Android in-app billing: Can't start async operation because another async operation (is in progress)

Question

I am using the IabHelper utility classes, as recommended by Google\'s tutorial, and I\'m being hit hard by this error. Apparently IabHelper can not

Answer 1

I ended up doing something similar to Kintaro. But added mHelper.flagEndAsync() to the end of the catch. The user still gets the toast but by the next time they push the purchase button, the async operation has been killed and the purchase button is ready to go again.

if (mHelper != null) {
    try {
    mHelper.launchPurchaseFlow(this, item, RC_REQUEST, mPurchaseFinishedListener, "");
    }       
    catch(IllegalStateException ex){
        Toast.makeText(this, "Please retry in a few seconds.", Toast.LENGTH_SHORT).show();
        mHelper.flagEndAsync();
    }
}