Updated libraries and dependencies.

app/build.gradle

@@ -1,20 +1,20 @@
 project.ext {
-    appcompat = "25.3.1"
-    arch = "1.0.0-alpha1"
-    retrofit = "2.0.2"
-    constraintLayout = "1.0.2"
+    support = "27.1.1"
+    arch = "1.1.1"
+    retrofit = "2.4.0"
+    constraintLayout = "1.1.0"
     dagger_version = "2.11"
 }
 
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.3"
+    compileSdkVersion 27
+    buildToolsVersion '27.0.3'
     defaultConfig {
         applicationId "com.example.test.mvvm_sample_app"
         minSdkVersion 19
-        targetSdkVersion 25
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -36,29 +36,30 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
 
-    compile "com.android.support:appcompat-v7:$project.appcompat"
-    compile "com.android.support:cardview-v7:$project.appcompat"
-    compile "com.android.support:recyclerview-v7:$project.appcompat"
-    compile "android.arch.lifecycle:runtime:$project.arch"
-    compile "android.arch.lifecycle:extensions:$project.arch"
-    compile "com.squareup.retrofit2:retrofit:$project.retrofit"
-    compile "com.squareup.retrofit2:converter-gson:$project.retrofit"
+    implementation "com.android.support:appcompat-v7:$project.support"
+    implementation "com.android.support:design:$project.support"
+    implementation "com.android.support:cardview-v7:$project.support"
+    implementation "com.android.support:recyclerview-v7:$project.support"
+    implementation "com.android.support:support-v4:$project.support"
+    implementation "com.android.support.constraint:constraint-layout:$project.constraintLayout"
+
+    implementation "android.arch.lifecycle:runtime:$project.arch"
+    implementation "android.arch.lifecycle:extensions:$project.arch"
+    implementation "com.squareup.retrofit2:retrofit:$project.retrofit"
+    implementation "com.squareup.retrofit2:converter-gson:$project.retrofit"
     annotationProcessor "android.arch.lifecycle:compiler:$project.arch"
-    compile "com.android.support.constraint:constraint-layout:$project.constraintLayout"
-    compile "com.android.support:support-v4:$project.appcompat"
 
-    compile "com.google.dagger:dagger:$project.dagger_version"
-    compile "com.google.dagger:dagger-android:$project.dagger_version"
-    compile "com.google.dagger:dagger-android-support:$project.dagger_version"
+    implementation "com.google.dagger:dagger:$project.dagger_version"
+    implementation "com.google.dagger:dagger-android:$project.dagger_version"
+    implementation "com.google.dagger:dagger-android-support:$project.dagger_version"
 
     annotationProcessor "com.google.dagger:dagger-android-processor:$dagger_version"
     annotationProcessor "com.google.dagger:dagger-compiler:$dagger_version"
 
-    testCompile 'junit:junit:4.12'
-    compile 'com.android.support:design:25.3.1'
+    testImplementation 'junit:junit:4.12'
 }

app/src/main/java/com/example/test/mvvmsampleapp/service/repository/GitHubService.java

@@ -14,6 +14,6 @@ public interface GitHubService {
     @GET("users/{user}/repos")
     Call<List<Project>> getProjectList(@Path("user") String user);
 
-    @GET("/repos/{user}/{reponame}")
+    @GET("repos/{user}/{reponame}")
     Call<Project> getProjectDetails(@Path("user") String user, @Path("reponame") String projectName);
 }

app/src/main/java/com/example/test/mvvmsampleapp/view/ui/MainActivity.java

@@ -1,9 +1,9 @@
 package com.example.test.mvvmsampleapp.view.ui;
 
-import android.arch.lifecycle.LifecycleActivity;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v4.app.Fragment;
+import android.support.v7.app.AppCompatActivity;
 
 import com.example.test.mvvmsampleapp.R;
 import com.example.test.mvvmsampleapp.service.model.Project;
@@ -13,7 +13,7 @@
 import dagger.android.DispatchingAndroidInjector;
 import dagger.android.support.HasSupportFragmentInjector;
 
-public class MainActivity extends LifecycleActivity implements HasSupportFragmentInjector {
+public class MainActivity extends AppCompatActivity implements HasSupportFragmentInjector {
 
     @Inject
     DispatchingAndroidInjector<Fragment> dispatchingAndroidInjector;

app/src/main/java/com/example/test/mvvmsampleapp/view/ui/ProjectFragment.java

@@ -1,12 +1,12 @@
 package com.example.test.mvvmsampleapp.view.ui;
 
-import android.arch.lifecycle.LifecycleFragment;
 import android.arch.lifecycle.Observer;
 import android.arch.lifecycle.ViewModelProvider;
 import android.arch.lifecycle.ViewModelProviders;
 import android.databinding.DataBindingUtil;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
+import android.support.v4.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -19,7 +19,7 @@
 
 import javax.inject.Inject;
 
-public class ProjectFragment extends LifecycleFragment implements Injectable {
+public class ProjectFragment extends Fragment implements Injectable {
     private static final String KEY_PROJECT_ID = "project_id";
     private FragmentProjectDetailsBinding binding;
 

app/src/main/java/com/example/test/mvvmsampleapp/view/ui/ProjectListFragment.java

@@ -1,13 +1,13 @@
 package com.example.test.mvvmsampleapp.view.ui;
 
 import android.arch.lifecycle.Lifecycle;
-import android.arch.lifecycle.LifecycleFragment;
 import android.arch.lifecycle.Observer;
 import android.arch.lifecycle.ViewModelProvider;
 import android.arch.lifecycle.ViewModelProviders;
 import android.databinding.DataBindingUtil;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
+import android.support.v4.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -24,7 +24,7 @@
 
 import javax.inject.Inject;
 
-public class ProjectListFragment extends LifecycleFragment  implements Injectable {
+public class ProjectListFragment extends Fragment implements Injectable {
     public static final String TAG = "ProjectListFragment";
     private ProjectAdapter projectAdapter;
     private FragmentProjectListBinding binding;

build.gradle

@@ -11,7 +11,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0-alpha5'
+        classpath 'com.android.tools.build:gradle:3.1.2'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Mon May 29 15:39:33 EDT 2017
+#Thu May 24 12:54:18 CEST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-milestone-1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip