The evolution of Android notification

Slides from my talk at Android Makers 2017 about notifications

Transcript

1. The evolution of notifications @JeremMartinez
2. What is a notification? 1
4. “A notification is a message you can display to the user outside of your application's normal UI. […] Both the notification area and the notification drawer are system-controlled areas that the user can view at any time.” Definition
5. “A notification is a message you can display to the user outside of your application's normal UI. […] Both the notification area and the notification drawer are system-controlled areas that the user can view at any time.” Definition
6. Awareness I exist!
7. Quick access and actions!
8. History 2
12. 13:37 Content title Content text Gingerbread (2.3)
13. Content title Content text SubText 13:37 Ice Scream Sandwich (4.0)
14. Content title Content text SubText Action 13:37 Jelly Bean (4.1|2|3)
15. Content title Content text SubText Action 13:37 Kitkat (4.4)
16. Content title Content text SubText 13:37 ACTION Lollipop (5.0)
17. Content title Content text SubText 13:37 ACTION Marshmallow (6.0)
18. Content title Content text SubText ACTION 13:37 Android Makers Nougat (7.0)
19. Android
20. Content title Content text SubText ACTION 13:37 Android Makers
21. Be a good citizen 3
22. Letters Telegrams Phone calls SMS Emails Batman
23. Letters Telegrams Phone calls SMS Emails Batman [SPAM]
25. Disruptions through the day
28. Deletion of information by mistake
29. Info forgotten Bad timing
30. 1 Amount Priority Metadata Category
31. 1 Amount Priority Metadata Category
32. 1 Amount Priority Metadata Category Importance
33. Categorize 4
35. FUN PAIN
36. URGENT NON-URGENT FUN PAIN
37. URGENT NON-URGENT FUN PAIN
38. URGENT FUN
39. VIP of our life Urgent & Fun
40. URGENT NON-URGENT FUN PAIN
41. FUN NON-URGENT
42. Procrastination Non-urgent & Fun
43. URGENT NON-URGENT FUN PAIN
44. URGENT PAIN
45. Livelihood Urgent & Painful
46. URGENT NON-URGENT FUN PAIN
47. NON-URGENT PAIN
48. Nagging Non-urgent & Painful
49. 2 main principles to evaluate a notification
50. Be relevant Help yourself with context
51. Be legitimate Don’t lie about urgency
52. Use case
53. Scheduled
54. Scheduled
55. Always up to date
56. Scheduled
57. Urgent
58. Triggering 5
59. Notification notification = new NotificationCompat.Builder(this). setSmallIcon(R.drawable.ic_notification). setContentTitle("Title"). setContentText("Text"). build(); NotificationManagerCompat.from(this).notify(12345, notification);
60. Notification notification = new NotificationCompat.Builder(this). setSmallIcon(R.drawable.ic_notification). setContentTitle("Title"). setContentText("Text"). build(); NotificationManagerCompat.from(this).notify(12345, notification);
61. 1. Local events e.g. downloads, updates, posting a tweet
62. 2. Scheduled AlarmManager
63. context.getSystemService(AlarmManager.class);
64. alarmManager.setExact(type, triggerAtMillis, operation);
65. alarmManager.setExact(type, triggerAtMillis, operation);
66. if (BuildUtils.hasMarshmallow()) { alarmManager.setExactAndAllowWhileIdle(type, millis, operation); } else if (BuildUtils.hasKitKat()) { alarmManager.setExact(type, millis, operation); } else { alarmManager.set(type, millis, operation); } setExact
67. if (BuildUtils.hasMarshmallow()) { alarmManager.setExactAndAllowWhileIdle(type, millis, operation); } else if (BuildUtils.hasKitKat()) { alarmManager.setExact(type, millis, operation); } else { alarmManager.set(type, millis, operation); } setExact
68. if (BuildUtils.hasMarshmallow()) { alarmManager.setExactAndAllowWhileIdle(type, millis, operation); } else if (BuildUtils.hasKitKat()) { alarmManager.setExact(type, millis, operation); } else { alarmManager.set(type, millis, operation); } setExact
69. if (BuildUtils.hasMarshmallow()) { alarmManager.setExactAndAllowWhileIdle(type, millis, operation); } else if (BuildUtils.hasKitKat()) { alarmManager.setExact(type, millis, operation); } else { alarmManager.set(type, millis, operation); } setExact
70. alarmManager.setExact(type, triggerAtMillis, operation);
71. alarmManager.setExact( , triggerAtMillis, operation); type
72. type AlarmManager.RTC System.currentTimeMillis() AlarmManager.RTC_WAKEUP | time since boot including sleep
73. type AlarmManager.ELAPSED_REALTIME SystemClock.elapsedRealtime() AlarmManager.ELAPSED_REALTIME_WAKEUP | wall clock time in UTC
74. alarmManager.setExact( , triggerAtMillis, operation); type
75. alarmManager.setExact( , , operation); type triggerAtMillis
76. alarmManager.setExact( , , ); type triggerAtMillis operation
77. operation public static PendingIntent getBroadcast( … ) public static PendingIntent getActivity( … ) public static PendingIntent getService( … ) PendingIntent
78. Is it that simple ?
79. PendingIntent.getActivity( context, 123, intent, FLAG_UPDATE_CURRENT); final Intent intent = new Intent(this, MainActivity.class); PendingIntent.getActivity( context, 123, intent, FLAG_UPDATE_CURRENT); = ?
80. PendingIntent.getActivity( context, 123, intent, FLAG_UPDATE_CURRENT); final Intent intent = new Intent(this, MainActivity.class); PendingIntent.getActivity( context, 123, intent, FLAG_UPDATE_CURRENT);
81. PendingIntent.getActivity( context, 1234, intent, FLAG_UPDATE_CURRENT); final Intent intent = new Intent(this, MainActivity.class); PendingIntent.getActivity( context, 1235, intent, FLAG_UPDATE_CURRENT); = ?
82. PendingIntent.getActivity( context, 1234, intent, FLAG_UPDATE_CURRENT); final Intent intent = new Intent(this, MainActivity.class); PendingIntent.getActivity( context, 1235, intent, FLAG_UPDATE_CURRENT);
83. PendingIntent.getActivity( context, 123, intent1, FLAG_UPDATE_CURRENT); final Intent intent1 = new Intent(this, MainActivity.class); PendingIntent.getActivity( context, 123, intent2, FLAG_UPDATE_CURRENT); = ? final Intent intent2 = new Intent(this, MainActivity.class);
84. PendingIntent.getActivity( context, 123, intent1, FLAG_UPDATE_CURRENT); PendingIntent.getActivity( context, 123, intent2, FLAG_UPDATE_CURRENT); final Intent intent1 = new Intent(this, MainActivity.class); final Intent intent2 = new Intent(this, MainActivity.class);
85. PendingIntent.getActivity( context, 123, intent1, FLAG_UPDATE_CURRENT); final Intent intent1 = new Intent(this, MainActivity.class). putExtra("extra1", "extra1"); PendingIntent.getActivity( context, 123, intent2, FLAG_UPDATE_CURRENT); = ? final Intent intent2 = new Intent(this, MainActivity.class). putExtra(“extra2", "extra2");
86. PendingIntent.getActivity( context, 123, intent1, FLAG_UPDATE_CURRENT); final Intent intent1 = new Intent(this, MainActivity.class). putExtra("extra1", "extra1"); PendingIntent.getActivity( context, 123, intent2, FLAG_UPDATE_CURRENT); final Intent intent2 = new Intent(this, MainActivity.class). putExtra(“extra2", "extra2");
87. PendingIntent.getActivity( context, 123, intent1, FLAG_UPDATE_CURRENT); final Intent intent1 = new Intent(this, MainActivity.class). addCategory(Intent.CATEGORY_APP_BROWSER); PendingIntent.getActivity( context, 123, intent2, FLAG_UPDATE_CURRENT); = ? final Intent intent2 = new Intent(this, MainActivity.class). addCategory(Intent.CATEGORY_APP_CALCULATOR);
88. PendingIntent.getActivity( context, 123, intent1, FLAG_UPDATE_CURRENT); final Intent intent1 = new Intent(this, MainActivity.class). addCategory(Intent.CATEGORY_APP_BROWSER); PendingIntent.getActivity( context, 123, intent2, FLAG_UPDATE_CURRENT); final Intent intent2 = new Intent(this, MainActivity.class). addCategory(Intent.CATEGORY_APP_CALCULATOR);
89. public boolean filterEquals(Intent other) { if (other == null) { return false; } if (!Objects.equals(this.mAction, other.mAction)) return false; if (!Objects.equals(this.mData, other.mData)) return false; if (!Objects.equals(this.mType, other.mType)) return false; if (!Objects.equals(this.mPackage, other.mPackage)) return false; if (!Objects.equals(this.mComponent, other.mComponent)) return false; if (!Objects.equals(this.mCategories, other.mCategories)) return false; return true; }
90. - Survive app upgrade - Survive reboot How long ? Be future proof !
91. 3. Realtime Push notifications: GCM & Firebase
92. - Use extensively group - Be careful about marketing abuse - Don’t forget to remove notifications
93. Snooze
94. Time-out
95. Styling 6
96. BigPictureStyle BigTextStyle InboxStyle MediaStyle MessagingStyle Notification.Style
97. Default
98. BigText
99. BigPicture
100. Media
101. Notification.Style DecoratedCustomViewStyle
102. RemoteViews Run in another process
104. Avoid RemoteViews Prefer default styling or span
105. Spanned everything! Very powerful API — Available everywhere
107. SpannableString delayedSpanned = new SpannableString(delayed); delayedSpanned.setSpan(new StrikethroughSpan(), // 0, delayedSpanned.length(), // Spanned.SPAN_INCLUSIVE_INCLUSIVE); delayedSpanned.setSpan(new ForegroundColorSpan(textColor), // 0, delayedSpanned.length(), // Spanned.SPAN_INCLUSIVE_INCLUSIVE);
108. SpannableString delayedSpanned = new SpannableString(delayed); delayedSpanned.setSpan(new StrikethroughSpan(), // 0, delayedSpanned.length(), // Spanned.SPAN_INCLUSIVE_INCLUSIVE); delayedSpanned.setSpan(new ForegroundColorSpan(textColor), // 0, delayedSpanned.length(), // Spanned.SPAN_INCLUSIVE_INCLUSIVE);
109. SpannableString delayedSpanned = new SpannableString(delayed); delayedSpanned.setSpan(new StrikethroughSpan(), // 0, delayedSpanned.length(), // Spanned.SPAN_INCLUSIVE_INCLUSIVE); delayedSpanned.setSpan(new ForegroundColorSpan(textColor), // 0, delayedSpanned.length(), // Spanned.SPAN_INCLUSIVE_INCLUSIVE);
110. delayedSpanned.setSpan(new ForegroundColorSpan(textColor), // 0, delayedSpanned.length(), // Spanned.SPAN_INCLUSIVE_INCLUSIVE); SpannableString delayedSpanned = new SpannableString(delayed); delayedSpanned.setSpan(new StrikethroughSpan(), // 0, delayedSpanned.length(), // Spanned.SPAN_INCLUSIVE_INCLUSIVE); textView.setText(getString(R.string.travelTextWithDelay, // time, // delayedSpanned));
111. delayedSpanned.setSpan(new ForegroundColorSpan(textColor), // 0, delayedSpanned.length(), // Spanned.SPAN_INCLUSIVE_INCLUSIVE); SpannableString delayedSpanned = new SpannableString(delayed); delayedSpanned.setSpan(new StrikethroughSpan(), // 0, delayedSpanned.length(), // Spanned.SPAN_INCLUSIVE_INCLUSIVE); textView.setText(getString(R.string.travelTextWithDelay, // time, // delayedSpanned));
112. delayedSpanned.setSpan(new ForegroundColorSpan(textColor), // 0, delayedSpanned.length(), // Spanned.SPAN_INCLUSIVE_INCLUSIVE); SpannableString delayedSpanned = new SpannableString(delayed); delayedSpanned.setSpan(new StrikethroughSpan(), // 0, delayedSpanned.length(), // Spanned.SPAN_INCLUSIVE_INCLUSIVE); textView.setText(TagFormatter.from(this, R.string.travelTextWithDelay). with("arrival_time", time). with("estimated_arrival_time", delayedSpanned). format()); textView.setText(getString(R.string.travelTextWithDelay, // time, // delayedSpanned));
113. Other tips 7
114. Transient Be able to find the same info elsewhere in the app
115. Be patient Wait for the content
116. Clean up Delete outdated notification
118. Think VIP Help Android to order
120. Think multi-devices Synchronize notifications
121. Conclusion 8 @JeremMartinez