1.一定要先配置自己項(xiàng)目在商店的APPID(從蘋(píng)果開(kāi)發(fā)者中心登錄自己的賬號(hào)可看),配置完最好在真機(jī)上運(yùn)行才能看到完全效果哦!

define STOREAPPID @"1104867082" // 宏定義APPID

/**

• 天朝專用檢測(cè)app更新
  一句代碼實(shí)現(xiàn)檢測(cè)更新,很簡(jiǎn)單哦 （需要在viewDidAppear完成時(shí)框都，再調(diào)用改方法帚桩。不然 在網(wǎng)速飛快的時(shí)候工闺，會(huì)出現(xiàn)一個(gè)bug鸵贬，就是當(dāng)前控制器viewDidLoad調(diào)用的話甫菠，可能當(dāng)前視 圖還沒(méi)加載完畢就需要推出UIAlertAction）
  */
  -(void)hsUpdateApp
  {
  //2先獲取當(dāng)前工程項(xiàng)目版本號(hào)
  NSDictionary *infoDic=[[NSBundle mainBundle] infoDictionary];
  NSString *currentVersion=infoDic[@"CFBundleShortVersionString"];

  //3從網(wǎng)絡(luò)獲取appStore版本號(hào)
  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(@"你沒(méi)有連接網(wǎng)絡(luò)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"];
  //打印版本號(hào)
  NSLog(@"當(dāng)前版本號(hào):%@\n商店版本號(hào):%@",currentVersion,appStoreVersion);
  //設(shè)置版本號(hào)
  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當(dāng)前版本號(hào)小于商店版本號(hào),就更新
  if([currentVersion floatValue] < [appStoreVersion floatValue])
  {
  UIAlertController *alercConteoller = [UIAlertController alertControllerWithTitle:@"版本有更新" message:[NSString stringWithFormat:@"檢測(cè)到新版本(%@),是否更新?",dic[@"version"]] preferredStyle:UIAlertControllerStyleAlert];
  UIAlertAction *actionYes = [UIAlertAction actionWithTitle:@"更新" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
  //此處加入應(yīng)用在app store的地址，方便用戶去更新，一種實(shí)現(xiàn)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(@"版本號(hào)好像比商店大噢!檢測(cè)到不需要更新");
  }

}