IOS 设置消息上下滚动，消息循环滚动视图

#import "NewsView.h"

@interface ViewController (){
NSArray *rssArray;
}
@property (strong, nonatomic) NewsView *newsView;
@end

@implementation ViewController
@synthesize newsView;

static int countInt=0;
static NSString *notice_index;
- (void)viewDidLoad {
[super viewDidLoad];
newsView=[[NewsView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 320.0f, 100.0f)];
[self.view addSubview:newsView];

rssArray=parkEntity.notice_rows;
notice_index=[[rssArray objectAtIndex:0] objectForKey:@"id"];
[newsView.titleLabel setText:[[rssArray objectAtIndex:countInt] objectForKey:@"title"]];
[newsView.descriptionLabel setText:@"TESTDESCRIPTION"];
[newsView.newsButton addTarget:self action:@selector(topNewsInfoClicked:) forControlEvents:UIControlEventTouchUpInside];
[UIView animateWithDuration:0.7 delay:0 options:0 animations:^(){
newsView.alpha = 0.2;
[newsView exchangeSubviewAtIndex:1 withSubviewAtIndex:0];
newsView.alpha = 1;
} completion:^(BOOL finished){
//设置定时器
[NSTimer scheduledTimerWithTimeInterval:4 target:self selector:@selector(displayNews) userInfo:nil repeats:YES];
}];
}

-(void)displayNews{
countInt++;
//    long num = [rssArray count] >= 3 ? 3:[rssArray count];
if (countInt >= [rssArray count])
countInt=0;
CATransition *animation = [CATransition animation];
animation.delegate = self;
animation.duration = 0.5f ;
animation.timingFunction = UIViewAnimationCurveEaseInOut;
animation.fillMode = kCAFillModeForwards;
animation.removedOnCompletion = YES;
animation.type = @"cube";

notice_index=[[rssArray objectAtIndex:countInt] objectForKey:@"id"];

[newsView.layer addAnimation:animation forKey:@"animationID"];
[newsView setViewWithTitle:[[rssArray objectAtIndex:countInt] objectForKey:@"title"] description:@"test"];
}
-(void)topNewsInfoClicked:(id)sender{
WebViewController *vc = [[WebViewController alloc] init];
vc.url = [NSString stringWithFormat:@"%@%@",PARKNOTICE_URL,notice_index];
vc.vcTitle = [[rssArray objectAtIndex:countInt] objectForKey:@"title"];
[self.navigationController pushViewController:vc animated:YES];
}
@end

//NewsView.h
//
//  NewsView.h
//  Created by Jack on 15-10-23.
//  Copyright (c) 2015年 Demo. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface NewsView : UIView
@property (retain, nonatomic) UILabel *titleLabel;
@property (retain, nonatomic) UILabel *descriptionLabel;
@property (retain, nonatomic) UIButton *newsButton;

-(void)setViewWithTitle:(NSString *)title description:(NSString *)description;
@end

//  NewsView.m
//  Created by Jack on 15-10-23.
//  Copyright (c) 2015年 Demo. All rights reserved.
//
#import "NewsView.h"
@implementation NewsView
@synthesize titleLabel;
@synthesize descriptionLabel;
@synthesize newsButton;
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
//[self setBackgroundColor:[UIColor grayColor]];
titleLabel=[[UILabel alloc] initWithFrame:CGRectMake(0, 2, 211, 21)];
titleLabel.textColor=[UIColor grayColor];
titleLabel.backgroundColor=[UIColor clearColor];
titleLabel.font=[UIFont boldSystemFontOfSize:13.0];
//        titleLabel.lineBreakMode = UILineBreakModeWordWrap;
titleLabel.lineBreakMode = UILineBreakModeTailTruncation;
titleLabel.numberOfLines = 1;
[self addSubview:titleLabel];
descriptionLabel=[[UILabel alloc] initWithFrame:CGRectMake(0, 17, 260, 15)];
descriptionLabel.textColor=[UIColor blackColor];
descriptionLabel.backgroundColor=[UIColor clearColor];
descriptionLabel.font=[UIFont systemFontOfSize:11.0];
descriptionLabel.lineBreakMode = UILineBreakModeWordWrap;
descriptionLabel.numberOfLines = 1;
[self addSubview:descriptionLabel];
newsButton=[UIButton buttonWithType:UIButtonTypeCustom];
[newsButton setFrame:CGRectMake(0, 0, frame.size.width, frame.size.height)];
[self addSubview:newsButton];
}
return self;
}
-(void)dealloc{
//    [titleLabel release];
//    [descriptionLabel release];
//    [super dealloc];
}
-(void)setViewWithTitle:(NSString *)title description:(NSString *)description{
[titleLabel setText:title];
[descriptionLabel setText:description];
}
@end