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//
// TPCollectionController.m
// ThePaperHD
//
// Created by scar1900 on 15/1/6.
// Copyright (c) 2015年 scar1900. All rights reserved.
//
#import "TPCollectionController.h"
@implementation collectLoadView
@synthesize state = _state;
@synthesize delegate;
- (id)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
self.backgroundColor = [UIColor clearColor];
[self addSubview:self.activityView];
[self addSubview:self.textLabel];
self.state = RefreshStateNormal;
}
return self;
}
- (UIActivityIndicatorView*)activityView {
if (!_activityView) {
_activityView = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
_activityView.frame = CGRectMake(CGRectGetWidth(self.bounds)/2-25/2,
10, 25, 25);
[_activityView stopAnimating];
_activityView.hidesWhenStopped = YES;
}
return _activityView;
}
- (UILabel*)textLabel {
if (!_textLabel) {
_textLabel = [[UILabel alloc]initWithFrame:CGRectMake(0,CGRectGetMaxY(self.activityView.frame)+5 , CGRectGetWidth(self.bounds), 20)];
_textLabel.textAlignment = NSTextAlignmentCenter;
_textLabel.textColor = [UIColor colorWithHexString:TextGray];
_textLabel.autoresizingMask = AutoresizingAuto;
_textLabel.backgroundColor = [UIColor clearColor];
}
_textLabel.font = appFont(11, NO);
return _textLabel;
}
- (void)setState:(collectLoadState )sta {
if (_state == sta) return;
self.activityView.frame = CGRectMake(CGRectGetWidth(self.bounds)/2-25/2,
10, 25, 25);
_state = sta;
if (sta == RefreshStateNormal) {
[self.activityView stopAnimating];
self.textLabel.hidden = NO;
self.textLabel.frame = self.bounds;
self.textLabel.text = @"上拉加载数据";
}else if (sta == RefreshStateRefreshing) {
self.textLabel.hidden = NO;
[self.activityView startAnimating];
self.textLabel.frame = CGRectMake(0,CGRectGetMaxY(self.activityView.frame)+5 , CGRectGetWidth(self.bounds), 20);
self.textLabel.text = @"正在加载";
if ([delegate conformsToProtocol:@protocol(collectLoadDelegate)] &&
[delegate respondsToSelector:@selector(startRefresh)]) {
[delegate startLoad];
}
}else if (sta == RefreshStateCancel) {
self.state = RefreshStateNormal;
}else if (sta == RefreshStateSucess) {
self.state = RefreshStateNormal;
}else if (sta == RefreshStateFailed) {
// ShowTextMessage(@"加载失败");
self.state = RefreshStateNormal;
}else if (sta == RefreshStateNoMore) {
[self.activityView stopAnimating];
self.textLabel.hidden = NO;
self.textLabel.frame = self.bounds;
self.textLabel.text = @"没有更多数据";
}else if (sta == RefreshStatePulling) {
[self.activityView stopAnimating];
self.textLabel.hidden = NO;
self.textLabel.frame = self.bounds;
self.textLabel.text = @"释放加载数据";
}
}
- (void)layoutSubviews {
[super layoutSubviews];
if ([[TPUserDefault instance].isNightMode intValue] > 0) {
self.activityView.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhite;
}else {
self.activityView.activityIndicatorViewStyle = UIActivityIndicatorViewStyleGray;
}
}
@end
@interface TPCollectionController ()
@end
@implementation TPCollectionController
@synthesize collectionView;
@synthesize collectionLayout = _collectionLayout;
@synthesize nextUrl = _nextUrl;
@synthesize loadFooter;
- (id)initWithCollectionViewLayout:(UICollectionViewFlowLayout *)layout{
if (self = [super init]) {
CGFloat width = [UIScreen mainScreen].applicationFrame.size.width;
CGFloat height = [UIScreen mainScreen].applicationFrame.size.height;
self.collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 0, width, height)collectionViewLayout:layout];
self.collectionView.delegate = self;
self.collectionView.dataSource = self;
self.collectionView.autoresizingMask = AutoresizingFull;
self.collectionView.backgroundColor = [UIColor clearColor];
layout.footerReferenceSize = CGSizeMake(CGRectGetWidth(self.collectionView.bounds), 60);
[self.collectionView registerClass:[collectLoadView class] forSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:collectLoadIndentfier];
[self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:collectCellIdentifier];
self.collectionView.allowsSelection = YES;
self.collectionView.scrollEnabled = YES;
self.collectionView.showsHorizontalScrollIndicator= NO;
self.collectionView.showsVerticalScrollIndicator= YES;
self.collectionView.delaysContentTouches = NO;
isCanLoad = NO;
isCanRefresh = NO;
}
return self;
}
- (id)init {
if (self = [super init]) {
CGFloat width = [UIScreen mainScreen].applicationFrame.size.width;
CGFloat height = [UIScreen mainScreen].applicationFrame.size.height;
self.collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 0, width, height)];
self.collectionView.delegate = self;
self.collectionView.dataSource = self;
self.collectionView.autoresizingMask = AutoresizingFull;
self.collectionView.backgroundColor = [UIColor clearColor];
[self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:collectCellIdentifier];
self.collectionView.allowsSelection = YES;
self.collectionView.scrollEnabled = YES;
self.collectionView.showsHorizontalScrollIndicator= NO;
self.collectionView.showsVerticalScrollIndicator= YES;
}
return self;
}
- (void)viewDidLoad {
[super viewDidLoad];
self.collectionView.frame = self.view.bounds;
self.collectionView.clipsToBounds = NO;
[self.view addSubview:self.collectionView];
// Do any additional setup after loading the view.
}
- (void)viewWillLayoutSubviews {
[super viewWillLayoutSubviews];
if (isCanRefresh) {
self.collectionView.refreshControl.frame = CGRectMake(0,
self.collectionView.refreshControl.frame.origin.y,
CGRectGetWidth(self.collectionView.frame),
self.collectionView.refreshControl.frame.size.height);
}
}
- (void)configCanRefresh:(BOOL)canRefresh canLoad:(BOOL)canLoad {
if (canRefresh || canLoad) {
if (canRefresh) {
isCanRefresh = YES;
NSDictionary *dic = @{@"pattern":@"%d.png",@"drawingStart":@1,@"drawingEnd":@30,@"loadingStart":@31,@"loadingEnd":@73};
self.drawingImgs = [NSMutableArray array];
self.loadingImgs = [NSMutableArray array];
NSUInteger drawingStart = [dic[@"drawingStart"] intValue];
NSUInteger drawingEnd = [dic[@"drawingEnd"] intValue];
NSUInteger laodingStart = [dic[@"loadingStart"] intValue];
NSUInteger loadingEnd = [dic[@"loadingEnd"] intValue];
for (NSUInteger i = drawingStart; i <= drawingEnd; i++) {
NSString *fileName = [NSString stringWithFormat:dic[@"pattern"],i];
[self.drawingImgs addObject:Image([NSString stringWithFormat:@"PaperPullImage/%@",fileName])];
}
for (NSUInteger i = laodingStart; i <= loadingEnd; i++) {
NSString *fileName = [NSString stringWithFormat:dic[@"pattern"],i];
[self.loadingImgs addObject:Image([NSString stringWithFormat:@"PaperPullImage/%@",fileName])];
}
__weak typeof(self) Self = self;
[self.collectionView addPullToRefreshWithDrawingImgs:self.drawingImgs andLoadingImgs:self.loadingImgs andActionHandler:^{
[Self startRefresh];
}];
// [self.collectionView addHeaderWithTarget:self action:@selector(startRefresh)];
// self.collectionView.headerPullToRefreshText = @"下拉刷新数据";
// self.collectionView.headerReleaseToRefreshText = @"释放开始刷新";
// self.collectionView.headerRefreshingText = @"正在刷新...";
}
if (canLoad) {
isCanLoad = YES;
[self addObserver:self forKeyPath:@"self.collectionView.contentOffset" options:NSKeyValueObservingOptionNew context:nil];
// [self.collectionView addFooterWithTarget:self action:@selector(startLoad)];
// self.collectionView.footerPullToRefreshText = @"上拉加载数据";
// self.collectionView.footerReleaseToRefreshText = @"释放开始加载";
// self.collectionView.footerRefreshingText = @"加载中...";
}else {
isCanLoad = NO;
}
}
}
- (void)setNextUrl:(NSString *)url {
if ([_nextUrl isEqualToString:url]) {
if (isBlankString(url)) {
[self noMoreLoad];
}
return;
}
_nextUrl = url;
if (isBlankString(url)) {
[self noMoreLoad];
}else {
self.loadFooter.state = RefreshStateNormal;
}
}
- (void)setCollectionLayout:(UICollectionViewFlowLayout *)layout {
_collectionLayout = layout;
layout.footerReferenceSize = CGSizeMake(CGRectGetWidth(self.collectionView.bounds), 60);
[self.collectionView setCollectionViewLayout:layout animated:YES];
}
#pragma mark <UICollectionViewDataSource>
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
return 1;
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
return 20;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collection cellForItemAtIndexPath:(NSIndexPath *)indexPath {
UICollectionViewCell *cell = [collection dequeueReusableCellWithReuseIdentifier:collectCellIdentifier forIndexPath:indexPath];
// cell.backgroundColor = RandomColor;
return cell;
}
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
return CGSizeMake(300, 335/2);
}
-(UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section
{
UIEdgeInsets top = {0,10,0,10};
return top;
}
- (UICollectionReusableView *)collectionView:(UICollectionView *)collection
viewForSupplementaryElementOfKind:(NSString *)kind
atIndexPath:(NSIndexPath *)indexPath {
collectLoadView *reusableview = nil;
if (kind == UICollectionElementKindSectionFooter && isCanLoad){
collectLoadView *footerview = [collection dequeueReusableSupplementaryViewOfKind:kind withReuseIdentifier:collectLoadIndentfier forIndexPath:indexPath];
if (!self.loadFooter) {
self.loadFooter = footerview;
self.loadFooter.hidden = YES;
}
reusableview = footerview;
self.loadFooter.delegate = self;
}
return reusableview;
}
#pragma mark <UICollectionViewDelegate>
/*
// Uncomment this method to specify if the specified item should be highlighted during tracking
- (BOOL)collectionView:(UICollectionView *)collectionView shouldHighlightItemAtIndexPath:(NSIndexPath *)indexPath {
return YES;
}
*/
/*
// Uncomment this method to specify if the specified item should be selected
- (BOOL)collectionView:(UICollectionView *)collectionView shouldSelectItemAtIndexPath:(NSIndexPath *)indexPath {
return YES;
}
*/
/*
// Uncomment these methods to specify if an action menu should be displayed for the specified item, and react to actions performed on the item
- (BOOL)collectionView:(UICollectionView *)collectionView shouldShowMenuForItemAtIndexPath:(NSIndexPath *)indexPath {
return NO;
}
- (BOOL)collectionView:(UICollectionView *)collectionView canPerformAction:(SEL)action forItemAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender {
return NO;
}
- (void)collectionView:(UICollectionView *)collectionView performAction:(SEL)action forItemAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender {
}
*/
#pragma mark - refresh and load method
- (void)manualRefresh {
// [self.collectionView headerBeginRefreshing];
[self.collectionView.refreshControl manulHeadRefresh];
}
- (void)manualLoad {
[self startLoad];
}
- (void)startRefresh {
[self pullRefreshHandler];
[self loadSuccess];
}
- (void)startLoad {
if (isBlankString(self.nextUrl)) {
self.loadFooter.state = RefreshStateNoMore;
return;
}
[self pullLoadMoreHander];
}
- (void)pullRefreshHandler{
}
- (void)pullLoadMoreHander {
}
- (void)endRefresh:(void (^)(void))animate completion:(void (^)(void))completion {
[self.collectionView didFinishPullToRefresh:^{
if (animate) {
animate();
}
} completion:^{
if (completion) {
completion();
}
}];
}
- (void)noMoreLoad {
self.loadFooter.state = RefreshStateNoMore;
}
- (void)loadSuccess {
self.loadFooter.state = RefreshStateSucess;
}
- (void)loadFailed {
self.loadFooter.state = RefreshStateFailed;
}
- (void)cancelLoadMore {
self.loadFooter.state = RefreshStateNormal;
}
#pragma mark - kvo
#pragma mark - KVO call back
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
if (!isCanLoad) {
return;
}
if (!self.collectionView.userInteractionEnabled || self.collectionView.alpha <= 0.01 || self.collectionView.hidden) return;
if (isCanLoad) {
[self loadMethod];
}
}
- (void)loadMethod {
if (self.collectionView.contentOffset.y < 0) { //顶部操作直接返回
return;
}
if (self.loadFooter.state == RefreshStateRefreshing || self.loadFooter.state == RefreshStateNoMore) {
self.loadFooter.hidden = NO;
return;
}
CGPoint offset = self.collectionView.contentOffset;
CGRect bounds = self.collectionView.bounds;
CGSize size = self.collectionView.contentSize;
UIEdgeInsets inset = self.collectionView.contentInset;
CGFloat currentOffset = offset.y + bounds.size.height - inset.bottom;
CGFloat maximumOffset = size.height;
CGFloat compareOffset = currentOffset - maximumOffset;
if (self.collectionView.isDragging ) {
if (compareOffset<15 ) {
if (!self.collectionView.isDecelerating) {
self.loadFooter.state = RefreshStateNormal;
}
}else if (self.loadFooter.state == RefreshStateNormal && (currentOffset - maximumOffset)>20) {
self.loadFooter.hidden = NO;
if (!self.collectionView.isDecelerating) {
self.loadFooter.state = RefreshStatePulling; //转为即将刷新
}else {
self.loadFooter.state = RefreshStateRefreshing;
}
}
}else {
self.loadFooter.hidden = NO;
if (self.loadFooter.state == RefreshStatePulling) {
self.loadFooter.state = RefreshStateRefreshing;
}else {
self.loadFooter.state = RefreshStateNormal;
}
}
}
#pragma mark - remote method
- (void)startWaitCursor:(int)actionTag {
}
- (void)stopWaitCursor:(int)actionTag {
}
- (void)remoteResponsFailed:(int)actionTag withMessage:(NSString *)message resultCode:(NSString *)code{
ShowTextMessage(message);
[self endRefresh:nil completion:nil];
[self loadSuccess];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)dealloc
{
if (isCanLoad) {
[self removeObserver:self forKeyPath:@"self.collectionView.contentOffset"];
}
[self.collectionView removePullToRefresh];
[self.collectionView.refreshControl removeFromSuperview];
self.collectionView.refreshControl = nil;
[self.collectionView removeFromSuperview];
self.collectionView = nil;
[self.drawingImgs removeAllObjects];
[self.loadingImgs removeAllObjects];
}
@end
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