RoateView，createview

RoateView，createview

 1 #import <UIKit/UIKit.h> 2  3 typedef void(^Click)(NSInteger index); 4  5 @interface SLRoateView : UIView 6 /* 7  // tableView 中cell的複用機制始終沒整出來 所以現在只能放image 放tableview沒有意義 因為怎麼都要建立數組這麼多個tableview 8 { 9 // 當scrollView裝載的別的View 而不是imageView 比如一些App中scrollVeiw上放的的tableView 等等用以分類展示的view 像愛奇藝首頁的電影、電視、綜藝、動漫 這樣就不允許有輪播和點擊屬性10 11 // 是否允許輪播 預設允許 NO12 @property(nonatomic, assign)BOOL AllowCarousel;13 14 // 是否支援點擊 只需判斷block 是否為空白 為空白則不添加手勢15 @property(nonatomic, assign)BOOL SupportInteraction;16 }17 */18 // 建立19 + (SLRoateView *)roateViewWithFrame:(CGRect)frame array:(NSArray *)array click:(Click)click;20 21 //- (instancetype)initWithFrame:(CGRect)frame array:(NSArray *)array click:(Click)click;22 23 @end

#import "SLRoateView.h"@interface SLRoateView ()<UIScrollViewDelegate>@property(nonatomic, strong)NSArray *array;@property(nonatomic, copy)Click click;@property(nonatomic, assign)CGFloat KRoateWidth;@property(nonatomic, assign)CGFloat KRoateHeight;@property(nonatomic, strong)UIImageView *leftImageView;@property(nonatomic, strong)UIImageView *centerImageView;@property(nonatomic, strong)UIImageView *rightImageView;@property(nonatomic, assign)NSInteger index;@property(nonatomic, strong)UIPageControl *pageControl;@property(nonatomic, strong)NSTimer *timer;@property(nonatomic, strong)UIScrollView *scroll;@end@implementation SLRoateView+ (SLRoateView *)roateViewWithFrame:(CGRect)frame array:(NSArray *)array click:(Click)click{    SLRoateView *roateView = [[SLRoateView alloc]initWithFrame:frame array:array click:click];    return roateView;}- (instancetype)initWithFrame:(CGRect)frame array:(NSArray *)array click:(Click)click{    self = [super initWithFrame:frame];    if (self) {        self.KRoateWidth = frame.size.width;        self.KRoateHeight = frame.size.height;        self.array = array;        self.click = click;        // scrollVeiw 設定        self.scroll = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, _KRoateWidth, _KRoateHeight)];        self.scroll.contentSize = CGSizeMake(_KRoateWidth * 3, 0);        self.scroll.pagingEnabled = YES;        self.scroll.contentOffset = CGPointMake(_KRoateWidth, 0);        self.scroll.alwaysBounceVertical = NO;        self.scroll.showsVerticalScrollIndicator = NO;        self.scroll.alwaysBounceHorizontal = YES;        self.scroll.showsHorizontalScrollIndicator = NO;        self.scroll.delegate = self;        [self addSubview:_scroll];                [self addGestureRecognizer];        [self addImageViews];        [self setDefautImage];        [self addPageControl];                [self addTimer];    }    return self;}#pragma mark 添加計時器- (void)addTimer{    // 在子線程中建立一個計時器 是圖片實現輪播    dispatch_async(dispatch_get_global_queue(0, 0), ^{        _timer = [NSTimer timerWithTimeInterval:3 target:self selector:@selector(rotaView) userInfo:nil repeats:YES];        [[NSRunLoop currentRunLoop] addTimer:_timer forMode:NSRunLoopCommonModes];                [[NSRunLoop currentRunLoop] run];            });}- (void)rotaView{    [_scroll setContentOffset:CGPointMake(_KRoateWidth * 2, 0) animated:YES];    NSLog(@"%ld", _index);    // 設定分頁 由於動畫是從中間移動到第三張 所以pageControl要顯示的不是中間圖片而是第三張圖片    _pageControl.currentPage = (_index + 1) % _array.count;    if (_scroll.contentOffset.x/_KRoateWidth == 2)    {        [self reloadImage];        // scrollView 回到中間        [self.scroll setContentOffset:CGPointMake(_KRoateWidth, 0) animated:NO];    }}#pragma mark 添加點擊事件- (void)addGestureRecognizer{    [self addGestureRecognizer:[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapGestureRecognizer)]];}- (void)tapGestureRecognizer{    if (_click)    {        // 用當前的        self.click(_pageControl.currentPage);    }    }#pragma mark 添加圖片控制項- (void)addImageViews{    _leftImageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, _KRoateWidth, _KRoateHeight)];    // imageView 大小不會改變 UIViewContentModeScaleAspectFit 只是image大小變化了//    _leftImageView.contentMode = UIViewContentModeScaleAspectFit;    [self.scroll addSubview:_leftImageView];        _centerImageView = [[UIImageView alloc]initWithFrame:CGRectMake(_KRoateWidth, 0, _KRoateWidth, _KRoateHeight)];//    _centerImageView.contentMode = UIViewContentModeScaleAspectFit;    [self.scroll addSubview:_centerImageView];    _rightImageView = [[UIImageView alloc]initWithFrame:CGRectMake(_KRoateWidth * 2, 0, _KRoateWidth, _KRoateHeight)];//    _rightImageView.contentMode = UIViewContentModeScaleAspectFit;    [self.scroll addSubview:_rightImageView];    NSLog(@" %f %f %f", _leftImageView.frame.size.height, _centerImageView.frame.size.height, _rightImageView.frame.size.height);}#pragma mark 設定預設顯示圖片- (void)setDefautImage{    _leftImageView.image = _array[_array.count - 1];    _centerImageView.image = _array[0];    _rightImageView.image = _array[1];    _index = 0;    _pageControl.currentPage = _index;}#pragma mark 添加分頁控制項- (void)addPageControl{        // 根據頁數放回UIPageControl合適的大小 返回（0，0）不知道為啥 ----先要建立出來再給frame    _pageControl = [[UIPageControl alloc]init];    CGSize size = [_pageControl sizeForNumberOfPages:_array.count];    _pageControl.frame = CGRectMake(0, 0, size.width, size.height);    _pageControl.center = CGPointMake(_KRoateWidth / 2, _KRoateHeight - size.height/2);    _pageControl.numberOfPages = _array.count;    [self addSubview:_pageControl];}//#pragma mark 拖拽事件//- (void)scrollViewDidScroll:(UIScrollView *)scrollView//{//    if (scrollView.isDragging)//    {//        NSLog(@"關閉定時器");//        [_timer setFireDate:[NSDate distantFuture]];//    }//    if (!scrollView.isDragging)//    {//        NSLog(@"asdfasdf");//    }//}#pragma mark 滾動停止事件- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{    // 5秒後啟動計時器    [_timer performSelector:@selector(setFireDate:) withObject:[NSDate distantPast] afterDelay:5];    [self reloadImage];    // scrollView 回到中間    [self.scroll setContentOffset:CGPointMake(_KRoateWidth, 0) animated:NO];        // 設定分頁    _pageControl.currentPage = _index;    }#pragma mark 重新載入圖片- (void)reloadImage{    NSInteger leftIndex, rigtIndex;    CGPoint offset = self.scroll.contentOffset;    if (offset.x > _KRoateWidth)    {        _index = (_index + 1) % _array.count;    }else if (offset.x < _KRoateWidth)    {        _index = (_index + _array.count - 1) % _array.count;    }    _centerImageView.image = _array[_index];        leftIndex = (_index + _array.count - 1) % _array.count;    rigtIndex = (_index + 1) % _array.count;    _leftImageView.image = _array[leftIndex];    _rightImageView.image = _array[rigtIndex];}- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{    if (scrollView.isDragging)    {        // 取消timer之前的執行請求        [NSObject cancelPreviousPerformRequestsWithTarget:_timer];        // 關閉定時器        [_timer setFireDate:[NSDate distantFuture]];            }}