ios - 请教一个tableview 右侧索引实现的思路

Question

我现在能实现这种效果， 但是如何我想让右侧的这些索引 不管数据源的数据如何都显示A-Z， 想iphone手机通讯录那样， 有什么思路吗

Answer 1

This is officially supported.

- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
    return @[@"A", @"B", @"C", @"D"……];
}

Can’t we just arrange all 26 letters here?

Answer 2

It can be achieved. Check the UITableView Section Index related content and you should be able to find the answer you want.

Answer 3

You should modify your own data source, because the index label display number is calculated based on the array count of your data source;
You give 26 arrays in your original data source, and then fill the data in the corresponding object;
In this way, you can use the sectionIndexTitlesForTableView method to return an array of 26 English letters and it will be OK.

Answer 4

//返回27，是a－z和＃
UILocalizedIndexedCollation *indexCollation = [UILocalizedIndexedCollation currentCollation];     
[self.titleArray addObjectsFromArray:[indexCollation sectionTitles]];