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POSharedPreferences troublesome nullpointerexception
 

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  1. POSharedPreferences troublesome nullpointerexception
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    <p>(REMOVED THE OLD CONTENT OF THE POST)</p> <p>EDIT #2: Okay, so now I am crystal clear that it is the editor trying to reach the preference that causes the nullpointerexception. Any help here on how to fix it?</p> <p>Here is the updated activity:</p> <pre><code> public SharedPreferences sharedPreferences; Editor editor; @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)); // Restore preferences this.sharedPreferences = getPreferences(MODE_PRIVATE); this.editor = sharedPreferences.edit(); try { int wins = GetPreferences("wins"); int fails = GetPreferences("fails"); 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); } @SuppressWarnings("deprecation") @Override public void onBackPressed() { super.onBackPressed(); if (gamePanel.gamei==true) { gamePanel.back(); } else if (gamePanel.menui==true) { finish(); System.runFinalizersOnExit(true); System.exit(0); } } public void onPause() { super.onPause(); //KILL ALL finish(); System.runFinalizersOnExit(true); System.exit(0); } @Override protected void onStop(){ super.onStop(); //KILL ALL finish(); System.runFinalizersOnExit(true); System.exit(0); } public int GetPreferences(String key) { return sharedPreferences.getInt(key, 0); } public void SavePreferences(String key, int value) { editor.putInt(key, value); editor.apply(); } public void writeWin () { SavePreferences("wins", gamePanel.winn); } public void writeFail () { SavePreferences("fails", gamePanel.failn); } </code></pre> <p><em>The editor is what is causing the nullpointerexception: <code>this.editor = sharedPreferences.edit();</code>.</em> EDIT: It's the sharedPreferences that is causing the nullpointerexception, not the editor.</p> <p>It seems like the editor cannot reach the Preference: <code>this.sharedPreferences = getPreferences(MODE_PRIVATE);</code>.</p> <p>Any idea on how to fix this?</p>
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    1. USHenrik Söderlund
    1. USHenrik Söderlund
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    1. COhave you declared a name for your preferences file?
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      1. USAtif Farrukh
    2. COI don't think so. Where do I do that?
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      1. USHenrik Söderlund
    3. COFrom where is `writeSettings` called? Perhaps your activity context is gone by the time it is called.
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      1. USTim
 

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