com.nadmm.airports.utils.SystemUtils.java Source code

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Here is the source code for com.nadmm.airports.utils.SystemUtils.java

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/*
 * FlightIntel for Pilots
 *
 * Copyright 2012 Nadeem Hasan <nhasan@nadmm.com>
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.nadmm.airports.utils;

import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.os.Environment;
import android.support.v4.content.ContextCompat;

import java.io.File;
import java.util.List;

public class SystemUtils {

    private final static String MIME_TYPE_PDF = "application/pdf";

    public static boolean canDisplayMimeType(Context context, String mimeType) {
        PackageManager pm = context.getPackageManager();
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setType(mimeType);
        List<ResolveInfo> list = pm.queryIntentActivities(intent, PackageManager.MATCH_ALL);
        return !list.isEmpty();
    }

    public static boolean isExternalStorageAvailable() {
        String state = Environment.getExternalStorageState();
        return Environment.MEDIA_MOUNTED.equals(state);
    }

    public static void startPDFViewer(Context context, String path) {
        if (SystemUtils.canDisplayMimeType(context, MIME_TYPE_PDF)) {
            // Fire an intent to view the PDF chart
            Intent viewChart = new Intent(Intent.ACTION_VIEW);
            Uri pdf = Uri.fromFile(new File(path));
            viewChart.setDataAndType(pdf, MIME_TYPE_PDF);
            context.startActivity(viewChart);
        } else {
            // No PDF viewer is installed, send user to Play Store
            UiUtils.showToast(context, "Please install a PDF viewer app first");
            Intent market = new Intent(Intent.ACTION_VIEW);
            Uri uri = Uri.parse("market://details?id=com.google.android.apps.pdfviewer");
            market.setData(uri);
            context.startActivity(market);
        }
    }

    public static File getExternalDir(Context context, String dirName) {
        return ContextCompat.getExternalFilesDirs(context, dirName)[0];
    }

    public static File getExternalFile(Context context, String dirName, String fileName) {
        File dir = SystemUtils.getExternalDir(context, dirName);
        return new File(dir, fileName);
    }

}