android - Android帐单异常(exception)

我正在测试帐单，却遇到了以下异常:

java.lang.IllegalStateException: Can't start async operation (launchPurchaseFlow) because another async operation(launchPurchaseFlow) is in progress.
        at utils.IabHelper.flagStartAsync(IabHelper.java:711)
        at utils.IabHelper.launchPurchaseFlow(IabHelper.java:316)
        at utils.IabHelper.launchPurchaseFlow(IabHelper.java:294)
        at com.problemio.SubscribeIntroActivity$6.onClick(SubscribeIntroActivity.java:117)
        at android.view.View.performClick(View.java:2532)
        at android.view.View$PerformClick.run(View.java:9308)
        at android.os.Handler.handleCallback(Handler.java:587)
        at android.os.Handler.dispatchMessage(Handler.java:92)
        at android.os.Looper.loop(Looper.java:150)
        at android.app.ActivityThread.main(ActivityThread.java:4293)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:507)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
        at dalvik.system.NativeStart.main(Native Method)

运行这段代码后:

    Button subscribe = (Button)findViewById(R.id.subscribe);
    subscribe.setOnClickListener(new Button.OnClickListener()
    {
       public void onClick(View v)
       {
           // FIRST CHECK IF THE USER IS ALREADY A SUBSCRIBER.
          mHelper.launchPurchaseFlow(SubscribeIntroActivity.this, SUBSCRIBE_SKU, RC_REQUEST, mPurchaseFinishedListener);

       }
    });

但是在此之前，我以测试用户身份运行它，并使用了测试产品ID:android.test.purchased并成功运行了。但是，当我将产品ID更改为自己的产品ID之一时，它崩溃了，但以上情况除外。

有任何想法为什么会这样吗？
谢谢!

最佳答案

IabHelper将仅允许一次执行单个异步查询。您需要实现onActivityResult()并将参数传递到IabHelper的handleActivityResult()方法中。

应用内结算示例代码实现了以下方法:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    Log.d(TAG, "onActivityResult(" + requestCode + "," + resultCode + "," + data);

    // Pass on the activity result to the helper for handling
    if (!mHelper.handleActivityResult(requestCode, resultCode, data)) {
        // not handled, so handle it ourselves (here's where you'd
        // perform any handling of activity results not related to in-app
        // billing...
        super.onActivityResult(requestCode, resultCode, data);
    }
    else {
        Log.d(TAG, "onActivityResult handled by IABUtil.");
    }
}