UITableView批量插入、删除、重载Rows和Sectio

UITableView 的使用可以参考iOS开发系列--UITableView全面解析

官方文档 ：https://developer.apple.com/library/content/documentation/UserExperience/Conceptual/TableView_iPhone/ManageInsertDeleteRow/ManageInsertDeleteRow.html#//apple_ref/doc/uid/TP40007451-CH10-SW9

批量插入和删除方法

- (void)beginUpdates;
- (void)endUpdates;
 
- (void)insertSections:(NSIndexSet *)sections withRowAnimation:(UITableViewRowAnimation)animation;
- (void)deleteSections:(NSIndexSet *)sections withRowAnimation:(UITableViewRowAnimation)animation;
- (void)reloadSections:(NSIndexSet *)sections withRowAnimation:(UITableViewRowAnimation)animation;
 
- (void)insertRowsAtIndexPaths:(NSArray *)indexPaths withRowAnimation: (UITableViewRowAnimation)animation;
- (void)deleteRowsAtIndexPaths:(NSArray *)indexPaths withRowAnimation: (UITableViewRowAnimation)animation;
- (void)reloadRowsAtIndexPaths:(NSArray *)indexPaths withRowAnimation:(UITableViewRowAnimation)animation;

实际的使用示例：

- (IBAction)insertAndDeleteRows:(id)sender {
    // original rows: Arizona, California, Delaware, New Jersey, Washington
 
    [states removeObjectAtIndex:4]; // Washington
    [states removeObjectAtIndex:2]; // Delaware
    [states insertObject:@"Alaska" atIndex:0];
    [states insertObject:@"Georgia" atIndex:3];
    [states insertObject:@"Virginia" atIndex:5];
 
    NSArray *deleteIndexPaths = [NSArray arrayWithObjects:
                                [NSIndexPath indexPathForRow:2 inSection:0],
                                [NSIndexPath indexPathForRow:4 inSection:0],
                                nil];
    NSArray *insertIndexPaths = [NSArray arrayWithObjects:
                                [NSIndexPath indexPathForRow:0 inSection:0],
                                [NSIndexPath indexPathForRow:3 inSection:0],
                                [NSIndexPath indexPathForRow:5 inSection:0],
                                nil];
    UITableView *tv = (UITableView *)self.view;
 
    [tv beginUpdates];
    [tv insertRowsAtIndexPaths:insertIndexPaths withRowAnimation:UITableViewRowAnimationRight];
    [tv deleteRowsAtIndexPaths:deleteIndexPaths withRowAnimation:UITableViewRowAnimationFade];
    [tv endUpdates];
 
    // ending rows: Alaska, Arizona, California, Georgia, New Jersey, Virginia
}

首先需要修改UITableView的Style：

- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath {
    return UITableViewCellEditingStyleDelete;
}

使用UITableViewCellEditingStyleDelete当向左滑动时，才会出现删除按钮，
Style有三种类型：

typedef NS_ENUM(NSInteger, UITableViewCellEditingStyle) {
    UITableViewCellEditingStyleNone,
    UITableViewCellEditingStyleDelete,
    UITableViewCellEditingStyleInsert
};

调用删除API前需要先删除数据源里的数据

deleteRowsAtIndexPaths操作有reload的效果，不先删除数据源里的数据将会导致异常NSInternalInconsistencyException，

[tv deleteRowsAtIndexPaths:deleteIndexPaths withRowAnimation:UITableViewRowAnimationFade];

参考资料

uitableview执行deleteRowsAtIndexPaths时出错
UItableView中滑动删除 cell