自定义UITableView折叠效果代码,ObjC代码库,德仔网

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【ObjC】自定义UITableView折叠效果
作者:佳航 / 发布于2014/11/15/ 427
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。

	//
	// MyTableViewController.m
	// TableSectionStatistics
	//
	// Created by rlf on 12-11-23.
	// Copyright (c) 2012年 __rlf__. All rights reserved.
	//
	
	#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
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