllObjects];for (int j = ; j < _tuanGouArrM.count; j++) {TuanGouModel* model =[[TuanGouModel alloc]init];model = _tuanGouArrM[j];if ([model.title isEqualToString: _sscller.searchBar.text]) {[self.secArrM addObject: model];}}[self.myTable reloadData];}//允许Menu菜单-(BOOL)tableView:(UITableView *)tableView shouldShowMenuForRowAtIndexPath:(NSIndexPath *)indexPath{return YES;}//每个cell都可以点击出现Menu菜单-(BOOL)tableView:(UITableView *)tableView canPerformAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender{return YES;}-(void)tableView:(UITableView *)tableView performAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender{NSLog(@"长按");if (action ==@selector(copy:)) {NSLog(@"copy");}if (action ==@selector(cut:)) {NSLog(@"cut");}if (action ==@selector(paste:)) {NSLog(@"paste");}if (action ==@selector(selectAll:)) {NSLog(@"selectAll");}}//上拉加载-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{if (indexPath.row == self.tuanGouArrM.count - ) {NSLog(@"最后一行");TuanGouModel* model =[[TuanGouModel alloc]init];model = _tuanGouArrM[arcrandom()%];[_tuanGouArrM addObject:model];[self.myTable reloadData];}}//下拉刷新-(void)setupRefresh{//.添加刷新控件UIRefreshControl *control=[[UIRefreshControl alloc]init];[control addTarget:self action:@selector(refreshStateChange:) forControlEvents:UIControlEventValueChanged];[self.myTable addSubview:control];//.马上进入刷新状态，并不会触发UIControlEventValueChanged事件[control beginRefreshing];// .加载数据[self refreshStateChange:control];}/*** UIRefreshControl进入刷新状态：加载最新的数据*/-(void)refreshStateChange:(UIRefreshControl *)control{TuanGouModel* model =[[TuanGouModel alloc]init];model = _tuanGouArrM[arcrandom()%];[_tuanGouArrM insertObject:model atIndex:];[self.myTable reloadData];NSLog(@"第一行");[control endRefreshing];}//指示是否允许高亮显示选中的行- (BOOL)tableView:(UITableView *)tableView shouldHighlightRowAtIndexPath:(NSIndexPath *)indexPath{return YES;}//选中某行时执行- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{NSLog(@"selected: %ld, row:%ld", indexPath.section, indexPath.row);}//取消选中时执行，这个方法常在表格允许多选时调用执行- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath{NSLog(@"Deselected: %ld, row:%ld", indexPath.section, indexPath.row);}