iphone – 根据应用商店中的最新版本,最简单的方法来检查当前版本的应用程序？

NSURL * url = [NSURL URLWithString:@"http://yourweb.com/version.txt"];
NSURLrequest * request = [NSURLrequest requestWithURL:url cachePolicy:NSURLrequestReturnCacheDataElseLoad timeoutInterval:60];
 _connection = [[NSURLConnection alloc] initWithrequest:request delegate:self];

然后在您的委托实施中：

(void)connection:(NSURLConnection*)connection didReceiveResponse:(NShttpURLResponse*)response
{
    if(response.statusCode != 200)
        // you got an error
}

- (void)connection:(NSURLConnection*)connection didFailWithError:(NSError*)error
{
     // again with the errors ...
}

// you got some data ... append it to your chunk
// in your case all the data should come BACk in one callBACk
- (void)connection:(NSURLConnection*)connection didReceiveData:(NSData*)data
{
    [mData appendData:data];
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
   // your request finished ... check the version here
}

所以在你的connectionDidFinishLoading你看看你收集的mData.解析出版本号并将其与您的捆绑版本号进行比较：

[self infoValueForKey:@"CFBundLeversion"];