Share
Embed
Slide 1
Slide 1 text
What’s new in Android 10
A developer’s preview
Slide 2
Slide 2 text
About Me
Engineering Lead,
Mobile Platform Team
Zomato
Co-Founder & Mentor
Coding Blocks
Slide 3
Slide 3 text
Android 10
September 3, 2019
First numerical Android release,
without any desert names.
Originally called Android Q
Slide 4
Slide 4 text
Highlights
for users
Slide 5
Slide 5 text
Smart Reply
Auto suggestions to
reply to texting apps,
powered by the engine
that supports smart
suggestions on Gmail
Slide 6
Slide 6 text
Sound
Amplifier
Native support for in-
built amplifier and
equaliser.
Slide 7
Slide 7 text
Gesture
Navigation
New gestures to go
home and to go back
with smooth animations
Slide 8
Slide 8 text
Live Captions
Machine Learning
powered live captioning
of any video you are
watching, even it did not
have subtitles.
Slide 9
Slide 9 text
Foldable UI
Support for multiple
different size screens
and foldable devices
Slide 10
Slide 10 text
Dark Mode
New dark mode
support, for most apps,
helps reduce battery
drain on OLED phones.
Slide 11
Slide 11 text
Digital
Wellbeing
Check app usage, turn
on focus mode to
disable distracting apps,
mute notifications.
Slide 12
Slide 12 text
What has changed
for app developers ?
Slide 13
Slide 13 text
Privacy
Android 10 has a focus on improving
users’ privacy, which means apps must
adapt to new restrictions
● Scoped Storage
● Foreground-only location
● Background execution limits
● Access to unique ids like IMEI
● Wifi/BT scanning
Slide 14
Slide 14 text
Scoped Storage
● Android 10 doesn’t allow apps to access entire SD Card
○ Used “scopes” like PICTURES, MUSIC, MOVIES etc
○ Apps can only see files within a scope
● File Managers, as we know them, might cease to exist
● Legacy support, for the time being
○ requestLegacyExternalStorage in Android Manifest
Slide 15
Slide 15 text
Background location
● New permission
ACCESS_BACKGROUND_LOCATION
● For older apps, OS automatically adds permission
if FINE/COARSE location requested.
● Must be explicitly added for targetSdk = 29
● Without this permission, location works only in
activities and foreground services
Slide 16
Slide 16 text
App upgrade location permission table
Slide 17
Slide 17 text
Unique identifier data masking in Android 10
Slide 18
Slide 18 text
Restrictions on scanning and metadata
Slide 19
Slide 19 text
Restrictions on background start
● Old way
○ Send intent with FLAG_ACTIVITY_NEW_TASK from service to start activity.
● New Way
○ Display time sensitive notifications with pending intent to activity
○ User can swipe away notification, or click it – which opens activity.
○ Even time-sensitive notifications are subject to DND rules.
● Exceptions
○ If app already is in foreground, or has a recent task open.
○ App is device policy manager.
Slide 20
Slide 20 text
Foreground Service Types
Slide 21
Slide 21 text
Clipboard Data Limitations
● You cannot access clipboard via ClipboardManager
● Only app that is currently default set IME (keyboard) has access to
last clips on clipboard.
● Users can only explicitly paste data into your app
Slide 22
Slide 22 text
Reading IMEI / MAC
● Only apps with READ_PRIVILEGED_PHONE_STATE can read IMEI
● Submitting apps with READ_PRIVILEGED_PHONE_STATE to Play
Store not allowed.
● Device Admin apps, and apps with carrier permissions (SIM card apps)
can still access
● MAC address is now randomized. Device Admin apps can still read
actual MAC address.
Slide 23
Slide 23 text
Toggling WiFi and reading saved networks
● Your app cannot toggle WiFi
○ WifiManager.setWifiEnabled() returns false always
● To nudge the user to turn on Wifi, send him to Settings app or use a
Setttings panel (more on this later).
● Apps cannot read any information about saved networks, nor can they
connect/reconnect/disable/forget saved networks.
Slide 24
Slide 24 text
Physical Activity Recognition
● To read step counter and step detector, new permission needed
○ ACTIVITY_RECOGNITION
● Accessing data indirectly from apps like Google Fit will also need the
same permission
Slide 25
Slide 25 text
What’s new
for developers
Slide 26
Slide 26 text
Biometric
Prompt
§ A new BiometricManager
with BiometricPrompt
§ Check if device has
biometrics
§ Available via
androidx.biometric
support library.
§ Supports face, fingerprint,
IRIS and other
mechanisms
Slide 27
Slide 27 text
Showing BiometricPrompt and handling callback
Slide 28
Slide 28 text
Wifi Suggestion API
Slide 29
Slide 29 text
New Wifi P2P Connection Mechanism (lot less code)
Slide 30
Slide 30 text
Audio Input Sharing
● Earlier only one app could read an audio source
● From Android 10, multiple apps can plug into the same audio source.
● Easier to make apps like call-recorder.
Slide 31
Slide 31 text
Notification
Seekbar
§ Media notifications can
have seekbar
§ Useful for Music apps
§ Can be display-only, or
also drag-to-seek
Slide 32
Slide 32 text
Dynamic Depth Format
Use depth information in a new open dynamic depth format.
Apps can use that information to post process (add/remove bokeh) from
the photos.
Slide 33
Slide 33 text
HEIC support
● High efficiency image file/codec (HEIF/HEIC) support
● All Android 10 devices can record video in HEIC
● All Android 10 devices can seamlessly and transparently read HEIC
files.
Slide 34
Slide 34 text
Settings
Panels
§ A new API to show a
popup to users to toggle
certain settings.
§ Android 10 doesn’t allow
apps to directly change
BT, Wifi etc states.
§ Apps can nudge a user by
showing a settings panel.
Slide 35
Slide 35 text
Open Settings Panel (really easy one-liner)
Slide 36
Slide 36 text
Sharing
Shortcuts API
§ Android Direct Share API
is really old, and had
become very slow if
multiple apps installed.
§ It used to query all
sharing intents at runtime
and the dialog would take
time.
§ Sharing Shortcuts API
makes it much faster.
Slide 37
Slide 37 text
Register Sharing Shortcuts in Manifest
Slide 38
Slide 38 text
Android OS
improvements
§ ART performance has
improved.
§ On-Device TensorFlow
support is better with
Neural Networks API 1.2
§ Thermal API for apps to
check device heat-up and
mitigate it.
Slide 39
Slide 39 text
Supporting
Android 10
Slide 40
Slide 40 text
Step 1
● Make sure your
current app works on
Android 10
● Get an Android 10
emulator or Android
10 device
(Oneplus/Pixel for
now)
● Check everything
works on your app
Slide 41
Slide 41 text
Step 2
● Set compileSdk to 29
and targetSdk to 29
● Make changes as per
new APIs
● Build app and check
new and changed
features.
● Release update.
Slide 42
Slide 42 text
One more thing
Slide 43
Slide 43 text
No content
Slide 44
Slide 44 text
Thank You!
Any questions ?
twitter - @championswimmer
github – championswimmer
speakerdeck.com/championswimm
er
email: [email protected]