iOS UITableView索引选择

UITableView要实现右边的索引选择，必须实现以下代理方法

#pragma mark - 返回索引字母数组

- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView

{

NSArray *sectionArray = [NSArray arrayWithObjects:@"X", @"Y", @"Z", nil];

//添加搜素图标

[sectionArray insertObject:UITableViewIndexSearch atIndex:0];

return sectionArray;

}

#pragma mark - 触摸索引事件

- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index

{

//...

if(title == [self.sectionTitleArray objectAtIndex:index])

{

[self tableViewSectionIndexTouched:title];

}

return index;

}

- (void) tableViewSectionIndexTouched:(NSString *)title

{

//加载一个UIView,显示选中后的字母,如imageViewIndex;

dispatch_time_t time = dispatch_time(DISPATCH_TIME_NOW, 2 * NSEC_PER_SEC);

    dispatch_after(time, dispatch_get_main_queue(), ^{

self.imageViewIndex.hidden = YES;

    });

}