update libs version

app/build.gradle

@@ -2,7 +2,7 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion 26
-    buildToolsVersion '26.0.1'
+    buildToolsVersion '26.0.2'
 
     defaultConfig {
         applicationId "com.example.android.sunshine"

app/src/main/java/com/example/android/sunshine/ui/detail/DetailActivity.java

@@ -15,10 +15,10 @@
  */
 package com.example.android.sunshine.ui.detail;
 
-import android.arch.lifecycle.LifecycleActivity;
 import android.arch.lifecycle.ViewModelProviders;
 import android.databinding.DataBindingUtil;
 import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
 
 import com.example.android.sunshine.R;
 import com.example.android.sunshine.data.database.WeatherEntry;
@@ -32,7 +32,7 @@
 /**
  * Displays single day's forecast
  */
-public class DetailActivity extends LifecycleActivity {
+public class DetailActivity extends AppCompatActivity {
 
     public static final String WEATHER_ID_EXTRA = "WEATHER_ID_EXTRA";
 

app/src/main/java/com/example/android/sunshine/ui/list/MainActivity.java

@@ -15,10 +15,10 @@
  */
 package com.example.android.sunshine.ui.list;
 
-import android.arch.lifecycle.LifecycleActivity;
 import android.arch.lifecycle.ViewModelProviders;
 import android.content.Intent;
 import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.view.View;
@@ -34,7 +34,7 @@
 /**
  * Displays a list of the next 14 days of forecasts
  */
-public class MainActivity extends LifecycleActivity implements
+public class MainActivity extends AppCompatActivity implements
         ForecastAdapter.ForecastAdapterOnItemClickHandler {
 
     private ForecastAdapter mForecastAdapter;

build.gradle

@@ -6,16 +6,16 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0-beta2'
+        classpath 'com.android.tools.build:gradle:3.0.0-beta7'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
     }
 }
 
-ext.arch_version = "1.0.0-alpha8"
-ext.support_version = "26.0.1"
-ext.constraint_layout_version = "1.1.0-beta1"
+ext.arch_version = "1.0.0-alpha9-1"
+ext.support_version = "26.1.0"
+ext.constraint_layout_version = "1.1.0-beta2"
 ext.firebase_jobdispatcher_version = "0.7.0"
 ext.junit_version = "4.12"
 ext.support_test_version = "1.0.0"

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Thu Aug 03 09:55:05 PDT 2017
+#Mon Oct 09 15:17:20 BRT 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-rc-1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip