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POnullpointerexception when trying to reach activity
 

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  1. POnullpointerexception when trying to reach activity
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    <p>I am getting nullpointerexception when trying to reach my activity and change some ints. This is what it looks like: <em>MainActivity.java</em></p> <pre><code> public class MainActivity extends Activity { public static SoundManager mSoundManager = new SoundManager(); private static final String TAG = MainActivity.class.getSimpleName(); private MainGamePanel gamePanel; SharedPreferences myPrefs; public int win = 0; public int fail = 0; int wins = 0; int fails = 0; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // requesting to turn the title OFF requestWindowFeature(Window.FEATURE_NO_TITLE); // making it full screen getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); // set our MainGamePanel as the View setContentView(new MainGamePanel(this)); myPrefs = this.getSharedPreferences("hgbdata", 0); try { wins = myPrefs.getInt("wins", 0); fails = myPrefs.getInt("fails", 0); if ((wins != 0) &amp;&amp; (fails != 0)) { gamePanel.winn = wins; gamePanel.failn = fails; } } catch (NullPointerException npe) { Log.d(TAG, "Nothing to load"); } //INIT SOUND mSoundManager.initSounds(getBaseContext()); //SOUNDS mSoundManager.addSound(1, R.raw.draw); mSoundManager.addSound(2, R.raw.cheer); mSoundManager.addSound(3, R.raw.boo); } . . . public void win() { win++; } public void fail() { fail++; } } </code></pre> <p>This is where I am trying to reach the activity from: <em>MainGamePanel.java</em></p> <pre><code>public class MainGamePanel extends SurfaceView implements SurfaceHolder.Callback { private static final String TAG = MainGamePanel.class.getSimpleName(); private MainThread thread; private MainActivity activity; . . . public void update() { //somewhere inside the update() activity.win(); . . . activity.fail(); } } </code></pre> <p>This is the log:</p> <pre><code>11-18 10:23:47.336: D/MainThread(1190): Starting game loop 11-18 10:23:47.336: D/MainThread.initTimingElements()(1190): Timing elements for stats initialised 11-18 10:23:47.386: D/gralloc_goldfish(1190): Emulator without GPU emulation detected. 11-18 10:24:19.925: D/dalvikvm(1190): GC_CONCURRENT freed 356K, 2% free 28540K/28999K, paused 132ms+30ms, total 441ms 11-18 10:24:20.965: W/dalvikvm(1190): threadid=13: thread exiting with uncaught exception (group=0x40a13300) 11-18 10:24:20.965: E/AndroidRuntime(1190): FATAL EXCEPTION: Thread-105 11-18 10:24:20.965: E/AndroidRuntime(1190): java.lang.NullPointerException 11-18 10:24:20.965: E/AndroidRuntime(1190): at com.nti.hanga.gubbe.MainGamePanel.update(MainGamePanel.java:591) 11-18 10:24:20.965: E/AndroidRuntime(1190): at com.nti.hanga.gubbe.MainThread.run(MainThread.java:92) 11-18 10:24:21.235: I/AndroidRuntime(1190): VM exiting with result code 0, cleanup skipped. </code></pre> <p><code>MainGamePanel.java:591</code> is <code>activity.win();</code></p> <p>Thank you for your help.</p>
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    1. USHenrik Söderlund
    1. USHenrik Söderlund
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    1. COthere is no code that assigns MainActivity to your "activity" reference
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      1. POnullpointerexception when trying to reach activity
      1. USendryha
 

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