define STOREAPPID @"1104867082" // 宏定义APPID

/**

天朝专用检测app更新
一句代码实现检测更新,很简单哦（需要在viewDidAppear完成时，再调用改方法。不然在网速飞快的时候，会出现一个bug，就是当前控制器viewDidLoad调用的话，可能当前视图还没加载完毕就需要推出UIAlertAction）
*/
-(void)hsUpdateApp
{
//2先获取当前工程项目版本号
NSDictionary *infoDic=[[NSBundle mainBundle] infoDictionary];
NSString *currentVersion=infoDic[@"CFBundleShortVersionString"];

//3从网络获取appStore版本号
NSError *error;
NSData *response = [NSURLConnection sendSynchronousRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://itunes.apple.com/cn/lookup?id=%@",STOREAPPID]]] returningResponse:nil error:nil];
if (response == nil) {
NSLog(@"你没有连接网络哦");
return;
}
NSDictionary *appInfoDic = [NSJSONSerialization JSONObjectWithData:response options:NSJSONReadingMutableLeaves error:&error];
if (error) {
NSLog(@"hsUpdateAppError:%@",error);
return;
}
// NSLog(@"%@",appInfoDic);
NSArray *array = appInfoDic[@"results"];
NSDictionary *dic = array[0];
NSString *appStoreVersion = dic[@"version"];
//打印版本号
NSLog(@"当前版本号:%@\n商店版本号:%@",currentVersion,appStoreVersion);
//设置版本号
currentVersion = [currentVersion stringByReplacingOccurrencesOfString:@"." withString:@""];
if (currentVersion.length==2) {
currentVersion = [currentVersion stringByAppendingString:@"0"];
}else if (currentVersion.length==1){
currentVersion = [currentVersion stringByAppendingString:@"00"];
}
appStoreVersion = [appStoreVersion stringByReplacingOccurrencesOfString:@"." withString:@""];
if (appStoreVersion.length==2) {
appStoreVersion = [appStoreVersion stringByAppendingString:@"0"];
}else if (appStoreVersion.length==1){
appStoreVersion = [appStoreVersion stringByAppendingString:@"00"];
}

//4当前版本号小于商店版本号,就更新
if([currentVersion floatValue] < [appStoreVersion floatValue])
{
UIAlertController *alercConteoller = [UIAlertController alertControllerWithTitle:@"版本有更新" message:[NSString stringWithFormat:@"检测到新版本(%@),是否更新?",dic[@"version"]] preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *actionYes = [UIAlertAction actionWithTitle:@"更新" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
//此处加入应用在app store的地址，方便用户去更新，一种实现方式如下
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"https://itunes.apple.com/us/app/id%@?ls=1&mt=8", STOREAPPID]];
[[UIApplication sharedApplication] openURL:url];
}];
UIAlertAction *actionNo = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
```
}];
[alercConteoller addAction:actionYes];
[alercConteoller addAction:actionNo];
[self presentViewController:alercConteoller animated:YES completion:nil];
```
}else{
NSLog(@"版本号好像比商店大噢!检测到不需要更新");
}