ios UITableViewController

一、表视图的组成
 二、表视图类型
 三、cell 的相关样式
 四、数据源协议 UITableViewDataSource
五、委托协议 UITableViewDelegate
六、自定义cell
七、搜索栏
 八、cell 插入删除
 九、cell 移动
 十、分页模式
 十一、下拉刷新
PS：添加的锚点貌似不好使

一、表视图的组成

表头视图（table header view） 表示图最上边
表脚视图（table footer view） 表示图最下边
单元格（cell） 组成表示图每一行的单位视图
节（section） 有多个单元格组成，有节头（左对齐）和节脚（左对齐），一般节头描述节的信息，节脚描述节的信息和声明

二、表视图类型

UITableView 创建时

- initWithFrame:(CGRect) style:(UITableViewStyle)

UITableViewController 创建时

- initWithStyle:(UITableViewStyle)

UITableViewStyle 有两种样式

UITableViewStylePlain 普通表视图，一般用于动态表，单元格数目未知
UITableViewStyleGrouped 分组表视图，一般用于静态表，以孤岛进行界面布局，同时也用于控件的界面布局

三、cell 的相关样式

一般通过以下方式创建

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    static NSString *cellIdentifier = @"CellIdentifier";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
    
    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
    }
    
    NSInteger row = [indexPath row];
    cell.textLabel.text = self.listData[row];
    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
    
    return cell;
}

cell类型

UITableViewCellStyleDefault 默认样式，只有图标和主标题
UITableViewCellStyleSubtitle Subtitle样式，图标、主标题、副标题（位于主标题下方）
UITableViewCellStyleValue1 Value1样式，主标题和副标题，主标题左对齐，副标题右对齐，图标可有可无
UITableViewCellStyleValue2 Value2样式，主标题和副标题，两者居中对齐，无图标

cell扩展视图类型

  cell.accessoryType = UITableViewCellAccessoryType；

UITableViewCellAccessoryNone 没有扩展图标
UITableViewCellAccessoryDisclosureIndicator 扩展指示器，触摸该图标将切换到下一级表视图，图标为">"
UITableViewCellAccessoryDetailDisclosureButton 细节展示按钮，触摸该单元格时，表视图会以视图的方式显示当前单元格的更多详细信息，图标为“ⓘ”
UITableViewCellAccessoryCheckmark 选中标志，表示该行被选中，图标为“✔️”

四、数据源协议 UITableViewDataSource

//为表视图单元格提供数据，必须实现
@protocol UITableViewDataSource

@required
//返回某个节点中的行数
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section;
//为表视图单元格提供数据
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;

@optional
//返回节的个数
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView;   
//返回节头标题           
- (nullable NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section;   
//返回节脚标题
- (nullable NSString *)tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section;

//Individual rows can opt out of having the -editing property set for them. If not implemented, all rows are assumed to be editable.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath;

// Moving/reordering
// Allows the reorder accessory view to optionally be shown for a particular row. By default, the reorder control will be shown only if the datasource implements -tableView:moveRowAtIndexPath:toIndexPath:
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath;

//提供表视图节索引标题
- (nullable NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView __TVOS_PROHIBITED;   

// tell table which section corresponds to section title/index (e.g. "B",1))                                               
- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index __TVOS_PROHIBITED;  

//为删除修改提供数据
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath;
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath;

@end

五、委托协议 UITableViewDelegate

@protocol UITableViewDelegate

@optional

// Display customization

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath;
- (void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section NS_AVAILABLE_IOS(6_0);
- (void)tableView:(UITableView *)tableView willDisplayFooterView:(UIView *)view forSection:(NSInteger)section NS_AVAILABLE_IOS(6_0);
- (void)tableView:(UITableView *)tableView didEndDisplayingCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath*)indexPath NS_AVAILABLE_IOS(6_0);
- (void)tableView:(UITableView *)tableView didEndDisplayingHeaderView:(UIView *)view forSection:(NSInteger)section NS_AVAILABLE_IOS(6_0);
- (void)tableView:(UITableView *)tableView didEndDisplayingFooterView:(UIView *)view forSection:(NSInteger)section NS_AVAILABLE_IOS(6_0);

// Variable height support

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath;
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section;
- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section;

// Use the estimatedHeight methods to quickly calcuate guessed values which will allow for fast load times of the table.
// If these methods are implemented, the above -tableView:heightForXXX calls will be deferred until views are ready to be displayed, so more expensive logic can be placed there.
- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(7_0);
- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForHeaderInSection:(NSInteger)section NS_AVAILABLE_IOS(7_0);
- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForFooterInSection:(NSInteger)section NS_AVAILABLE_IOS(7_0);

// Section header & footer information. Views are preferred over title should you decide to provide both

- (nullable UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section;   // custom view for header. will be adjusted to default or specified header height
- (nullable UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section;   // custom view for footer. will be adjusted to default or specified footer height

// Accessories (disclosures). 

- (UITableViewCellAccessoryType)tableView:(UITableView *)tableView accessoryTypeForRowWithIndexPath:(NSIndexPath *)indexPath NS_DEPRECATED_IOS(2_0, 3_0) __TVOS_PROHIBITED;
- (void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath;

// Selection

// -tableView:shouldHighlightRowAtIndexPath: is called when a touch comes down on a row. 
// Returning NO to that message halts the selection process and does not cause the currently selected row to lose its selected look while the touch is down.
- (BOOL)tableView:(UITableView *)tableView shouldHighlightRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(6_0);
- (void)tableView:(UITableView *)tableView didHighlightRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(6_0);
- (void)tableView:(UITableView *)tableView didUnhighlightRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(6_0);

// Called before the user changes the selection. Return a new indexPath, or nil, to change the proposed selection.
- (nullable NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath;
- (nullable NSIndexPath *)tableView:(UITableView *)tableView willDeselectRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(3_0);
// Called after the user changes the selection.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath;
- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(3_0);

// Editing

// Allows customization of the editingStyle for a particular cell located at 'indexPath'. If not implemented, all editable cells will have UITableViewCellEditingStyleDelete set for them when the table has editing property set to YES.
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath;
- (nullable NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(3_0) __TVOS_PROHIBITED;
- (nullable NSArray *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(8_0) __TVOS_PROHIBITED; // supercedes -tableView:titleForDeleteConfirmationButtonForRowAtIndexPath: if return value is non-nil

// Controls whether the background is indented while editing.  If not implemented, the default is YES.  This is unrelated to the indentation level below.  This method only applies to grouped style table views.
- (BOOL)tableView:(UITableView *)tableView shouldIndentWhileEditingRowAtIndexPath:(NSIndexPath *)indexPath;

// The willBegin/didEnd methods are called whenever the 'editing' property is automatically changed by the table (allowing insert/delete/move). This is done by a swipe activating a single row
- (void)tableView:(UITableView *)tableView willBeginEditingRowAtIndexPath:(NSIndexPath *)indexPath __TVOS_PROHIBITED;
- (void)tableView:(UITableView *)tableView didEndEditingRowAtIndexPath:(nullable NSIndexPath *)indexPath __TVOS_PROHIBITED;

// Moving/reordering

// Allows customization of the target row for a particular row as it is being moved/reordered
- (NSIndexPath *)tableView:(UITableView *)tableView targetIndexPathForMoveFromRowAtIndexPath:(NSIndexPath *)sourceIndexPath toProposedIndexPath:(NSIndexPath *)proposedDestinationIndexPath;               

// Indentation

- (NSInteger)tableView:(UITableView *)tableView indentationLevelForRowAtIndexPath:(NSIndexPath *)indexPath; // return 'depth' of row for hierarchies

// Copy/Paste.  All three methods must be implemented by the delegate.

- (BOOL)tableView:(UITableView *)tableView shouldShowMenuForRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(5_0);
- (BOOL)tableView:(UITableView *)tableView canPerformAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(nullable id)sender NS_AVAILABLE_IOS(5_0);
- (void)tableView:(UITableView *)tableView performAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(nullable id)sender NS_AVAILABLE_IOS(5_0);

// Focus

- (BOOL)tableView:(UITableView *)tableView canFocusRowAtIndexPath:(NSIndexPath *)indexPath NS_AVAILABLE_IOS(9_0);
- (BOOL)tableView:(UITableView *)tableView shouldUpdateFocusInContext:(UITableViewFocusUpdateContext *)context NS_AVAILABLE_IOS(9_0);
- (void)tableView:(UITableView *)tableView didUpdateFocusInContext:(UITableViewFocusUpdateContext *)context withAnimationCoordinator:(UIFocusAnimationCoordinator *)coordinator NS_AVAILABLE_IOS(9_0);
- (nullable NSIndexPath *)indexPathForPreferredFocusedViewInTableView:(UITableView *)tableView NS_AVAILABLE_IOS(9_0);

@end

详细的请参考 ios 表视图UITableViewController

ios UITableViewController

一、表视图的组成

二、表视图类型

三、cell 的相关样式

cell类型

cell扩展视图类型

四、数据源协议 UITableViewDataSource

五、委托协议 UITableViewDelegate

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