[Q] Run ADB Command from Home Screen Shortcut - Android Q&A, Help & Troubleshooting

The backstory first:
I have a Nexus 10. I like to plug it into my TV via HDMI and watch videos or play games, or what have you. Since the aspect ratio doesn't match the TV I get black bars on the sides. In a command line, one can type
Code:
am display-size 2560x1440
to change the resolution of the screen and get rid of the black bars on the TV completely (at the cost of adding black bars on the top and bottom of the tablet.)
Code:
am display-size reset
Sets it back to normal.
Rather than typing this into a terminal /every time/ I want to do this, is there a simple widget or app that will let me set up a shortcut on the homescreen that I can just click on to toggle instead?

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There isn't a utility that does that, but i made one in dos for you. too lazy to upload, will give you the code.
Make a batch file by making a new file in notepad and saving it as a .bat extension for eg. filename.bat
inside the file, copy-paste this code :
Code:
@echo off
ECHO Please enter x for screen resolution of 2560x1440 and enter y to get back to default resolution
SET /P res=Please enter x or y:
IF "%res%"=="x" (
adb shell am display-size 2560x1440 ) ELSE (
adb shell am display-size reset )
ECHO Done!
Hit save!
if you want to set your resolution to 2560x1440 , type x and hit enter. if you want it set to normal hit y.
save this file and adb in the same folder.
I haven't tested it, so test it and tell me if it worked :good:

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Lazz said:
The backstory first:
I have a Nexus 10. I like to plug it into my TV via HDMI and watch videos or play games, or what have you. Since the aspect ratio doesn't match the TV I get black bars on the sides. In a command line, one can type
Code:
am display-size 2560x1440
to change the resolution of the screen and get rid of the black bars on the TV completely (at the cost of adding black bars on the top and bottom of the tablet.)
Code:
am display-size reset
Sets it back to normal.
Rather than typing this into a terminal /every time/ I want to do this, is there a simple widget or app that will let me set up a shortcut on the homescreen that I can just click on to toggle instead?
Click to expand...
Click to collapse
For these kind of things:
Script Manager can create widgets from scripts.

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TechMasta said:
There isn't a utility that does that, but i made one in dos for you. too lazy to upload, will give you the code.
Make a batch file by making a new file in notepad and saving it as a .bat extension for eg. filename.bat
I haven't tested it, so test it and tell me if it worked :good:
Click to expand...
Click to collapse
I never thought of using a batch file on a computer to do this. I have one hooked up near my TV, I could just plug the tablet in and set the batch file to a hotkey and it would be just as good as running from the tablet itself.
It seems "am" needs root permissions for some reason
It throws:
Code:
java.lang.SecurityException: Neither user 2000 nor current process has android.permission.WAKE_LOCK.
I tried to modify the code to get root access but then it gets stuck in adb shell. perhaps there is a way to run more than one shell command per line?
"am" does work from adb shell when it has root permission. This is strange since I don't need root permission from the terminal emulator on the tablet itself. Maybe there is something corny going on with my tablet.
Zatta said:
For these kind of things:
<URL> can create widgets from scripts.
Click to expand...
Click to collapse
This looks like it would work as well, except for some reason the Play Store says it isn't compatible. Perhaps I can download it on my phone, and then copy it to the Nexus 10.
Thank you both for your assistance!
We'll get this going somehow!