IOS TableView详解

Posted 2020-06-14

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];