network-monitor-master/networkmonitor/src/main/java/ca/rmen/android/networkmonitor/util/PermissionUtil.java
/*
 * This source is part of the
 *      _____  ___   ____
 *  __ / / _ \/ _ | / __/___  _______ _
 * / // / , _/ __ |/ _/_/ _ \/ __/ _ `/
 * \___/_/|_/_/ |_/_/ (_)___/_/  \_, /
 *                              /___/
 * repository.
 *
 * Copyright (C) 2016-2020 Carmen Alvarez (c@rmen.ca)
 *
 * 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 ca.rmen.android.networkmonitor.util;

import android.Manifest;
import android.annotation.TargetApi;
import android.app.AppOpsManager;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.Build;

import androidx.core.app.ActivityCompat;

public class PermissionUtil {

    private PermissionUtil() {
        // prevent instantiation
    }

    private static boolean isPermissionGranted(Context context, String permission) {
        return ActivityCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_GRANTED;
    }

    public static boolean hasReadPhoneStatePermission(Context context) {
        return isPermissionGranted(context, Manifest.permission.READ_PHONE_STATE);
    }

    @TargetApi(Build.VERSION_CODES.M)
    public static boolean hasUsageStatsPermission(Context context) {
        AppOpsManager appOps = (AppOpsManager)
                context.getSystemService(Context.APP_OPS_SERVICE);
        if (appOps == null) return false;
        int mode = appOps.checkOpNoThrow(AppOpsManager.OPSTR_GET_USAGE_STATS,
                android.os.Process.myUid(), context.getPackageName());
        return mode == AppOpsManager.MODE_ALLOWED;
    }

    public static boolean areAllGranted(int[] grantResults) {
        for (int grantResult : grantResults) {
            if (grantResult != PackageManager.PERMISSION_GRANTED) {
                return false;
            }
        }
        return true;
    }

}
