title: Warning: Activity not started , its current task has been brought to the front
body: <p>While working though a book on Android game development, I came across the follwing warning in eclipse: 
  <code>ActivityManager: Warning: Activity not started, its current task has been brought to the front</code></p>
  
  <p>Basically, I have 3 projects;Mr.Snake,Mr.Snake.Framework and Mr.Snakey .</p>
  
  <p><strong>In my Mr.Snake file, I have :</strong></p>
  
  <pre><code>/Mr.Snake/src/com/zardapps/framework/Audio.java
  /Mr.Snake/src/com/zardapps/framework/FileIO.java
  /Mr.Snake/src/com/zardapps/framework/Game.java
  /Mr.Snake/src/com/zardapps/framework/Graphics.java
  /Mr.Snake/src/com/zardapps/framework/Input.java
  /Mr.Snake/src/com/zardapps/framework/Music.java
  /Mr.Snake/src/com/zardapps/framework/MySuperAwesomeGame.java
  /Mr.Snake/src/com/zardapps/framework/Pixmap.java
  /Mr.Snake/src/com/zardapps/framework/Screen.java
  /Mr.Snake/src/com/zardapps/framework/Sound.java
  </code></pre>
  
  <p><strong>In my Mr.Snake.Framework, I have :</strong></p>
  
  <pre><code>/Mr.Snake.Framework/src/com/zardtechnologies/androidgames/framework/impl/AndroidAudio.java
  /Mr.Snake.Framework/src/com/zardtechnologies/androidgames/framework/impl/AndroidFileIO.java
  /Mr.Snake.Framework/src/com/zardtechnologies/androidgames/framework/impl/AndroidGame.java
  /Mr.Snake.Framework/src/com/zardtechnologies/androidgames/framework/impl/AndroidGraphics.java
  /Mr.Snake.Framework/src/com/zardtechnologies/androidgames/framework/impl/AndroidInput.java
  /Mr.Snake.Framework/src/com/zardtechnologies/androidgames/framework/impl/AndroidMusic.java
  /Mr.Snake.Framework/src/com/zardtechnologies/androidgames/framework/impl/AndroidPixmap.java
  /Mr.Snake.Framework/src/com/zardtechnologies/androidgames/framework/impl/AndroidSound.java
  /Mr.Snake.Framework/src/com/zardtechnologies/androidgames/framework/impl/KeyboardHandler.java
  /Mr.Snake.Framework/src/com/zardtechnologies/androidgames/framework/impl/MultiTouchHandler.java
  /Mr.Snake.Framework/src/com/zardtechnologies/androidgames/framework/impl/Pool.java
  /Mr.Snake.Framework/src/com/zardtechnologies/androidgames/framework/impl/SingleTouchHandler.java
  /Mr.Snake.Framework/src/com/zardtechnologies/androidgames/framework/impl/TouchHandler.java
  /Mr.Snake.Framework/src/com/zardtechnologies/androidgames/framework/impl/AndroidFastRenderV have :iew.java
  </code></pre>
  
  <p><strong>In my Mr.Snakey, I have :</strong></p>
  
  <pre><code>/Mr.Snakey/src/com/zardtechnologies/mrsnakey/Assets.java
  /Mr.Snakey/src/com/zardtechnologies/mrsnakey/GameScreen.java
  /Mr.Snakey/src/com/zardtechnologies/mrsnakey/HighscoreScreen.java
  /Mr.Snakey/src/com/zardtechnologies/mrsnakey/LoadingScreen.java
  /Mr.Snakey/src/com/zardtechnologies/mrsnakey/MainMenuScreen.java
  /Mr.Snakey/src/com/zardtechnologies/mrsnakey/MrSnakey.java
  /Mr.Snakey/src/com/zardtechnologies/mrsnakey/Settings.java
  /Mr.Snakey/src/com/zardtechnologies/mrsnakey/Snake.java
  /Mr.Snakey/src/com/zardtechnologies/mrsnakey/SnakePart.java
  /Mr.Snakey/src/com/zardtechnologies/mrsnakey/Stain.java
  </code></pre>
  
  <p><strong>These are the three projects that make up my MrSnakey game.
  Currently, the error I get from the console</strong></p>
  
  <pre><code>[2012-04-26 21:56:59 - Mr.Snakey] Android Launch!
  [2012-04-26 21:56:59 - Mr.Snakey] adb is running normally.
  [2012-04-26 21:56:59 - Mr.Snakey] Performing com.zardtechnologies.mrsnakey.MrSnakey activity launch
  [2012-04-26 21:56:59 - Mr.Snakey] Automatic Target Mode: using existing emulator 'emulator-5554' running compatible AVD 'Test.Phone'
  [2012-04-26 21:57:02 - Mr.Snakey] Application already deployed. No need to reinstall.
  [2012-04-26 21:57:02 - Mr.Snake.Framework] Could not find Mr.Snake.Framework.apk!
  [2012-04-26 21:57:02 - Mr.Snake] Could not find Mr.Snake.apk!
  [2012-04-26 21:57:02 - Mr.Snakey] Starting activity com.zardtechnologies.mrsnakey.MrSnakey on device emulator-5554
  [2012-04-26 21:57:04 - Mr.Snakey] ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.zardtechnologies.mrsnakey/.MrSnakey }
  [2012-04-26 21:57:04 - Mr.Snakey] ActivityManager: Warning: Activity not started, its current task has been brought to the front
  [2012-04-26 21:58:20 - Mr.Snakey] ------------------------------
  [2012-04-26 21:58:20 - Mr.Snakey] Android Launch!
  [2012-04-26 21:58:20 - Mr.Snakey] adb is running normally.
  [2012-04-26 21:58:20 - Mr.Snakey] Performing com.zardtechnologies.mrsnakey.MrSnakey activity launch
  [2012-04-26 21:58:20 - Mr.Snakey] Automatic Target Mode: using existing emulator 'emulator-5554' running compatible AVD 'Test.Phone'
  [2012-04-26 21:58:22 - Mr.Snakey] Application already deployed. No need to reinstall.
  [2012-04-26 21:58:22 - Mr.Snakey] Project dependency found, installing: Mr.Snake.Framework
  [2012-04-26 21:58:22 - Mr.Snake.Framework] Uploading Mr.Snake.Framework.apk onto device 'emulator-5554'
  [2012-04-26 21:58:25 - Mr.Snake.Framework] Installing Mr.Snake.Framework.apk...
  [2012-04-26 21:58:52 - Mr.Snake.Framework] Success!
  [2012-04-26 21:58:52 - Mr.Snake.Framework] Project dependency found, installing: Mr.Snake
  [2012-04-26 21:58:52 - Mr.Snake] Uploading Mr.Snake.apk onto device 'emulator-5554'
  [2012-04-26 21:58:54 - Mr.Snake] Installing Mr.Snake.apk...
  [2012-04-26 21:59:16 - Mr.Snake] Success!
  [2012-04-26 21:59:16 - Mr.Snakey] Project dependency found, installing: Mr.Snake
  [2012-04-26 21:59:18 - Mr.Snake] Application already deployed. No need to reinstall.
  [2012-04-26 21:59:18 - Mr.Snakey] Starting activity com.zardtechnologies.mrsnakey.MrSnakey on device emulator-5554
  [2012-04-26 21:59:20 - Mr.Snakey] ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.zardtechnologies.mrsnakey/.MrSnakey }
  [2012-04-26 21:59:20 - Mr.Snakey] ActivityManager: Warning: Activity not started, its current task has been brought to the front
  </code></pre>
  
  <p><strong>My Mr.Snakey Activity file is here:</strong></p>
  
  <pre><code>package com.zardtechnologies.mrsnakey;
  
  import com.zardapps.framework.Screen;
  import com.zardtechnologies.androidgames.framework.impl.AndroidGame;
  
  public class MrSnakey extends AndroidGame {
  
      public Screen getStartScreen() {
          return new LoadingScreen(this);
      }
  
  
  
  
  }
  </code></pre>
  
  <p><strong>It links the file from the AndroidGame , which is located at framework impl project:</strong></p>
  
  <pre><code>package com.zardtechnologies.androidgames.framework.impl;
  
  import android.app.Activity;
  import android.content.Context;
  import android.content.res.Configuration;
  import android.graphics.Bitmap;
  import android.graphics.Bitmap.Config;
  import android.os.Bundle;
  import android.os.PowerManager;
  import android.os.PowerManager.WakeLock;
  import android.view.Window;
  import android.view.WindowManager;
  
  import com.zardapps.framework.Audio;
  import com.zardapps.framework.FileIO;
  import com.zardapps.framework.Game;
  import com.zardapps.framework.Graphics;
  import com.zardapps.framework.Input;
  import com.zardapps.framework.Screen;
  
  public abstract class AndroidGame extends Activity implements Game {
      AndroidFastRenderView renderView;
      Graphics graphics;
      Audio audio;
      Input input;
      FileIO fileIO;
      Screen screen;
      WakeLock wakeLock;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
  
          requestWindowFeature(Window.FEATURE_NO_TITLE);
          getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                  WindowManager.LayoutParams.FLAG_FULLSCREEN);
          boolean isLandscape = getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE;
          int frameBufferWidth = isLandscape ? 480 : 320;
          int frameBufferHeight = isLandscape ? 320 : 480;
          Bitmap frameBuffer = Bitmap.createBitmap(frameBufferWidth,
                  frameBufferHeight, Config.RGB_565);
  
          float scaleX = (float) frameBufferWidth
                  / getWindowManager().getDefaultDisplay().getWidth();
          float scaleY = (float) frameBufferHeight
                  / getWindowManager().getDefaultDisplay().getHeight();
  
          renderView = new AndroidFastRenderView(this, frameBuffer);
          graphics = new AndroidGraphics(getAssets(), frameBuffer);
          fileIO = new AndroidFileIO(getAssets());
          audio = new AndroidAudio(this);
          input = new AndroidInput(this, renderView, scaleX, scaleY);
          screen = getStartScreen();
          setContentView(renderView);
  
          PowerManager powerManager = (PowerManager) getSystemService(Context.POWER_SERVICE);
          wakeLock = powerManager.newWakeLock(PowerManager.FULL_WAKE_LOCK,
                  "GLGAME");
  
      }
  
      public void onResume() {
          super.onResume();
          wakeLock.acquire();
          screen.resume();
          renderView.resume();
      }
  
      public void onPause() {
          super.onPause();
          wakeLock.release();
          renderView.pause();
          screen.pause();
  
          if (isFinishing())
              screen.dispose();
      }
  
      public Input getInput() {
          return input;
      }
  
      public FileIO getFileIO() {
          return fileIO;
      }
  
      public Graphics getGraphics() {
          return graphics;
      }
  
      public Audio getAudio() {
          return audio;
      }
  
      public void setScreen(Screen screen) {
          if (screen == null)
              throw new IllegalArgumentException("Screen must not be null");
          this.screen.pause();
          this.screen.dispose();
          screen.resume();
          screen.update(0);
          this.screen = screen;
      }
  
      public Screen getCurrentScreen() {
          return screen;
      }
  }
  </code></pre>
  
  <p><strong>In which the game is from framework project</strong></p>
  
  <pre><code>package com.zardapps.framework;
  public interface Game {
      public Input getInput();
      public FileIO getFileIO();
      public Graphics getGraphics();
      public Audio getAudio();
      public void setScreen(Screen screen);
      public Screen getCurrentScreen();
      public Screen getStartScreen();
  }
  </code></pre>
  
  <p><strong>My Mr.Snakey Manifest :</strong></p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.zardtechnologies.mrsnakey"
      android:versionCode="1"
      android:versionName="1.0" &gt;
  
      &lt;application
          android:debuggable="true"
          android:icon="@drawable/ic_launcher"
          android:label="Mr.Snakey" &gt;
          &lt;activity
              android:name=".MrSnakey"
              android:configChanges="keyboard|keyboardHidden|orientation"
              android:label="Mr.Snakey"
              android:screenOrientation="portrait" &gt;
              &lt;intent-filter&gt;
                  &lt;action android:name="android.intent.action.MAIN" /&gt;
  
                  &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
              &lt;/intent-filter&gt;
          &lt;/activity&gt;
      &lt;/application&gt;
  
      &lt;uses-permission android:name="android.permission.WAKE_LOCK" /&gt;
      &lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /&gt;
  
      &lt;uses-sdk
          android:minSdkVersion="3"
          android:targetSdkVersion="12" /&gt;
  
  &lt;/manifest&gt;
  </code></pre>
  
  <p>Basically, I cant find the root of problem to the error; <strong>ActivityManager: Warning: Activity not started, its current task has been brought to the front</strong> I am currently using an emulator in eclipse. I have tried to rebuild my project , reinstall it and clean it but nothing works for me. I appreciate the time you guys have taken to read such a long post I have written.</p>