封装跑马灯

//blean为yes 就是点击上面一个label no就是点击下面一个label
typedef void(^showLableClickBlock)(BOOL ,NSString *);

@interface runView : UIView

- (instancetype)initWithTitleArray:(NSArray *)titleArray;

@property (nonatomic ,copy)showLableClickBlock ClickBlock;

UI布局

- (void)setUpUI
{
    
    if (self.headlinesView == nil)
    {
        self.headlinesView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, KLSCREEN_WIDTH, 70)];
        self.headlinesView.backgroundColor = [UIColor grayColor];
        [self addSubview:self.headlinesView];
       
        
        UIImageView *icon = [[UIImageView alloc] initWithFrame:CGRectMake(10, 12, 64, 16)];
        icon.image = [UIImage imageNamed:@"headlines_icon"];
        icon.userInteractionEnabled = YES;
        [self.headlinesView addSubview:icon];
    

        
        self.allViewsContentView =[[UIView alloc] initWithFrame:CGRectMake(CGRectGetMaxX(icon.frame)+10, 0, KLSCREEN_WIDTH - CGRectGetMaxX(icon.frame) - 10 - 5, 70)];
        
        self.allViewsContentView.userInteractionEnabled = YES;
        [self.headlinesView addSubview: self.allViewsContentView];
  
        
        //立即出现的View
        self.showView = [[ContentView alloc] initWithFrame:CGRectMake(0, 0, CGRectGetWidth(self.allViewsContentView.frame), 70)];
        self.showView.delegate = self;
//        self.showView.backgroundColor = [UIColor grayColor];
        [self.allViewsContentView addSubview:self.showView];
  
        
        //即将出现的view
        self.WillshowView = [[ContentView alloc] initWithFrame:CGRectMake(0, 70,CGRectGetWidth(self.allViewsContentView.frame) , 70)];
//        self.WillshowView.backgroundColor = [UIColor grayColor];
        [self.allViewsContentView  addSubview:self.WillshowView];
  
        

        if (_titleArray && [_titleArray isKindOfClass:[NSArray class]] && _titleArray.count >= 2)
        {
            [self settingHeadlinesLabel:0];
            
            if (_titleArray.count <=2) {
                [self removeRotionTimer];
                
            }else{
                
                [self settingWillHeadlinesLabel:_showHeadlinesIndex];
                [self addRotationTimer];
            }
            
        }

    }
}

属性

#import "Masonry.h"
#import "ContentView.h"

@interface runView ()
<ContentViewDegate>

@property(nonatomic,strong)NSArray       *titleArray;
@property(nonatomic, strong)UIView       *allViewsContentView;
@property(nonatomic, strong)UIView       *headlinesView;
@property(nonatomic, assign)NSInteger    showHeadlinesIndex;
@property(nonatomic, assign)NSInteger    CurrentHeadlinesIndex;
@property(nonatomic,strong)NSTimer       *timer;
@property(nonatomic, strong)ContentView *showView; //出现的view
@property(nonatomic, strong)ContentView *WillshowView; //即将出现的view
@end

#define KLSCREEN_WIDTH               ([UIScreen mainScreen].bounds.size.width)
#define KLSCREEN_HEIGHT              ([UIScreen mainScreen].bounds.size.height)

@implementation runView
- (instancetype)initWithTitleArray:(NSArray *)titleArray
{
    if (self = [super init]) {
        self.titleArray = titleArray;
        
        [self setUpUI];
        
    }
    return self;
}

定时器

#pragma mark -移除定时器
- (void)removeRotionTimer
{
    if (self.timer) {
        [self.timer invalidate];
        self.timer = nil;
    }
    
}

#pragma mark -添加定时器
- (void)addRotationTimer
{
    if (self.timer) return;
    self.timer = [NSTimer scheduledTimerWithTimeInterval:1.5 target:self selector:@selector(switchHeadLines) userInfo:nil repeats:YES];
    [[NSRunLoop mainRunLoop] addTimer:self.timer forMode:NSRunLoopCommonModes];
    
}

动画 赋值顺序

#pragma mark -动画
- (void)switchHeadLines
{
    if (self.showHeadlinesIndex >= self.titleArray.count)
    {
        self.showHeadlinesIndex = 0;
    }

    CGRect bounds = self.allViewsContentView.bounds;
    CGRect bounds1 = bounds;
    bounds.origin.y = 70;
    CGRect bounds2 = bounds;
    
    [UIView animateWithDuration:0.5 animations:^{
    
        self.allViewsContentView.bounds = bounds2;
        
        } completion:^(BOOL finished) {
            
            [self settingHeadlinesLabel:_CurrentHeadlinesIndex];
            
            [self settingWillHeadlinesLabel:_showHeadlinesIndex];
            
        self.allViewsContentView.bounds = bounds1;
    }];

}

#pragma mark -检测title数组是否越界和界限值的处理 归0
- (void)checkHeadlinesIndexBounds
{
    self.showHeadlinesIndex ++;
    if (self.showHeadlinesIndex >= self.titleArray.count)
    {
        self.showHeadlinesIndex = 0;
    }
}

#pragma mark -显示的view赋值
- (void)settingHeadlinesLabel:(NSInteger)index;
{
    _showHeadlinesIndex = index;
    //0 // 2
    [self.showView settingUpLabel:self.titleArray[_showHeadlinesIndex]];
    [self checkHeadlinesIndexBounds];
 
    //1 // 3
    [self.showView settingDownLabel:self.titleArray[_showHeadlinesIndex]];
    [self checkHeadlinesIndexBounds];
    
    //_c_CurrentHeadlinesIndex = 2 // 4
    _CurrentHeadlinesIndex = _showHeadlinesIndex;
    
}
#pragma mark -即将显示的view赋值
- (void)settingWillHeadlinesLabel:(NSInteger)index;
{
    //_showHeadlinesIndex =2
    [self.WillshowView settingUpLabel:self.titleArray[_showHeadlinesIndex]];
    [self checkHeadlinesIndexBounds];
    
    //_showHeadlinesIndex = 3;
    [self.WillshowView settingDownLabel:self.titleArray[_showHeadlinesIndex]];
    
}