play-store-api 
Google Play Store protobuf API wrapper in java
Include
Get it from jitpack. Or...
Build separately
git clone https://github.com/yeriomin/play-store-api
gradlew :assemble
gradlew :build
Protobuf classes generation happens on assemble step, tests a ran on build step.
Usage
First login
// A device definition is required to log in
// See resources for a list of available devices
Properties properties = new Properties();
try {
properties.load(getClass().getClassLoader().getSystemResourceAsStream("device-honami.properties"));
} catch (IOException e) {
System.out.println("device-honami.properties not found");
return null;
}
PropertiesDeviceInfoProvider deviceInfoProvider = new PropertiesDeviceInfoProvider();
deviceInfoProvider.setProperties(properties);
deviceInfoProvider.setLocaleString(Locale.ENGLISH.toString());
// Provide valid google account info
PlayStoreApiBuilder builder = new PlayStoreApiBuilder()
// Extend HttpClientAdapter using a http library of your choice
.setHttpClient(new HttpClientAdapterImplementation())
.setDeviceInfoProvider(deviceInfoProvider)
.setEmail(email)
.setPassword(password)
;
GooglePlayAPI api = builder.build();
// We are logged in now
// Save and reuse the generated auth token and gsf id,
// unless you want to get banned for frequent relogins
api.getToken();
api.getGsfId();
// API wrapper instance is ready
DetailsResponse response = api.details("com.cpuid.cpu_z");Further logins
// A device definition is required for routine requests too
// See resources for a list of available devices
Properties properties = new Properties();
try {
properties.load(getClass().getClassLoader().getSystemResourceAsStream("device-honami.properties"));
} catch (IOException e) {
System.out.println("device-honami.properties not found");
return null;
}
PropertiesDeviceInfoProvider deviceInfoProvider = new PropertiesDeviceInfoProvider();
deviceInfoProvider.setProperties(properties);
deviceInfoProvider.setLocaleString(Locale.ENGLISH.toString());
// Provide auth token and gsf id you previously saved
PlayStoreApiBuilder builder = new PlayStoreApiBuilder()
// Extend HttpClientAdapter using a http library of your choice
.setHttpClient(new HttpClientAdapterImplementation())
.setDeviceInfoProvider(deviceInfoProvider)
.setToken(token)
.setGsfId(gsfId)
;
GooglePlayAPI api = builder.build();
// API wrapper instance is ready
DetailsResponse response = api.details("com.cpuid.cpu_z");Examples
See tests and the project which this library was made for for examples.
Further studies
Looking through GooglePlay.proto will let you know what responses to expect.
License
play-store-api is Free Software: You can use, study share and improve it at your will. Specifically you can redistribute and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
Credits
play-store-api is a fork of https://github.com/Akdeniz/google-play-crawler play-store-api has protobuf-java built-in. protobuf-java was modified to work with java 1.5 which is required for play-store-api to work on old android versions.