API Level: 18
Android 4.3 (
JELLY_BEAN_MR2) is an update to the Jelly Bean release that offers new features for users and app developers. This document provides an introduction to the most notable new APIs.
As an app developer, you should download the Android 4.3 system image and SDK platform from the
SDK Manager as soon as possible. If you don't have a device running Android 4.3 on which to test your app, use the Android 4.3 system image to test your app on the
Android emulator. Then build your apps against the Android 4.3 platform to begin using the latest APIs.
Update your target API level
To better optimize your app for devices running Android 4.3, you should set your
targetSdkVersion to
"18", install it on an Android 4.3 system image, test it, then publish an update with this change.
You can use APIs in Android 4.3 while also supporting older versions by adding conditions to your code that check for the system API level before executing APIs not supported by your
minSdkVersion. To learn more about maintaining backward compatibility, read
Supporting Different Platform Versions.
Various APIs are also available in the Android
Support Library that allow you to implement new features on older versions of the platform.
Important Behavior Changes
If you have previously published an app for Android, be aware that your app might be affected by changes in Android 4.3.
If your app uses implicit intents...
Your app might misbehave in a restricted profile environment.
Users in a
restricted profile environment might not have all the standard Android apps available. For example, a restricted profile might have the web browser and camera app disabled. So your app should not make assumptions about which apps are available, because if you call
startActivity() without verifying whether an app is available to handle the
Intent, your app might crash in a restricted profile.
Intent intent = new Intent(Intent.ACTION_SEND);
...
if (intent.resolveActivity(getPackageManager()) != null) {
startActivity(intent);
} else {
Toast.makeText(context, R.string.app_not_available, Toast.LENGTH_LONG).show();
}
If your app depends on accounts...
Your app might misbehave in a restricted profile environment.
Users within a restricted profile environment do not have access to user accounts by default. If your app depends on an
Account, then your app might crash or behave unexpectedly when used in a restricted profile.
If you'd like to prevent restricted profiles from using your app entirely because your app depends on account information that's sensitive, specify the
android:requiredAccountType attribute in your manifest's
<application> element.
If you’d like to allow restricted profiles to continue using your app even though they can’t create their own accounts, then you can either disable your app features that require an account or allow restricted profiles to access the accounts created by the primary user. For more information, see the section below about
Supporting accounts in a restricted profile.
If your app uses VideoView...
Your video might appear smaller on Android 4.3.
On previous versions of Android, the
VideoView widget incorrectly calculated the
"wrap_content" value for
layout_height and
layout_width to be the same as
"match_parent". So while using
"wrap_content" for the height or width may have previously provided your desired video layout, doing so may result in a much smaller video on Android 4.3 and higher. To fix the issue, replace
"wrap_content" with
"match_parent" and verify your video appears as expected on Android 4.3 as well as on older versions.
Restricted Profiles
On Android tablets, users can now create restricted profiles based on the primary user. When users create a restricted profile, they can enable restrictions such as which apps are available to the profile. A new set of APIs in Android 4.3 also allow you to build fine-grain restriction settings for the apps you develop. For example, by using the new APIs, you can allow users to control what type of content is available within your app when running in a restricted profile environment.
The UI for users to control the restrictions you've built is managed by the system's Settings application. To make your app's restriction settings appear to the user, you must declare the restrictions your app provides by creating a
BroadcastReceiver that receives the
ACTION_GET_RESTRICTION_ENTRIES intent. The system invokes this intent to query all apps for available restrictions, then builds the UI to allow the primary user to manage restrictions for each restricted profile.
TYPE_BOOLEAN for a restriction that is either true or false.TYPE_CHOICE for a restriction that has multiple choices that are mutually exclusive (radio button choices).TYPE_MULTI_SELECT for a restriction that has multiple choices that are not mutually exclusive (checkbox choices).
The system creates the UI for your app's restrictions in the Settings app and saves each restriction with the unique key you provided for each
RestrictionEntry object. When the user opens your app, you can query for any current restrictions by calling
getApplicationRestrictions(). This returns a
Bundle containing the key-value pairs for each restriction you defined with the
RestrictionEntry objects.
If you want to provide more specific restrictions that can't be handled by boolean, single choice, and multi-choice values, then you can create an activity where the user can specify the restrictions and allow users to open that activity from the restriction settings. In your broadcast receiver, include the
EXTRA_RESTRICTIONS_INTENT extra in the result
Bundle. This extra must specify an
Intent indicating the
Activity class to launch (use the
putParcelable() method to pass
EXTRA_RESTRICTIONS_INTENT with the intent). When the primary user enters your activity to set custom restrictions, your activity must then return a result containing the restriction values in an extra using either the
EXTRA_RESTRICTIONS_LISTor
EXTRA_RESTRICTIONS_BUNDLE key, depending on whether you specify
RestrictionEntry objects or key-value pairs, respectively.
Supporting accounts in a restricted profile
Any accounts added to the primary user are available to a restricted profile, but the accounts are not accessible from the
AccountManager APIs by default. If you attempt to add an account with
AccountManager while in a restricted profile, you will get a failure result. Due to these restrictions, you have the following three options:
<application ...
android:restrictedAccountType="com.example.account.type" >
Caution: Enabling this attribute provides your app access to the primary user's accounts from restricted profiles. So you should allow this only if the information displayed by your app does not reveal personally identifiable information (PII) that’s considered sensitive. The system settings will inform the primary user that your app grants restricted profiles to their accounts, so it should be clear to the user that account access is important for your app's functionality. If possible, you should also provide adequate restriction controls for the primary user that define how much account access is allowed in your app.
Disable certain functionality when unable to modify accounts.
If you want to use accounts, but don’t actually require them for your app’s primary functionality, you can check for account availability and disable features when not available. You should first check if there is an existing account available. If not, then query whether it’s possible to create a new account by calling
getUserRestrictions() and check the
DISALLOW_MODIFY_ACCOUNTS extra in the result. If it is
true, then you should disable whatever functionality of your app requires access to accounts. For example:
UserManager um = (UserManager) context.getSystemService(Context.USER_SERVICE);
Bundle restrictions = um.getUserRestrictions();
if (restrictions.getBoolean(UserManager.DISALLOW_MODIFY_ACCOUNTS, false)) {
// cannot add accounts, disable some functionality
}
Note: In this scenario, you should not declare any new attributes in your manifest file.
Disable your app when unable to access private accounts.
If it’s instead important that your app not be available to restricted profiles because your app depends on sensitive personal information in an account (and because restricted profiles currently cannot add new accounts), add the
android:requiredAccountType attribute to the
<application> tag:
<application ...
android:requiredAccountType="com.example.account.type" >
For example, the Gmail app uses this attribute to disable itself for restricted profiles, because the owner's personal email should not be available to restricted profiles.
Wireless and Connectivity
Bluetooth Low Energy (Smart Ready)
Android now supports Bluetooth Low Energy (LE) with new APIs in
android.bluetooth. With the new APIs, you can build Android apps that communicate with Bluetooth Low Energy peripherals such as heart rate monitors and pedometers.
Because Bluetooth LE is a hardware feature that is not available on all Android-powered devices, you must declare in your manifest file a
<uses-feature> element for
"android.hardware.bluetooth_le":
<uses-feature android:name="android.hardware.bluetooth_le" android:required="true" />
If you're already familiar with Android's Classic Bluetooth APIs, notice that using the Bluetooth LE APIs has some differences. Most importantly is that there's now a
BluetoothManager class that you should use for some high level operations such as acquiring a
BluetoothAdapter, getting a list of connected devices, and checking the state of a device. For example, here's how you should now get the
BluetoothAdapter:
final BluetoothManager bluetoothManager =
(BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
mBluetoothAdapter = bluetoothManager.getAdapter();
If you want to scan for only specific types of peripherals, you can instead call
startLeScan() and include an array of
UUID objects that specify the GATT services your app supports.
Note: You can only scan for Bluetooth LE devices or scan for Classic Bluetooth devices using previous APIs. You cannot scan for both LE and Classic Bluetooth devices at once.
Accessing Bluetooth features on a device also requires that your app request certain Bluetooth user permissions. For more information, see the
Bluetooth Low Energy API guide.
Wi-Fi scan-only mode
When attempting to identify the user's location, Android may use Wi-Fi to help determine the location by scanning nearby access points. However, users often keep Wi-Fi turned off to conserve battery, resulting in location data that's less accurate. Android now includes a scan-only mode that allows the device Wi-Fi to scan access points to help obtain the location without connecting to an access point, thus greatly reducing battery usage.
Wi-Fi configuration
New
WifiEnterpriseConfig APIs allow enterprise-oriented services to automate Wi-Fi configuration for managed devices.
Quick response for incoming calls
Since Android 4.0, a feature called "Quick response" allows users to respond to incoming calls with an immediate text message without needing to pick up the call or unlock the device. Until now, these quick messages were always handled by the default Messaging app. Now any app can declare its capability to handle these messages by creating a
Servicewith an intent filter for
ACTION_RESPOND_VIA_MESSAGE.
When the user responds to an incoming call with a quick response, the Phone app sends the
ACTION_RESPOND_VIA_MESSAGE intent with a URI describing the recipient (the caller) and the
EXTRA_TEXT extra with the message the user wants to send. When your service receives the intent, it should deliver the message and immediately stop itself (your app should not show an activity).
Android now makes it easier for you to write your own Dynamic Adaptive Streaming over HTTP (DASH) players in accordance with the ISO/IEC 23009-1 standard, using existing APIs in
MediaCodec and
MediaExtractor. The framework underlying these APIs has been updated to support parsing of fragmented MP4 files, but your app is still responsible for parsing the MPD metadata and passing the individual streams to
MediaExtractor.
If you want to use DASH with encrypted content, notice that the
getSampleCryptoInfo() method returns the
MediaCodec.CryptoInfo metadata describing the structure of each encrypted media sample. Also, the
getPsshInfo()method has been added to
MediaExtractor so you can access the PSSH metadata for your DASH media. This method returns a map of
UUID objects to bytes, with the
UUID specifying the crypto scheme, and the bytes being the data specific to that scheme.
Media DRM
The new
MediaDrm class provides a modular solution for digital rights management (DRM) with your media content by separating DRM concerns from media playback. For instance, this API separation allows you to play back Widevine-encrypted content without having to use the Widevine media format. This DRM solution also supports DASH Common Encryption so you can use a variety of DRM schemes with your streaming content.
You can use
MediaDrm to obtain opaque key-request messages and process key-response messages from the server for license acquisition and provisioning. Your app is responsible for handling the network communication with the servers; the
MediaDrm class provides only the ability to generate and process the messages.
The
MediaDrm APIs are intended to be used in conjunction with the
MediaCodec APIs that were introduced in Android 4.1 (API level 16), including
MediaCodec for encoding and decoding your content,
MediaCrypto for handling encrypted content, and
MediaExtractor for extracting and demuxing your content.
You must first construct
MediaExtractor and
MediaCodec objects. You can then access the DRM-scheme-identifying
UUID, typically from metadata in the content, and use it to construct an instance of a
MediaDrm object with its constructor.
Video encoding from a Surface
Android 4.1 (API level 16) added the
MediaCodec class for low-level encoding and decoding of media content. When encoding video, Android 4.1 required that you provide the media with a
ByteBuffer array, but Android 4.3 now allows you to use a
Surface as the input to an encoder. For instance, this allows you to encode input from an existing video file or using frames generated from OpenGL ES.
The new
MediaMuxer class enables multiplexing between one audio stream and one video stream. These APIs serve as a counterpart to the
MediaExtractor class added in Android 4.2 for de-multiplexing (demuxing) media.
Supported output formats are defined in
MediaMuxer.OutputFormat. Currently, MP4 is the only supported output format and
MediaMuxer currently supports only one audio stream and/or one video stream at a time.
Playback progress and scrubbing for RemoteControlClient
In Android 4.0 (API level 14), the
RemoteControlClient was added to enable media playback controls from remote control clients such as the controls available on the lock screen. Android 4.3 now provides the ability for such controllers to display the playback position and controls for scrubbing the playback. If you've enabled remote control for your media app with the
RemoteControlClient APIs, then you can allow playback scrubbing by implementing two new interfaces.
Then implement the following two new interfaces:
RemoteControlClient.OnGetPlaybackPositionListener- This includes the callback
onGetPlaybackPosition(), which requests the current position of your media when the remote control needs to update the progress in its UI.
RemoteControlClient.OnPlaybackPositionUpdateListener- This includes the callback
onPlaybackPositionUpdate(), which tells your app the new time code for your media when the user scrubs the playback with the remote control UI.
Once you update your playback with the new position, call
setPlaybackState() to indicate the new playback state, position, and speed.
Graphics
Support for OpenGL ES 3.0
Android 4.3 adds Java interfaces and native support for OpenGL ES 3.0. Key new functionality provided in OpenGL ES 3.0 includes:
- Acceleration of advanced visual effects
- High quality ETC2/EAC texture compression as a standard feature
- A new version of the GLSL ES shading language with integer and 32-bit floating point support
- Advanced texture rendering
- Broader standardization of texture size and render-buffer formats
The Java interface for OpenGL ES 3.0 on Android is provided with
GLES30. When using OpenGL ES 3.0, be sure that you declare it in your manifest file with the
<uses-feature> tag and the
android:glEsVersion attribute. For example:
<manifest>
<uses-feature android:glEsVersion="0x00030000" />
...</manifest>
For more information about using OpenGL ES, including how to check the device's supported OpenGL ES version at runtime, see the
OpenGL ES API guide.
Mipmapping for drawables
Using a mipmap as the source for your bitmap or drawable is a simple way to provide a quality image and various image scales, which can be particularly useful if you expect your image to be scaled during an animation.
Android 4.2 (API level 17) added support for mipmaps in the
Bitmap class—Android swaps the mip images in your
Bitmap when you've supplied a mipmap source and have enabled
setHasMipMap(). Now in Android 4.3, you can enable mipmaps for a
BitmapDrawable object as well, by providing a mipmap asset and setting the
android:mipMap attribute in a bitmap resource file or by calling
hasMipMap().
User Interface
View overlays
The new
ViewOverlay class provides a transparent layer on top of a
View on which you can add visual content and which does not affect the layout hierarchy. You can get a
ViewOverlay for any
View by calling
getOverlay(). The overlay always has the same size and position as its host view (the view from which it was created), allowing you to add content that appears in front of the host view, but which cannot extend the bounds of that host view.
Using a
ViewOverlay is particularly useful when you want to create animations such as sliding a view outside of its container or moving items around the screen without affecting the view hierarchy. However, because the usable area of an overlay is restricted to the same area as its host view, if you want to animate a view moving outside its position in the layout, you must use an overlay from a parent view that has the desired layout bounds.
Note: All drawables and views that you add to an overlay are visual only. They cannot receive focus or input events.
For example, the following code animates a view sliding to the right by placing the view in the parent view's overlay, then performing a translation animation on that view:
View view = findViewById(R.id.view_to_remove);
ViewGroup container = (ViewGroup) view.getParent();
container.getOverlay().add(view);
ObjectAnimator anim = ObjectAnimator.ofFloat(view, "translationX", container.getRight());
anim.start();
Optical bounds layout
For views that contain nine-patch background images, you can now specify that they should be aligned with neighboring views based on the "optical" bounds of the background image rather than the "clip" bounds of the view.
For example, figures 1 and 2 each show the same layout, but the version in figure 1 is using clip bounds (the default behavior), while figure 2 is using optical bounds. Because the nine-patch images used for the button and the photo frame include padding around the edges, they don’t appear to align with each other or the text when using clip bounds.
Note: The screenshot in figures 1 and 2 have the "Show layout bounds" developer setting enabled. For each view, red lines indicate the optical bounds, blue lines indicate the clip bounds, and pink indicates margins.
Mouse over to hide the layout bounds.
Figure 1. Layout using clip bounds (default).
Figure 2. Layout using optical bounds.
To align the views based on their optical bounds, set the android:layoutMode attribute to "opticalBounds" in one of the parent layouts. For example:
<LinearLayout android:layoutMode="opticalBounds" ... >
For this to work, the nine-patch images applied to the background of your views must specify the optical bounds using red lines along the bottom and right-side of the nine-patch file (as shown in figure 3). The red lines indicate the region that should be subtracted from the clip bounds, leaving the optical bounds of the image.
When you enable optical bounds for a
ViewGroup in your layout, all descendant views inherit the optical bounds layout mode unless you override it for a group by setting
android:layoutMode to
"clipBounds". All layout elements also honor the optical bounds of their child views, adapting their own bounds based on the optical bounds of the views within them. However, layout elements (subclasses of
ViewGroup) currently do not support optical bounds for nine-patch images applied to their own background.
If you create a custom view by subclassing
View,
ViewGroup, or any subclasses thereof, your view will inherit these optical bound behaviors.
Note: All widgets supported by the Holo theme have been updated with optical bounds, including
Button,
Spinner,
EditText, and others. So you can immediately benefit by setting the
android:layoutMode attribute to
"opticalBounds" if your app applies a Holo theme (
Theme.Holo,
Theme.Holo.Light, etc.).
To specify optical bounds for your own nine-patch images with the
Draw 9-patch tool, hold CTRL when clicking on the border pixels.
Animation for Rect values
Window attach and focus listener
TV overscan support
Screen orientation
"userLandscape"- Behaves the same as
"sensorLandscape", except if the user disables auto-rotate then it locks in the normal landscape orientation and will not flip.
"userPortrait"- Behaves the same as
"sensorPortrait", except if the user disables auto-rotate then it locks in the normal portrait orientation and will not flip.
"fullUser"- Behaves the same as
"fullSensor" and allows rotation in all four directions, except if the user disables auto-rotate then it locks in the user's preferred orientation.
Additionally, you can now also declare "locked" to lock your app's orientation into the screen's current orientation.
Rotation animations
The new
rotationAnimation field in
WindowManager allows you to select between one of three animations you want to use when the system switches screen orientations. The three animations are:
Note: These animations are available only if you've set your activity to use "fullscreen" mode, which you can enable with themes such as
Theme.Holo.NoActionBar.Fullscreen.
For example, here's how you can enable the "crossfade" animation:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
WindowManager.LayoutParams params = getWindow().getAttributes();
params.rotationAnimation = WindowManager.LayoutParams.ROTATION_ANIMATION_CROSSFADE;
getWindow().setAttributes(params);
...
}
New sensor types
The new
TYPE_GYROSCOPE_UNCALIBRATED and
TYPE_MAGNETIC_FIELD_UNCALIBRATED sensors provide raw sensor data without consideration for bias estimations. That is, the existing
TYPE_GYROSCOPE and
TYPE_MAGNETIC_FIELD sensors provide sensor data that takes into account estimated bias from gyro-drift and hard iron in the device, respectively. Whereas the new "uncalibrated" versions of these sensors instead provide the raw sensor data and offer the estimated bias values separately. These sensors allow you to provide your own custom calibration for the sensor data by enhancing the estimated bias with external data.
Notification Listener
Android 4.3 adds a new service class,
NotificationListenerService, that allows your app to receive information about new notifications as they are posted by the system.
If your app currently uses the accessibility service APIs to access system notifications, you should update your app to use these APIs instead.
The new Contacts Provider query,
Contactables.CONTENT_URI, provides an efficient way to get one
Cursor that contains all email addresses and phone numbers belonging to all contacts matching the specified query.
New APIs have been added to Contacts Provider that allow you to efficiently query recent changes to the contacts data. Previously, your app could be notified when something in the contacts data changed, but you would not know exactly what changed and would need to retrieve all contacts then iterate through them to discover the change.
To track changes to inserts and updates, you can now include the
CONTACT_LAST_UPDATED_TIMESTAMP parameter with your selection to query only the contacts that have changed since the last time you queried the provider.
Additionally, the Contacts Provider now broadcasts the
CONTACTS_DATABASE_CREATED action when the user clears the contacts storage through the system settings menu, effectively recreating the Contacts Provider database. It’s intended to signal apps that they need to drop all the contact information they’ve stored and reload it with a new query.
For sample code using these APIs to check for changes to the contacts, look in the ApiDemos sample available in the
SDK Samples download.
Localization
Improved support for bi-directional text
Previous versions of Android support right-to-left (RTL) languages and layout, but sometimes don't properly handle mixed-direction text. So Android 4.3 adds the
BidiFormatter APIs that help you properly format text with opposite-direction content without garbling any parts of it.
For example, when you want to create a sentence with a string variable, such as "Did you mean 15 Bay Street, Laurel, CA?", you normally pass a localized string resource and the variable to
String.format():
Resources res = getResources();
String suggestion = String.format(res.getString(R.string.did_you_mean), address);
However, if the locale is Hebrew, then the formatted string comes out like this:
האם התכוונת ל 15 Bay Street, Laurel, CA?
That's wrong because the "15" should be left of "Bay Street." The solution is to use
BidiFormatter and its
unicodeWrap() method. For example, the code above becomes:
Resources res = getResources();
BidiFormatter bidiFormatter = BidiFormatter.getInstance();
String suggestion = String.format(res.getString(R.string.did_you_mean),
bidiFormatter.unicodeWrap(address));
By default,
unicodeWrap() uses the first-strong directionality estimation heuristic, which can get things wrong if the first signal for text direction does not represent the appropriate direction for the content as a whole. If necessary, you can specify a different heuristic by passing one of the
TextDirectionHeuristic constants from
TextDirectionHeuristicsto
unicodeWrap().
Note: These new APIs are also available for previous versions of Android through the Android
Support Library, with the
BidiFormatter class and related APIs.
Accessibility Services
Handle key events
An
AccessibilityService can now receive a callback for key input events with the
onKeyEvent() callback method. This allows your accessibility service to handle input for key-based input devices such as a keyboard and translate those events to special actions that previously may have been possible only with touch input or the device's directional pad.
Select text and copy/paste
Declare accessibility features
Beginning with Android 4.3, an accessibility service must declare accessibility capabilities in its metadata file in order to use certain accessibility features. If the capability is not requested in the metadata file, then the feature will be a no-op. To declare your service's accessibility capabilities, you must use XML attributes that correspond to the various "capability" constants in the
AccessibilityServiceInfo class.
Testing and Debugging
Automated UI testing
The new
UiAutomation class provides APIs that allow you to simulate user actions for test automation. By using the platform's
AccessibilityService APIs, the
UiAutomation APIs allow you to inspect the screen content and inject arbitrary keyboard and touch events.
There is a variety of other operations that the
UiAutomation APIs expose at a very low level to encourage the development of UI test tools such as
uiautomator. For instance,
UiAutomation can also:
- Inject input events
- Change the orientation of the screen
- Take screenshots
Systrace events for apps
Android 4.3 adds the
Trace class with two static methods,
beginSection() and
endSection(), which allow you to define blocks of code to include with the systrace report. By creating sections of traceable code in your app, the systrace logs provide you a much more detailed analysis of where slowdown occurs within your app.
Security
Android key store for app-private keys
Android now offers a custom Java Security Provider in the
KeyStore facility, called Android Key Store, which allows you to generate and save private keys that may be seen and used by only your app. To load the Android Key Store, pass
"AndroidKeyStore" to
KeyStore.getInstance().
Hardware credential storage
Android also now supports hardware-backed storage for your
KeyChain credentials, providing more security by making the keys unavailable for extraction. That is, once keys are in a hardware-backed key store (Secure Element, TPM, or TrustZone), they can be used for cryptographic operations but the private key material cannot be exported. Even the OS kernel cannot access this key material. While not all Android-powered devices support storage on hardware, you can check at runtime if hardware-backed storage is available by calling
KeyChain.IsBoundKeyAlgorithm().
Manifest Declarations
Declarable required features
The following values are now supported in the
<uses-feature> element so you can ensure that your app is installed only on devices that provide the features your app needs.
FEATURE_APP_WIDGETS- Declares that your app provides an app widget and should be installed only on devices that include a Home screen or similar location where users can embed app widgets. Example:
<uses-feature android:name="android.software.app_widgets" android:required="true" />
FEATURE_HOME_SCREEN- Declares that your app behaves as a Home screen replacement and should be installed only on devices that support third-party Home screen apps. Example:
<uses-feature android:name="android.software.home_screen" android:required="true" />
FEATURE_INPUT_METHODS- Declares that your app provides a custom input method (a keyboard built with
InputMethodService) and should be installed only on devices that support third-party input methods. Example:<uses-feature android:name="android.software.input_methods" android:required="true" />
FEATURE_BLUETOOTH_LE- Declares that your app uses Bluetooth Low Energy APIs and should be installed only on devices that are capable of communicating with other devices via Bluetooth Low Energy. Example:
<uses-feature android:name="android.software.bluetooth_le" android:required="true" />
User permissions
The following values are now supported in the
<uses-permission> to declare the permissions your app requires in order to access certain APIs.
BIND_NOTIFICATION_LISTENER_SERVICE- Required to use the new
NotificationListenerService APIs.
SEND_RESPOND_VIA_MESSAGE- Required to receive the
ACTION_RESPOND_VIA_MESSAGE intent.
