Develop Reference

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 - 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.

Android/Cordova: Where to add files?

I have successfully created a project with the cordova command line tool and I am able to import this project in the Android Development Toolkit as well as run it in the emulator.
Now, I see the example files in the folder "/www". When I change these files, build the project (using CIT) and run it in the emulator, I do not see the changes I made. I assume that I need to change other files or put them in another folder. The assets folder is empty besides a file that says that I need to delete the exclusion filters to see the files. Do I need to change the files in there?
???
Thanks for any hint!

Once a cordova project has been created. It has a root /www folder where all resources are eligible to be shared on the added platforms (which you intends to add)
You should modify here. though its possible to modify resources per platform. (read more API)
Once any shared resource i.e. inside the main www folder are modified then you have to issue cordova build in order to reflect the changes in the corresponding platforms (which you have added)
You are unable to see the assets folder resources. Because by default it is hidden. Just select the project and go in properties and then remove the checks.
Import existing Android project --> select project --> right click select properties --> Resource --> Resource filters.
From the Exclude All , remove both items. This will show you resources inside assets folder.

Importing the desk-clock android project into eclipse

I copied the code onto my computer via
svn checkout http://desk-clock.googlecode.com/svn/trunk/ desk-clock-read-only
into the folder C:\Programming\desk-clock-read-only
I try to create the project via File/New/Other/Android/Android Project from Existing Source.
I select the C:\Programming\desk-clock-read-only path.
For some reason eclipse only wants to import C:\Programming\desk-clock-read-only\res.
The source files are in C:\Programming\desk-clock-read-only so they don't get imported.
There's just an empty src folder.
What do I have to do to import the project correctly?

I dont't know how the developer of this project managed it to run this but usually the java files belong inside the src folder and the manifest definitely not inside the res folder. If you change this Eclipse(or the IDE of your preference) might recognize it, but you'll maybe get some errors because just putting the java files inside the src folder shouldn't solve it. You actually need a package. Check your manifest for that.

Android: Source path not being included

In my project I have added some folders that I want included in my project for source files. But no matter what I do, the source never gets recognized. I tried refreshing, clean up, restarting but nothing works. Here is the project's source folder:
I want the folders integration/android added. This is how it is showing up in Eclipse:
And here is what my build configuration looks like:

I could be wrong, but it looks like you have added them as a folder, but not actually added the folder to your project.
The folder should show up in your src folder in the solution explorer window under your other package.
Try creating the package name in your project, then move all the src files into it.
And when its in the src folder, in its correct package, you dont need to include any extra build paths.
(You can have multiple packages in a single application)

Importing someone elses project that is over 2 years old is almost always problematic. I found the easiest solution just to create a fresh project and add the files manually from the old project.