Develop Reference

Can't import assets from adobe XD into android studio

I made a UI layout using adobe XD and wanted to export it to use in android studio.
I achieved this by using the Export-kit plugin, which conveniently exported all my required assets for one page into a folder.
Exported assets folder
the readme.txt then directs me to copy all these assets to the folder for the noactivity project folder for android studio.
after doing so , I still don't get any response.
So, I try it with a basic activity and manually add all the required XML codes (activity_main,colours,styles,e.t.c) , but still don't see anything.
I know that the skins exported from xd are in the project folder
(Copied values in the projects folder)
but I cant seem to view them on android studio.
Android Studio Window
any help in this issue will be really appreciated.

You have to put those files in the drawables folder inside the res folder, and keep the colors, string into their respective folder in the values folder inside res.

Xamarin Android assets folder not updating when building the solution

I have a Xamarin.Forms app that needs to read data from a json file. I placed the file into the Android assets folder and selected the build action AndroidAssets
Then I try to load the file in MainActivity with Assets.Open(filename) and I get a FileNotFoundException. I deleted the Android and PCL bin folders and tried to build the project again but got the same result. Then I opened the .apk file in WinRar and when I go to the assets folder, the files that I added to the project are not there.
Does anyone have any idea what's the problem here?

Did you set the files as embedded resources from the file properties?
If you not, right click on the file -> Properties -> set as Embedded Resources in Build Action

The problem was with using the "-" character in resource file names. Changed it as suggested by York Shen and it started working as it was supposed to.

Android Studio newly created folders not showing

I am using Android Studio 2.1.1 (currently the most updated stable version).
I created new directory inside 'res' by name "values-21"
and it don't shows up.
But if I go to the physical location of 'res' on the hard drive I can see that its exist.
and of course I checked using both Android and Project Files structure but either way its not showing it.
I wanted to check where is the problem so I created another directory by name "menu", and the last one was shown.
just to be sure I tried to create the same directory again ("values-21") but Android studio didn't allowed it because this directory allready exist's.
any ideas how to fix it?
Update - the solution is to create new directory using the "Android resource Directory" option and not by "Directory" option.

all you values xml files stored in values, values-21, values-mdpi or other physical folder in AndroidStudio displayed in one res/values folder.

It will not show until you copy a XML file into values-21, android studio consider all values folders to be of same family and it shows only one folder and the files with post script of the family in which it lies.

copy some layout file from resource directory and through windows explorer paste in that the folder that you have created i.e values-21 and now come back to android studio and check the folder should be there.
Happy coding

Android - How do I create the assets folder manually?

I'm new to Android development, and I'm trying to manage projects from the command line using the SDK since I cannot get Android Studio 1.2 to work properly in my system (it's unresponsive).
The problem: I created a new project but the asset folder is missing.
Other SO answers (enter link description here) solve this by creating the folder from the IDE, or by pointing to the asset folder in the .iml file, with doesn't work in my case (I trying to mange the projects from the command line entirely)
There's also a solution editing build.gradle, but the project created from command line (using the SDK) doesn't seem to be a gradle project.
Any help would be appreciated.

Just create a directory called "assets" at the root of your project, i.e. in the same directory your AndroidManifest.xml lives. There's no need to "link that folder from the project". At least that's the case on my system, where I'm using Android SDK 24.4.1 (and I'm not using Gradle -- just emacs and ant).
Once I had assets/fonts/aisauc.ttf in there, the following code...
import android.graphics.Typeface;
...
Typeface greek =
Typeface.createFromAsset(getAssets(), "fonts/aisauc.ttf");
mytextfield.setTypeface(greek);
gave me a TextField with characters from the font I wanted.

How do I create the assets folder manually?
You make it the same you make any directory on your filesystem. Whether you use mkdir or a command-line equivalent, or whether you use your desktop OS's file manager, is up to you.
The default location for an assets/ directory is in a sourceset (e.g., src/main/assets/, to go along with src/main/AndroidManifest.xml and src/main/res/ and src/main/java/, where src/main/ is a sourceset). You can have an assets/ directory located elsewhere, if you choose, but then you will need to configure your build.gradle file to teach Gradle the alternative assets/ location for whatever sourceset you are trying to apply it to.

In your left most sidebar or the sidebar that shows the app, manifests, java... etc, right click app > New > Folder (has the green android symbol next to it) > Assets Folder.
On the next screen leave the path as 'main' and click 'Finish'. Then you can drop whatever asset you want into the folder.

how to reference an asset in a library project

In a class belonging to a Library project I call:
webview.loadUrl("file:///android_asset/info.html", null);
Unfortunately, this only works if I duplicate the file info.html into the Application's project asset folder as well.
Is there a way to tell an Android library code: "look for this file in the library's assets folder, not in the application's assets folder" ?

This answer is out of date, the gradle build system and AAR files support assets.
From the Android Docs:
Library projects cannot include raw assets
The tools do not support the use of raw asset files (saved in the assets/ directory) in a library project. Any asset resources used by an application must be stored in the assets/ directory of the application project itself. However, resource files saved in the res/ directory are supported.
If you want to include files from a Library project, you'll need to put it in the resources instead of the assets. If you're trying to load HTML files from your library project into a WebView, this means that you'll have to go a more roundabout method than the usual asset URL. Instead you'll have to read the resource data and use something like loadData.

This is now possible using the Gradle build system.
Testing with Android Studio 0.5.0 and v0.9 of the Android Gradle plugin, I've found that files such as
MyLibProject/src/main/assets/test.html
are correctly packaged in the final application and can be accessed at runtime via the expected URL:
file:///android_asset/test.html

You can achieve this by creating a symbolic link in the project's asset folder that points to the directory in the library project.
Then you can access as below:
webview.loadUrl("file:///android_asset/folder_in_a_libary_project/info.html", null);

Okay. Ive been stressing out and losing sleep about this for a while. Im the type of person that loves API creation, and HATES complicated integration.
There arent many solutions around on the internet, so im quite proud of what Ive discovered with a bit of Eclipse Hackery.
It turns out that when you put a file in the Android Lib's /assets folder. The target apk will capture this and place it on the root of the APK archive. Thus, making general access fail.
This can be resolved by simply creating a Raw Java Library, and placing all assets in there, ie (JAVALIB)/assets/fileX.txt.
You can in turn then include this as a Java Build Path Folder Source in
Project > Properties > Java Build Path > Source > Link Source.
Link Source
Click on Variables. and Add New Variable, ie VAR_NAME_X. location : ../../(relative_path_to_assets_project)
Click Ok
Now, when you build and run your app, the assets folder in the APK will contain your (GLOBAL Library) files as you intended.
No need to reconfigure android internals or nothing. Its all capable within a few clicks of Eclipse.

I confirm that Daniel Grant's approach works for at least the following situation: target project does NOT have an asset folder (or the folder is empty, so you can safely delete it).
I did not setup any variable.
Simply setup a LinkSource as follows (just an example)
Linked folder location: /home/matthew/workspace_moonblink/assetsForAdvocacy/assets
Folder name : assets
The "assetsForAdvocacy" is a Java project, (created with New- Project - Java Project) with empty src folder, and a new folder named "assets", which now provides the entire assets folder for the target project.
This is a fairly straightforward way within Eclipse to provide assets re-use across many different projects IF they do not already have assets, good enough to get going with. I would probably want to enhance it to become a content provider in the long run, but that is a lot more development.
My project accesses the assets with the following code:
String advocacyFolderInAssets = "no_smoking/"; //a folder underneath assets/
String fn =advocacyFolderInAssets+imageFilename;
Bitmap pristineBitmapForAdvocacy = getBitmapFromAsset(context, fn);
I use Motodev Studio 3.1.0 on Ubuntu. It would not let me 'merge' a new assets folder in the new assets-only project onto an existing assets folder in the target project.

If you want to use a setup where multiple derivate products are created from one library you might consider using svn:externals or similar solution in your SCM system. This will also do the trick that static assets like online help may be versioned seperately from the android source code.

I found this older question, it might help you, too.
This is the official way Google uses to archive this (from the above post): Link