Java tutorial
/* Copyright (C) 2014 Masood Fallahpoor This file is part of Info Center. Info Center is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. Info Center is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Info Center. If not, see <http://www.gnu.org/licenses/>. */ package com.fallahpoor.infocenter.fragments; import android.graphics.Point; import android.os.Bundle; import android.support.v4.app.Fragment; import android.util.DisplayMetrics; import android.view.Display; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ListView; import com.fallahpoor.infocenter.R; import com.fallahpoor.infocenter.Utils; import com.fallahpoor.infocenter.adapters.CustomArrayAdapter; import com.fallahpoor.infocenter.adapters.ListItem; import com.fallahpoor.infocenter.adapters.OrdinaryListItem; import java.util.ArrayList; import java.util.Arrays; /** * ScreenFragment shows some information about the screen of the device * including its resolution, DPI and so on. * * @author Masood Fallahpoor */ public class ScreenFragment extends Fragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { super.onCreateView(inflater, container, savedInstanceState); View view = inflater.inflate(R.layout.fragment_others, container, false); ListView listView = (ListView) view.findViewById(R.id.listView); listView.setAdapter(new CustomArrayAdapter(getActivity(), getListItems())); return view; } private ArrayList<ListItem> getListItems() { ArrayList<ListItem> listItems = new ArrayList<>(); ArrayList<String> itemsArrayList = getItemsArrayList(); ArrayList<String> subItemsArrayList = getSubItemsArrayList(); for (int i = 0; i < itemsArrayList.size(); i++) { listItems.add(new OrdinaryListItem(itemsArrayList.get(i), subItemsArrayList.get(i))); } return listItems; } private ArrayList<String> getItemsArrayList() { return new ArrayList<>(Arrays.asList( new String[] { getString(R.string.scr_item_resolution), getString(R.string.scr_item_orientation), getString(R.string.scr_item_refresh_rate), getString(R.string.scr_item_dots_per_inch), getString(R.string.scr_item_horizontal_dpi), getString(R.string.scr_item_vertical_dpi), })); } private ArrayList<String> getSubItemsArrayList() { ArrayList<String> subItems = new ArrayList<>(); Point displaySize = new Point(); DisplayMetrics displayMetrics = new DisplayMetrics(); Display display = getActivity().getWindowManager().getDefaultDisplay(); display.getSize(displaySize); display.getMetrics(displayMetrics); subItems.add(getDisplaySize(displaySize)); subItems.add(getOrientation(displaySize)); subItems.add(getRefreshRate(display)); subItems.add(getDpi(displayMetrics)); subItems.add(getHorizontalDpi(displayMetrics)); subItems.add(getVerticalDpi(displayMetrics)); return subItems; } private String getDisplaySize(Point displaySize) { return String.format(Utils.getLocale(), "%d x %d", displaySize.x, displaySize.y); } private String getOrientation(Point displaySize) { if (displaySize.x == displaySize.y) { return getString(R.string.scr_sub_item_square); } else if (displaySize.x < displaySize.y) { return getString(R.string.scr_sub_item_portrait); } else { return getString(R.string.scr_sub_item_landscape); } } private String getRefreshRate(Display display) { return String.format(Utils.getLocale(), "%.0f %s", display.getRefreshRate(), getString(R.string.scr_sub_item_hertz)); } private String getDpi(DisplayMetrics displayMetrics) { return String.format(Utils.getLocale(), "%d", displayMetrics.densityDpi); } private String getHorizontalDpi(DisplayMetrics displayMetrics) { return String.format(Utils.getLocale(), "%.0f", displayMetrics.xdpi); } private String getVerticalDpi(DisplayMetrics displayMetrics) { return String.format(Utils.getLocale(), "%.0f", displayMetrics.ydpi); } } // end class ScreenFragment