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:
1 |
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; |
2 |
[request setURL:[NSURL URLWithString:[NSString stringWithFormat:@ "http://itunes.apple.com/lookup?id=%@" ,appleID]]];
|
3 |
[request setHTTPMethod:@ "GET" ];
|
4 |
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; |
5 |
NSDictionary *jsonData = [NSJSONSerialization JSONObjectWithData:returnData options:0 error:nil]; |
这里,我们通过同步请求,解析json数据,得到了数据。
1 |
NSString *latestVersion = [releaseInfo objectForKey:@ "version" ];
|
2 |
NSString *trackViewUrl1 = [releaseInfo objectForKey:@ "trackViewUrl" ]; //地址trackViewUrl
|
3 |
NSString *trackName = [releaseInfo objectForKey:@ "trackName" ]; //trackName
|
获取此应用的版本号
1 |
NSString *currentVersion = [infoDict objectForKey:@ "CFBundleVersion" ];
|
通过latestVersion和currentVersion的比较,来判断是否有新的更新。
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。
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:trackViewUrl]];
好的,这就是版本更新的全部步骤
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:
- NSDictionary *infoDic = [[NSBundle mainBundle] infoDictionary];
- CFShow(infoDic);
- 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:
-(void)onCheckVersion
{
NSDictionary *infoDic = [[NSBundle mainBundle] infoDictionary];
//CFShow((__bridge CFTypeRef)(infoDic));
NSString *currentVersion = [infoDic objectForKey:@"CFBundleVersion"];
NSString *URL = @"http://itunes.apple.com/lookup?id=你的应用程序的ID";
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:URL]];
[request setHTTPMethod:@"POST"];
NSHTTPURLResponse *urlResponse = nil;
NSError *error = nil;
NSData *recervedData = [NSURLConnection sendSynchronousRequest:requestreturningResponse:&urlResponse error:&error];
NSString *results = [[NSString alloc] initWithBytes:[recervedData bytes] length:[recervedDatalength] encoding:NSUTF8StringEncoding];
NSDictionary *dic = [results JSONValue];// 字符串转json对象(分类方法,详细介绍请看我另外一篇笔记)
)
NSArray *infoArray = [dic objectForKey:@"results"];
if ([infoArray count]) {
NSDictionary *releaseInfo = [infoArray objectAtIndex:0];
NSString *lastVersion = [releaseInfo objectForKey:@"version"];
if (![lastVersion isEqualToString:currentVersion]) {
//trackViewURL = [releaseInfo objectForKey:@"trackVireUrl"];
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];
alert.tag = 10000;
[alert show];
}
else
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"更新" message:@"此版本为最新版本" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
alert.tag = 10001;
[alert show];
}
}
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (alertView.tag==10000) {
if (buttonIndex==1) {
NSURL *url = [NSURL URLWithString:@"https://itunes.apple.com"];
[[UIApplication sharedApplication]openURL:url];
}
}
}