How to screencap the smaller display of Samsung Galaxy Fold using ADB 'screencap' command?

Question

I'm trying to take a screenshot of Samsung Galaxy Fold's smaller display.



I use



shell screencap -p /sdcard/testss1.png


but it only captures the main display ― which is off ― and gets a black image.



How to change the display used for capturing?


— Pablo | Sources

Answer

The screencap command can be configured to capture a specific display using the option -d.




-d: specify the physical display ID to capture.
See dumpsys SurfaceFlinger --display-id for valid display IDs.




The output of dumpsys SurfaceFlinger --display-id is a bit longer, therefore you can filter out the display ids:



dumpsys SurfaceFlinger --display-id | grep display_id


On my device I only have one display with display_id=0.



Therefore the final command looks like this (just replace display_id):



shell screencap -d <display_id> -p /sdcard/testss1.png

— Robert | Sources

Q & A

Not yet getting Android Nougat update
Turning on hotspot automatically turns off my Wi-fi in my Moto g4 plus
Will I loose manufacturer updates if I root my phone
Helium won't restore SMS
How to Control Volume Changes in Smaller Steps and in Lower Region?
Verifying device integrity. Galaxy Tab S2 9.7"
Stream audio to windows10 through USB
Is kernel mode of operating system and root permissions in android same thing?
What is Android 3DTourViewer?
how to work around "Your device does not qualify for bootloader unlocking
Can I make a flashable ZIP containing one or more APKs
New Note 7 Rebooted and Erased All Data on First Time Insert of SIM card. Why?
is nexus 6 still a good purchase? is nexus 6 at its end of life?
Flash Android Nougat On Rooted S7
How to block other apps to Open .Only My app will be open when android is strated
Can I Change My Device Info For Reach Another Version of an App On Play Store?
Android shuts down when unplugged
Receiving App Notifications from apps that are blocked by a network firewall
Android 6.0: Where are the cookies of a native Android browser stored?
How to Save Website Pages for Offline access in Firefox/...?

Topics

2D Engines   3D Engines   9-Patch   Action Bars   Activities   ADB   Advertisements   Analytics   Animations   ANR   AOP   API   APK   APT   Architecture   Audio   Autocomplete   Background Processing   Backward Compatibility   Badges   Bar Codes   Benchmarking   Bitmaps   Bluetooth   Blur Effects   Bread Crumbs   BRMS   Browser Extensions   Build Systems   Bundles   Buttons   Caching   Camera   Canvas   Cards   Carousels   Changelog   Checkboxes   Cloud Storages   Color Analysis   Color Pickers   Colors   Comet/Push   Compass Sensors   Conferences   Content Providers   Continuous Integration   Crash Reports   Credit Cards   Credits   CSV   Curl/Flip   Data Binding   Data Generators   Data Structures   Database   Database Browsers   Date &   Debugging   Decompilers   Deep Links   Dependency Injections   Design   Design Patterns   Dex   Dialogs   Distributed Computing   Distribution Platforms   Download Managers   Drawables   Emoji   Emulators   EPUB   Equalizers &   Event Buses   Exception Handling   Face Recognition   Feedback &   File System   File/Directory   Fingerprint   Floating Action   Fonts   Forms   Fragments   FRP   FSM   Functional Programming   Gamepads   Games   Geocaching   Gestures   GIF   Glow Pad   Gradle Plugins   Graphics   Grid Views   Highlighting   HTML   HTTP Mocking   Icons   IDE   IDE Plugins   Image Croppers   Image Loaders   Image Pickers   Image Processing   Image Views   Instrumentation   Intents   Job Schedulers   JSON   Keyboard   Kotlin   Layouts   Library Demos   List View   List Views   Localization   Location   Lock Patterns   Logcat   Logging   Mails   Maps   Markdown   Mathematics   Maven Plugins   MBaaS   Media   Menus   Messaging   MIME   Mobile Web   Native Image   Navigation   NDK   Networking   NFC   NoSQL   Number Pickers   OAuth   Object Mocking   OCR Engines   OpenGL   ORM   Other Pickers   Parallax List   Parcelables   Particle Systems   Password Inputs   PDF   Permissions   Physics Engines   Platforms   Plugin Frameworks   Preferences   Progress Indicators   ProGuard   Properties   Protocol Buffer   Pull To   Purchases   Push/Pull   QR Codes   Quick Return   Radio Buttons   Range Bars   Ratings   Recycler Views   Resources   REST   Ripple Effects   RSS   Screenshots   Scripting   Scroll Views   SDK   Search Inputs   Security   Sensors   Services   Showcase Views   Signatures   Sliding Panels   Snackbars   SOAP   Social Networks   Spannable   Spinners   Splash Screens   SSH   Static Analysis   Status Bars   Styling   SVG   System   Tags   Task Managers   TDD &   Template Engines   Testing   Testing Tools   Text Formatting   Text Views   Text Watchers   Text-to   Toasts   Toolkits For   Tools   Tooltips   Trainings   TV   Twitter   Updaters   USB   User Stories   Utils   Validation   Video   View Adapters   View Pagers   Views   Watch Face   Wearable Data   Wearables   Weather   Web Tools   Web Views   WebRTC   WebSockets   Wheel Widgets   Wi-Fi   Widgets   Windows   Wizards   XML   XMPP   YAML   ZIP Codes