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我正在尝试实现 LVL(Android 许可验证库),但是当许可证检查失败时遇到了问题。我弹出一个对话框,说明许可证检查失败并用两个按钮显示它们。一个按钮是“重试”,我想立即进行另一次检查或“购买应用程序”,它将他们重定向到在应用市场上购买应用程序。

当我点击重试按钮时,我可以从日志消息中看到我的许可检查被调用,我收到另一个“不允许”回调并且我尝试再次显示上述失败对话框(我看到 onPrepareDialog() 再次被调用)。

问题是第二个对话框实际上没有显示。因此,即使许可证检查失败,用户也可以使用该应用程序。为什么没有一次又一次地弹出对话框?

我相信这是所有相关代码:

private void checkLicense() {
    Log.d(TAG, "Checking License...");
    this.licenseChecker.checkAccess(this.licenseCheckerCallback);
}

private class MyLicenseCheckerCallback implements LicenseCheckerCallback {
    public void allow() { }

    public void dontAllow() {
        Log.d(TAG, "License resposne: Don't Allow");
        if (isFinishing())
            return; // Don't update UI if Activity is finishing.
        // 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.
        Log.d(TAG, "Showing No License Dialog");
        showDialog(DIALOG_NO_LICENSE_ID);
    }

    public void applicationError(ApplicationErrorCode errorCode) {
        if (isFinishing())
            return; // Don't update UI if Activity is finishing.
        // This is a polite way of saying the developer made a mistake
        // while setting up or calling the license checker library.
        showDialog(DIALOG_APPLICATION_ERROR_ID);
    }
}

protected Dialog onCreateDialog(int id) {
    Log.d(TAG, "Creating Dialog "+id);
    switch(id) {
    case DIALOG_NO_LICENSE_ID:
        return this.makeRetryPurchaseDialog(getString(R.string.no_license));
    case DIALOG_APPLICATION_ERROR_ID:
        return this.makeRetryPurchaseDialog(this.applicationErrorMessageForDialog);
    }
    return null;
}

private Dialog makeRetryPurchaseDialog(String message) {
    AlertDialog.Builder builder = new AlertDialog.Builder(CalculatorTabActivity.this);
    builder.setMessage(message).setCancelable(false)
    .setPositiveButton("Retry", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int id) {
            CalculatorTabActivity.this.checkLicense();
        }
    }).setNegativeButton("Purchase App", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int id) {
            CalculatorTabActivity.this.openAppMarket();
        }
    });
    return builder.create();
}
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1 回答 1

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Just as an idea, try to explicitly call for dialog dismissing:

...
.setPositiveButton("Retry", new DialogInterface.OnClickListener() {
    public void onClick(DialogInterface dialog, int id) {
        dissmissDialog(DIALOG_NO_LICENSE_ID);
        CalculatorTabActivity.this.checkLicense();
    }
})

Also, if that will not work, try using removeDialog(DIALOG_NO_LICENSE_ID) instead of dissmissDialog(DIALOG_NO_LICENSE_ID).

Finally what code (if at all) do you have in onPrepareDialog() ?

于 2010-11-08T21:25:09.913 回答