The implementation of Netease news homepage allows you to add, remove tags, automatically scroll images, and switch between left and right images infinitely

The implementation of Netease news homepage allows you to add, remove tags, automatically scroll images, and switch between left and right images infinitely

//// RootViewController. h // Homework_163News /// Created by lanouhn on 14-8-30. // Copyright (c) 2014 vaercly@163.com Chen conglei. all rights reserved. // # import
 
  
@ Interface RootViewController: UIViewController @ property (nonatomic, retain) NSMutableArray * titles; @ property (nonatomic, retain) NSMutableArray * labels; @ end // RootViewController. m // Homework_163News /// Created by lanouhn on 14-8-30. // Copyright (c) 2014 vaercly@163.com Chen conglei. all rights reserved. // # import "RootViewController. h "# import" NewsView. h "@ interface RootViewController ()
  
   
{NSMutableArray * _ images; NSUInteger _ imageCount; BOOL _ isOrder;} @ end @ implementation RootViewController-(id) initWithNibName :( NSString *) nibNameOrNil bundle :( NSBundle *) nibBundleOrNil {self = [super initWithNibName: nibNameOrNil bundle: nibBundleOrNil]; if (self) {// Custom initialization _ isOrder = YES; [NSTimer Priority: 1 target: self selector: @ selector (changePage) userInfo: n Il repeats: YES]; self. titles = [NSMutableArray arrayWithObjects: @ "toutiao.com", @ "World Cup", @ "recommendation", @ "Entertainment", @ "Sports", @ "finance", nil]; self. labels = [NSMutableArray arrayWithObjects: @ "technology", @ "fashion", @ "car", @ "Real Estate", @ "easy moment", @ "game ", @ "CBA", @ "Mobile Phone", @ "digital", @ "original", @ "featured", @ "home", nil]; _ images = [NSMutableArray array]; for (int I = 0; I <6; I ++) {UIImage * image = [UIImage imageWithContentsOfFile: [[NSBundle mainBundle] pathForRes Ource: [NSString stringWithFormat: @ "v6_guide _ % d", I + 1] ofType: @ "png"]; [_ images addObject: image];} _ imageCount = _ images. count;} return self;}-(void) loadView {NewsView * newsView = [[NewsView alloc] initWithFrame: [UIScreen mainScreen]. bounds titles: self. titles images: _ images labels: self. labels]; newsView. backgroundColor = [UIColor whiteColor]; self. view = newsView;}-(void) viewDidLoad {[super v IewDidLoad]; // Do any additional setup after loading the view. UIScrollView * titleScrollView = (UIScrollView *) [self. view viewWithTag: 100]; titleScrollView. delegate = self; // for (int I = 0; I <_ titleCount; I ++) {// UIButton * title = (UIButton *) [self. view viewWithTag: 200 + I]; // [title addTarget: self action: @ selector (showLabel :) forControlEvents: UIControlEventTouchUpInside]; //} NewsView * news View = (NewsView *) self. view; newsView. imageView. scrollView. delegate = self; [newsView. imageView. pageControl addTarget: self action: @ selector (handlePageControl :) forControlEvents: UIControlEventValueChanged]; for (int I = 0; I <self. labels. count/4; I ++) {for (int j = 0; j <4; j ++) {FlagButton * label = (FlagButton *) [self. view viewWithTag: 600 + 4 * I + j]; [label addTarget: self action: @ selector (AddLabel :) forControlEvents: UIControlEventTouchUpInside] ;}}- (void) preview :( UIScrollView *) scrollView {UIScrollView * imageScrollView = (UIScrollView *) [self. view viewWithTag: 400]; UIPageControl * pageControl = (UIPageControl *) [self. view viewWithTag: 500]; int currentPage = imageScrollView. contentOffset. x/320; if (currentPage = 0) {// [imageScrollView scrollRectToVisible: CGRectMake (320 * _ imageCount, 0,320, imageScrollView. frame. size. height) animated: NO]; [imageScrollView setContentOffset: CGPointMake (320 * _ imageCount, 0) animated: NO]; pageControl. currentPage = _ imageCount-1;} else if (currentPage = _ imageCount + 1) {// [imageScrollView scrollRectToVisible: CGRectMake (320, 0,320, imageScrollView. frame. size. height) animated: NO]; [imageScrollView setContentOffs Et: CGPointMake (320, 0) animated: NO]; pageControl. currentPage = 0;} else {pageControl. currentPage = currentPage-1 ;}}- (void) handlePageControl :( UIPageControl *) pageControl {NSLog (@ "% d", pageControl. currentPage); UIScrollView * imageScrollView = (UIScrollView *) [self. view viewWithTag: 400]; // [imageScrollView scrollRectToVisible: CGRectMake (320 * (pageControl. currentPage + 1), 0,320, imageScrollView. Frame. size. height) animated: NO]; [imageScrollView setContentOffset: CGPointMake (320 * (pageControl. currentPage + 1), 0) animated: YES];}-(void) changePage {// single-Order Version/* NewsView * newsView = (NewsView *) self. view; int page = newsView. imageView. pageControl. currentPage; page ++; page = page> _ imageCount-1? 0: page; newsView. imageView. pageControl. currentPage = page; // [newsView. imageView. scrollView scrollRectToVisible: CGRectMake (320 * (page + 1), 0,320, newsView. imageView. scrollView. frame. size. height) animated: NO]; if (page) {[newsView. imageView. scrollView setContentOffset: CGPointMake (320 * (page + 1), 0) animated: YES];} else {[newsView. imageView. scrollView setContentOffset: CGPointMake (320 * (pa Ge + 1), 0) animated: NO];} * // dual-Order Version NewsView * newsView = (NewsView *) self. view; int page = newsView. imageView. pageControl. currentPage; if (_ isOrder) {page ++; page = page> _ imageCount-1? 0: page; if (! Page) {_ isOrder = NO; page = _ imageCount-2 ;}} else {page --; page = page <0? 0: page; if (! Page) {_ isOrder = YES; page = 0 ;}} newsView. imageView. pageControl. currentPage = page; [newsView. imageView. scrollView setContentOffset: CGPointMake (320 * (page + 1), 0) animated: YES];}-(void) addLabel :( FlagButton *) btn {NSLog (@ "% @", btn. currentTitle); NewsView * newsView = (NewsView *) self. view; [newsView. titleScrollView removeFromSuperview]; if (btn. flag) {[self. titles addObject: btn. currentTitle]; [NewsView setupTitleScrollView: self. titles]; btn. flag = NO;} else {[self. titles removeObject: btn. currentTitle]; [newsView setupTitleScrollView: self. titles]; btn. flag = YES;}-(void) didReceiveMemoryWarning {[super didreceivemorywarning]; // Dispose of any resources that can be recreated. if (! Self. view. window & [self isViewLoaded]) {self. view = nil ;}}- (void) dealloc {self. titles = nil; self. labels = nil; [super dealloc];}/* # pragma mark-Navigation // In a storyboard-based application, you will often want to do a little preparation before navigation-(void) prepareForSegue :( UIStoryboardSegue *) segue sender :( id) sender {// Get the new view controller using [segue destinationViewController]. // Pass the selected object to the new view controller .} */@ end // NewsView. h // Homework_163News /// Created by lanouhn on 14-8-30. // Copyright (c) 2014 vaercly@163.com Chen conglei. all rights reserved. // # import
   
    
# Import "LoopView. h "# import" FlagButton. h "@ interface NewsView: UIView @ property (nonatomic, retain) NSMutableArray * labels; @ property (nonatomic, retain) NSMutableArray * titles; @ property (nonatomic, retain) LoopView * imageView; @ property (nonatomic, retain) UIScrollView * titleScrollView; @ property (nonatomic, retain) FlagButton * aLabel;-(void) setupTitleScrollView :( NSMutableArray *) titles;-(id) initWithFrame :( CGRect) frame titles :( NSMutableArray *) titles images :( NSMutableArray *) images labels :( NSMutableArray *) labels; @ end // NewsView. m // Homework_163News /// Created by lanouhn on 14-8-30. // Copyright (c) 2014 vaercly@163.com Chen conglei. all rights reserved. // # import "NewsView. h "@ interface NewsView () {variables * _ images; NSUInteger _ titlesCount; NSUInteger _ imagesCount; NSUInteger _ labelsCount;} @ end @ implementation NewsView-(id) initWithFrame :( CGRect) frame {self = [super initWithFrame: frame]; if (self) {// Initialization code [self setupRedView]; [self setupTitleScrollView: self. titles]; [self setupImageView]; [self setupLabelView];} return self;}-(id) initWithFrame :( CGRect) frame titles :( NSMutableArray *) titles images :( NSMutableArray *) images labels :( NSMutableArray *) labels {self. titles = titles; _ images = images; self. labels = labels; _ imagesCount = images. count; _ labelsCount = labels. count; [self initWithFrame: frame]; return self;}-(void) setupRedView {UIView * redView = [[UIView alloc] initWithFrame: CGRectMake (0, 0,320, 60)]; redView. backgroundColor = [UIColor colorWithRed: 1.0 green: 0.1 blue: 0 alpha: 0.5]; [self addSubview: redView]; [redView release]; UILabel * topical = [[UILabel alloc] initWithFrame: CGRectMake (130, 20, 70, 30)]; topical. text = @ "Netease News"; [redView addSubview: topical]; [topical release]; UIButton * add = [UIButton buttonWithType: UIButtonTypeSystem]; add. frame = CGRectMake (280, 28, 25, 25); [add setTitle: @ "+" forState: UIControlStateNormal]; [add setTitleColor: [UIColor blueColor] forState: UIControlStateNormal]; add. titleLabel. font = [UIFont systemFontOfSize: 40]; [redView addSubview: add]; [add release];}-(void) setupTitleScrollView :( NSMutableArray *) titles {self. titles = titles; _ titlesCount = titles. count; // int width = (320-5 * (_ titlesCount + 1)/_ titlesCount; int width = 47; self. titleScrollView = [[UIScrollView alloc] initWithFrame: CGRectMake (0, 60,320, 40)]; _ titleScrollView. backgroundColor = [UIColor colorWithRed: 0.6 green: 0.1 blue: 0.0 alpha: 0.2]; _ titleScrollView. userInteractionEnabled = YES; _ titleScrollView. showsHorizontalScrollIndicator = NO; _ titleScrollView. tag = 100; _ titleScrollView. contentSize = CGSizeMake (320 + _ titlesCount * width, _ titleScrollView. bounds. size. height); _ titleScrollView. pagingEnabled = YES; [self addSubview: _ titleScrollView]; [_ titleScrollView release]; int x = 5; for (int I = 0; I <_ titlesCount; I ++) {UIButton * title = [UIButton buttonWithType: UIButtonTypeSystem]; title. frame = CGRectMake (x, 5, width, 30); UIView * line = [[UIView alloc] initWithFrame: CGRectMake (x, title. frame. origin. y + title. frame. size. height, width, 2)]; title. userInteractionEnabled = YES; title. tag = 200 + I; line. tag= 300 + I; title. titleLabel. font = [UIFont systemFontOfSize: 15]; [title setTitle: self. titles [I] forState: UIControlStateNormal]; [title setTitleColor: [UIColor blackColor] forState: UIControlStateNormal]; x + = width + 5; [title addTarget: self action: @ selector (showLabel :) forControlEvents: UIControlEventTouchUpInside]; [self. titleScrollView addSubview: title]; [self. titleScrollView addSubview: line]; [line release] ;}}- (void) showLabel :( UIButton *) btn {UILabel * line = (UILabel *) [self viewWithTag: btn. tag + 100]; for (int I = 0; I <self. titles. count; I ++) {UILabel * otherLine = (UILabel *) [self viewwithtag: 300 + I]; otherLine. backgroundColor = [UIColor clearColor];} line. backgroundColor = [UIColor redColor];}-(void) setupImageView {self. imageView = [[LoopView alloc] initWithFrame: CGRectMake (0,100,320,280) images: _ images]; [self addSubview: _ imageView]; [_ imageView release];}-(void) setupLabelView {UILabel * addLabel = [[UILabel alloc] initWithFrame: CGRectMake (0,380,320, 50)]; addLabel. backgroundColor = [UIColor colorWithRed: 0.6 green: 0.1 blue: 0.0 alpha: 0.2]; addLabel. text = @ "Add Tag"; [self addSubview: addLabel]; [addLabel release]; for (int I = 0; I <_ labelsCount/4; I ++) {for (int j = 0; j <4; j ++) {self. aLabel = [FlagButton buttonWithType: UIButtonTypeSystem]; _ aLabel. flag = YES; _ aLabel. frame = CGRectMake (5 + j * 80,450 + I * 40, 73, 20); _ aLabel. backgroundColor = [UIColor lightGrayColor]; _ aLabel. tag = 600 + 4 * I + j; _ aLabel. layer. cornerRadius = 2; [_ aLabel setTitle: self. labels [4 * I + j] forState: UIControlStateNormal]; [_ aLabel setTitleColor: [UIColor blackColor] forState: UIControlStateNormal]; _ aLabel. titleLabel. font = [UIFont systemFontOfSize: 18]; [self addSubview: _ aLabel] ;}}- (void) dealloc {self. aLabel = nil; self. labels = nil; self. titles = nil; self. imageView = nil; self. titleScrollView = nil; [super dealloc];}/* // Only override drawRect: if you perform custom drawing. // An empty implementation adversely affects performance during animation. -(void) drawRect :( CGRect) rect {// Drawing code} */@ end /// LoopView. h // Test_LoopScrollView /// Created by lanouhn on 14-8-30. // Copyright (c) 2014 vaercly@163.com Chen conglei. all rights reserved. // # import
    
     
@ Interface LoopView: UIView @ property (nonatomic, retain) UIScrollView * scrollView; @ property (nonatomic, retain) UIPageControl * pageControl;-(id) initWithFrame :( CGRect) frame images :( NSMutableArray *) images; @ end /// LoopView. m // Test_LoopScrollView /// Created by lanouhn on 14-8-30. // Copyright (c) 2014 vaercly@163.com Chen conglei. all rights reserved. // # import "LoopView. h "@ interface LoopView () {NSMutableArray * _ images; NSUInteger _ imagesCount;} @ end @ implementation LoopView-(id) initWithFrame :( CGRect) frame {self = [super initWithFrame: frame]; if (self) {// Initialization code [self setupScrollView]; [self setupPageControl];} return self ;}- (id) initWithFrame :( CGRect) frame images :( NSMutableArray *) images {_ images = images; _ imagesCount = images. count; [self initWithFrame: frame]; return self;}-(void) setupScrollView {self. scrollView = [[UIScrollView alloc] initWithFrame: [UIScreen mainScreen]. bounds]; _ scrollView. tag = 400; _ scrollView. contentSize = CGSizeMake (320 * (_ imagesCount + 2), [UIScreen mainScreen]. bounds. size. height); // [_ scrollView scrollRectToVisible: CGRectMake (320,0, 320, [UIScreen mainScreen]. bounds. size. height) animated: NO]; [_ scrollView setContentOffset: CGPointMake (320, 0) animated: NO]; _ scrollView. showsHorizontalScrollIndicator = NO; _ scrollView. pagingEnabled = YES; [self addSubview: _ scrollView]; [_ scrollView release]; for (int I = 0; I <_ imagesCount + 2; I ++) {UIImageView * imageView = [[UIImageView alloc] initWithFrame: CGRectMake (320 * I, 0,320, self. frame. size. height)]; if (I = 0) {imageView. image = [UIImage imageNamed: @ "v6_guide_6"];} else if (I = _ imagesCount + 1) {imageView. image = [UIImage imageNamed: @ "v6_guide_1"];} else {imageView. image = _ images [I-1];} [_ scrollView addSubview: imageView]; [imageView release];}-(void) setupPageControl {self. pageControl = [[UIPageControl alloc] initWithFrame: CGRectMake (10, self. frame. size. height-40,300, 20)]; _ pageControl. tag = 500; _ pageControl. numberOfPages = 6; _ pageControl. currentPage = 0; _ pageControl. pageIndicatorTintColor = [UIColor grayColor]; _ pageControl. currentPageIndicatorTintColor = [UIColor orangeColor]; [self addSubview: _ pageControl]; [_ pageControl release];}-(void) dealloc {self. scrollView = nil; self. pageControl = nil; [super dealloc];}/* // Only override drawRect: if you perform custom drawing. // An empty implementation adversely affects performance during animation. -(void) drawRect :( CGRect) rect {// Drawing code} */@ end /// FlagButton. h // Homework_163News /// Created by lanouhn on 14-8-30. // Copyright (c) 2014 vaercly@163.com Chen conglei. all rights reserved. // # import
     
      
@ Interface FlagButton: UIButton @ property (nonatomic, assign) BOOL flag; @ end