Java tutorial
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*- * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ package org.mozilla.focus.fragment; import android.content.Context; import android.os.Bundle; import android.preference.PreferenceManager; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.transition.Transition; import android.transition.TransitionInflater; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import org.mozilla.focus.R; import org.mozilla.focus.activity.MainActivity; public class FirstrunFragment extends Fragment implements View.OnClickListener { public static final String FRAGMENT_TAG = "firstrun"; public static final String FIRSTRUN_PREF = "firstrun_shown"; public static FirstrunFragment create() { return new FirstrunFragment(); } @Override public void onAttach(Context context) { super.onAttach(context); final Transition transition = TransitionInflater.from(context) .inflateTransition(R.transition.firstrun_exit); setExitTransition(transition); } @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { final View view = inflater.inflate(R.layout.fragment_firstrun, container, false); view.findViewById(R.id.firstrun_exitbutton).setOnClickListener(this); return view; } @Override public void onClick(View v) { PreferenceManager.getDefaultSharedPreferences(getContext()).edit().putBoolean(FIRSTRUN_PREF, true).apply(); ((MainActivity) getActivity()).firstrunFinished(); } }