PermissionsHelper.java

/*
 * Copyright (c) 2015. Jonas Kalderstam
 *
 * 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.nononsenseapps.notepad.util;

import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.support.annotation.NonNull;
import android.support.v4.content.ContextCompat;

/**
 * Helper class which handles runtime permissions.
 */
public class PermissionsHelper {

    public static final String[] PERMISSIONS_GTASKS = new String[]{Manifest.permission.GET_ACCOUNTS,
            Manifest.permission.WRITE_SYNC_SETTINGS, Manifest.permission.READ_SYNC_SETTINGS,
            Manifest.permission.READ_SYNC_STATS, Manifest.permission.INTERNET};

    public static final String[] PERMISSIONS_SD =
            new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE};

    public static boolean hasPermissions(@NonNull Context context, String... permissions) {
        for (String permission : permissions) {
            if (!hasPermission(context, permission)) {
                return false;
            }
        }
        return true;
    }

    public static boolean hasPermission(@NonNull Context context, @NonNull String permission) {
        return PackageManager.PERMISSION_GRANTED == ContextCompat.checkSelfPermission(context, permission);
    }

    /**
     *
     * @param permissions that were requested
     * @param grantResults of the request
     * @return true if all results were granted, false otherwise
     */
    public static boolean permissionsGranted(@NonNull String[] permissions,
            @NonNull int[] grantResults) {
        return permissions.length > 0 && allEqual(PackageManager.PERMISSION_GRANTED, grantResults);
    }

    public static boolean allEqual(int value, int[] items) {
        for (int item: items) {
            if (value != item) {
                return false;
            }
        }
        return true;
    }
}