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我有一个使用 Google Licensing 服务的 Android 应用程序，大约 5% 的新用户定期向我发送电子邮件，抱怨许可证检查失败。它开始影响我的销售。我到底做错了什么？

this.licenseCheckerCallback = new MyLicenseCheckerCallback();

String deviceId = Secure.getString(getContentResolver(), Secure.ANDROID_ID);

// Construct the LicenseChecker with a Policy.
this.licenseChecker = new LicenseChecker(
    this, new ServerManagedPolicy(this,
            new AESObfuscator(SALT, getPackageName(), deviceId)), 
            BASE64_PUBLIC_KEY  // Your public licensing key.
    );

this.checkLicense();




private void checkLicense() {
    this.licenseChecker.checkAccess(this.licenseCheckerCallback);
}


private class MyLicenseCheckerCallback implements LicenseCheckerCallback {

    public void allow() {
        // Don't do anything, let the user work in peace.
    }

    public void dontAllow() {
        if (isFinishing()) {
            // Don't update UI if Activity is finishing.
            return;
        }
        // Should not allow access. In most cases, the app should assume
        // the user has access unless it encounters this. If it does,
        // the app should inform the user of their unlicensed ways
        // and then either shut down the app or limit the user to a
        // restricted set of features.
        // In this example, we show a dialog that takes the user to Market.
        showDialog(DIALOG_NO_LICENSE_ID);
        MyActivity.this.dialogIdCurrentlyShown = DIALOG_NO_LICENSE_ID;
    }

    public void applicationError(ApplicationErrorCode errorCode) {
        if (isFinishing()) {
            // Don't update UI if Activity is finishing.
            return;
        }
        // This is a polite way of saying the developer made a mistake
        // while setting up or calling the license checker library.
        // Please examine the error code and fix the error.
        MyActivity.this.applicationErrorMessageForDialog = String.format(getString(R.string.application_error), errorCode);
        showDialog(DIALOG_APPLICATION_ERROR_ID);
        MyActivity.this.dialogIdCurrentlyShown = DIALOG_APPLICATION_ERROR_ID;
    }
}
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1 回答 1

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你没有做错什么。我有同样的问题，其他人也有。你无能为力，但仍然：

  1. 向 Google 开一张支持票，告诉他们 LVL 的性能欠佳并且正在影响合法用户。
  2. 在“未授权”对话框中添加“重试”按钮。有时这只是导致许可失败的暂时性网络故障。
  3. 考虑将 Google 的支持电子邮件留在我们的对话中，或添加其他方式让用户将问题传达给其来源。
  4. 唯一有效的选择可能是：GT如果响应是永久购买，则在将其存储在缓存中之前手动增加从许可服务接收的时间戳值。GT检查时间戳和时间戳之间的差异VT- 如果它足够大（一周），请在GT. 这个想法是，一旦用户通过了退款期，您可以在他/她的设备上使他/她的许可证半永久或完全永久。

希望这可以帮助。

于 2011-11-09T03:46:11.383 回答