1 package com.example.android.activenotifications; 2 /* 3 * Copyright 2015 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 import android.app.Notification; 19 import android.app.NotificationManager; 20 import android.app.PendingIntent; 21 import android.content.Context; 22 import android.content.Intent; 23 import android.os.Bundle; 24 import android.service.notification.StatusBarNotification; 25 import android.support.v4.app.Fragment; 26 import android.view.LayoutInflater; 27 import android.view.View; 28 import android.view.ViewGroup; 29 import android.widget.TextView; 30 31 import com.example.android.common.logger.Log; 32 33 /** 34 * A fragment that enables display of notifications. 35 */ 36 public class ActiveNotificationFragment extends Fragment { 37 38 private static final String TAG = "ActiveNotificationFragment"; 39 40 private NotificationManager mNotificationManager; 41 private TextView mNumberOfNotifications; 42 43 // Every notification needs a unique ID otherwise the previous one would be overwritten. 44 private int mNotificationId = 0; 45 private PendingIntent mDeletePendingIntent; 46 47 @Override onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)48 public View onCreateView(LayoutInflater inflater, ViewGroup container, 49 Bundle savedInstanceState) { 50 return inflater.inflate(R.layout.fragment_notification_builder, container, false); 51 } 52 53 @Override onResume()54 public void onResume() { 55 super.onResume(); 56 updateNumberOfNotifications(); 57 } 58 59 @Override onViewCreated(View view, Bundle savedInstanceState)60 public void onViewCreated(View view, Bundle savedInstanceState) { 61 super.onViewCreated(view, savedInstanceState); 62 mNotificationManager = (NotificationManager) getActivity().getSystemService( 63 Context.NOTIFICATION_SERVICE); 64 mNumberOfNotifications = (TextView) view.findViewById(R.id.number_of_notifications); 65 66 // Supply actions to the button that is displayed on screen. 67 View.OnClickListener onClickListener = new View.OnClickListener() { 68 @Override 69 public void onClick(View v) { 70 switch (v.getId()) { 71 case R.id.add_notification: { 72 addNotificationAndReadNumber(); 73 break; 74 } 75 } 76 } 77 }; 78 view.findViewById(R.id.add_notification).setOnClickListener(onClickListener); 79 80 // [BEGIN create_pending_intent_for_deletion] 81 // Create a PendingIntent to be fired upon deletion of a Notification. 82 Intent deleteIntent = new Intent(ActiveNotificationActivity.ACTION_NOTIFICATION_DELETE); 83 mDeletePendingIntent = PendingIntent.getBroadcast(getActivity(), 84 2323 /* requestCode */, deleteIntent, 0); 85 // [END create_pending_intent_for_deletion] 86 } 87 88 /** 89 * Add a new {@link Notification} with sample data and send it to the system. 90 * Then read the current number of displayed notifications for this application. 91 */ addNotificationAndReadNumber()92 private void addNotificationAndReadNumber() { 93 // [BEGIN create_notification] 94 // Create a Notification and notify the system. 95 final Notification.Builder builder = new Notification.Builder(getActivity()) 96 .setSmallIcon(R.mipmap.ic_notification) 97 .setContentTitle(getString(R.string.app_name)) 98 .setContentText(getString(R.string.sample_notification_content)) 99 .setAutoCancel(true) 100 .setDeleteIntent(mDeletePendingIntent); 101 102 final Notification notification = builder.build(); 103 mNotificationManager.notify(++mNotificationId, notification); 104 // [END create_notification] 105 Log.i(TAG, "Add a notification"); 106 updateNumberOfNotifications(); 107 } 108 109 /** 110 * Request the current number of notifications from the {@link NotificationManager} and 111 * display them to the user. 112 */ updateNumberOfNotifications()113 protected void updateNumberOfNotifications() { 114 // [BEGIN get_active_notifications] 115 // Query the currently displayed notifications. 116 final StatusBarNotification[] activeNotifications = mNotificationManager 117 .getActiveNotifications(); 118 // [END get_active_notifications] 119 final int numberOfNotifications = activeNotifications.length; 120 mNumberOfNotifications.setText(getString(R.string.active_notifications, 121 numberOfNotifications)); 122 Log.i(TAG, getString(R.string.active_notifications, numberOfNotifications)); 123 } 124 } 125