AppLicensing失败 - 签名为空字符串 [英] AppLicensing fails - signature is empty string

问题描述

我为InApp-Billing实施了App-Licensing，现在我得到了 Error.NOT_LICENSED ，但我不知道有什么问题。我正在使用的版本尚未发布到Play商店。

这是我用来启动许可流程的代码：

  private void checkLicense（int retries）{
 if（retries！= 5）{
 String publicKey =YOUR KEY ; 
 final CdcLicenseCheckerCallback callback = new CdcLicenseCheckerCallback（）; 
 String deviceId = mPrefsHandler.getDeviceId（）; 
 deviceId = deviceId！= null？ deviceId：UUID.randomUUID（）。toString（）; 
 mPrefsHandler.setDeviceId（deviceId）; 
 Crashlytics.setBool（有Device-Id，deviceId！= null）; 
 final LicenseChecker checker = new LicenseChecker（this，new ServerManagedPolicy（this，$ b $ new AESObfuscator（new byte [] {1，1，...，1}，getPackageName（），
 deviceId ）），publicKey）; 
 checker.checkAccess（callback）; 
 
 
 $ / code> 

我使用了一个生产版本来弄清楚发生了什么，发现在 LicenseValidator.java 中，方法 verify 的参数签名 $ c>是一个空字符串，导致 sig.verify（Base64.decode（signature））返回 ERROR.NOT_LICENSED 。

  if（！sig.verify（Base64.decode（signature）））{
 Log.e （TAG，签名验证失败。）; 
 handleInvalidResponse（）; 
 return; 
} 
  

我只有一点点想法： UUID .randomUUID（）。toString（）可能是问题，但我不知道，不管它是真的，还是在这里做什么。


解决方案

发现问题。我实际上并没有向游戏商店发布alpha版本，所以google play显然不允许使用新版本，因为它不知道它。解决方案：检查，如果您安装的应用版本低于或等于发布到谷歌播放的最新版本（alpha，beta或制作频道）

I've implemented App-Licensing for InApp-Billing and now I'm getting Error.NOT_LICENSED and I have no idea what's wrong. The version I'm working on has not been published to the play store yet.

This is the code I use to start the licensing-process:

private void checkLicense(int retries) {
  if (retries != 5) {
    String publicKey = "YOUR KEY";
    final CdcLicenseCheckerCallback callback = new CdcLicenseCheckerCallback();
    String deviceId = mPrefsHandler.getDeviceId();
    deviceId = deviceId != null ? deviceId : UUID.randomUUID().toString();
    mPrefsHandler.setDeviceId(deviceId);
    Crashlytics.setBool("has Device-Id", deviceId != null);
    final LicenseChecker checker = new LicenseChecker(this, new ServerManagedPolicy(this,
        new AESObfuscator(new byte[] { 1, 1, ... , 1 }, getPackageName(),
            deviceId)), publicKey);
    checker.checkAccess(callback);
  }
}

I used a production variant to figure out what's happening and found that in LicenseValidator.java, the parameter signature for the method verify is an empty string, causing the sig.verify(Base64.decode(signature)) to return ERROR.NOT_LICENSED.

if (!sig.verify(Base64.decode(signature))) {
  Log.e(TAG, "Signature verification failed.");
  handleInvalidResponse();
  return;
}

I only have a hint of an idea that UUID.randomUUID().toString() might be the issue, but I have no idea, whether it actually, nor what to do here.

解决方案

Found the problem. I hadn't actually published the alpha-version to the playstore, so google play explicitly disallowed the newer version, because it didn't know about it

Solution: Check, if your installed app version is lower or equal to the latest version that was published to google play (alpha, beta or production channel)

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