Add Firebase and support lib

app/src/main/AndroidManifest.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+<manifest
+    xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.traccar.manager">
 
     <uses-permission android:name="android.permission.INTERNET" />

app/src/main/java/org/traccar/manager/MainActivity.java

@@ -15,11 +15,11 @@
  */
 package org.traccar.manager;
 
-import android.app.Activity;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
+import android.support.v7.app.AppCompatActivity;
 
-public class MainActivity extends Activity {
+public class MainActivity extends AppCompatActivity {
 
     public static final String PREFERENCE_URL = "url";
 

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@color/ic_launcher_background"/>
+    <background android:drawable="@color/primary"/>
     <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
 </adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@color/ic_launcher_background"/>
+    <background android:drawable="@color/primary"/>
     <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
 </adaptive-icon>

app/src/main/res/values-v21/styles.xml

@@ -1,4 +0,0 @@
-<resources>
-    <style name="AppTheme" parent="android:Theme.Material.Light.NoActionBar">
-    </style>
-</resources>

app/src/main/res/values/colors.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <color name="primary">#1E88E5</color>
+    <color name="primary_dark">#1565C0</color>
+    <color name="accent">#1976D2</color>
+    <color name="white">#FFFFFF</color>
+
+</resources>

app/src/main/res/values/ic_launcher_background.xml

@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-  <color name="ic_launcher_background">#1E88E5</color>
-</resources>

app/src/main/res/values/styles.xml

@@ -1,4 +0,0 @@
-<resources>
-    <style name="AppTheme" parent="android:Theme.Holo.Light.NoActionBar">
-    </style>
-</resources>

app/src/main/res/values/themes.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
+        <item name="colorPrimary">@color/primary</item>
+        <item name="colorPrimaryDark">@color/primary_dark</item>
+        <item name="colorAccent">@color/accent</item>
+    </style>
+
+</resources>