Java tutorial
/* * Copyright 2014 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.samples.apps.sergio.gcm.command; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.Context; import android.content.Intent; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.net.Uri; import android.support.v4.app.NotificationCompat; import android.text.TextUtils; import com.google.samples.apps.sergio.R; import com.google.samples.apps.sergio.gcm.GCMCommand; import com.google.samples.apps.sergio.ui.MyScheduleActivity; import com.google.samples.apps.sergio.util.PrefUtils; import com.google.samples.apps.sergio.util.TimeUtils; import com.google.samples.apps.sergio.util.UIUtils; import com.google.gson.Gson; import java.util.Date; import static com.google.samples.apps.sergio.util.LogUtils.*; public class NotificationCommand extends GCMCommand { private static final String TAG = makeLogTag("NotificationCommand"); private static class NotificationCommandModel { String format; String audience; String minVersion; String maxVersion; String title; String message; String expiry; String dialogTitle; String dialogText; String dialogYes; String dialogNo; String url; } @Override public void execute(Context context, String type, String payload) { LOGI(TAG, "Received GCM message: " + type); LOGI(TAG, "Parsing GCM notification command: " + payload); Gson gson = new Gson(); NotificationCommandModel command; try { command = gson.fromJson(payload, NotificationCommandModel.class); if (command == null) { LOGE(TAG, "Failed to parse command (gson returned null)."); return; } LOGD(TAG, "Format: " + command.format); LOGD(TAG, "Audience: " + command.audience); LOGD(TAG, "Title: " + command.title); LOGD(TAG, "Message: " + command.message); LOGD(TAG, "Expiry: " + command.expiry); LOGD(TAG, "URL: " + command.url); LOGD(TAG, "Dialog title: " + command.dialogTitle); LOGD(TAG, "Dialog text: " + command.dialogText); LOGD(TAG, "Dialog yes: " + command.dialogYes); LOGD(TAG, "Dialog no: " + command.dialogNo); LOGD(TAG, "Min version code: " + command.minVersion); LOGD(TAG, "Max version code: " + command.maxVersion); } catch (Exception ex) { ex.printStackTrace(); LOGE(TAG, "Failed to parse GCM notification command."); return; } LOGD(TAG, "Processing notification command."); processCommand(context, command); } private void processCommand(Context context, NotificationCommandModel command) { // Check format if (!"1.0.00".equals(command.format)) { LOGW(TAG, "GCM notification command has unrecognized format: " + command.format); return; } // Check app version if (!TextUtils.isEmpty(command.minVersion) || !TextUtils.isEmpty(command.maxVersion)) { LOGD(TAG, "Command has version range."); int minVersion = 0; int maxVersion = Integer.MAX_VALUE; try { if (!TextUtils.isEmpty(command.minVersion)) { minVersion = Integer.parseInt(command.minVersion); } if (!TextUtils.isEmpty(command.maxVersion)) { maxVersion = Integer.parseInt(command.maxVersion); } LOGD(TAG, "Version range: " + minVersion + " - " + maxVersion); PackageInfo pinfo = context.getPackageManager().getPackageInfo(context.getPackageName(), 0); LOGD(TAG, "My version code: " + pinfo.versionCode); if (pinfo.versionCode < minVersion) { LOGD(TAG, "Skipping command because our version is too old, " + pinfo.versionCode + " < " + minVersion); return; } if (pinfo.versionCode > maxVersion) { LOGD(TAG, "Skipping command because our version is too new, " + pinfo.versionCode + " > " + maxVersion); return; } } catch (NumberFormatException ex) { LOGE(TAG, "Version spec badly formatted: min=" + command.minVersion + ", max=" + command.maxVersion); return; } catch (Exception ex) { LOGE(TAG, "Unexpected problem doing version check.", ex); return; } } // Check if we are the right audience LOGD(TAG, "Checking audience: " + command.audience); if ("remote".equals(command.audience)) { if (PrefUtils.isAttendeeAtVenue(context)) { LOGD(TAG, "Ignoring notification because audience is remote and attendee is on-site"); return; } else { LOGD(TAG, "Relevant (attendee is remote)."); } } else if ("local".equals(command.audience)) { if (!PrefUtils.isAttendeeAtVenue(context)) { LOGD(TAG, "Ignoring notification because audience is on-site and attendee is remote."); return; } else { LOGD(TAG, "Relevant (attendee is local)."); } } else if ("all".equals(command.audience)) { LOGD(TAG, "Relevant (audience is 'all')."); } else { LOGE(TAG, "Invalid audience on GCM notification command: " + command.audience); return; } // Check if it expired Date expiry = command.expiry == null ? null : TimeUtils.parseTimestamp(command.expiry); if (expiry == null) { LOGW(TAG, "Failed to parse expiry field of GCM notification command: " + command.expiry); return; } else if (expiry.getTime() < UIUtils.getCurrentTime(context)) { LOGW(TAG, "Got expired GCM notification command. Expiry: " + expiry.toString()); return; } else { LOGD(TAG, "Message is still valid (expiry is in the future: " + expiry.toString() + ")"); } // decide the intent that will be fired when the user clicks the notification Intent intent; if (TextUtils.isEmpty(command.dialogText)) { // notification leads directly to the URL, no dialog if (TextUtils.isEmpty(command.url)) { intent = new Intent(context, MyScheduleActivity.class) .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP); } else { intent = new Intent(Intent.ACTION_VIEW, Uri.parse(command.url)); } } else { // use a dialog intent = new Intent(context, MyScheduleActivity.class) .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK); intent.putExtra(MyScheduleActivity.EXTRA_DIALOG_TITLE, command.dialogTitle == null ? "" : command.dialogTitle); intent.putExtra(MyScheduleActivity.EXTRA_DIALOG_MESSAGE, command.dialogText == null ? "" : command.dialogText); intent.putExtra(MyScheduleActivity.EXTRA_DIALOG_YES, command.dialogYes == null ? "OK" : command.dialogYes); intent.putExtra(MyScheduleActivity.EXTRA_DIALOG_NO, command.dialogNo == null ? "" : command.dialogNo); intent.putExtra(MyScheduleActivity.EXTRA_DIALOG_URL, command.url == null ? "" : command.url); } final String title = TextUtils.isEmpty(command.title) ? context.getString(R.string.app_name) : command.title; final String message = TextUtils.isEmpty(command.message) ? "" : command.message; // fire the notification ((NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE)).notify(0, new NotificationCompat.Builder(context).setWhen(System.currentTimeMillis()) .setSmallIcon(R.drawable.ic_stat_notification).setTicker(command.message) .setContentTitle(title).setContentText(message) //.setColor(context.getResources().getColor(R.color.theme_primary)) // Note: setColor() is available in the support lib v21+. // We commented it out because we want the source to compile // against support lib v20. If you are using support lib // v21 or above on Android L, uncomment this line. .setContentIntent( PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT)) .setAutoCancel(true).build()); } }