类似于QQ的那种折叠效果。只刷新点击的折叠行。不加载所有数据源。 测试环境Xcode4.3.3+SDK5.1兼容ios6
//
// MyTableViewController.m
// TableSectionStatistics
//
#import "MyTableViewController.h"
#define originalHeight 25.0f
#define newHeight 85.0f
#define isOpen @"85.0f"
@interface MyTableViewController ()
@end
@implementation MyTableViewController
{
NSMutableDictionary *dicClicked;
NSInteger count;
CGFloat mHeight;
NSInteger sectionIndex;
}
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
count = 0;
mHeight = originalHeight;
sectionIndex = 0;
dicClicked = [NSMutableDictionary dictionaryWithCapacity:3];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 50;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 2;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *contentIndentifer = @"Container";
if (indexPath.row == 0) {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:contentIndentifer];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:contentIndentifer];
}
NSString *statisticsContent = [[NSString alloc] initWithString:@"rlf:岁月流芳,花开几度,走在岁月里,醉在流香里,总在时光里辗转徘徊。花开几许,落花几度,岁月寒香,飘进谁的诗行,一抹幽香,掺入几许愁伤,流年似花,春来秋往,睁开迷离的双眼,回首张望,随风的尘烟荡漾着迷忙,昨日的光阴已逝去,留下无尽的回忆让人留恋与追忆"];
cell.textLabel.font = [UIFont systemFontOfSize:12.0f];
cell.textLabel.text = statisticsContent;
cell.textLabel.textColor = [UIColor brownColor]
;
cell.textLabel.opaque = NO; // 选中Opaque表示视图后面的任何内容都不应该绘制
cell.textLabel.numberOfLines = 8;
cell.selectionStyle = UITableViewCellSelectionStyleNone;
return cell;
}
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.imageView.image = [UIImage imageNamed:@"ic_milestone_heart.png"];
cell.textLabel.text = [NSString stringWithFormat:@"%d",count];
count++;
return cell;
}
//Section的标题栏高度
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
if (section == 0)
return 46;
else
return 30.0f;
}
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
CGRect headerFrame = CGRectMake(0, 0, 300, 30);
CGFloat y = 2;
if (section == 0) {
headerFrame = CGRectMake(0, 0, 300, 100);
y = 18;
}
UIView *headerView = [[UIView alloc] initWithFrame:headerFrame];
UILabel *dateLabel=[[UILabel alloc] initWithFrame:CGRectMake(20, y, 240, 24)];//日期标签
dateLabel.font=[UIFont boldSystemFontOfSize:16.0f];
dateLabel.textColor = [UIColor darkGrayColor];
dateLabel.backgroundColor=[UIColor clearColor];
UILabel *ageLabel=[[UILabel alloc] initWithFrame:CGRectMake(216, y, 88, 24)];//年龄标签
ageLabel.font=[UIFont systemFontOfSize:14.0];
ageLabel.textAlignment=UITextAlignmentRight;
ageLabel.textColor = [UIColor darkGrayColor];
ageLabel.backgroundColor=[UIColor clearColor];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = @"MM dd,yyyy";
dateLabel.text = [NSString stringWithFormat:@"%@",[dateFormatter stringFromDate:[NSDate date]]];
ageLabel.text = @"1岁 2天";
[headerView addSubview:dateLabel];
[headerView addSubview:ageLabel];
return headerView;
}
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.row == 0) {
UITableViewCell *targetCell = [tableView cellForRowAtIndexPath:indexPath];
if (targetCell.frame.size.height == originalHeight+1){
[dicClicked setObject:isOpen forKey:indexPath];
}
else{
[dicClicked removeObjectForKey:indexPath];
}
[self.tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
NSLog(@"indexPath=%@",indexPath);
NSLog(@"dicClicked=%@",dicClicked);
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.row == 0) {
if ([[dicClicked objectForKey:indexPath] isEqualToString: isOpen])
return [[dicClicked objectForKey:indexPath] floatValue];
else
return originalHeight;
}
else {
return 45.0f;
}
}
@end