Some patches for Google Play's library about openiab

[oorlov]

Nice to hear it!
We already found issue with moreSubSkus a day ago and going to fix.
Very interesting with security. Will update it together with #35
Will revise issue with 20 items.
Very useful notice, thank you!

[markostamcar]

Great :)

[markostamcar]

Hello! Good job. Just wanted to let you know Google produced a new NPE with their security fix which happens on devices without Google Play. queryIntentServices() can return null in that case. See here:
https://code.google.com/p/marketbilling/issues/detail?id=149

But in our code I opted for a shorter solution:

if (mContext.getPackageManager().queryIntentServices(serviceIntent, 0) != null
&& !mContext.getPackageManager().queryIntentServices(serviceIntent, 0).isEmpty()) {

[oorlov]

Size of batch can be changed in IabHelper.QUERY_SKU_DETAILS_BATCH_SIZE

[oorlov]

About NPE:
it's strange that queryIntentServices() returns null. There is no notes about it in javadoc, so who does expect it there? I guess it is a bug in Kindle Fire.
In OpenIAB it shouldn't appear because IabHelper code is not used on Amazon device. GooglePlay.isPackageInstaller() returns false there.

[oorlov]

any other problems here?

[markostamcar]

Nope, that's it from me :) Regarding the NPE, I think it also happens in the Android emulator.