StackOverflow2013

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POAndroid Thread Allocation - growing heap?
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copied!<p>Hi everyone out there,</p> <p>i am developing an android application against API 7 at the moment in which i use an activity which need to be restarted. Lets say my activity looks like this:</p> <pre><code>public class AllocActivity extends Activity implements OnClickListener{ Button but; private Handler hand = new Handler(); @Override protected void onCreate(Bundle savedInstanceState) { setContentView(R.layout.activity_alloc); but = (Button) findViewById(R.id.button); but.setText("RELOAD"); but.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0){ Intent intent = getIntent(); startActivity(intent); finish(); } }); } @Override protected void onDestroy(){ super.onDestroy(); System.gc(); } /****** THREADS AND RUNNABLES ******/ final Runnable fullAnim = new Thread(new Runnable(){ @Override public void run(){ try{ hand.post(anim1); Thread.sleep(2000); hand.post(anim2); Thread.sleep(1000); // and so on }catch(InterruptedException ie){ie.printStackTrace();} } }); final Runnable anim1 = new Runnable() { @Override public void run(){ // non-static method findViewById ImageView sky = (ImageView)findViewById(R.id.sky); } }; } </code></pre> <p>The problem is that the gc doesnt seem to free the fullAnim thread so that the heap is growing by ~100K at every restart - till it slows down and crashes. Declaring fullAnim as static does solve this problem - but as i use non static references this doesnt work out for me. </p> <p>So at this point i am kindof lost - and i hope u can advice me where to go next. Is there something i might be doing wrong or is there a tool i can use to manage threads to drop and free heap after restart.</p> <p>kindly regards</p> <p><strong>UPDATE</strong> </p> <p>thanks to everyone who answered - helped alot. using TimerTask did the trick in the end. i did the following change:</p> <pre><code>/****** THREADS AND RUNNABLES ******/ final TimerTask fullAnim = new TimerTask(){ @Override public void run(){ try{ hand.post(anim1); Thread.sleep(2000); hand.post(anim2); Thread.sleep(1000); // and so on }catch(InterruptedException ie){ie.printStackTrace();} } }; </code></pre> <p>as the activity was more than 6k loc long this was a pretty decent solution without facing bigger impacts. KUDOS!</p> <p>i dont use a Timer to shedule the task - dont know if its bad practice but the animation is called like this:</p> <pre><code>Thread t = new Thread(fullAnim); t.start(); </code></pre>

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