iOS实现列表折叠效果

本文实例为大家分享了iOS实现列表折叠效果的具体代码，供大家参考，具体内容如下

实现列表折叠效果其实比较简单，点击列表头部的时候，把返回列表行数设为 0，就是收起列表；再次点击列表头部，显示列表的行数，就展开了列表。

#import \"TableDownUpVC.h\"#import \"TableViewCell_TableSelect.h\"@interface TableDownUpVC (){NSMutableDictionary *dicSelet;NSArray *arrData;NSMutableArray *arrStatus;NSInteger selectFlag;NSMutableDictionary *dictShow;}@property (nonatomic, strong) UIImageView *imgArror;@end@implementation TableDownUpVC- (void)viewDidLoad {[super viewDidLoad];self.tableView.autoresizingMask = UIViewAutoresizingFlexibleHeight;self.title = @\"列表折叠效果\";dictShow = [[NSMutableDictionary alloc] init];arrStatus = [[NSMutableArray alloc] init];NSDictionary *dict0 = @{@\"section\":@\"头部0\",@\"content\":@[@{@\"title\":@\"Section0\",@\"subTitle\":@\"Row0\",@\"avator\":@\"user_default_blue\"},@{@\"title\":@\"Section0\",@\"subTitle\":@\"Row1\",@\"avator\":@\"user_default_blue\"},@{@\"title\":@\"Section0\",@\"subTitle\":@\"Row2\",@\"avator\":@\"user_default_blue\"}]};NSDictionary *dict1 = @{@\"section\":@\"头部1\",@\"content\":@[@{@\"title\":@\"Section1\",@\"subTitle\":@\"Row0\",@\"avator\":@\"user_default_blue\"},@{@\"title\":@\"Section1\",@\"subTitle\":@\"Row1\",@\"avator\":@\"user_default_blue\"},@{@\"title\":@\"Section1\",@\"subTitle\":@\"Row2\",@\"avator\":@\"user_default_blue\"}]};NSDictionary *dict2 = @{@\"section\":@\"头部2\",@\"content\":@[@{@\"title\":@\"Section2\",@\"subTitle\":@\"Row0\",@\"avator\":@\"user_default_blue\"},@{@\"title\":@\"Section2\",@\"subTitle\":@\"Row1\",@\"avator\":@\"user_default_blue\"},@{@\"title\":@\"Section2\",@\"subTitle\":@\"Row2\",@\"avator\":@\"user_default_blue\"}]};arrData = @[dict0,dict1,dict2];dicSelet = [[NSMutableDictionary alloc] init];//初始化选中状态(默认都不选择)for (NSInteger i=0; i<arrData.count; i++) {NSArray *content = arrData[i][@\"content\"];NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];for (NSInteger j=0; j<content.count; j++) {[dict setObject:@\"0\" forKey:STR_NUM(j)];}[arrStatus addObject:dict];}//初始化列表头部折叠状态for (NSInteger i=0; i<arrData.count; i++) {[dictShow setObject:@\"0\" forKey:STR_NUM(i)];}}#pragma mark - TableViewDataSource,UITableViewDelegate 扩展- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{return arrData.count;}- (NSInteger)tableViewEx:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{NSString *isShow = dictShow[STR_NUM(section)];if ([isShow isEqualToString:@\"0\"]) {NSArray *arr = arrData[section][@\"content\"];return arr.count;} else {return 0;}}- (CGFloat)tableViewEx:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{return 60;}- (UITableViewCell *)tableViewEx:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{static NSString * identifier = @\"cellIdentifier\";TableViewCell_TableSelect *cell = [tableView dequeueReusableCellWithIdentifier:identifier];cell.selectionStyle = UITableViewCellSelectionStyleNone;if (cell == nil) {cell = [[TableViewCell_TableSelect alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:identifier];}[cell setDictInfo:arrData[indexPath.section][@\"content\"][indexPath.row]];[cell setAccessoryImage:arrStatus[indexPath.section][STR_NUM(indexPath.row)]];return cell;}- (void)tableViewEx:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{NSMutableDictionary *dict = arrStatus[indexPath.section];NSString *str = dict[STR_NUM(indexPath.row)];if ([str isEqualToString:@\"0\"]) {[dict setValue:@\"1\" forKey:STR_NUM(indexPath.row)];} else {[dict setValue:@\"0\" forKey:STR_NUM(indexPath.row)];}[self.tableView reloadData];}- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{return 50;}- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section{return 10;}- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{UIView *headerView = [UICommonCtrl commonViewWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, 50) color:kColor_White];UILabel *title = [UICommonCtrl commonLabelWithFrame:CGRectMake(10, 15, 200, 20)text:arrData[section][@\"section\"]color:kColor_Blackfont:kFont_LargetextAlignment:NSTextAlignmentLeft];[headerView addSubview:title];_imgArror = [UICommonCtrl commonImageViewWithFrame:CGRectMake(SCREEN_WIDTH-20, 22.5, 10, 5) image:nil];[headerView addSubview:_imgArror];NSString *str = [dictShow objectForKey:STR_NUM(section)];if ([str isEqualToString:@\"0\"]) {_imgArror.image = [UIImage imageNamed:@\"icon_down\"];} else {_imgArror.image = [UIImage imageNamed:@\"icon_up\"];}@weakify(self)UIButton *btn = [UICommonCtrl commonButtonWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, 50)text:@\"\"color:kColor_Blackfont:kFont_LargebackgroundImage:nilblock:^(UIButton *btn) {@strongify(self)NSString *str = [dictShow objectForKey:STR_NUM(section)];if ([str isEqualToString:@\"0\"]) {[dictShow setValue:@\"1\" forKey:STR_NUM(section)];} else {[dictShow setValue:@\"0\" forKey:STR_NUM(section)];}[self refreshSection:section];}];[headerView addSubview:btn];for (NSInteger i=0; i<2; i++) {UIView *line = [UICommonCtrl commonLineViewWithFrame:CGRectMake(0, (50-LINE_SIZE)*i, SCREEN_WIDTH, LINE_SIZE) color:kColor_Line];[headerView addSubview:line];}return headerView;}- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section{UIView *footerView = [UICommonCtrl commonViewWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, 10) color:kColor_Background];return footerView;}- (void)refreshSection:(NSInteger)section{NSIndexSet *indexSet=[[NSIndexSet alloc]initWithIndex:section];[self.tableView reloadSections:indexSet withRowAnimation:UITableViewRowAnimationFade];}@end

效果图