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。应用
苹果给了我们一个接口,能根据应用id请求一些关于应用的信息。我们可以根据返回的信息,来判断版本是否和应用的版本一致,如果不一致,那么就出现新的版本了。这时,就需要向用户提醒有新的版本,需要更新。具体步骤如下: 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];
这里,我们通过同步请求,解析json数据,得到了数据。 好的,我们这里需要,version,trackViewUrl,trackName。 NSString *latestVersion = [releaseInfo objectForKey:@
NSDictionary *jsonData = [NSJSONSerialization JSONObjectWithData:returnData options:0 error:nil];
"version"
];
NSString *trackViewUrl1 = [releaseInfo objectForKey:@
"trackViewUrl"
];
//地址trackViewUrl
获取此应用的版本号 NSString *currentVersion = [infoDict objectForKey:@
NSString *trackName = [releaseInfo objectForKey:@
"trackName"
];
//trackName
"CFBundleVersion"
通过latestVersion和currentVersion的比较,来判断是否有新的更新。 [plain] view plain copy print ?
];
- 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];
- }
如果有新的版本,那么就跳转至下载页面,这里就用到了trackViewUrl,trackViewUrl是全路径,直接请求。 [plain] view plain copy print ?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]];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:trackViewUrl]];
好的,这就是版本更新的全部步骤。 加载新的app数据包
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 1) {
//去appstore中更新
//方法一:根据应用的id打开appstore,并跳转到应用下载页面
//NSString *appStoreLink = [NSString stringWithFormat:@"http://itunes.apple.com/cn/app/id%@",app_id];
//[[UIApplication sharedApplication] openURL:[NSURL URLWithString:appStoreLink]];
//方法二:直接通过获取到的url打开应用在appstore,并跳转到应用下载页面
[[UIApplicationsharedApplication] openURL:[NSURLURLWithString:updateURL]];
} else if (buttonIndex == 2) {
//去itunes中更新
[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:@"itms://itunes.apple.com/cn/app/guang-dian-bi-zhi/id511587202?mt=8"]];
}
}
获取到xcode中版本号:#define VERSION [[[NSBundle mainBundle] infoDictionary] valueForKey:@"CFBundleShortVersionString"]
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