在我们使用应用时，一打开应用，如果此应用有新的版本，常常能在应用中给出提示，是否要更新此应用。所以，我们就来看看，版本更新是如何实现的。
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NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];[request setURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://itunes.apple.com/lookup?id=%@",appleID]]];[request setHTTPMethod:@"GET"];NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];NSDictionary *jsonData = [NSJSONSerialization JSONObjectWithData:returnData options:0 error:nil]; |
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NSString *latestVersion = [releaseInfo objectForKey:@"version"];NSString *trackViewUrl1 = [releaseInfo objectForKey:@"trackViewUrl"];//地址trackViewUrlNSString *trackName = [releaseInfo objectForKey:@"trackName"];//trackName |
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NSString *currentVersion = [infoDict objectForKey:@"CFBundleVersion"]; |
NSDictionary *infoDict = [[NSBundle mainBundle] infoDictionary];
NSString *currentVersion = [infoDict objectForKey:@"CFBundleVersion"];
double doubleCurrentVersion = [currentVersion doubleValue];
if (doubleCurrentVersion < doubleUpdateVersion) {
UIAlertView *alert;
alert = [[UIAlertView alloc] initWithTitle:trackName
message:@"有新版本，是否升级！"
delegate: self
cancelButtonTitle:@"取消"
otherButtonTitles: @"升级", nil];
alert.tag = 1001;
[alert show];
}
else{
UIAlertView *alert;
alert = [[UIAlertView alloc] initWithTitle:trackName
message:@"暂无新版本"
delegate: nil
cancelButtonTitle:@"好的"
otherButtonTitles: nil, nil];
[alert show];
}
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:trackViewUrl]];
原文：http://www.cnblogs.com/lingzeng/p/4135726.html