- Welcome
- Basics
- Device apps
- Overview
- Knox licenses
- Knox SDK
- Overview
- About the SDK
- What's new
- What's new
- Migrations
- Android 11
- Android Enterprise
- Device admin deprecation
- DA deprecation and Samsung
- DA deprecation and VMware
- FAQs
- FAQ Index
- What is DA Deprecation?
- What is being deprecated with device admin?
- What is API level 29, as it relates to DA deprecation?
- What is the impact of DA deprecation to Knox?
- As a Knox partner, what do I need to do?
- What happens to DA apps when upgraded to Android Q?
- When can I safely upgrade to Android Q?
- What if a device already has Android Q?
- Can my DA app coexist with a UEM app running as DO?
- Are there changes to Knox Configure due to DA deprecation?
- Can I use my DA app alongside Knox Configure?
- Does KME still support device enrollment using DA?
- As DA is not in Android Q, can I enroll via KME to Work Profile?
- Get started
- Sample app tutorials
- Features
- Independent Software Vendors
- ML Developers
- Introduction
- Whitepaper
- Model Protection APIs
- Protect ML model
- ML Encryption Tool
- Knox ML Encryption Tool Revision
- FAQs
- Are there any additional steps for Linux to give execute permissions to conversion tool?
- Do I to change my app to run the encrypted model?
- Where are the encrypted files saved?
- Which devices support Knox for Model Protection?
- Which ML file types are supported by Knox for Model Protection?
- Which operating systems (OS) support Knox ML Model Conversion Tool?
- Independent Software Vendors (DA)
- MDM Providers
- System Integrators
- VPN Providers
- Storage Providers
- API Reference
- Tools
- FAQs
- FAQ Index
- General
- What is the Samsung Knox SDK?
- Where can I obtain a white paper for Samsung Knox?
- What versions of Android support the Knox SDK?
- How can I check if my device firmware is an engineering or commercial build?
- How can I access the binaries before they are released?
- What is a deprecated API method?
- What kind of support is offered after an API is deprecated?
- Why were the API classes deprecated?
- What are the features by default set to hidden/disabled in ProKiosk mode?
- What are credentials?
- What is Knox TIMA CCM?
- Is Knox supported on other platforms, such as windows?
- Which hardware control features can be managed inside Knox Workspace, using the Knox SDK?
- Why do a few Knox SDK APIs not work on some devices?
- Can Google Play used to deploy Knox apps?
- Can I use managed configurations for Samsung Knox features?
- Can a third-party app use the Knox SDK to get LDAP information?
- How do I enable users to select a 3rd party keyboard?
- How does my device's serial number change with Knox 3.2.1?
- If I don’t use the UCM APIs of the Knox SDK, what are my options for credential storage?
- What are the changes in Samsung Calendar data sharing in Knox SDK 3.8?
- What are the alternative Google APIs for Samsung Knox Wi-fi deprecation?
- Installation
- How do I use an SDK packaged as an Eclipse IDE add-on with the Android Studio IDE?
- Is it possible to install an app silently on a device using Knox SDK?
- Why am I still able to download an app even though I have added it to blacklist with the method addAppPackageNameToBlackList(), from the Knox SDK?
- How can an app find out which apps are installed in and outside a container, using the Knox SDK?
- How can an app block the installation of a non-trusted app, using the Knox SDK?
- What does "Security policy prevents installation of this application" mean?
- Can I prevent an end user from installing certificates, with the Knox SDK?
- Does API method installApplication(String packageName) download apps from the play store and install them silently?
- Does the API method setApplicationUninstallationDisabled disable the uninstallation of apps inside the container, when using the Knox SDK?
- Why is the installCertificate API method not successfully installing a certificate on my device?
- Licensing
- How do I use license keys?
- What is the KPE Premium license key and why should I use it?
- What is the backwards compatible key?
- When do I need to use the backwards compatible key?
- Do I need to associate my app with a backwards compatible key?
- How have license key names changed?
- Which keys can be used in combination with each other?
- What is automatic license seat release?
- What are license permissions?
- What is the difference between Standard and Premium permissions?
- How do I declare permissions?
- Deprecated licenses
- Operations
- Are the Knox SDK browser policies applicable to Chrome as well?
- How can an enterprise disable roaming access over an enterprise APN, using the Knox SDK?
- Can an app using the Knox SDK clear an email signature?
- Can I add system or pre-installed app packages, using the Knox SDK, to the notification blacklist?
- Can I use Google push notifications inside a Knox Workspace container?
- Can I use SDP for an app that is outside the Knox container?
- Can multi-window mode be disabled through blocklisting, using the Knox SDK?
- Does my launcher app need a special intent to work in Kiosk mode?
- Does the API method enforceMultifactorAuthentication(), in the Knox SDK, come into effect immediately?
- How can I disable GPS on the device using the Knox SDK?
- How can I move an app from the user's personal mode to the Knox container using an API in the Knox SDK?
- How does the Knox API method EmailPolicy.setAllowEmailForwarding work?
- How does the Knox SDK method, setAllowChangeDataSyncPolicy(), sync contacts with the container so they are visible on the personal side?
- How do I disable the USB port except for charging, using the Knox SDK?
- How do I use the Knox SDK to allow or block phone numbers?
- How do I use the SDK to prevent launching the screen saver when an app is running?
- Is an APN validated when I use the Knox SDK to add it to a device?
- Is it possible to block application access to data while roaming, using the Knox SDK?
- Is there a limit to the number of applications that can be blocked or allowed using the Knox SDK?
- Is there any way to create IMAP, POP, or Exchange accounts in the emulator?
- What does the RCPPolicy.NOTIFICATIONS argument do in the API method setAllowChangeDataSyncPolicy?
- What Keystores can I use?
- What kind of phone numbers are allowed after setting setEmergencyCallOnly(true) in the Knox SDK?
- What secure hardware can I use with the UCM APIs to store credentials?
- What should I do if I find API errors?
- Why are app shortcuts not showing up in Kiosk mode for the Knox SDK?
- Why are Knox Customization policies still active on my device even after my app is uninstalled?
- Why can't you enable the camera inside a container when it is blocked in the personal space?
- Why does the allowOTAUpgrade API method, in the Knox SDK, have no effect when allowFirmwareRecovery() is set to false?
- Why does the API method call setEnableApplication(), using the Knox SDK, disable the app?
- Why does the createVpnProfile method, in the Knox SDK, fail when a Profile name has whitespace?
- Why does the SDK return a NullPointerException when I access the SMS/MMS content URI?
- Why is video recording also blocked when I use the Knox SDK to block audio recording?
- Standard features
- Can I force a device to update to the latest firmware?
- Can multi-window mode be disabled through blacklisting, using the Knox SDK?
- Does the API method setApplicationUninstallationDisabled disable the uninstallation of apps inside the container, when using the Knox SDK?
- What is the difference between hideStatusBar() and hideSystemBar() in the Knox SDK?
- What Knox SDK API methods are available to manage device firmware?
- Why do a few Knox SDK APIs not work on some devices?
- Will the legacy ELM and KLM keys still work with the Knox Platform for Enterprise (KPE) key?
- Premium features
- Customization
- Security
- As a developer, how can I access the device root key?
- Can an app prevent access to specific networks, using the Knox SDK?
- Can fingerprint be used as a substitute for other forms of screen unlock methods, when using the Knox SDK?
- Can I use the Knox SDK to disable the "Unlock Via Google" password unlock option?
- Can I use the Knox SDK to encrypt the SD card?
- Can I use the Knox SDK to modify the fingerprint passcode requirements?
- Does a Knox container enforce authentication by default?
- Do the SDP APIs support a security standard?
- How can I ensure that certificates are stored in the TIMA KeyStore, using the Knox SDK?
- How does SDP secure the cryptographic keys used for data encryption?
- How do you programmatically unlock the container after the maximum amount of failed attempts, using the Knox SDK?
- What does "Security policy prevents installation of this application" mean?
- What is the maximum length allowed for a Wi-Fi SSID, when using the Knox SDK?
- What is the scope of the setPasswordVisibilityEnabled() API method, in the Knox SDK?
- When I call the Knox SDK API method setExternalStorageEncryption, why doesn't the device prompt the user to encrypt?
- Why are HTTPS requests bypassing global proxy settings in the Knox SDK?
- Why doesn't the Knox method "isActivePasswordSufficient" check for forbidden strings?
- Why do I see "Cannot safely connect to server" when I create an email account using SSL??
- Why is my timeout of 15 minutes not working for the resetContainerPassword() method, using the Knox SDK?
- Why is the Knox API method setMaximumTimeToLock() not showing the time I configured?
- SDP
- UCM
- VPN
- VPN Provider
- Does the Knox framework store any type of data passed during profile creation?
- Do I need a license to use the Knox VPN SDK?
- How can I verify if the VPN connection that is starting belongs to the Knox profile or the default Android VPN profile?
- How do I add all apps inside AND outside the container to a VPN profile?
- How is the Knox container affected by VPN On-Premise Bypass?
- How should the network state change be handled by the VPN Client Integration?
- If the framework takes the responsibility of starting the VPN connection, and since it is MDM-controlled, how will the user be able to connect to the VPN if a time-out or networking error occurs?
- Under what circumstances does the framework trigger the start connection?
- What API do I use to create a On-Premise Bypass VPN profile?
- What is VPN On-Premise Bypass?
- When should the various Android VPN service APIs be called?
- Workspace
- Samsung DeX
- Containers
- How does an app detect if a container was created using the Knox SDK?
- How do I install the MDM agent inside the Knox container?
- I have created a "container only mode" container and I am locked inside, using the Knox SDK. How do I exit?
- Why do I get error KnoxContainerManager.ERROR_INTERNAL_ERROR(-1014) while creating a container?
- KBAs
- Knox POS SDK
- Knox Tizen SDK
- Overview
- About the SDK
- What's new
- Get started
- Tutorials
- API Reference
- Sample Apps
- FAQs
- FAQ Index
- General
- How is Tizen related to Knox?
- Which devices support the Knox Tizen SDK for Wearables?
- What version of the Tizen SDK should I install before installing the Samsung Knox Tizen SDK for Wearables?
- Should I install any extension SDK before installing the Samsung Knox Tizen SDK for Wearables?
- What are the modes in which you can use the Samsung wearable device?
- What are the supported Wi-Fi security types?
- How do I get the attestation blob?
- What is a nonce and why is it valid for a short time period?
- What is ProKiosk mode?
- Licensing
- Samsung India Identity SDK
- Overview
- About the SDK
- What's new
- Get started
- Features
- API Reference
- Sample Apps
- FAQs
- FAQ Index
- General
- Installation
- Licensing
- Usage
- How do I verify if my device supports Samsung India Identity SDK?
- Should I capture the IRIS image of one or both eyes?
- When do I use the UIDAI Staging server and UIDAI Production server?
- What are the URLs that need to be whitelisted for enterprise-managed devices using the Samsung India Identity SDK APIs?
- Who is impacted by the upgrade of the biometric public devices to registered devices?
- Is there any hardware change required to upgrade the public devices to registered devices?
- What are the application (APK) changes required to upgrade the public devices to registered devices?
- Web services
- Managed configurations
- Introduction
- Deploy managed configurations
- FAQs
- FAQ Index
- What are managed configurations?
- Why should I use managed configurations?
- How do managed configurations work?
- Can I use managed configurations for Samsung Knox features?
- What is a managed configurations XML schema file?
- Which Samsung apps support managed configurations?
- How do I deploy managed configurations on an MDM console?
- Where can I get the XML schemas for Samsung apps that support managed configurations?
- Is there sample code showing how an MDM web console can deploy an iframe that renders a managed configurations XML schema?
- What email app is preloaded on Samsung devices?
- Knox Service Plugin
- Samsung Email
Custom boot and shutdown animations
This topic describes how to replace the default boot and shutdown animations with your own animations. For example, you might replace the default animations with animations that use your company logo.
About custom animations
The general steps to create your own boot and shutdown animations are:
- Verify that your device can use custom animations
- Create sets of PNG image files for the animations
- Request QMG animations from Samsung
- Use audio with your bootup and shutdown animations
- Load your animations on devices using the Customization SDK
Custom animations
1. Verify that a device can use custom animations
To use custom boot and shutdown animations, a device must support Knox v2.5 or later. Follow these steps to check which version a device currently supports:
- Open the device’s Settings page. Scroll down and click About device.
- Scroll to the Knox version section. If the Customization SDK version is 2.5.0 or later, then the device can use custom animations.
2. Create a set of PNG files for an animation
The QMG file format is used by Samsung for the boot and shutdown animations. There are three animation files required for the boot and shutdown animations:
- bootup.qmg — an animation that plays once after the "powered by android" logo
- bootloop.qmg — an animation that continually plays after boot.qmg until booting is complete
- shutdown.qmg — an animation that plays on device shutdown
You can’t directly create QMG files. Instead, you must provide Samsung with PNG files for each animation, which are used to create QMG animations.
You must create PNG files to suit the resolution of the device that will display the animation. Each PNG file can be a maximum of 2MB in size.
You can include up to 99 images (frames) for the bootup and bootloop animations, while the shutdown animation supports a maximum of 30 images. All QMG animations play at 12 frames per second.
Name the PNG files in chronological order from start to end of animation. For example:
- bootup: bootup01.png, bootup02.png, ..., bootup99.png
- bootloop: bootloop01.png, bootloop02.png, ..., bootloop99.png
- shutdown: shutdown01.png, shutdown02.png, ..., shutdown30.png
For example, the bootup animation would start by showing bootup01.png, and continue playing each image in order, ending with bootup99.png.

Compress the PNG files for each animation into zip files that are named after the target device and animation. For example, SM950L_bootup.zip would contain bootup01.png, bootup02.png, ..., bootup40.png; assuming that the boot animation consists of 40 frames, and is intended to be the bootup animation for SM950L devices.
The maximum supported zip file size is 50 megabytes (50MB).
3. Request QMG animations from Samsung
To use custom animations on a device, Samsung must convert the PNG images to QMG animation files. To request QMG animations, go to the Knox Partner Portal support page.
Use audio with animations
You specify which audio to play with your bootup and shutdown animations when you set the animations using the Customization SDK.
The Customization SDK supports Ogg Vorbis, or Ogg, sound files. The sound file bit rate must not exceed 48 KHz. The length of the audio should not exceed the length of your animation. If you do not want any sound to play with your animations, pass a silent Ogg file when you set the animations to play for bootup and shutdown.
Load animations on a device
To install custom animations on your device, you must download the Customization SDK, and then create an app to load the animations on your device. Version 2.5 of the Customization SDK introduced the ability to load custom animations.
For the following examples, suppose that the results of your requests for bootup, bootloop, and shutdown animations are the files bootup.qmg
, bootloop.qmg
, and shutdown.qmg
, and that you have sound files that pair with the animations.
Set animations on devices running Lollipop or earlier
To set the bootup and bootloop animations on a device running Lollipop or earlier, call setBootAnimation()
with animationFile
set to
bootup.qmg
, loopFile
set to bootloop.qmg
, soundFile
set to your animation's sound file, and delay
set to the
number of milliseconds to delay playing the bootup sound. For example to set the animations with a 50 millisecond delay, call:
setBootAnimation(bootup.qmg, bootloop.qmg, bootupsound.ogg, 50);
Similarly, to set a custom shutdown animation, call setShutdownAnimation()
with animationFile
set to shutdown.qmg
, and
soundFile
set to your shutdown sound:
setShutdownAnimation(shutdown.qmg, shutdownsound.ogg);
Set animations on devices running Marshmallow or later
To set animations on devices running Marshmallow or later, you must use Knox v2.6 or later.
The methods setBootingAnimation()
and setShuttingDownAnimation()
replace
setBootAnimation()
and setShutdownAnimation()
, respectively.
You must use these new functions to comply with the Marshmallow permissions model; if you try to use the old methods on devices running Marshmallow,
you will encounter errors.
Instead of String
arguments that hold the names of the animation files, the setBootingAnimation()
and
setShuttingDownAnimation()
methods take
ParcelFileDescriptor
arguments. For example,
to build a ParcelFileDescriptor
for the bootup.qmg
animation:
String bootupAnim = getFilesDir() + "/bootup.qmg"; File bootupAnimFile = new File(bootupAnim); bootupAnimFile.setReadable(true, false); ParcelFileDescriptor bootupAnimFD = ParcelFileDescriptor.open(bootupAnimFile, ParcelFileDescriptor.MODE_READ_ONLY);
To set the bootup animation, create three instances of ParcelFileDescriptor
to point to the bootup animation, bootloop animation, and bootup sound file,
then call setBootingAnimation()
:
try { String bootupFile = getFilesDir() + "/bootup.qmg"; String bootloopFile = getFilesDir() + "/bootloop.qmg"; String soundFile = getFilesDir() + "/bootupsound.ogg"; int soundDelay = 2000; // milliseconds File fileBootup = new File(bootupFile); fileBootup.setReadable(true, false); ParcelFileDescriptor bootupFD = ParcelFileDescriptor.open(bootupFile, ParcelFileDescriptor.MODE_READ_ONLY); File fileLoop = new File(bootloopFile); fileLoop.setReadable(true, false); ParcelFileDescriptor bootloopFD = ParcelFileDescriptor.open(bootloopFile, ParcelFileDescriptor.MODE_READ_ONLY); File fileSound = new File(soundFile); fileSound.setReadable(true, false); ParcelFileDescriptor soundFD = ParcelFileDescriptor.open(soundFile, ParcelFileDescriptor.MODE_READ_ONLY); kcsm.setBootingAnimation(bootupFD, bootloopFD, soundFD, soundDelay); catch (SecurityException e) { Log.w(TAG, "Security exception: " + e);} }
Similarly, create an instance of ParcelFileDescriptor
for the shutdown animation and call setShuttingdownAnimation()
:
try { String shutdownAnim = getFilesDir() + "/animation.qmg"; String soundFile = getFilesDir() + "/sound.ogg"; File fileShutdown = new File(shutdownAnim); fileShutdown.setReadable(true, false); ParcelFileDescriptor shutdownFD = ParcelFileDescriptor.open(shutdownAnim, ParcelFileDescriptor.MODE_READ_ONLY); File fileSound = new File(soundFile); fileSound.setReadable(true, false); ParcelFileDescriptor soundFD = ParcelFileDescriptor.open(soundFile, ParcelFileDescriptor.MODE_READ_ONLY); kcsm.setShuttingDownAnimation(shutdownFD, soundFD); } catch (Exception e) { Log.w(TAG, "SecurityException:" + e); }
From the MDM, the admin can use the functions to set the custom boot and shutdown animations on enterprise devices.