refactor: GoogleCredential to GoogleCredentials (#36)

Author: kroikie

config/build.gradle

@@ -23,6 +23,6 @@ run {
 
 dependencies {
  testCompile group: 'junit', name: 'junit', version: '4.12'
- compile 'com.google.api-client:google-api-client:1.22.0'
- compile 'com.google.code.gson:gson:2.7'
+ compile 'com.google.auth:google-auth-library-oauth2-http:0.26.0'
+ compile 'com.google.code.gson:gson:2.8.7'
 }

config/src/main/java/com/google/firebase/samples/config/Configure.java

@@ -1,6 +1,6 @@
 packagecom.google.firebase.samples.config;
 
-importcom.google.api.client.googleapis.auth.oauth2.GoogleCredential;
+importcom.google.auth.oauth2.GoogleCredentials;
 importcom.google.gson.Gson;
 importcom.google.gson.GsonBuilder;
 importcom.google.gson.JsonElement;
@@ -18,7 +18,6 @@
 importjava.net.HttpURLConnection;
 importjava.net.URL;
 importjava.util.Arrays;
-importjava.util.Collections;
 importjava.util.Scanner;
 importjava.util.zip.GZIPInputStream;
 importjava.util.zip.GZIPOutputStream;
@@ -42,11 +41,11 @@ public class Configure {
  */
 // [START retrieve_access_token]
 privatestaticStringgetAccessToken() throwsIOException {
-GoogleCredentialgoogleCredential = GoogleCredential
- .fromStream(newFileInputStream("service-account.json"))
- .createScoped(Arrays.asList(SCOPES));
-googleCredential.refreshToken();
-returngoogleCredential.getAccessToken();
+GoogleCredentialsgoogleCredentials = GoogleCredentials
+.fromStream(newFileInputStream("service-account.json"))
+.createScoped(Arrays.asList(SCOPES));
+googleCredentials.refreshAccessToken();
+returngoogleCredentials.getAccessToken().getTokenValue();
  }
 // [END retrieve_access_token]
 
@@ -276,4 +275,4 @@ public static void main(String[] args) throws IOException {
  }
  }
 
-}
+}