樓主項目中需要有一個輪播圖，因為比較簡單，就自己寫了個，因為是從網上弄得圖片 所以用了SDWebImage 這個三方庫 當然自己也可以去掉
類型后面有*號 如用使用 請自行加上。。。。。
代碼：.h 文件
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@protocol TJXViewDelegate<NSObject>//判斷點擊的那個-(void)sendImageName:(TJXView *)TJXView andName:(NSInteger)selectImage;@end@interface TJXView : UIView@property (nonatomic,weak)id<TJXViewDelegate>delegate;//傳一個frame 和 裝有圖片名字的數組過來//參數一：frame//參數二：裝有圖片名字的數組//參數三：BOOL如果是YES，那么自動滾動，如果是NO不滾動-(id)initWithFrame:(CGRect)frame andImageNameArray:(NSMutableArray * )imageNameArray andIsRunning:(BOOL)isRunning;@end |
.m文件
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@interface TJXView()<UIScrollViewDelegate>{ NSInteger _currentPage; //記錄真實的頁碼數 NSTimer *_timer; //生命一個全局變量}@property (nonatomic,assign) BOOL isRun;@property (nonatomic,strong) NSMutableArray *imageArray;//存儲圖片的名字@property (nonatomic,strong) UIScrollView *scrollView;@property (nonatomic,strong) UIPageControl *pageControl;@property (nonatomic,assign) CGFloat width;//view的寬@property (nonatomic,assign) CGFloat height;//view的高@end-(id)initWithFrame:(CGRect)frame andImageNameArray:(NSMutableArray *)imageNameArray andIsRunning:(BOOL)isRunning{ self = [super initWithFrame:frame]; if (self) { _width = self.frame.size.width; _height = self.frame.size.height; //arrayWithArray 把數組中的內容放到一個數組中返回 self.imageArray = [NSMutableArray arrayWithArray:imageNameArray]; //在數組的尾部添加原數組第一個元素 [self.imageArray addObject:[imageNameArray firstObject]]; //在數組的首部添加原數組最后一個元素 [self.imageArray insertObject:[imageNameArray lastObject] atIndex:0]; self.isRun = isRunning; _currentPage = 0; [self createSro]; [self createPageControl]; [self createTimer]; } return self;}-(void)createTimer{ if (_isRun == YES) { _timer = [NSTimer scheduledTimerWithTimeInterval:2 target:self selector:@selector(change) userInfo:nil repeats:YES ]; [[NSRunLoop currentRunLoop]addTimer:_timer forMode:NSRunLoopCommonModes]; }}-(void)change{ //1獲得當前的點 CGPoint point = _scrollView.contentOffset; //2求得將要變換的點 CGPoint endPoint = CGPointMake(point.x+_width, 0); //判斷 if (endPoint.x == (self.imageArray.count-1)*_width) { [UIView animateWithDuration:0.25 animations:^{ _scrollView.contentOffset = CGPointMake(endPoint.x, 0); } completion:^(BOOL finished) { //動畫完成的block _scrollView.contentOffset = CGPointMake(_width, 0); CGPoint realEnd = _scrollView.contentOffset; //取一遍頁碼數 _currentPage = realEnd.x/_width; _pageControl.currentPage = _currentPage-1; }]; } else{ //0.25s中更改一個圖片 [UIView animateWithDuration:0.25 animations:^{ _scrollView.contentOffset = endPoint; } completion:^(BOOL finished) { }]; CGPoint realEnd = _scrollView.contentOffset; //取一遍頁碼數 _currentPage = realEnd.x/_width; _pageControl.currentPage = _currentPage-1; } }//創建頁碼指示器-(void)createPageControl{ _pageControl = [[UIPageControl alloc]initWithFrame:CGRectMake(_width-200, _height-30, 100, 30)]; _pageControl.centerX = _width/2; _pageControl.numberOfPages = self.imageArray.count-2; _pageControl.pageIndicatorTintColor = WP_GRAY_COLOR; _pageControl.currentPageIndicatorTintColor = [UIColor whiteColor]; _pageControl.userInteractionEnabled = NO; [self addSubview:_pageControl];}//創建滾動視圖-(void)createSro{ _scrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, _width, _height)]; _scrollView.contentSize = CGSizeMake(_width*self.imageArray.count, _height); for (int i = 0; i < self.imageArray.count; i++) { UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(i*_width, 0, _width, _height)];// imageView.image = [UIImage imageNamed:self.imageArray[i]]; [imageView sd_setImageWithURL:self.imageArray[i] placeholderImage:[UIImage imageNamed:@"home_banner_blank"]]; imageView.userInteractionEnabled = YES; imageView.tag = 200+i; UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tap:)]; [imageView addGestureRecognizer:tap]; [_scrollView addSubview:imageView]; } //水平指示條不顯示 _scrollView.showsHorizontalScrollIndicator = NO; //關閉彈簧效果 _scrollView.bounces = NO; //設置用戶看到第一張 _scrollView.contentOffset = CGPointMake(_width, 0); //設置代理 _scrollView.delegate = self; //分頁效果 _scrollView.pagingEnabled = YES; [self addSubview:_scrollView];}-(void)tap:(UITapGestureRecognizer *)tap{ if(_delegate&&[_delegate respondsToSelector:@selector(sendImageName:andName:)]){ [_delegate sendImageName:self andName:tap.view.tag-201]; }else{ NSLog(@"沒有設置代理或者沒有事先協議的方法"); } }#pragma mark UIScrollViewDelegate//停止滾動-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{ if (_timer) { [_timer setFireDate:[NSDate dateWithTimeIntervalSinceNow:2]]; } //圖片的個數 1 2 3 4 5 6 7 8 //真實的頁碼 0 1 2 3 4 5 6 7 //顯示的頁碼 0 1 2 3 4 5 CGPoint point = _scrollView.contentOffset; if (point.x == (self.imageArray.count-1)*_width) { scrollView.contentOffset = CGPointMake(_width, 0); } if (point.x == 0) { scrollView.contentOffset = CGPointMake((self.imageArray.count-2)*_width, 0); } //取一遍頁碼數 CGPoint endPoint = scrollView.contentOffset; _currentPage = endPoint.x/_width; _pageControl.currentPage = _currentPage-1;}//手指開始觸摸的時候，停止計時器-(void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{ if (_timer) { //如果有，停掉 [_timer setFireDate:[NSDate distantFuture]]; }} |
在項目中 導入頭文件 遵守代理
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TJXView * TJXView = [[TJXView alloc]initWithFrame:CGRectMake(0, 0, WPSCREEN_WIDTH, 100*WPSCREEN_HIGTH_RATIO) andImageNameArray:self.bannerImager andIsRunning:YES]; TJXView.delegate = self; [self.view addSubview: TJXView];#pragma mark TJXViewDelegate-(void)sendImageName:(TJXView *) TJXView andName:(NSInteger)selectImage{ KKLog(@"%ld",(long)selectImage);} |
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持服務器之家。
原文鏈接：http://www.jianshu.com/p/87bf767f8c4e
