My android studio code is underlined all red - java

All code in all of my android studio is all red. I think jdk is not being recognized. I recently(yesterday) updated the android studio version from 3.6X to 4.0. I did have a popup about some plugins like json viewer etc
It is not recognizing the jdk. if i select any jdk it still doesnt work
File > settings. menu does NOT open
Already reinstalled fresh android studio but still same problem

I found out the issue. I had to come out of the project and on the start screen where there are list of all projects there was red exclamation mark in red which I clicked and it showed csv plugin which was causing errors in ide. i disabled that and restarted and all fixed.

Related

the run/debug/device selection in android studio are grayed out

for context i'm new to android studio
so basically i wanted to learn flutter, so i installed it and installed android studio as well
but after i configured everything (SDK path and environment variables included) it still won't run any apps and the whole area is grayed out as you can see in the image i linked.
i have tried to make sure that my sdk is correct and that my flutter permessions are all allowed.
i also tried reinstalling the whole thing but nothing happened.
android studio run bar gray and wont work
okay guys i fixed it thank you all for the help
for any future readers, hi from past :D
i went into the plugin sections in the settings and made sure all my installed plugins were up to date
i then installed the flutter plugin and restarted the IDE. Fixed everything.

Android studio does not open

2021-04-11 Installed the newest version of android studio. When trying to start it splash screen apears loads up and then empty screen appears and after ten seconds it closes. Android studio icon disappears from the taskbar. I can see that android is started in task manager. P.S. Closing it and trying to run it again or running it as Administrator does not work.
I ran into the same problem upon upgrading my android studio. Something seems to be wrong with the process of importing settings and configurations from the old version.
Let's move the old configuration files to another backup location to see if it works. (we will not delete it, because who knows, maybe this is not the solution:) ). check these locations based on your android studio version :
for v 4.0 and upper:
C:\Users\<your user name>\AppData\Roaming\Google\AndroidStudio 4.x
for lower than 4.0 :
C:\Users\<yourUserName>\.AndroidStudio
Just move the folder to another location and start the Android studio again.
If everything is as expected, a dialog should pop up asking for importing settings and configuration:
Select 'do not import', and you are good to go.

Eclipse does not work after update through Android SDK Manager

I have just updated my eclipse through Android SDK Manager, my eclipse pop out and error about the Android SDK.
This Android SDK requires Android Developer Toolkit version 23.0.0 or above.
Current version is 22.6.2.v201403212031-1085508
When I pressed the button "Check for Updates", the result from eclipse is "No Updates were found."
I am sure that my Android SDK should be 23.0.0 above.
All my project listed in the left corner of above picture contains errors.
I have studied this thread and I found that the "Java build path" was "Unable to get system liberary for the project"
The project was not built since its build path is incomplete
Whenever I tried to add the JRE System Library, it failed beacause of "Could not write file: C:\Users\Admin\workspace\ICEAPP(20140819_uc).classpath."
Can anyone give me so help?
Update the ADT-Plugin in eclipse (Help > Check for updates)
You have to remove the whole installation and reinstall everything again. This update seems to fail always. But reinstall works for all of this issues. With the new version 23. It seems there is a big compatibillity problem unsolved yet.
Check for updated fails but eclipse say it need one update. Also SDK Manager seems to be up to date.
Anyway, even if you get ot working, there still are problems for example with implementation of google play service.
Had a lot of issues by myself and others to, but reinstall solved it

Android SDK eclipse installation not working properly

When I install the android SDK from here http://developer.android.com/sdk/index.html
my file at the time was like adt-bundle-windows-x86_64-20140624.zip. When I ran it, the eclipse looked very different. The loading screen showed Juno instead of the android loading screen. The icon on the bottom task toolbar (windows 7) was a unknown program icon and not the eclipse icon. When it opened, it looks like this image below.
If I try to create a new android activity file, after I click finish, I expect the file to be created, but nothing happens. Also if I go to the xml layout file and go to the gui explorer, I get a bunch of errors saying some widgets didn't load. And then it doesn't show the preview.
Some things work like intellisense and being able to run app on phone.
Im not sure if this has to do with corrupted preferences, so I deleted the files in here
Eclipse Workspace\.metadata\.plugins\org.eclipse.core.runtime, but it didn't help.
Does anyone know whats wrong and how to fix it?
Thanks.
I also installed the same version adt-bundle-windows-x86_64-20140624.zip last week. It worked fine for the most part. The different icon and splash screen for Eclipse is to be expected. There were some oddities, like the link to SDK manager still pointed to my previous ADT installation.

Android:Error an Exclamation mark in my project how to resolve it

i got a pop up when i started my android eclipse stating that there is a new version which has to be upgraded for 22.6.2 version but your sdk is in 22.3 version even i had error that sdk is not installed in your eclipse so i went to help-> install software added repository then restarted my eclipse.
after that i added my code as usual to start coding my project but i got an exclamatory mark near my project when i compile dialog box appears as you have error in your project
Exclamatory mark shown in image
Next i went to show view -> problems . to check the problems i got an error stating about Android dependencies
next i went to quick fix the project but dialog box appeared
after fixing i got an error in jar file itself as shown below
in this we can check the errors
i am not able to resolve the error in the jar file can anyone help to resolve it
thanks for your time and help in advance
You need to reference AppCompat.
Download the support library under extras from Android sdk Manager.
AppCompat is located # android sdk/extras/android/support/v7/appcompat/
Import the library project into workspace.
Select File > Import.
Select Existing Android Code Into Workspace and click Next. Browse ( android sdk/extras/android/support/v7/appcompat/) and click finish
Right click on your project. Goto properties. Android. Add. Browse and Reference AppCOmpat.
Done.
Snaps
Library project imported to eclipse
Referenced AppCompat
You can try thus. Such as
You have updated the android sdk but not updated the adt to match with it.
You can update the adt from here
You might need to update the software source for your adt update
Go to eclipse > help > Check for updates.
It should list the latest update of adt. If it is not working try this
go to eclipse > help > Install new software
Click on add
add this url : update adt dynamically
give it any name.
It will list the updates available- which should ideally be adt 20.xx
Eclipse will restart and hopefully everything should work fine for you.

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