com.google.android.gms.location.sample.locationupdatespendingintent.Utils.java Source code

Introduction

Here is the source code for com.google.android.gms.location.sample.locationupdatespendingintent.Utils.java

Source

/**
 * Copyright 2017 Google Inc. All Rights Reserved.
 *
 * 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 com.google.android.gms.location.sample.locationupdatespendingintent;

import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.location.Location;
import android.preference.PreferenceManager;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.TaskStackBuilder;

import java.text.DateFormat;
import java.util.Date;
import java.util.List;

/**
 * Utility methods used in this sample.
 */
class Utils {

    final static String KEY_LOCATION_UPDATES_REQUESTED = "location-updates-requested";
    final static String KEY_LOCATION_UPDATES_RESULT = "location-update-result";

    static void setRequestingLocationUpdates(Context context, boolean value) {
        PreferenceManager.getDefaultSharedPreferences(context).edit()
                .putBoolean(KEY_LOCATION_UPDATES_REQUESTED, value).apply();
    }

    static boolean getRequestingLocationUpdates(Context context) {
        return PreferenceManager.getDefaultSharedPreferences(context).getBoolean(KEY_LOCATION_UPDATES_REQUESTED,
                false);
    }

    /**
     * Posts a notification in the notification bar when a transition is detected.
     * If the user clicks the notification, control goes to the MainActivity.
     */
    static void sendNotification(Context context, String notificationDetails) {
        // Create an explicit content Intent that starts the main Activity.
        Intent notificationIntent = new Intent(context, MainActivity.class);

        notificationIntent.putExtra("from_notification", true);

        // Construct a task stack.
        TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);

        // Add the main Activity to the task stack as the parent.
        stackBuilder.addParentStack(MainActivity.class);

        // Push the content Intent onto the stack.
        stackBuilder.addNextIntent(notificationIntent);

        // Get a PendingIntent containing the entire back stack.
        PendingIntent notificationPendingIntent = stackBuilder.getPendingIntent(0,
                PendingIntent.FLAG_UPDATE_CURRENT);

        // Get a notification builder that's compatible with platform versions >= 4
        NotificationCompat.Builder builder = new NotificationCompat.Builder(context);

        // Define the notification settings.
        builder.setSmallIcon(R.mipmap.ic_launcher)
                // In a real app, you may want to use a library like Volley
                // to decode the Bitmap.
                .setLargeIcon(BitmapFactory.decodeResource(context.getResources(), R.mipmap.ic_launcher))
                .setColor(Color.RED).setContentTitle("Location update").setContentText(notificationDetails)
                .setContentIntent(notificationPendingIntent);

        // Dismiss notification once the user touches it.
        builder.setAutoCancel(true);

        // Get an instance of the Notification manager
        NotificationManager mNotificationManager = (NotificationManager) context
                .getSystemService(Context.NOTIFICATION_SERVICE);

        // Issue the notification
        mNotificationManager.notify(0, builder.build());
    }

    /**
     * Returns the title for reporting about a list of {@link Location} objects.
     *
     * @param context The {@link Context}.
     */
    static String getLocationResultTitle(Context context, List<Location> locations) {
        String numLocationsReported = context.getResources().getQuantityString(R.plurals.num_locations_reported,
                locations.size(), locations.size());
        return numLocationsReported + ": " + DateFormat.getDateTimeInstance().format(new Date());
    }

    /**
     * Returns te text for reporting about a list of  {@link Location} objects.
     *
     * @param locations List of {@link Location}s.
     */
    private static String getLocationResultText(Context context, List<Location> locations) {
        if (locations.isEmpty()) {
            return context.getString(R.string.unknown_location);
        }
        StringBuilder sb = new StringBuilder();
        for (Location location : locations) {
            sb.append("(");
            sb.append(location.getLatitude());
            sb.append(", ");
            sb.append(location.getLongitude());
            sb.append(")");
            sb.append("\n");
        }
        return sb.toString();
    }

    static void setLocationUpdatesResult(Context context, List<Location> locations) {
        PreferenceManager.getDefaultSharedPreferences(context).edit().putString(KEY_LOCATION_UPDATES_RESULT,
                getLocationResultTitle(context, locations) + "\n" + getLocationResultText(context, locations))
                .apply();
    }

    static String getLocationUpdatesResult(Context context) {
        return PreferenceManager.getDefaultSharedPreferences(context).getString(KEY_LOCATION_UPDATES_RESULT, "");
    }
}