Developing for MSI Android Devices

Transcription

1 Android Application Development Enterprise Features October 2013

2 Developing for MSI Android Devices Majority is the same as developing for any Android device Fully compatible with Android SDK We test using the Android Compatibility Test Suite (CTS) to ensure compatibility We have added extensions and features to enable enterprise applications/deployments

3 Getting Started with Android Development

4 Install the Android Developer Tools Download ADT bundle from Single download, includes everything you need to begin developing apps (almost) Eclipse + ADT plugin Android SDK Tools Android Platform-tools The latest Android platform The latest Android system image for the emulator JDK 6 (JRE alone is not sufficient) from Sun (Oracle) JDK 7 not officially supported, but works ownloads/java-archive-downloads-javase html#jdk-6u45-oth-jpr

5 Configuring Android Debug Bridge (ADB) MSI devices fully compatible with ADB and other tools ADB creates a link over USB used for command line tools and Eclipse IDE debugger Google provides USB ADB driver with Android SDK Configuring Google USB ADB Driver Windows XP and Windows7 Driver available Copy driver to PC Update to adb_usb.ini to include Motorola devices (0x0451 and 0x05E0) Connect device to PC and navigate to folder with driver when asked Windows 8 Disable device driver signature enforcement Same procedure as above Linux Update adb_usb.ini file and rules file to include Motorola devices (0x0451 and 0x05E0)

6 USB Media Transfer Protocol (MTP) Starting with Ice Cream Sandwich, Android changed its default USB protocol from USB Mass Storage to Media Transfer Protocol (MTP) Windows 7 works with MTP out of the box Windows XP requires update to Windows Media Player 11 to install MTP patch Click Help -> Check for Player Updates from WMP Or download MTP kit from Ensure select Composite ADB Device when installing USB device to ensure can use both ADB and MTP connections

7 Device Set-Up for Development Use system settings to Enable Android Debug Bridge Gingerbread Settings -> Applications-> Development Jelly Bean Settings -> Developer Options

8 Android API Levels Each Version of Android has a unique API Level, allowing applications to ensure compatibility Gingerbread devices API Level 10 Jelly Bean devices API Level 16 Complete list at developer.android.com/guide/topics/uses-sdk-element.html The Application manifest.xml <uses-sdk> element lets you define compatibility with one or more versions of Android android:minsdkversion Specifies the minimum API Level on which the application is able to run. The default value is "1 (runs on all versions) android:targetsdkversion Specifies the API Level on which the application is designed to run (i.e. what is was tested on) android:maxsdkversion Specifies the maximum API Level on which the application is able to run. Caution: Not recommended in most cases as application will fail if OS is updated

9 More Info on Native Development Google s Android Training Site: Google s API Reference: Google s Developer News and Documents:

10 Retrieving Battery Status Receive standard Android ACTION_BATTERY_CHANGED broadcast Intent Intent Extended Data has various battery information Motorola Adds additional battery data in the standard Android Intent Not available on all models

11 Standard Battery Data Available Constant EXTRA_HEALTH EXTRA_ICON_SMALL Data value integer containing the current health constant. integer containing the resource ID of a small status bar icon with battery state EXTRA_LEVEL integer field containing the current battery level, from 0 EXTRA_PLUGGED EXTRA_PRESENT EXTRA_SCALE EXTRA_STATUS to EXTRA_SCALE integer indicating whether the device is plugged in to a power source boolean indicating whether a battery is present integer containing the maximum battery level integer containing the current status constant EXTRA_TECHNOLOGY String describing the technology of the current battery EXTRA_TEMPERATURE integer containing the current battery temperature EXTRA_VOLTAGE integer containing the current battery voltage level

12 Motorola Battery Data Available Constant "bkvoltage" "mfd" "serialnumber" "partnumber" "uniqueid" "ratedcapacity" "cycle" Data value Backup Battery Voltage Battery Manufacture Date Battery Serial Number Part Number for Battery Unique ID for Battery Rated Capacity of the Battery Charge Cycle count of the Battery

13 Example: Retrieving Battery Status mbattfilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED); mbattintent = this.registerreceiver(this.batteryinforeceiver, mbattfilter); Register the Intent private static final String MOTO_EXTRA_SERIAL_NUMBER = "serialnumber"; private BroadcastReceiver batteryinforeceiver = new BroadcastReceiver() public void onreceive(context context, Intent intent) { Receiver runs when battery status changes /* Standard Android Battery Information */ int status = intent.getintextra(batterymanager.extra_status,-1); String tech = intent.getextras().getstring(batterymanager.extra_technology); int voltage = intent.getintextra(batterymanager.extra_voltage, 0); /* Motorola Solutions specific Data (only one field shown here as an example)*/ String SerialNumber = intent.getextras().getstring(moto_extra_serial_number); Battery Info is in Intent extra data

14 USB Power On ET-1, 5V power for accessories can be controlled by an application via Intents Accessory port is the top USB port USB Power Control Intents com.motorolasolutions.intent.usbpowerenable com.motorolasolutions.intent.usbpowerdisable

15 What is Mx? Mx represents a suite of Enterprise Features on Top of standard, commercially available AOSP (Android Open Source Project) Mx maintains Compatibility with Standard Android Applications There is no generally available exposed API Surface for Mx (currently exclusive to MDM partners)

16 MxOS Extension Features Multiuser Authentication Separation of User Data Spaces Reduced System Settings Dialog Whitelist Application Secure Storage Volume Encryption Full SD Card Encryption Certificate Management Silent Application Installation Ability to enable/disable USB Mass Storage & ADB Set a New APK as the Default Home Screen System Settings Configurable through MDM

17 Overview MX Multiuser Framework Allows multiple users to access the device Each user optionally has their own data space and settings Unlock screen replaced by a credentials dialog Username and password required to unlock the device Notification area will indicate the current user. Tapping on the notification will trigger the logout process Choice of Local or Remote Authentication Local database on the device Authenticate against an Active Directory server When remote authentication is selected, users in the local database are permitted as well. Only administrator users are permitted to modify any system setting

18 Development Info & Tips MX Multiuser Framework Development Impact The multiuser framework is transparent Although data separation adds a layer of abstraction, no special coding is needed Avoid using hard coded paths All open applications are forced closed upon logout Exception: those applications or services that are required to span users Tips Always create at least one administrative user in the local database. This will allow a device using remote authentication to be unlocked and configured if connection to the AD server is lost.

19 Development Info & Tips MX ApplicationLock Overview Works in conjunction with Multiuser Framework Each user is assigned to a group(s) Each group is assigned a white list of packages which are permitted Each white list consists of three separate pieces System list applications needed for the system to operate properly Common list applications permitted for ALL groups Individual list applications permitted for the individual group Users included in multiple groups are permitted the sum of the individual list for each group Packages are defined by their package name Any application not included on the white list is NOT permitted to be installed or launched

20 Development Info & Tips MX ApplicationLock Development Impact All applications spawned from another application must be included on the same white list Tips Be sure to create an administrator group for users that are permitted to use ALL applications Be careful with use of the wildcard character in the white list, this may lead to permitting applications that are unintended for that group

21 Overview Development Info & Tips MX Secure Storage Encryption can span the entire SD Card or only an individual folder tree When the entire SD Card is encrypted: The card will be reformatted When only a folder tree is encrypted: Different folder trees can use different keys The folder tree can be mounted under /data or /sdcard Encryption / decryption occurs between the file system and the application making this feature transparent to applications. The auto mount feature can be used to direct the system to mount the encrypted data automatically on reset If the encryption key is known, the data within the encrypted area can be copied to a Linux system and read

22 Development Info & Tips MX Secure Storage Development Impact None: once the encrypted area is mounted, the data from the application is read and written using standard algorithms Tips In many cases the SD Card is used to deploy OS updates. If the entire SD Card is encrypted, the recovery mechanism will not be able to read the SD Card When a folder tree is mounted under /data, make sure the path is correct for the intended application A folder tree cannot be mounted if the mount point contains unencrypted data Factory reset will erase the encryption keys. Be sure to record and secure encryption keys to re-install into a device that has been factory reset.

23 MSI Utilities 4 Basic Utilities 1) Multiuser Administrator -on-device utility used to enable/disable the Multiuser feature and populate the credentials database. 2) AppLock Administrator -on-device utility used to enable/disable the Application Lock feature and install groups and white list files 3) Enterprise Administrator -a desktop utility used to manage users, groups and white lists. The export function of this utility will write files in the format necessary for the Multiuser Administrator and the AppLock Administrator (migrating to XML) 4) Secure Storage Administrator (SSA) on-device utility used to install and delete encryption keys. Also used to create, mount/un-mount and delete EFS partitions.

24 Enterprise Administrator Runs on Windows Manage Users Groups Packages Local or Server based user authentication Import and Export Users Groups Packages

25 Enterprise Administrator

26 Determining Packages Installed on Device On Host computer, open a command prompt (or a terminal in Ubuntu) C:\[path of sdk]\platform-tools\adb shell $pm list packages f > sdcard/pkglist.txt $exit

27 User Addition

28 Group Manager

29 Local or Server Based Authentication

30 Multi-User Administrator Users must be defined in the Enterprise Administrator before enabling Export Files from the Enterprise Administrator Copy to root of device Loading User list immediately enables Multiuser Mode

31 Multi-User Administrator

32 Multi-User Enabled Note Multi-User icon in upper left Drag icon down to log off

33 App Lock Administrator Multi-User must be enabled before App Lock Groups and White lists must be defined in the Enterprise Administrator before enabling Export Files from the Enterprise Administrator Copy to root of device Install Groups and White Lists

34 App Lock Administrator

35 Secure Storage Administrator Allows creation and maintenance of encryption keys Allows creation, control, and deletion of encrypted volumes

36 Secure Storage Administrator

37 Enterprise Home Screen (EHS) Comparable to Windows AppCenter Separately Downloadable App (apk), XML configured (folder = /enterprise/usr/) Device Oriented (i.e. Not Individual User) Replacement App Launcher exposes only chosen icons Ability to selectively choose Icons/apps on home screen Kiosk Mode (auto app invocation preventing user from exiting) Auto Launch (auto app invocation allowing user to exit) A Separate Tools Screen (to better organize) An Admin Password for enabling configuration (256 bit AES encrypted)

38 Enterprise Home Screen Enterprise Home Screen (EHS) is a replacement application launcher Designed to allow only specified applications to be launched. Enterprise Home Screen is configured via an xml file found in the /enterprise/usr/ folder in the internal memory of the device. This file is read on startupand every time the home button is pressed while in EHS. Features Kiosk mode and auto launch applications User and Admin modes Admin password with 256 bit AES encryption Tools menu, battery and wireless status screens Customize EHS launcher title Icon text and background color Background wallpaper Orientation Bypass swipe to unlock

39 4 Enterprise Home Screen (EHS)

40 Enterprise Home Screen Enterprise Home Screen is configured via an xml file. This file is read on startup and every time the home button is pressed while in EHS. 1. Auto launch (optional) 2. Kiosk launch (optional) 3. Applications 4. Tools 5. Password 6. Preferences Title text displayed in the launcher title bar App icon label background color App icon label text color Screen orientation Bypass swipe to unlock Wallpaper

41 Button Remapping ET1 Remapping UI MC40 Remapping UI

42 OS -Key Button Remapping Each device has external buttons that can be remapped to change function or launch an application Remapping tool on device under Settings Key Programmer To deploy to multiple devices, configure the buttons as desired and then export an XML file To deploy mappings on MC40 Copy the XML file to a /enterprise/user/keypad folder on the device NOTE: no reset is required, the XML file will be automatically consumed and the keys remapped

43 Folder Persistence in MSI Android Devices Folder Reboot Enterprise Reset Factory Reset /data Persistent Not Persistent Not Persistent /enterprise Persistent Persistent Not Persistent /sdcard Persistent Persistent Persistent Enterprise and Factory reset thru recovery mode (similar to an OS update) Reset files available from Ensure you use correct reset file (gingerbread or Jellybean) Use factory reset with caution!!

44 GOOGLE MOBILE SERVICES Google offers a variety of applications and associated services for developers independent of the Android Open Source Project. The services are available as native Android API s via an SDK extra. The services can only be used on Android devices that choose to include them. Collectively, they are known as Google Mobile Services.

45 WHY GOOGLE MOBILE SERVICES IS NOT PRESENT ON ALL MSI DEVICES SECURITY Google Mobile Services requires devices to be identified with a specific GoogleID, and routes enterprise data through Google s servers. PRIVACY Google revamped their privacy policy in early 2012 allowing for richer user profiling across all services, for targeted advertising. Usage acceptance allows Google to track a device s every move. Google may collect IP Addresses,location, nearby wi-fi info, local storage and device setting details.

46 GOOGLE MOBILE SERVICES

47 More Information Join the Motorola Solutions Android Developer Community The Go To place for all your MSI Android development needs Documentation, Technical Articles, Discussion Forums

48 THANK YOU MOTOROLA, MOTO, MOTOROLA SOLUTIONS and the Stylized M Logo are trademarks orregistered trademarks of Motorola Trademark Holdings, LLC and are used under license. All other trademarks are the property of their respective owners Motorola Solutions, Inc. All rights reserved.