Java tutorial
package com.maxwen.wallpaper.board.fragments; import android.content.res.Configuration; import android.os.Bundle; import android.os.Environment; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.support.v4.view.ViewCompat; import android.support.v7.widget.DefaultItemAnimator; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import com.maxwen.wallpaper.R; import com.maxwen.wallpaper.board.activities.WallpaperBoardActivity; import com.maxwen.wallpaper.board.adapters.SettingsAdapter; import com.maxwen.wallpaper.board.helpers.FileHelper; import com.maxwen.wallpaper.board.helpers.ViewHelper; import com.maxwen.wallpaper.board.items.Setting; import com.maxwen.wallpaper.board.preferences.Preferences; import java.io.File; import java.text.DecimalFormat; import java.text.NumberFormat; import java.util.ArrayList; import java.util.List; import butterknife.BindView; import butterknife.ButterKnife; /* * Wallpaper Board * * Copyright (c) 2017 Dani Mahardhika * * 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. */ public class SettingsFragment extends Fragment { @BindView(R.id.recyclerview) RecyclerView mRecyclerView; private SettingsAdapter mAdapter; @Nullable @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_settings, container, false); ButterKnife.bind(this, view); return view; } @Override public void onActivityCreated(@Nullable Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); ViewCompat.setNestedScrollingEnabled(mRecyclerView, false); ViewHelper.resetViewBottomPadding(mRecyclerView, ((WallpaperBoardActivity) getActivity()).getNavBarHeight(), true); mRecyclerView.setItemAnimator(new DefaultItemAnimator()); mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); initSettings(); } @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); ViewHelper.resetViewBottomPadding(mRecyclerView, ((WallpaperBoardActivity) getActivity()).getNavBarHeight(), true); } private void initSettings() { List<Setting> settings = new ArrayList<>(); double cache = (double) FileHelper.getCacheSize(getActivity().getCacheDir()) / FileHelper.MB; NumberFormat formatter = new DecimalFormat("#0.00"); settings.add(new Setting(R.drawable.ic_toolbar_storage, getActivity().getResources().getString(R.string.pref_data_header), "", "", "", Setting.Type.HEADER, -1)); settings.add(new Setting(-1, "", getActivity().getResources().getString(R.string.pref_data_cache), getActivity().getResources().getString(R.string.pref_data_cache_desc), String.format(getActivity().getResources().getString(R.string.pref_data_cache_size), formatter.format(cache) + " MB"), Setting.Type.CACHE, -1)); settings.add(new Setting(R.drawable.ic_toolbar_theme, getActivity().getResources().getString(R.string.pref_theme_header), "", "", "", Setting.Type.HEADER, -1)); settings.add(new Setting(-1, "", getActivity().getResources().getString(R.string.pref_theme_dark), getActivity().getResources().getString(R.string.pref_theme_dark_desc), "", Setting.Type.THEME, Preferences.getPreferences(getActivity()).isDarkTheme() ? 1 : 0)); settings.add(new Setting(R.drawable.ic_toolbar_wallpapers, getActivity().getResources().getString(R.string.pref_wallpaper_header), "", "", "", Setting.Type.HEADER, -1)); String directory = ""; if (Preferences.getPreferences(getActivity()).getWallsDirectory() == null) { directory = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + "/" + getActivity().getResources().getString(R.string.app_name)).getAbsolutePath(); } else { directory = Preferences.getPreferences(getActivity()).getWallsDirectory() + File.separator; } settings.add(new Setting(-1, "", getActivity().getResources().getString(R.string.pref_wallpaper_location), directory, "", Setting.Type.WALLPAPER, -1)); settings.add(new Setting(-1, "", getActivity().getResources().getString(R.string.wallpaper_scroll_enable), getActivity().getResources().getString(R.string.wallpaper_scroll_enable_desc), "", Setting.Type.SCROLL, Preferences.getPreferences(getActivity()).isScrollWallpaper() ? 1 : 0)); mAdapter = new SettingsAdapter(getActivity(), this, settings); mRecyclerView.setAdapter(mAdapter); } public void refresh() { initSettings(); } }