Java tutorial
/* * Copyright (c) 2016. Pedro Diaz <igoticecream@gmail.com> * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.alucas.snorlax.app.home; import java.util.concurrent.TimeUnit; import android.content.SharedPreferences; import android.os.Bundle; import android.support.design.widget.CoordinatorLayout; import android.support.design.widget.FloatingActionButton; import android.support.design.widget.Snackbar; import android.support.design.widget.TabLayout; import android.support.v4.view.PagerAdapter; import android.support.v4.view.ViewPager; import android.support.v7.app.AlertDialog; import android.support.v7.app.AppCompatActivity; import android.support.v7.preference.PreferenceManager; import android.support.v7.widget.Toolbar; import android.view.Menu; import android.view.MenuItem; import com.alucas.snorlax.BuildConfig; import com.alucas.snorlax.R; import com.alucas.snorlax.app.SnorlaxApp; import com.jakewharton.rxbinding.view.RxView; import butterknife.BindView; import butterknife.ButterKnife; import butterknife.Unbinder; import rx.Observable; @SuppressWarnings("squid:MaximumInheritanceDepth") public class HomeActivity extends AppCompatActivity { @BindView(R.id.coordinator) CoordinatorLayout mCoordinatorLayout; @BindView(R.id.toolbar) Toolbar mToolbar; @BindView(R.id.fab) FloatingActionButton mFab; @BindView(R.id.tab) TabLayout mTabLayout; @BindView(R.id.pager) ViewPager mViewPager; private Unbinder mUnbinder; private AlertDialog mAboutDialog; private AlertDialog mDonationDialog; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_home); mUnbinder = ButterKnife.bind(this); setupToolbar(); setupPreferences(); setupViewPager(); if (savedInstanceState == null) { Observable.just(SnorlaxApp.isEnabled()).filter(enabled -> !enabled) .map(enabled -> getPackageManager().getLaunchIntentForPackage(BuildConfig.XPOSED_ID)) .map(intent -> { if (intent != null) { return Snackbar.make(mFab, R.string.error_xposed_disabled, Snackbar.LENGTH_LONG) .setAction(R.string.enable, v -> startActivity(intent)); } else { return Snackbar.make(mFab, R.string.error_xposed_missing, Snackbar.LENGTH_LONG); } }).subscribe(Snackbar::show); } RxView.clicks(mFab).throttleFirst(3, TimeUnit.SECONDS) .map(click -> getPackageManager().getLaunchIntentForPackage(BuildConfig.POKEMON_GO_ID)) .doOnNext(intent -> { if (intent == null) { Snackbar.make(mFab, R.string.error_pokemon_missing, Snackbar.LENGTH_LONG).show(); } }).filter(intent -> intent != null).subscribe(this::startActivity); checkIfFirstTime(); } private void setupToolbar() { setSupportActionBar(mToolbar); } private void setupPreferences() { PreferenceManager.setDefaultValues(this, R.xml.preferences, false); PreferenceManager.setDefaultValues(this, R.xml.preferences_advanced, false); } private void setupViewPager() { PagerAdapter adapter = new HomeViewPagerAdapter(getSupportFragmentManager()); mViewPager.setAdapter(adapter); mViewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(mTabLayout)); mTabLayout.setupWithViewPager(mViewPager); mTabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() { @Override public void onTabSelected(TabLayout.Tab tab) { if (mViewPager != null) { mViewPager.setCurrentItem(tab.getPosition()); } } @Override public void onTabUnselected(TabLayout.Tab tab) { // Nothing special to do } @Override public void onTabReselected(TabLayout.Tab tab) { // Nothing special to do } }); } private void checkIfFirstTime() { final String version = "version"; SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this); if (preferences.getInt(version, -1) < BuildConfig.VERSION_CODE) { mDonationDialog = HomeDialog.showDonation(this); preferences.edit().putInt(version, BuildConfig.VERSION_CODE).apply(); } } @Override protected void onDestroy() { super.onDestroy(); mUnbinder.unbind(); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.menu_home, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.about: mAboutDialog = HomeDialog.showAbout(this); return true; case R.id.donation: mDonationDialog = HomeDialog.showDonation(this); return true; default: return super.onOptionsItemSelected(item); } } @Override protected void onPause() { super.onPause(); HomeDialog.dismiss(mAboutDialog, mDonationDialog); } }