newsScrollView=[[UIScrollView alloc]initWithFrame:CGRectMake(0, 40, SCREEN_WIDTH, 200)];

    newsScrollView.contentSize=CGSizeMake(SCREEN_WIDTH*3, 200);

    newsScrollView.contentOffset=CGPointMake(SCREEN_WIDTH, 0);

    newsScrollView.pagingEnabled=true;

    newsScrollView.scrollEnabled=true;

    newsScrollView.showsHorizontalScrollIndicator=false;

    [self addSubview:newsScrollView];

    int i=0;

    maskInfos=[[NSMutableArray alloc]init];

    for (NSDictionary *item in _newsInfos) {

        NSString *imageName=[item valueForKey:@"image"];

        NSString *info=[item valueForKey:@"info"];

        [maskInfos addObject:info];

        UIImageView *imageView=[[UIImageView alloc]initWithFrame:CGRectMake(SCREEN_WIDTH*i++, 0, SCREEN_WIDTH, 200)];

        imageView.image=[UIImage imageNamed:imageName];

        imageView.contentMode=UIViewContentModeScaleAspectFill;

        [newsScrollView addSubview:imageView];

    }

    //添加蒙版

    maskView=[[MaskView alloc]initWithFrame:CGRectMake(0, 220, SCREEN_WIDTH, 20)];

    [self addSubview:maskView];