External Display Support - Google Pixel 4 XL Questions & Answers

Are there any ROMs/kernels that enable this feature?
I remember reading a while ago at the hardware was capable of it, but Google had disabled it via software.
I've done a bit of searching, but haven't seen anything specifically mention it.

If you have Linux, you are able to copy the screen via usb-connection, if you enable the ADB debugging on your phone.:
GitHub - Genymobile/scrcpy: Display and control your Android device
Display and control your Android device. Contribute to Genymobile/scrcpy development by creating an account on GitHub.
github.com

Related

More Cupcake questions

"cupcake" development branch
A link to this was posted on the G1-Hackers mailing list. I haven't seen it here yet so I figured I would share. You can find the original post at http://source.android.com/roadmap/cupcake.
---------------------------------------------------------------------------------
"cupcake" development branch
From http://source.android.com/roadmap:
During Android's transition to anopen-source project, some development has continued to happen in aprivate branch. We are working to move the rest of these changes intothe open as soon as possible, and all future open-source work willhappen in the public git repositories. All changes that have alreadybeen submitted to the public repositories will be merged into the newercode base, so nothing should be lost.
The Android team has begun pushing these changes to the public git repositories, in the "cupcake" branch.
About this code drop:
The "cupcake" branch is a read-only mirror of the private Android branch.cupcake is still very much a work in progress. It is a development branch, not a release.
Thefirst drop is a large roll-up commit of all of the changes sincerelease-1.0. We will transition to regular, smaller roll-up drops,ultimately pushing individual commits.The cupcake branch willbe merged into the master branch, so that all of the public patches canbe used with the new code base. None of the commits in the publicrepositories will be lost, unless they no longer make sense or areobsoleted by the new code base. Due to the United States' holidayseason, though, this may not be finished until early January.
To check out the cupcake branch:mkdir cupcake # create a new client directory
cd cupcake
repo init -u git:/android.git.kernel.org/platform/manifest.git -b cupcake
repo sync
Notable changes introduced in cupcake:
Applications
MMS
New features
Save attachments from MMS.
Significant bug fixes
Faster conversation list scrolling
Email
Significant bug fixes
Accounts that were marked "never check" are not auto-checked.
Date & time displayed using user preference (e.g. 24 hr vs. AM/PM).
cc: displayed in message view.
Relaxed POP3 parser rules so it works with non-compliant email servers.
Password quoting bugs in IMAP. Makes it work for users with funny chars in their password (e.g. spaces).
Various sources of errors in auto & manual account setup.
Improvements on how we report various connection errors. Makes it much easier for user to diagnose failed account setups.
New-mail notifications for POP3 accounts.
Properly recover from POP3 connection failures, so that the next connection has a chance of working properly.
Remove automatic accounts setup entries that were broken or nottestable. Minor fixes to a few of the remaining entries. Improvementsto warning dialogs used for a few special cases.
New accounts are now set to check every 15 minutes (instead of defaulting to "never").
Fixed a bug causing approximately 1 in 25 outbound messages to freezeup the IMAP connection (to a Gmail based server) when transferred tothe Sent folder. This broke the entire connection so new messagescould not be downloaded either.
Unit test framework so Email can be extended & tested more reliably.
Fix IMAP manually-created accounts so message delete works properly.
Alarm Clock
Significant bug fixes
Alert now plays audio/vibe directly, rather than through AlarmManager.AlarmClock alert starts playing audio/vibe in its IntentReceiver,rather than on activity start. These changes should prevent alarms frombeing blocked by modal dialogs.
Package Installer
Significant bug fixes
Bugs related to replacing existing applications.
Settings
New features
New menu option to list running processes in Settings->ManageApplications.
Music
New features
Music playback fades in after suspending for phone call.New media search intent allows for 3rd party apps to launch or respondto media searches based on artist, album, or title.
Affects: MusicPlayer, YouTube, Browser applications.
Browser
New features
Updated WebKit browser core, synced with Nov 2008 WebKit version.
Support for new, optimized JavaScript engine (SquirrelFish).
Copy/ paste is enabled in the browser. To copy with touch, press and holdthe shift key and select the text. Releasing the shift key or endingthe touch drag copies the text. To copy with the trackball, press andhold the shift key, move the cursor to the selection start, click thetrackball, and move the trackball to the extend the selection.Releasing the shift key, or clicking the trackball a second time,copies the text.
Find is enabled in the browser. To find text, choose it from the menu and type the text to find.
Drawinghas been sped up substantially by supporting partial contentinvalidates and partial screen invalidates. Pages with animations are5x faster.
VoiceDialer
New features
VoiceDialer supports 'open app' command
Camera/Gallery
New features
Video recorder mode
Share intent for videos
Video thumbnailsLocal file playback
Download manager
New features
Support for HTTP codes 301, 302, 303 and 307 (redirects).
HTTP code 503 is now handled, with support for retry-after in delay-seconds.
Downloads that were cleanly interrupted are now resumed instead of failing.
Applications can now pause their downloads.
Retry delays are now randomized.
Connectivity is now checked on all interfaces.
Downloads with invalid characters in file name can now be saved.
"cupcake" development branch continued
Framework
New features
Support of touch events in WebView.New JavaScript engine (SquirrelFish) in WebView.
Input method framework, for soft keyboards and other on-screen inputmethods. Includes new APIs for applications to interact with inputmethods, and the ability for third party developers to write their owninput methods.
Access to the raw audio data for playback and recording from application code.
New PendingIntent.FLAG_UPDATE_CURRENT option.
Support for top-level boolean resources.
Tactile feedback to the LockPatternView. Tactile feedback can beenabled/disabled by going to Settings > Security & location andthen checking/unchecking "Use tactile feedback". Note that this can beused independently of the visual feedback of the lines ("Use visiblepattern"). Thus it gives users a middle ground between showing thelines on the screen and having no feedback at all.
PackageManager changes to support un-installation ofpartially installed applications. Added new flagPackageManager.GET_UNINSTALLED_PACKAGES to include partially installedapps in all relevant PackageManager api's. ManageApplications screennow lists such partially installed apps and the user can uninstallthese applications completely.
Support third party updates of system applications. Newmenu options in Settings->ManageApplications to list updated systemapplications.
Framework support to list current running processes. New API in ActivityManager.
Framework feature to declare required configurations by applications.New manifest attribute uses-configuration in android manifest.
Hardware accelerated video encode (video recorder) in opencore.
Simplified SREC speech recognition API available.
Streaming audio I/O for applications.
Significant bug fixes
Fixed issues with saving state in the view hierarchy, so that you canproperly subclass from something like TextView and create your ownstate that inherits from that provided by TextView.
TextView now implements onKeyMultiple(), so that flinging the trackballwill result in accelerated scrolling. This required some changes tomovement methods, and included some improvements to the accelerationcomputed when flinging.
Framework bug fixes in PackageManager to share/un-share permissions for applications with shared uid's.Significant rework of Settings->ManageApplications Performance and UI enhancements.
Anumber of settings in android.provider.Settings.System were moved toandroid.provider.Settings.Secure. Only system software can modify thesesettings. Additionally, a new permission, WRITE_SECURE_SETTINGS, isrequired to access these settings. The old constants in Settings.Systemhave been deprecated. It is possible to read settings values viaSettings.System using the deprecated constants. However, attempts tomodify these settings via Settings.System will result in a log messageand the setting value will be left unchanged.Many bug fixes in the media framework
Bluetooth
New features
Support for A2DP & AVRCP profiles.
Significant bug fixes
First connection after pairing always fails on many carkits.
Mini Cooper and some late model BMW cars fail to use Bluetooth or take 2 minutes for Phone Book transfer.
System software
New features
New kernel based on Linux 2.6.27.
Improvements to the wakelock API.
Work to transition to the USB Gadget Framework underway.
Basic x86 support.
Radio & Telephony
New features
SIM Application Toolkit 1.0.
Green CALL button is no longer a shortcut for "add a new call". Thishas been a rarely used feature and confusing if triggered accidentally.
Longer in-call screen timeout when using the speakerphone.
"Show dialpad" / "Hide dialpad" item added to the in-call menu, to make it easier to discover the DTMF dialpad.
Significant bug fixes
An obscure case where the Phone UI could cause the device to not go tosleep on its own. This would happen if user bails out of the in-callscreen by hitting HOME, followed by the call disconnecting remotely. Don't allow a single tap to open the in-call dialpad. Itis now required to touch and drag it. This makes it much harder toaccidentally open the dialpad by touching the screen with your face.
Developer Tools
New features
Enable handset manufacturers to extend the Android SDK with add-ons. SDK add-ons will include:
systemlibraries to let developers use additional APIs provided by handsetmanufacturers or from other 3rd party vendors that handsetmanufacturers chose to include
emulator system images,skins, and hardware configuration to let developers test theirapplications on their Android implementation
This is work-in-progress. Please note that the latest Android SDK (Android 1.0 SDK, Release 2) is not compatible with the SDKplugin in the new branch, please use ADT 0.8.0. SDK add-on support is planned for future SDK release.
Build System
New features
The functions in build/envsetup.sh should be much more useful
nice, this is some secret undercover stuff that is much needed!! you all rock!
hbguy
I'm wondering would it be available to install for non-jailbraked phone?
worry said:
I'm wondering would it be available to install for non-jailbraked phone?
Click to expand...
Click to collapse
We are talking about Android source code here. It would need to be compiled appropriately to even flash to any phone. Your phone would still subject it to the same key test before it will flash it. So, No this won't work... Yet. Hopefully we will find a way to sign these images with the OTA keys instead of just test keys as we do now.
"Chicken Soups for Andy Phones"
Yes, I am aware of you should compile it first.
So you are saying, since it is not officially signed by google, you'll be able to install it only on dev or has-proper-boot-image phones?
wait, how do we get all these updates in the future though? sdk?
also what you mean as finding a way to sign these images with ota keys instead of just test key? meaning with jf's mod rc30 we could get these update?
hbguy
man, well these were a few of the things that i wanted to see changed its good that they are keeping in touch with the ppl runnin the app. this is very compelling information. can i suggest and addendum to the title, something alluding to the "update" nature of this dev team. i dont think theres a date, but ill def be willing to pick a G1 back up for that, esp if they managed to make a few of the processes faster.
hbguy said:
wait, how do we get all these updates in the future though? sdk?
also what you mean as finding a way to sign these images with ota keys instead of just test key? meaning with jf's mod rc30 we could get these update?
hbguy
Click to expand...
Click to collapse
Cupcake can't be built to run on Dream hardware yet. Not to worry as an OTA RC with the cupcake code drops should be available by year's end or early Jan 09.
Support third party updates of system applications. New menu options in Settings->ManageApplications to list updated system applications.
Click to expand...
Click to collapse
I haven't had a chance to look into it too much but, depending on the applications and files made accessible, this looks very promising. Things like the autorotating browser, maybe even skinning, could potentially be "legitimized" and no longer require root.
so how would one go about compiling to run on the dream?
korndub said:
so how would one go about compiling to run on the dream?
Click to expand...
Click to collapse
Right now...... You wait. There isn't 100% of the code here. Nothing specific to the dream hardware etc. I am hopeful we will be seeing things come soon though.
As far as what I meant about the keys... Right now in order to be able to flash an update that is signed with test keys, aka the keys we have right now, you need to use an exploit to gain root access and modify the keys the system looks for when updating. There are two possible ways that I see to get OTA RC30 flashed with with an unofficial image. The first way is for some ingenious person to find an exploit that can be used to obtain root again and therefore be able to change the keys the system looks for. The other option would be for someone to come up with a way to sign the image with the OTA keys.
kronarq said:
Right now...... You wait. There isn't 100% of the code here. Nothing specific to the dream hardware etc. I am hopeful we will be seeing things come soon though.
As far as what I meant about the keys... Right now in order to be able to flash an update that is signed with test keys, aka the keys we have right now, you need to use an exploit to gain root access and modify the keys the system looks for when updating. There are two possible ways that I see to get OTA RC30 flashed with with an unofficial image. The first way is for some ingenious person to find an exploit that can be used to obtain root again and therefore be able to change the keys the system looks for. The other option would be for someone to come up with a way to sign the image with the OTA keys.
Click to expand...
Click to collapse
kronarq is there a way to merge the existing source with the cupcake to fill in the parts that are missing?
Anyone else having problems pulling the source with repo?
hbguy said:
nice, this is some secret undercover stuff that is much needed!! you all rock!
hbguy
Click to expand...
Click to collapse
This was not "undercover" work. Google wanted to be able to work on stuff, yet release the G1 with a semi-stable firmware.
kronarq said:
We are talking about Android source code here. It would need to be compiled appropriately to even flash to any phone. Your phone would still subject it to the same key test before it will flash it. So, No this won't work... Yet. Hopefully we will find a way to sign these images with the OTA keys instead of just test keys as we do now.
Click to expand...
Click to collapse
This won't be the case. This is an official Google release, meaning when they merge them together in January, they will release an OTA update with all of these features.
I'm hoping there will be an OTA update with all these new goodies, but just because google is rolling "cupcake" into the open-source project, that does not mean that it will get rolled out to our G1's. That's up to T-Mobile and HTC. Let's just keep our fingers crossed.
Ok, maybe I'm missing something, but where are people getting the idea that this is not dream specific? From how I read it these are all things that are being built into the main source and as such will be compiled as an ota as other updates have been done in the past. Someone enlighten me here as I'm just not seeing the "specific" requirements people are putting on this? I'm no coder, but it doesn't look like anything more then just enabling what was already there or planned on being there. [/rant?]
MMTest97 said:
Ok, maybe I'm missing something, but where are people getting the idea that this is not dream specific? From how I read it these are all things that are being built into the main source and as such will be compiled as an ota as other updates have been done in the past. Someone enlighten me here as I'm just not seeing the "specific" requirements people are putting on this? I'm no coder, but it doesn't look like anything more then just enabling what was already there or planned on being there. [/rant?]
Click to expand...
Click to collapse
Agreed... everything that is dream specific is either on the android git repository or can be extracted from stock G1 Firmware
MMTest97 said:
Ok, maybe I'm missing something, but where are people getting the idea that this is not dream specific? From how I read it these are all things that are being built into the main source and as such will be compiled as an ota as other updates have been done in the past. Someone enlighten me here as I'm just not seeing the "specific" requirements people are putting on this? I'm no coder, but it doesn't look like anything more then just enabling what was already there or planned on being there. [/rant?]
Click to expand...
Click to collapse
Everything in the open source repository should be non-device specific (with the obvious exception of stuff like binary drivers). The repo will build an emulator image. To build for dream, there are some additional instructions. However the cupcake branch cannot be built for Dream at this time, so it is definitely not Dream-specific.
Datruesurfer said:
Agreed... everything that is dream specific is either on the android git repository or can be extracted from stock G1 Firmware
Click to expand...
Click to collapse
The differences between G1 and the repo extend beyond just Google-proprietary apps. There are subtle differences in the framework too.

Android developers: beam-assist auto focusing

Question for fellow Android developers:
the standard Android API does not offer access to the "beam-assisted auto focusing functionality" of the camera. I am wondering how we can access that part of the function via android SDK or NDK?
I am looking through the source code of the camera, seems lots of .C files in the Kernel section relate to camera operation. Is that the only good starting point?
thanks so much for any input!!!

CCwGT Sideloaded app security for supervised accounts

Hi -
I'm using Android Studio to build an Android app that runs on a CCwGT (Chromecast with GoogleTV). I've been able to setup developer mode, and I have sideloaded my APK. Initially it didn't show in the default launcher, but I fixed that by setting up the project for "Android TV" in Android Studio.
Anyway I have multiple APK's from various sources (e.g. VLC) and I have NO problem assigning VLC to the supervised kids accounts I have set up. The problem is that I cannot do it for my own sideloaded APK. I'm not sure if I am missing some sort of configuration in the Manifest.xml or something else. The application is simply not visible in the list of apps, therefore I am unable to select it.
Since I am not a professional Android developer I am struggling to find information on how to solve this. Can anybody shed some light on how this is supposed to work? Could it be related to topics like content filtering or perhaps family sharing? Any hints or tips into the right direction are very appreciated.
I haven't setup a ADB yet since I don't have a USB3 hub with passthrough.
Thank you in advance.
You don't need USB for ADB -- it runs over network.
adb connect ip.add.re.ss

How can I give my Sony Xperia 1 II a proper PC/Desktop Mode?

I have a docking device that works wonders, but this phone (despite all of it's qualities) doesn't have a proper DeX-like feature.
I tried turning "Force Desktop Mode" on in the Developer options, and I tried downloading the Taskbar from Google Play.
But it's all shoddy and buggy at best. Barely functional at worst.
Can anybody point me to a guide that tells me how to give non-Samsung devices a functional DeX mode?
Did you try Sentio?
Gigio755 said:
Did you try Sentio?
Click to expand...
Click to collapse
Yes...
It's pretty buggy. When I tried docking it to the TV using the "Experimental" Desktop feature, It only opens the launcher on the phone screen, and not the second one.
I tried using the SecondScreen app, but it requires me to root the phone for the more "advanced" features.
To sum it up... I'm stuck.
Taskbar?
GitHub - farmerbb/Taskbar: PC-style productivity for Android
PC-style productivity for Android. Contribute to farmerbb/Taskbar development by creating an account on GitHub.
github.com

Advice for making a Magisk module as a beginner?

I've been using Magisk for a long time so I'd like to try my hand at making something of my own. I'd like to make a module for LineageOS 18.1 which creates a quick settings tile that toggles a setting from developer options. My only programming knowledge is from a java class I took in high school a few years ago.
How should I go about this project? What do I need, how should I make it, etc...
What modifications to the project would I have to make to submit it to LineageOS Gerrit?
ethansoars said:
I've been using Magisk for a long time so I'd like to try my hand at making something of my own. I'd like to make a module for LineageOS 18.1 which creates a quick settings tile that toggles a setting from developer options. My only programming knowledge is from a java class I took in high school a few years ago.
How should I go about this project? What do I need, how should I make it, etc...
What modifications to the project would I have to make to submit it to LineageOS Gerrit?
Click to expand...
Click to collapse
I cant help you on the programming side of things - a google of "how to program a quick settings tile android" will get you close
A quick settings tile would normally be in the form of an app afaik, and require installing the Android SDK to get started, and is not something compatible with a magisk module
Also magisk modules cant be submitted to LineageOS, its nothing to do with them and not in any way mergeable with their code
I doubt you would get LineageOS to adopt your custom tile unless it did something that benefitted all users, they are pretty strict on their code, but you can always ask or submit and try your luck, but individual niche things are unlikely to get any traction
Prolly better off approaching as a standalone app and release if it does something you feel is widely useful....
Hope this helps
If you do want to do something in the form of a magisk module, heres what i recommend as a way of developing and packaging it...
GitHub - Zackptg5/MMT-Extended: Magisk Module Template Extended
Magisk Module Template Extended. Contribute to Zackptg5/MMT-Extended development by creating an account on GitHub.
github.com
and documentation:
Home
Magisk Module Template Extended. Contribute to Zackptg5/MMT-Extended development by creating an account on GitHub.
github.com

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