How to use

onDestroy

method

in

android.preference.PreferenceFragment

@Override
public void onDestroy() {
  super.onDestroy();
  mDownloadLocation = null;
}

@Override
public void onDestroy() {
 prefDocTree
  .getSharedPreferences()
  .unregisterOnSharedPreferenceChangeListener(this);
 super.onDestroy();
}

@Override
@CallSuper
public void onDestroy() {
  lifecycleSubject.onNext(FragmentEvent.DESTROY);
  super.onDestroy();
}

  @Override
  public void onDestroy() {
    super.onDestroy();

    intent = null;
  }
}

@Override
public void onDestroy() {
  super.onDestroy();
  checkBoxPreference = null;
}

@Override
public void onDestroy() {
  super.onDestroy();
}

@Override
public void onDestroy() {
  if (mSyncthingService != null) {
    mSyncthingService.unregisterOnServiceStateChangeListener(this);
  }
  super.onDestroy();
}

@Override
public void onDestroy() {
  super.onDestroy();
  mPasswordManagerHandler.destroy();
}

@Override
public void onDestroy() {
  dbHelper.close();
  super.onDestroy();
}

@Override
public void onDestroy() {
  super.onDestroy();
  this.doUnbindService();
}

@Override
public void onDestroy() {
  super.onDestroy();
  helper.end();
}

@Override
public void onDestroy() {
  getSharedPreferences().unregisterOnSharedPreferenceChangeListener(
      mSharedPreferenceChangeListener);
  super.onDestroy();
}

@Override
public void onDestroy() {
  super.onDestroy();
  getPreferenceManager().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
}

@Override
public void onDestroy() {
  super.onDestroy();
  getPreferenceManager().getSharedPreferences()
      .unregisterOnSharedPreferenceChangeListener(mPreferenceChangeListener);
}

@Override
public void onDestroy() {
  super.onDestroy();
  Commander.removeChangeListener(listener);
  Commander.removeFailureListener(listener);
}

@Override
public void onDestroy() {
  super.onDestroy();
  // Allow sync to begin syncing if it hasn't yet.
  ProfileSyncService syncService = ProfileSyncService.get();
  if (syncService != null) {
    syncService.setSetupInProgress(false);
  }
}

@Override
public void onDestroy() {
  super.onDestroy();
  dismissProgressDialog();
  for (Item item : mItems) {
    item.destroy();
  }
}

  @Override
  public void onDestroy() {
    if (mRotationLockObserver != null) {
      getActivity().getContentResolver().unregisterContentObserver(mRotationLockObserver);
      mRotationLockObserver = null;
    }
    super.onDestroy();
  }
}

  @Override
  public void onDestroy() {
    if (mRotationLockObserver != null) {
      getActivity().getContentResolver().unregisterContentObserver(mRotationLockObserver);
      mRotationLockObserver = null;
    }
    super.onDestroy();
  }
}

@Override
public void onDestroy() {
  unregisterStateReceiver();
  hidDataSender.unregister(getContext(), profileListener);
  super.onDestroy();
}