change the package name

app/build.gradle

@@ -5,7 +5,7 @@ android {
     buildToolsVersion "23.0.2"
 
     defaultConfig {
-        applicationId "draw.simplemobiletools.com"
+        applicationId "com.simplemobiletools.draw"
         minSdkVersion 16
         targetSdkVersion 23
         versionCode 1

app/src/androidTest/java/com/simplemobiletools/draw/ApplicationTest.java

@@ -1,4 +1,4 @@
-package draw.simplemobiletools.com;
+package com.simplemobiletools.draw;
 
 import android.app.Application;
 import android.test.ApplicationTestCase;

app/src/main/AndroidManifest.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest
-    package="draw.simplemobiletools.com"
+    package="com.simplemobiletools.draw"
     xmlns:android="http://schemas.android.com/apk/res/android">
 
     <application
@@ -10,7 +10,7 @@
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
         <activity
-            android:name=".MainActivity"
+            android:name="com.simplemobiletools.draw.MainActivity"
             android:screenOrientation="portrait">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>

app/src/main/java/com/simplemobiletools/draw/MainActivity.java

@@ -1,4 +1,4 @@
-package draw.simplemobiletools.com;
+package com.simplemobiletools.draw;
 
 import android.graphics.Color;
 import android.os.Bundle;

app/src/main/java/com/simplemobiletools/draw/MyCanvas.java

@@ -1,4 +1,4 @@
-package draw.simplemobiletools.com;
+package com.simplemobiletools.draw;
 
 import android.content.Context;
 import android.graphics.Canvas;

app/src/main/res/layout/activity_main.xml

@@ -3,10 +3,9 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
+    android:layout_height="match_parent">
-    tools:context="draw.simplemobiletools.com.MainActivity">
 
-    <draw.simplemobiletools.com.MyCanvas
+    <com.simplemobiletools.draw.MyCanvas
         android:id="@+id/my_canvas"
         android:layout_width="match_parent"
         android:layout_height="match_parent"/>

app/src/test/java/draw/simplemobiletools/com/ExampleUnitTest.java

@@ -1,4 +1,4 @@
-package draw.simplemobiletools.com;
+package com.simplemobiletools.draw;
 
 import org.junit.Test;