UITableView的headerView展开缩放动画

//
//  HeaderViewTapAnimationController.m
//  Animations
//
//  Created by FrankLiu on 15/11/30.
//  Copyright © 2015年 YouXianMing. All rights reserved.
//

#import "HeaderViewTapAnimationController.h"
#import "ClassModel.h"
#import "StudentInfoCell.h"
#import "ClassHeaderView.h"
#import "WxHxD.h"
#import "GCD.h"

static NSString *infoCellFlag = @"BaseTableViewCell";
static NSString *infoHeadFlag = @"ClassHeaderView";

@interface HeaderViewTapAnimationController () <UITableViewDataSource, UITableViewDelegate, CustomHeaderFooterViewDelegate>

@property (nonatomic, strong) NSMutableArray  *classModels;
@property (nonatomic, strong) UITableView     *tableView;

@property (nonatomic) BOOL                     sectionFirstLoad;
@property (nonatomic, weak)   ClassHeaderView *tmpHeadView;

@end

@implementation HeaderViewTapAnimationController

- (void)viewDidLoad {

[super viewDidLoad];
}

- (void)setup {

[super setup];

[self createDatas];

[self createTableView];

[self bringTitleViewToFront];

[self firstLoadDataAnimation];
}

#pragma mark - 数据源相关
- (void)createDatas {

NSArray *datas = @[@{@"className" : @"Aitna",
@"students"  : @[@{@"name" : @"Y.X.M.",   @"age" : @(27)},
@{@"name" : @"Leif",     @"age" : @(12)},
@{@"name" : @"Lennon",   @"age" : @(23)},
@{@"name" : @"Lambert",  @"age" : @(19)},
@{@"name" : @"Jerome",   @"age" : @(19)},
@{@"name" : @"Isidore",  @"age" : @(19)}]},
@{@"className" : @"Melete",
@"students"  : @[@{@"name" : @"Merle",    @"age" : @(34)},
@{@"name" : @"Paddy",    @"age" : @(31)},
@{@"name" : @"Perry",    @"age" : @(10)},
@{@"name" : @"Philip",   @"age" : @(39)}]},
@{@"className" : @"Aoede",
@"students"  : @[@{@"name" : @"Verne",    @"age" : @(34)},
@{@"name" : @"Vincent",  @"age" : @(78)},
@{@"name" : @"Walter",   @"age" : @(43)},
@{@"name" : @"Zachary",  @"age" : @(21)}]},
@{@"className" : @"Dione",
@"students"  : @[@{@"name" : @"Timothy",  @"age" : @(98)},
@{@"name" : @"Roderick", @"age" : @(21)},
@{@"name" : @"Quentin",  @"age" : @(7)},
@{@"name" : @"Paddy",    @"age" : @(67)}]},
@{@"className" : @"Adanos",
@"students"  : @[@{@"name" : @"Mortimer", @"age" : @(23)},
@{@"name" : @"Michael",  @"age" : @(45)},
@{@"name" : @"Kevin",    @"age" : @(89)},
@{@"name" : @"Jeremy",   @"age" : @(23)}]},];

self.classModels = [[NSMutableArray alloc] init];
for (int count = 0; count < datas.count; count++) {

ClassModel *classModel = [[ClassModel alloc] initWithDictionary:datas[count]];
classModel.expend      = NO;

[self.classModels addObject:classModel];
}
}

#pragma mark - tableView相关
- (UITableView *)createTableViewWithDelegate:(id)delegate frame:(CGRect)frame {

UITableView *tableView   = [[UITableView alloc] initWithFrame:frame style:UITableViewStylePlain];
tableView.delegate       = delegate;
tableView.dataSource     = delegate;
tableView.separatorStyle = UITableViewCellSeparatorStyleNone;

tableView.showsHorizontalScrollIndicator = NO;
tableView.showsVerticalScrollIndicator   = NO;

[tableView registerClass:[StudentInfoCell class] forCellReuseIdentifier:infoCellFlag];
[tableView registerClass:[ClassHeaderView class] forHeaderFooterViewReuseIdentifier:infoHeadFlag];

return tableView;
}

- (void)createTableView {

self.tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 64, Width, Height - 64) style:UITableViewStylePlain];
self.tableView.delegate                       = self;
self.tableView.dataSource                     = self;
self.tableView.separatorStyle                 = UITableViewCellSeparatorStyleNone;
self.tableView.showsHorizontalScrollIndicator = NO;
self.tableView.showsVerticalScrollIndicator   = NO;

[self.tableView registerClass:[StudentInfoCell class] forCellReuseIdentifier:infoCellFlag];
[self.tableView registerClass:[ClassHeaderView class] forHeaderFooterViewReuseIdentifier:infoHeadFlag];

[self.view addSubview:self.tableView];
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

ClassModel *model = _classModels[section];

if (model.expend == YES) {

return [model.students count];

} else {

return 0;
}
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {

if (self.sectionFirstLoad == NO) {

return 0;

} else {

return [_classModels count];
}
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

CustomCell *cell = [tableView dequeueReusableCellWithIdentifier:infoCellFlag];

ClassModel   *classModel   = _classModels[indexPath.section];
StudentModel *studentModel = classModel.students[indexPath.row];
cell.data                  = studentModel;
cell.indexPath             = indexPath;
[cell loadContent];

return cell;
}

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {

ClassHeaderView *titleView = [tableView dequeueReusableHeaderFooterViewWithIdentifier:infoHeadFlag];
titleView.delegate         = self;
titleView.data             = _classModels[section];
titleView.section          = section;
[titleView loadContent];

if (section == 0) {

self.tmpHeadView = titleView;
}

ClassModel *model = _classModels[section];
if (model.expend == YES) {

[titleView extendStateAnimated:NO];

} else {

[titleView normalStateAnimated:NO];
}

return titleView;
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {

return 60;
}

- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {

return 30;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

StudentInfoCell *cell = [tableView cellForRowAtIndexPath:indexPath];
[cell showSelectedAnimation];

[tableView deselectRowAtIndexPath:indexPath animated:YES];
}

- (void)customHeaderFooterView:(CustomHeaderFooterView *)customHeaderFooterView event:(id)event {

NSInteger section = customHeaderFooterView.section;
ClassModel *model = _classModels[section];

ClassHeaderView *classHeaderView = (ClassHeaderView *)customHeaderFooterView;

if (model.expend == YES) {

// 缩回去
model.expend = NO;
[classHeaderView normalStateAnimated:YES];

NSMutableArray *indexPaths = [NSMutableArray array];
for (int i = 0; i < model.students.count; i++) {

[indexPaths addObject:[NSIndexPath indexPathForItem:i inSection:section]];
}
[self.tableView deleteRowsAtIndexPaths:indexPaths withRowAnimation:UITableViewRowAnimationFade];

} else {

// 显示出来
model.expend = YES;
[classHeaderView extendStateAnimated:YES];

NSMutableArray *indexPaths = [NSMutableArray array];
for (int i = 0; i < model.students.count; i++) {

[indexPaths addObject:[NSIndexPath indexPathForItem:i inSection:section]];
}
[self.tableView insertRowsAtIndexPaths:indexPaths withRowAnimation:UITableViewRowAnimationFade];
}
}

- (void)firstLoadDataAnimation {

[GCDQueue executeInMainQueue:^{

// Extend sections.
self.sectionFirstLoad = YES;
NSIndexSet *indexSet  = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, self.classModels.count)];
[self.tableView insertSections:indexSet withRowAnimation:UITableViewRowAnimationFade];

[GCDQueue executeInMainQueue:^{

// Extend cells.
[self customHeaderFooterView:self.tmpHeadView event:nil];

} afterDelaySecs:0.4f];

} afterDelaySecs:0.3f];
}

@end