A working source code of a simple demo of AWS Lambda for Android Phone could be found at:
https://github.com/mingewang/AndroidEventGenerator
Notes:
(1) The above code runs good on the real android phone.
(2) Running on the Android Emulator, I always got the error:
final LambdaFunctionsInterface myInterface = factory.build(LambdaFunctionsInterface.class);
Method threw ‘java.lang.UnsupportedOperationException’ exception. Cannot evaluate $Proxy0.toString()
then it crashed the app in the emulator. what could be wrong?
Get the MD5 sigature for AWS Application console ( Android Settings)
keytool-list-printcert-jarfile app.apk
Useful references:
https://java.awsblog.com/post/Tx2J2LPKTTVU93H/Invoking-AWS-Lambda-Functions-from-Java
https://mobile.awsblog.com/post/Tx1OUIR0XJAI3ZM/Building-a-Mobile-Backend-Using-AWS-Lambda
https://mobile.awsblog.com/post/TxR1UCU80YEJJZ/Using-the-Amazon-Cognito-Credentials-Provider
http://docs.aws.amazon.com/lambda/latest/dg/java-wt-user-app-android.html
