启动图后面加入别的启动图片

最新推荐文章于 2024-06-21 23:22:24 发布

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最新推荐文章于 2024-06-21 23:22:24 发布

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分类专栏： ios开发入门

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本文介绍了一个iOS应用中Tabbar启动广告的加载方法。通过检查本地是否存在预设的广告图片，若存在则直接加载显示，并在3秒后移除；若不存在，则从指定URL下载广告图片，保存至本地后进行显示。

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在Tabbar中加入方法

-(void)initAdvView{
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
    NSString *filePath = [[paths objectAtIndex:0] stringByAppendingPathComponent:[NSString stringWithFormat:@"loading.png"]];
    NSLog(@"filePath:  %@",filePath);
    NSFileManager *fileManager = [NSFileManager defaultManager];
    BOOL isDir = FALSE;
    BOOL isExit = [fileManager fileExistsAtPath:filePath isDirectory:&isDir];
    if (isExit) {
        NSLog(@"存在");
        _advImage = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, BOUNDS.size.width, BOUNDS.size.height)];
        [_advImage setImage:[UIImage imageWithContentsOfFile:filePath]];
        [self.view addSubview:_advImage];
        [self performSelector:@selector(removeAdvImage) withObject:nil afterDelay:3];


        dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
            //加载启动广告并保存到本地沙盒，因为保存的图片较大，每次运行都要保存，所以注掉了
            [self getLoadingImage];
        });
    }else{
        NSLog(@"不存在");
        dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
            [self getLoadingImage];
        });
    }
}


-(void)getLoadingImage{
    NSString *urlStr = @"http://app.nuomi.com/naserver/item/splashpage?appid=ios&bduss=&channel=com_dot_apple&cityid=100010000&cuid=11a2e62839f7bed05437dcb826be61a0c47a515c&device=iPhone&ha=5&lbsidfa=ACAF9226-F987-417B-A708-C95D482A732D&location=39.989360%2C116.324490&logpage=Home&net=unknown&os=8.2&sheight=1334&sign=40c974d176568886ad0e72516645e23f&swidth=750&terminal_type=ios&timestamp=1442906717563&tn=ios&uuid=11a2e62839f7bed05437dcb826be61a0c47a515c&v=5.13.0";
[NetMannager requestWithUrlString:urlStr parms:nil responseType:@"text/html" finishedBlock:^(AFHTTPRequestOperation *operation, id responsObj) {
    NSDictionary *dic = [responsObj objectForKey:@"data"];

    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        if (dic) {
            NSString *picUrl = [dic objectForKey:@"pic_url"];
            if ([picUrl isEqualToString:@""]) {
                NSLog(@"pic_url:%@",picUrl);
            }else{
                NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:picUrl]];
                UIImage *image = [UIImage imageWithData:data];

                NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);

                NSString *filePath = [[paths objectAtIndex:0] stringByAppendingPathComponent:[NSString stringWithFormat:@"loading.png"]];   // 保存文件的名称
                //    BOOL result = [UIImagePNGRepresentation() writeToFile: filePath    atomically:YES]; // 保存成功会返回YES
                NSLog(@"paths:%@    %@",paths,filePath);
                [UIImagePNGRepresentation(image) writeToFile:filePath atomically:YES];
            }
        }
    });



} failedBlock:^(AFHTTPRequestOperation *operation, NSError *error) {

    NSLog(@"加载 启动页广告 失败");


}];


}

-(void)removeAdvImage{
    NSLog(@"removeAdvImage");
    [UIView animateWithDuration:0.3f animations:^{
        _advImage.transform = CGAffineTransformMakeScale(0.5f, 0.5f);
        _advImage.alpha = 0.f;
    } completion:^(BOOL finished) {
        [_advImage removeFromSuperview];
    }];
}