FirstApp，iphone开发学习总结11，表操作（移动、删除）

nav添加左按钮：

- (void)viewDidLoad
{
//...    
    UIBarButtonItem *tableEditBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemEdit target:self action:@selector(toggleEdit:)];
    [[self navigationItem] setLeftBarButtonItem:tableEditBtn];
    [tableEditBtn release];
}

edit按钮的实现：

- (void)toggleEdit:(id)sender
{
    if ([self isEditing]) {
        [self setEditing:NO animated:YES];
    }else{
        [self setEditing:YES animated:YES];//设置编辑状态
    }
}

表删除：

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        [data removeObjectAtIndex:[indexPath row]];//先移除数据，再移除表里的显示
        [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:YES];        
    }
}

表移动：

- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath
{
    NSArray *moveRow = [data objectAtIndex:[sourceIndexPath row]];//保存移动的行
    [data removeObjectAtIndex:[sourceIndexPath row]];//将移动行数据清除，此时移动至的行空缺
    [data insertObject:moveRow atIndex:[destinationIndexPath row]];//将数据插入此空缺
}

其他未做修改。

求指点。