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PackageMonitorReceiver.java

package com.afwsamples.testdpc;

import android.app.Notification;
import android.app.NotificationManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.support.v7.app.NotificationCompat;
import android.support.v7.app.NotificationCompat.Builder;
import android.text.TextUtils;

import com.afwsamples.testdpc.common.NotificationUtil;

public class PackageMonitorReceiver extends BroadcastReceiver {
    private static final String TAG = "PackageMonitorReceiver";
    private static final int PACKAGE_CHANGED_NOTIIFICATION_ID = 34857;

@Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if (!Intent.ACTION_PACKAGE_ADDED.equals(action)
                && !Intent.ACTION_PACKAGE_REMOVED.equals(action)) {
            return;
        }
        String packageName = getPackageNameFromIntent(intent);
        if (TextUtils.isEmpty(packageName)) {
            return;
        }
        boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
        if (replacing) {
            return;
        }
        String notificationBody = buildNotificationText(context, packageName, action);
        Notification notification = NotificationUtil.getNotificationBuilder(context)
            .setSmallIcon(R.drawable.ic_launcher)
            .setContentTitle(context.getString(R.string.package_changed_notification_title))
            .setContentText(notificationBody)
            .setStyle(new NotificationCompat.BigTextStyle().bigText(notificationBody))
            .setDefaults(Notification.DEFAULT_LIGHTS)
            .build();
        NotificationManager notificationManager =
            (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.notify(PACKAGE_CHANGED_NOTIIFICATION_ID, notification);
    }

private String getPackageNameFromIntent(Intent intent) {
        if (intent.getData() == null) {
            return null;
        }
        return intent.getData().getSchemeSpecificPart();
    }

private String buildNotificationText(Context context, String pkgName, String action) {
        int res = Intent.ACTION_PACKAGE_ADDED.equals(action)
                ? R.string.package_added_notification_text
                : R.string.package_removed_notification_text;
        return context.getString(res, pkgName);
    }
}