IOS TableView详解
一、建立 UITableView
DataTable = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, 320, 420)]; [DataTable setDelegate:self]; [DataTable setDataSource:self]; [self.view addSubview:DataTable]; [DataTable release];
二、UITableView各Method说明
//Section总数 - (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView{ return TitleData; } // Section Titles //每个section显示的标题 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{ return @""; } //指定有多少个分区(Section),默认为1 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return 4; } //指定每个分区中有多少行,默认为1 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{ } //绘制Cell -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *SimpleTableIdentifier = @"SimpleTableIdentifier"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier: SimpleTableIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier: SimpleTableIdentifier] autorelease]; } cell.imageView.image=image;//未选cell时的图片 cell.imageView.highlightedImage=highlightImage;//选中cell后的图片 cell.text=//..... return cell; } //行缩进 -(NSInteger)tableView:(UITableView *)tableView indentationLevelForRowAtIndexPath:(NSIndexPath *)indexPath{ NSUInteger row = [indexPath row]; return row; } //改变行的高度 - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{ return 40; } //定位 [TopicsTable setContentOffset:CGPointMake(0, promiseNum * 44 + Chapter * 20)]; //返回当前所选cell NSIndexPath *ip = [NSIndexPath indexPathForRow:row inSection:section]; [TopicsTable selectRowAtIndexPath:ip animated:YES scrollPosition:UITableViewScrollPositionNone]; [tableView setSeparatorStyle:UITableViewCellSelectionStyleNone]; //选中Cell响应事件 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{ [tableView deselectRowAtIndexPath:indexPath animated:YES];//选中后的反显颜色即刻消失 } //判断选中的行(阻止选中第一行) -(NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath { NSUInteger row = [indexPath row]; if (row == 0) return nil; return indexPath; } //划动cell是否出现del按钮 - (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath { } //编辑状态 - (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { } [topicsTable setContentSize:CGSizeMake(0,controller.promiseNum * 44)]; //右侧添加一个索引表 - (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView{ } //返回Section标题内容 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{ } //自定义划动时del按钮内容 - (NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath //跳到指的row or section [tableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0] atScrollPosition:UITableViewScrollPositionBottom animated:NO];
三、在UITableViewCell上建立UILable多行显示
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease]; UILabel *Datalabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 0, 320, 44)]; [Datalabel setTag:100]; Datalabel.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; [cell.contentView addSubview:Datalabel]; [Datalabel release]; } UILabel *Datalabel = (UILabel *)[cell.contentView viewWithTag:100]; [Datalabel setFont:[UIFont boldSystemFontOfSize:18]]; Datalabel.text = [data.DataArray objectAtIndex:indexPath.row]; cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; return cell; } //选中cell时的颜色 typedef enum { UITableViewCellSelectionStyleNone, UITableViewCellSelectionStyleBlue, UITableViewCellSelectionStyleGray } UITableViewCellSelectionStyle //cell右边按钮格式 typedef enum { UITableViewCellAccessoryNone, // don't show any accessory view UITableViewCellAccessoryDisclosureIndicator, // regular chevron. doesn't track UITableViewCellAccessoryDetailDisclosureButton, // blue button w/ chevron. tracks UITableViewCellAccessoryCheckmark // checkmark. doesn't track } UITableViewCellAccessoryType //是否加换行线 typedef enum { UITableViewCellSeparatorStyleNone, UITableViewCellSeparatorStyleSingleLine } UITableViewCellSeparatorStyle//改变换行线颜色 tableView.separatorColor = [UIColor blueColor];