NonLeakHandler.java

public class NonLeakActivity extends Activity {
  private NonLeakHandler handler = new NonLeakHandler(this);
  
  private static final class NonLeakHandler extends Handler {
    private final WeakReference<NonLeakActivity> ref;
    
    public NonLeakHandler(NonLeakActivity act) {
      ref = new WeakReference<>(act);  
    }
    
    @Override
    public void handleMessage(Message msg) {
      NonLeakActivity act = ref.get();
      if (act != null) {
        // do work  
      }
    }
  }
  
  private static final Runnable runnable = new Runnable() {
    @Override
    public void run() {}
  }
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    
    handler.postDelayed(runnable, 60000);
    finish();
  }
}