iOS 检测版本更新
如果我们要检测app版本的更新,那么我们必须获取当前运行app版本的版本信息和appstore 上发布的最新版本的信息。
当前运行版本信息可以通过info.plist文件中的bundle version中获取:
1 NSDictionary *infoDic = [[NSBundle mainBundle] infoDictionary]; 2 3 NSString *appVersion = [infoDic objectForKey:@"CFBundleVersion"];
这样就获取到当前运行的app的版本了
要获取当前app store上的最新的版本,有两种方法,
一、在某特定的服务器上,发布和存储app最新的版本信息,需要的时候向该服务器请求查询。
二、从app store上查询,可以获取到app的作者,连接,版本等。官方相关文档
www.apple.com/itunes/affiliates/resources/documentation/itunes-store-web-service-search-api.htm
具体步骤如下:
1,用 POST 方式发送请求:
http://itunes.apple.com/search?term=你的应用程序名称&entity=software
更加精准的做法是根据 app 的 id 来查找:
http://itunes.apple.com/lookup?id=你的应用程序的ID
#define APP_URL http://itunes.apple.com/lookup?id=你的应用程序的ID
你的应用程序的ID 是 itunes connect里的 Apple ID
2,从获得的 response 数据中解析需要的数据。因为从 appstore 查询得到的信息是 JSON 格式的,所以需要经过解析。解析之后得到的原始数据就是如下这个样子的:
{
resultCount = 1;
results = (
{
artistId = 开发者 ID;
artistName = 开发者名称;
price = 0;
isGameCenterEnabled = 0;
kind = software;
languageCodesISO2A = (
EN
);
trackCensoredName = 审查名称;
trackContentRating = 评级;
trackId = 应用程序 ID;
trackName = 应用程序名称";
trackViewUrl = 应用程序介绍网址;
userRatingCount = 用户评级;
userRatingCountForCurrentVersion = 1;
version = 版本号;
wrapperType = software;
}
);
}
然后从中取得 results 数组即可,具体代码如下所示:
NSDictionary *jsonData = [dataPayload JSONValue];
NSArray *infoArray = [jsonData objectForKey:@"results"];
NSDictionary *releaseInfo = [infoArray objectAtIndex:0];
NSString *latestVersion = [releaseInfo objectForKey:@"version"];
NSString *trackViewUrl = [releaseInfo objectForKey:@"trackViewUrl"];
如果你拷贝 trackViewUrl 的实际地址,然后在浏览器中打开,就会打开你的应用程序在 appstore 中的介绍页面。当然我们也可以在代码中调用 safari 来打开它。
UIApplication *application = [UIApplication sharedApplication];
[application openURL:[NSURL URLWithString:trackViewUrl]];
代码如下:
1 -(void)onCheckVersion 2 { 3 NSDictionary *infoDic = [[NSBundle mainBundle] infoDictionary]; 4 //CFShow((__bridge CFTypeRef)(infoDic)); 5 NSString *currentVersion = [infoDic objectForKey:@"CFBundleVersion"]; 6 7 NSString *URL = @"http://itunes.apple.com/lookup?id=你的应用程序的ID"; 8 NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; 9 [request setURL:[NSURL URLWithString:URL]]; 10 [request setHTTPMethod:@"POST"]; 11 NSHTTPURLResponse *urlResponse = nil; 12 NSError *error = nil; 13 NSData *recervedData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error]; 14 15 NSString *results = [[NSString alloc] initWithBytes:[recervedData bytes] length:[recervedData length] encoding:NSUTF8StringEncoding]; 16 NSDictionary *dic = [results JSONValue]; 17 NSArray *infoArray = [dic objectForKey:@"results"]; 18 if ([infoArray count]) { 19 NSDictionary *releaseInfo = [infoArray objectAtIndex:0]; 20 NSString *lastVersion = [releaseInfo objectForKey:@"version"]; 21 22 if (![lastVersion isEqualToString:currentVersion]) { 23 //trackViewURL = [releaseInfo objectForKey:@"trackVireUrl"]; 24 UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"更新" message:@"有新的版本更新,是否前往更新?" delegate:self cancelButtonTitle:@"关闭" otherButtonTitles:@"更新", nil]; 25 alert.tag = 10000; 26 [alert show]; 27 } 28 else 29 { 30 UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"更新" message:@"此版本为最新版本" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil]; 31 alert.tag = 10001; 32 [alert show]; 33 } 34 } 35 } 36 - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex 37 { 38 if (alertView.tag==10000) { 39 if (buttonIndex==1) { 40 NSURL *url = [NSURL URLWithString:@"https://itunes.apple.com"]; 41 [[UIApplication sharedApplication]openURL:url]; 42 } 43 } 44 }