visual layout editor does not allow drag&drop - android-studio

I'am a newby in android studio and learning a lot, but now have a problem where i cannot seem to find the answer to.
In android studio you can visualy drag&drop your screen.
I have seen it can do al lot (although you sometimes need the xml) but for me it is not working at all.
I mean i cannot drag&drop any widgets on the screen at all.
Tried changing the theme: no help (really tried a lot of them)
Tried a complete new project: same story
Tried other APK verion: same story
Tried Invalidatd caches / restart: no help
Even with a new project (EmptyActivity) it add's a android.support.v4.widget.NestedScrollView and then gives error's on that
(Failed to find style 'coordinatorLayoutStyle' in current theme).
It also gives an error on layout_height/layout_with not being there. But they are there for each widget.
Please do not missunderstand: when i execute the project i runs just fine (both on phone and emulator) but the visual builder for the screen.....:-(
Does somebody knows how to solve this.
If more info is needed please ask.
Any help is more than welcome.

There are several things that could be causing this:
Your caches could be messed up. Try going to
File > Invalidate Caches / Restart ... (I know that you already tried this, but posting for future views.)
Also, make sure that you don't have Drag-n-Drop with ALT pressed only checked in your Settings (Appearance & Behavior - Appearance).
Finally, in a default project created in Android Studio, there are two XML files created for each layout. For example, content_main.xml is embedded within activity_main.xml. Make sure that you are using content_main.xml for your design work.

In the end i fixed it by changing the SDK version in de gradle file.
still do not understand why it was wrong as studio genereded it that way but now it works so.... for me: case closed.

Related

Why does the syntax color code of Visual Studio Code act weird on me?

I am using Visual Studio Code 2022:
Information on my VS code version
Up until now, I have had the colors appearing correctly in the default theme of VS code Dark+ (default dark).
I am currently using it for unity, so for C#, but sometimes use it for HTML CSS.
Those are the extensions that I have currently installed:
List of Extensions
I just noticed recently that right after clicking on a different .CS file, the color code doesn't work anymore. I can't figure out why, but it's super annoying. Classes used to be green, and their names used to be blue. Now, they are All blue.
Here is what it looks like when things are working fine:
Working Fine
And this is what it looks like as soon as I click on another .CS file in the file explorer:
Not Working
The only way to get my colors back, is to close VS code and re-open it.. but it's useless because I am eventually going to select a different .CS file in the explorer, and the problem arises again.
I have been coding for only 4 months, so forgive me if this is actually something simple, but I could not find the exact same issue somewhere else.
Thank you!

Content_Main and Activity_Main in Android Studio 1.4: If I put a button in activity_main, but not content_main, will the java file know about it?

I'm a beginner to android but have done a little with an older version of Android Studio, and in the new version I'm having a lot of trouble getting the java file to find buttons or ImageViews. I'm not sure if it's related to the content_main vs activity_main thing. I'm having trouble finding any answers as to how this works on Google, so I'm just starting here, I want to put a button on the main page of my app and have the java file that correlates to the XML file find it. How do I do this?
Answers online are very vague to me, things like "activity_main.xml will determine how the look of the main activity should be. And on the other hand content_main.xml will determine the contents in the activity_main.xml" does not mean anything to me. Please tell me where to put the button!
If you are adding a button in activity_main rather than content_main it cannot be recognized by your Java file. Not only that is will even not be visible on your app.

Specflow Options in context menu is greyed out in Visual studio

I am using Specflow to write test in BDD style format. Unfortunately today morning in my visual studio, I am not able to see the options to create the step files. Even F12 is not working. Those statements which do not have a step file definition will be in Purple previously. But today it is in Black even though there is no step file definition.
Please see attachment
Could anyone please help me as what I am missing
Thanks
sounds to me like you have not got the Specflow visual studio extension installed.
Are you on the same machine? Have you disabled extensions?
I am not sure what exactly you are looking for. If possible please post complete image of the right click options you are getting.
Scenario steps which do not have step defs will be in pink colour. Once step defs are coded colour will change to black colour.
Image link: http://i61.tinypic.com/2whgjdd.png
If you want to create step def for steps, right click on the step and find Generate Step Definitions or Go To Step Definition options at the bottom. Click any of the option to create step defs.
Image link: http://i59.tinypic.com/2cdihqr.png
Note: Unfortunately I am unable to post images here due to lack of reputation. I am adding links to view the images.
I tried all options which are listed above and some not listed. The last option worked - uninstall and reinstall visual studio.
I faced the same issue in Visual Studio ultimate 2013 as well and it annoyingly took 3-4 hours to resolve it.
I followed the steps mentioned here - http://www.specflow.org/documentation/Troubleshooting-Visual-Studio-Integration/
and tried to delete the "specflow-stepmap-SpecFlowProject-607539109-73a67da9-ef3b-45fd-9a24-6ee0135b5f5c.cache" file but it still didn't work.
Similar steps are mentioned here as well - http://brantleytec.blogspot.com.au/2014/08/specflow-force-step-definition-rebinding.html
After deleting the cache file, when I reopened Visual Studio and the solution, the cache file never got recreated.
However what worked for me was reloading the project. It worked perfectly fine after that.
So here is what I suggest - Delete the cache files and then reload the project.
It is the same thing I experienced before.
The solution was to delete all the files inside bin/Debug folder and restart your visual studio. Hopefully this could help you resolve the issue as it can be extremely annoying.

Android Studio - Auto complete and other features not working

I installed android studio.. it was working fine. Now all the sudden, none of the auto complete features are working.. I can type anything anywhere no variable checking, no help with functions or checking anything. I can still compile the project and I get errors when that happens.
Can anyone please help me out with this issue.
#1 From Build menu (of your Android Studio), click Rebuild Project option.
#2 Then once rebuild completes, go to File > Invalidate Caches / Restart... and Click on Invalidate an Restart button.
This really works for me.
Source: https://code.google.com/p/android/issues/detail?id=61844#c4
#1 Rebuild is required, because Android-Studio does simply rely solely on Gradle's build-result (without static-analysis support, at least at time of writing, 2022).
#2 Clearing cache is required, because the previous build-result (before above rebuild) may be indexed, which makes Android Studio ignore latest Gradle build-result
(this is a very good speed optimization, but a very bad Developer-experience as well).
There can sometimes be other reasons too, which is why there are many other answers posted here.
You can also check if Power Save Mode on File menu is disabled.
Close Android Studio
Go to C:\Users\UserName\.android and rename the folder:
build-cache to build-cache_old
Go to C:\Users\UserName\.AndroidStudio3.x\system
OR (for Android studio 4 and Higher) go to C:\Users\UserName\AppData\Local\Google\AndroidStudio4.x
and rename these folders:
caches to caches_old
compiler to compiler_old
compile-server to compile-server_old
conversion to conversion_old
external_build_system to external_build_system_old
frameworks to frameworks_old
gradle to gradle_old
resource_folder_cache to resource_folder_cache_old
Open Android Studio and open your project again.
Originally use:
compileSdkVersion 32
targetSdkVersion 32
And an update to 33 appeared, I updated it and the suggestions in the XML no longer appeared, I went back to 32 and now the suggestions appeared.
Close Android Studio
Go to c_users_path_on_windows/.AndroidStudio3.5/system/
Delete the cache folder
Start Android Studio
This works for me.
Most of the times i have seen that the problem is that Power Save Mode is enabled, to disable go to Current inspection profile (lower right corner in Android Studio).
I have not run into this problem personally, but try checking the following settings (File -> Settings or Alt+F7):
Project Settings [name]
Inspections - ensure that Android and Android Lint is checked, or alternately just set it back to default using the dropdown box at the top.
IDE Settings
Editor -> Code Completion - ensure the Autopopup code completion is checked (and check the rest of the settings based on your preference.
Uncheck "Power Save Mode" in "File" tab
If nothing works (like happened with me ) go to your user profile in windows at %userprofile% . You will find folders there (hidden) named with the version of the android studio you are using and prefixed with a dot.
like .AndroidStudio3.1. Just delete that .
Solution: Try disabling "File -> Power Save Mode" in Android Studio (Beta) 0.8.14 - Mac OS X
On windows, the option can be at some other place.
I had the same problem then I recalled that while exploring the new android studio, I switched on the "File -> Power Save Mode" to see what it does?
I disabled the power save mode and all those intelligent features were back.
It turned out that in Power Save Mode, Android Studio switches off the modules responsible for features like Smart Code Completion and Code Analysis.
I had a similar problem where none of the other solutions worked.
Closing Android Studio and then deleting the .idea and build folders resolved the issue.
Disable Power Save Mode and Invalidate Cache and Restart.
For Artic Fox 2020|3.1 Version: Auto Complete Suggestion Problem.
Please Follow the Following Steps:
Close Android Studio
Locate caches folder in C:\Users{username}\AppData\Local\Google\AndroidStudio2020.3
and Delete it.
Open Android Studio Again.
Check your Android studio version and Target that version folder at below location
C:\Users{username}\AppData\Local\Google
Note : AppData folder is Hidden in Windows
This Solution also works if android studio mess up with xml files and java code. Don't! modify your code otherwise IDE won't able to change it to default. If you see such messy code just follow above steps and your code will be fine again.
It's Working
Disable Power Save Mode
Untick Power Save Mode Option ::
File -> Power Save Mode
There is a power saver mode in android studio if accidentally you click on that it will disable code analysis which will reduce the battery consumption and performance will also increase but it will not detect any errors and do auto complete operations.
To disable power saver mode
- Go to File Menu of Studio
- Uncheck The Power Saver Mode
In your IDE code analysis will be shown using an eye symbol at the right corner of your android studio.
If Green means it is enabled and there is no error in your code.
If Red Means It is enabled but there are few errors in your code.
If It is white or blur then code analysis is disabled
Just remove all the folders named AndroidStudioPreview
On Windows:
Go to your User Folder - on Windows 7/8 this would be:
[SYSDRIVE]:\Users[your username] (ex. C:\Users\JohnDoe)
In this folder there should be a folder called .AndroidStudioPreview
On Mac OS X
Remove these files:
~/Library/Application Support/AndroidStudioPreview
~/Library/Caches/AndroidStudioPreview
~/Library/Logs/AndroidStudioPreview
~/Library/Preferences/AndroidStudioPreview
There can be several things which cause this.
Make sure you've write the correct version in targetSdkVersion and compileSdkVersion.
Make sure targetSdkVersion and compileSdkVersion are same.
Other solutions can be:
Invalidate caches & restart Android Studio from File → Invalidate Caches / Restarts...
Clean your project from Build → Clean Project
Rebuild project from Build → Rebuild Project
Make project from Build → Make Project [this process may take some time]
Be sure to check for IDE errors by clicking the button at the bottom right of android studio.
In my case, there was a bad plugin, and the IDE Fatal Errors window prompted me to uninstall the plugin. (I wish I'd known about this feature before spending half a day invalidating caches, deleting folders, and reinstalling android studio with no luck.)
It worked for me.
From menu select:
File -> Power Save Mode
and make sure it's disabled
Go TO Left Side Top File Option
Then Click To Power Save Mode
Disable Power Save Mode That Fix This Issue
In my case, when I switch keyboard language to English, the auto complete works again.
if the autocomplete isn't working for you in Android Studio, just press File and uncheck the Power save mode, it should work fine after that.
if power save mode is already unchecked then first check then uncheck them.
If you have a library project included, make sure the library has the dependencies in build.gradle listed using the api configuration, not the implementation configuration.
Also make sure that the project that includes the library has all the dependencies listed (using the implementation configuration is fine here).
'The file size (2561270 bytes) exceeds configured limit (2560000 bytes). Code insight features are not available.'
Had this issue for days with none of these proposed solutions working before eventually getting this message in yellow under the tabs after adding a line of code. Removing the line of code eliminated the message but not the issue. There appears to be a code size window where you lose insight features but don't get this message, at least for me. Once you go over a certain point the message finally pops up. The suggested solution in a different thread for this issue was to edit 'Help/Edit Custom Properties' to increase the configured limit, but just opening this brought up a dialogue asking if I wanted to create an 'idea.properties' folder so I decided not to risk that approach over eventually cutting the file size.
If sometimes this problem can occur if you misspelled a file extension or make a file without adding an extension.
Check you have added the file extension correctly.
I think that answer may help you.
I'm using mac and suddenly the code completion (^space) not working. There are no errors. Turned out the android studio's shortcut was conflicted with system's shortcut. I don't know why it suddenly happen because it was fine before, maybe there was an update on my Mac.
See below setting for the conflicting shortcut
In my case, C:\Users\UserName\AppData\Local\Google\AndroidStudio2020.3\ just delete caches folder and restart android studio. after deleting this caches folder my problem was solved :)
I encounter with this problem while adding a kotlin library into my project on mac. Changing macbook language to english solved this problem. I also had some weird problems with auto-generated databinding codes, those are also solved.
Try Invalidate caches/Restart from File in Menu Bar from android studio.
Close Android Studio
Go to
C:\Users\YOUR_USERNAME\.android
and rename the following folder to:
build-cache to build-cache_old
then Go to (Android studio lower then version 4)
C:\Users\UserName.AndroidStudio3.x\system
OR (Android studio 4 and Higher) Go to
C:\Users\UserName\AppData\Local\Google\AndroidStudio4.x
or
C:\Users\UserName\AppData\Local\Google\AndroidStudio2021.2
depending on your version and rename these folders:
caches to caches_old
compiler to compiler_old
compile-server to compile-server_old
conversion to conversion_old
external_build_system to external_build_system_old
frameworks to frameworks_old
gradle to gradle_old (if exists)
resource_folder_cache to resource_folder_cache_old (if exists)
Open Android Studio again and the autosuggsion will be fixed.
and You can also check if Power Save Mode is disabled or not from the File menu.

Syntax highlight fail on Classes in Visual Studio 2012

I recently installed Visual Studio on a laptop and the syntax highlight fails to change Classes colors.
I tried exporting and importing the full, complete set of settings and it is still looking like that.
EDIT
I tried those websites with schemes and decided to try one, the Humane scheme, and this is how the sample code looks in my laptop after installing those settings:
However, this is how it is supposed to look:
Note the lack of highlight in class names.
What could it be causing this?
I'm starting to think that's another setting at another place which causes this.
Finally, it worked by resetting user data, running this from the Visual Studio Command Prompt
devenv /Resetuserdata
Found the hint here:
https://stackoverflow.com/a/11988265/1213246
Changin syntax highlight could be done through the menu Tools - Options - Environment - Font & Colors. It's a try and test approach that is not much improved from earlier versions of Visual Studio.
Fortunately, today there are entire sites with themes that simply need to be choosen and installed
I suggest you to visit http://studiostyl.es/ where you can find thousands themes or, for more generic go to http://www.hanselman.com/blog/VisualStudioProgrammerThemesGallery.aspx

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