IOS检查版本更新

来源：互联网发布：mnist数据集编辑：程序博客网时间：2024/05/29 06:36

iOS的版本号, 一个叫做Version, 一个叫做Build.
获得Version ,

[[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleShortVersionString"];

获得build号:

[[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleVersion"]

// 以下方法
先获取最新的版本号
再获取当前软件的版本号
最后进行比较

- (void)checkVersionUpdate{   //同步请求 JSON方法获取数据    NSError *error;    NSString *urlStr = [NSString stringWithFormat:@"http://itunes.apple.com/lookup?id=%@", kAppId];    NSURL *url = [NSURL URLWithString:urlStr];    NSURLRequest *resquest = [NSURLRequest requestWithURL:url];    NSData *response = [NSURLConnection sendSynchronousRequest:resquest returningResponse:nil error:nil];    NSDictionary *appInfoDic = [NSJSONSerialization JSONObjectWithData:response options:NSJSONReadingMutableLeaves error:&error];    if (error) {        DLog(@"error: = %@", [error description]);        return ;    }    NSArray *resultArray = [appInfoDic objectForKey:@"results"];    if (![resultArray count]) {        DLog(@"error: resultArray  == nil");        return;    }    NSDictionary *infoDic = [resultArray objectAtIndex:0];    NSString *lastVersion = [infoDic objectForKey:@"version"];    NSString *trackViewUrl = [infoDic objectForKey:@"trackViewUrl"];    NSString *trackName = [infoDic objectForKey:@"trackName"];    //获取此应用的版本号    NSDictionary *infoDict = [[NSBundle mainBundle] infoDictionary];    NSString *currentVersion = [infoDict objectForKey:@" CFBundleShortVersionString"];    double doubleCurrentVersion = [currentVersion doubleValue];    double doubleUpdateVersion = [lastVersion doubleValue];    //比较    NSString *titleStr = [NSString stringWithFormat:@"检查更新:%@", trackName];    if (doubleCurrentVersion < doubleUpdateVersion) {        NSString *messagestr = [NSString stringWithFormat:@"发现新版本:%@, 是否升级?", lastVersion];        UIAlertView *alter = [[UIAlertView alloc] initWithTitle:titleStr message:messagestr delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"升级", nil];        alter.tag = [kAppId intValue];        [alter show];    }else{        UIAlertView *alter = [[UIAlertView alloc] initWithTitle:titleStr message:@"暂无新版本"delegate:self cancelButtonTitle:@"好的" otherButtonTitles:nil, nil];        alter.tag = [kAppId intValue]+1;        [alter show];    }}- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{    if (alertView.tag == [kAppId intValue]) {        if (buttonIndex == 1) {            //[[UIApplication sharedApplication] openURL:[NSURL URLWithString:_trackViewUrl]];        }    }}

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