1，uitableview中涉及到排序的问题，查找资料后发现使用UILocalizedIndexedCollation可以很好处理中文和英文系统下中文的排序。而且如果第一个汉字首字母一样那么就会按照第二个开始排序。
2，如果tableview的高度不是整个全屏的，比如有导航栏定制等，那么ios7.0下会缩减显示。呈现的是带有圆点的效果。其他系统不会。且无法修改。
效果如下：
代码如下：
#pragma mark -
#pragma mark Table view data source and delegate methods
//设置Section的数
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
// The number of sections is the same as the number of titles in the collation.
return [[collation sectionTitles] count];
}
//设置每个Section下面的cell数
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
// The number of time zones in the section is the count of the array associated with the section in the sections array.
NSArray *friendsInSection = [sectionsArray objectAtIndex:section];
return [friendsInSection count];
}
//设置每行的cell的内容
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
self.customTable = tableView;
static NSString *CellIdentifier = @"Friends";
UITableViewCell *cell = [self.customTable dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
cell.accessoryType = UITableViewCellAccessoryNone;
}
// Get the time zone from the array associated with the section index in the sections array.
NSArray *friendsInSection = [sectionsArray objectAtIndex:indexPath.section];
// Configure the cell with the time zone's name.
FriendsWrapper *friend = [friendsInSection objectAtIndex:indexPath.row];
cell.textLabel.text = friend.localeName;
return cell;
}
/*
Section-related methods: Retrieve the section titles and section index titles from the collation.
*/
-(CGFloat)tableView:(UITableView*)tableView heightForRowAtIndexPath:(NSIndexPath*)indexPath
{
UITableViewCell*cell =[self tableView:tableView cellForRowAtIndexPath:indexPath];
return cell.frame.size.height;
}
//设置section的Header
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
//NSLog(@"%d",[[self.sectionsArray objectAtIndex:section]count]);
if ([[self.sectionsArray objectAtIndex:section]count] == 0)
{
return nil;
}
return [[collation sectionTitles] objectAtIndex:section];
}
//设置索引标题
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
return [collation sectionIndexTitles];
}
//关联搜索
- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index {
return [collation sectionForSectionIndexTitleAtIndex:index];
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
#pragma mark -
#pragma mark Set the data array and configure the section data
- (void)setFriendsListArray:(NSMutableArray *)newDataArray {
if (newDataArray != friendsListArray) {
[friendsListArray release];
friendsListArray = [newDataArray retain];
}
if (friendsListArray == nil) {
self.sectionsArray = nil;
}
else {
[self configureSections];
}
}
- (void)configureSections {
//获得当前UILocalizedIndexedCollation对象并且引用赋给collation
self.collation = [UILocalizedIndexedCollation currentCollation];
//获得索引数和section标题数
NSInteger index, sectionTitlesCount = [[collation sectionTitles] count];
NSMutableArray *newSectionsArray = [[NSMutableArray alloc] initWithCapacity:sectionTitlesCount];
//设置sections数组：元素包含timezone
for (index = 0; index < sectionTitlesCount; index++) {
NSMutableArray *array = [[NSMutableArray alloc] init];
[newSectionsArray addObject:array];
[array release];
}
// Segregate the time zones into the appropriate arrays.
for (FriendsWrapper *friend in friendsListArray) {
//根据timezone的localename，获得对应的时区的section number
NSInteger sectionNumber = [collation sectionForObject:friend collationStringSelector:@selector(localeName)];
//获得section的数组
NSMutableArray *sectionFriends = [newSectionsArray objectAtIndex:sectionNumber];
//添加时区内容到section中 sectionTimeZones 存放的是所有的字符串
[sectionFriends addObject:friend];
}
//排序
for (index = 0; index < sectionTitlesCount; index++)
{
NSMutableArray *friendsListArrayForSection = [newSectionsArray objectAtIndex:index];
//获得排序结果
NSArray *sortedFriendsArrayForSection = [collation sortedArrayFromArray:friendsListArrayForSection collationStringSelector:@selector(localeName)];
//替换原来数组
[newSectionsArray replaceObjectAtIndex:index withObject:sortedFriendsArrayForSection];
}
self.sectionsArray = newSectionsArray;
[newSectionsArray release];
}
#import "FriendsWrapper.h"
@implementation FriendsWrapper
@synthesize localeName;
- (id)initWithFriends:(NSString *)nameComponents
{
if (self = [super init]) {
NSString *name = nil;
if ((nameComponents == nil) ||
(nameComponents.length == 0)){
name = @"";
}else
{
name = nameComponents;
}
/*if ([nameComponents count] == 2) {
name = [nameComponents objectAtIndex:1];
}
if ([nameComponents count] == 3) {
name = [NSString stringWithFormat:@"%@ (%@)", [nameComponents objectAtIndex:2], [nameComponents objectAtIndex:1]];
}*/
localeName = [[name stringByReplacingOccurrencesOfString:@"_" withString:@" "] retain];
}
return self;
}
- (void)dealloc {
[localeName release];
[super dealloc];
}
@end