infer_clone/infer/tests/codetoanalyze/java/checkers/FragmentDoesNotRetainViewExample.java

/*
 * Copyright (c) 2016 - present Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */

package codetoanalyze.java.checkers;

import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import javax.annotation.Nullable;

public class FragmentDoesNotRetainViewExample extends Fragment {

  class CustomView extends ListView {

    public CustomView(Context c) {
      super(c);
    }

  }

  @Nullable View mView1;
  @Nullable View mView2;
  @Nullable ViewGroup mViewSubclass;
  @Nullable CustomView mCustomView;

  boolean b;

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle bundle) {
    mView1 = inflater.inflate(-1, container, false);
    mView2 = inflater.inflate(-1, container, false);
    mViewSubclass = (ViewGroup) inflater.inflate(-1, container, false);
    mCustomView = (CustomView) inflater.inflate(-1, container, false);
    return container;
  }

  @Override
  public void onDestroyView() {
    mView1 = null;
    if (b) {
      mView2 = null; // conditional nulling is still ok
    }
    mCustomView = null;
    mViewSubclass = null;
  }

}