iOS开发之UITableView与UISearchController实现搜索及上拉加载,下拉刷新实例代码
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2023-11-28 23:10:52
废话不多说了,直接给大家贴代码了。
具体代码如下所示:
#import "viewcontroller.h"
#import "tuangoumodel.h"...
废话不多说了,直接给大家贴代码了。
具体代码如下所示:
#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); }
以上代码是hi小编给大家介绍的ios开发之uitableview与uisearchcontroller实现搜索及上拉加载,下拉刷新实例代码,希望对大家有所帮助!
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