Andios

Android -> S3

get Android key

https://console.aws.amazon.com/cognito/home 

Manage identity -> insert identity pool name -> enable access to unauthorized identities -> get aws credentials

Policy setting

http://awspolicygen.s3.amazonaws.com/policygen.html

select type: S3 bucket policy

Principal: *

Actions: get object

Arn:aws:s3:::(bucketname)/*

Statement 복사 S3 setting -> 붙여넣기

Android pro guard

# Class names are needed in reflection

-keepnames class com.amazonaws.**

-keepnames class com.amazon.**

# Request handlers defined in request.handlers

-keep class com.amazonaws.services.**.*Handler

# The following are referenced but aren't required to run

-dontwarn com.fasterxml.jackson.**

-dontwarn org.apache.commons.logging.**

# Android 6.0 release removes support for the Apache HTTP client

-dontwarn org.apache.http.**

# The SDK has several references of Apache HTTP client

-dontwarn com.amazonaws.http.**

-dontwarn com.amazonaws.metrics.**