google play iap 常见问题

1.测试阶段query时获取的sku对象为空

解：测试阶段只能使用如下sku

   //    private static final String SKU_TEST = "android.test.canceled";
    //   private static final String SKU_TEST = "android.test.purchased";
    //    private static final String SKU_TEST = "android.test.item_unavailable";
//    private static final String SKU_TEST = "android.test.refunded";

2.Error - Authentication is required. You need to sign into your Google Account

解：未配置sku或者sku非上面一条中所配置的sku

3.Error refreshing inventory (querying owned items). (response: -1003:Purchase signature verification failed)

测试Query Inventory时，如果使用的sku是android.test.xxx，那么会出现这个问题，测试阶段有个解决办法

http://stackoverflow.com/questions/14600664/android-in-app-purchase-signature-verification-failed