Develop Reference

Android studio does not create files

I added a new fragment to my project in Android studio like the way I did it a couple of times before, but now it says that this file das not exist (and is read only). I cannot edit a thing in it but also do not know how to correctly close it, so I can't use the name, which I really want...
I cannot find the file anywhere within my project and it is also not listed in the project+path (Name/App/src/main/...) but in the entire windows location (E:/...).
And how can I create a permanent file, or better, why does it not work any more?

This must be a fault on your side. Are you sure you are in the right folder? This is the only explanation I could think of. So you creat the files but outside of your project's folder, so you cannnot edit them or anything else, but read them...
Bene

Make sure that you have no LINT ERRORS.
For checking it:
Go to the bottom right side of Android Studio. Tap on "Gradle Console" tab.
If you have some errors(red text) - remove them and try again.

"Source not found" when debugging SOME classes of the Android platform code

I'm using Eclipse Kepler with the latest ADT, and I have already set the Java Source Attachment for android.jar to point to the correct directory.
With this setup, I can place breakpoints and step into most classes/methods with no problems at all. However, for some classes, Eclipse just refuses to load the source, and instead displays the standard Source not found screen, although the corresponding source file (ScrollBarDrawable.java) is present in the source directory (under android\widget).
The particular example I have now is with the android.widget.ScrollBarDrawable class, but it has happened with others before.
How to reproduce:
Create a simple project with an EditText in the layout.
Call editText.setHorizontallyScrolling(true); in onCreate() (so that it needs to draw scrollbars) and enter long text into it.
Place a breakpoint in the onDrawScrollBars() method of the View class, on any calls to methods of the scrollBar object (e.g. line 11967 for android-19).
Try to step into this method.
Has anyone else experienced this?
Any tips on how to fix it, or at least an explanation of why it might be happening (as in: this class is somewhat different from the others)? I have already trying added additional File System Directory entries to the Edit Source Lookup Path dialog, to no avail.

How do I move files in Android IDE

I'm using Android IDE to develop, and I need to move source files from one folder to another, but I can't seem to find a way to actually MOVE a file (even copy and delete in two steps would work).
Am I blind? This seems like a required feature of any IDE, and given how good Android IDE is, I find it shocking if this feature was overlooked.
NOTE: This question is NOT about Android Studio!

You are right. The (essential) feature to move files around is missing from Android IDE.
Workaround:
You can manipulate the files in any explorer. Your project files are placed in /sdcard/AppProjects/YourProject.
You can count on the fact that such a feature will not be missing for long.

I would download a file manager (I like root browser) and switch between the two apps as a temporary work around. That app is updated fairly often so I would also just shoot the developers a feature request. I am sure they would consider it essential as you do.

PREFACE: Use a file manager; this hack renames Java classes.
Rename, with the relative path as the new name.
Let's say I wanted to move file from /sdcard/A to /sdcard/B. I'd long-press on file, chose rename, and type the new destination as ../B/file.
This doesn't seem like deliberate feature, rather a side effect of blindly passing path strings to the underlying framework. Can't say I don't like it, although, I'd recommend using a proper file explorer app.

Right-mouse click on any element (folder, Class, or XML file) the click = 'cut'.
Right-mouse click on the folder where you would like the files to be moved to, and then select 'paste'.
This works the same as moving files in the file-system.
For the most part (depending on where you are moving to and from) you can just drag-and-drop your files to move them as well.

I often achieve this goal by simply drag and drop. And the IDE also takes care of all the refactoring stuff.

Best practice on creating structure in resources

the res/layout* dir of my projects are getting really messy lately and as there are afaik no subdirs allowed there to change that. So it is hard to get structure in there - how do you guys do that?

I don't know about others but for myself I like to use prefixes to help keep things sorted, essentially taking the place of subdirectories. For example, all my activity layouts start with 'activity_' and all my UI controls start with 'control_', notifications with 'notification_', etc.
I am then left with a flat directory with at least some structure, something like:
activity_graph.xml
activity_main.xml
activity_map.xml
control_graph.xml
control_title_bar.xml
notification_just_label.xml
notification_with_progress_bar.xml
...
It's not perfect, but it works for me.

Sorry subfolder inside the layout folder is not possible other than docs specification.
Just check this and this and this question.

Another possibility is to refactor some elements of your application into libraries.
For example you could extract unrelated fragments (as fragments should per se be unrelated) into libraries, mark that project as an Android library (check "Is library" in project properties) and then use your own libraries in your main project.
The resources you need within the separate libs will not collide anymore, but will be "thrown together" at build time, so access is fine.
Here are the docs for that.

Refresh list of drawables in Eclipse?

When I add drawable resources to my project they do not show up in the list of drawables in the Reference Chooser. I checked the R file and there are references for the files.
I have tried refreshing the project, cleaning the project, and fixing project properties and nothing seems to help. Sometimes a couple will randomly show up in there, but not all of them.
The only consistent way I can get them to show up is to restart Eclipse.
Any ideas?
Thanks
Edit: Further findings:
After some trials, I found an other inconvenient work around to he issue. Turns out when importing multiple files into the project at once, Eclipse will only add the last one imported into the reference chooser. So when I imported my images one at a time, they all show up properly!
Like I said, inconvenient considering the amount of images I have left to import, but maybe with this new information it may help nail down where the issue may be and a possible fix.

I too faced the same problem. I added an image to the res/drawable-hdpi folder, cleaned the project and was able to see the name of the image in the left pane in Eclipse. But when I tried to use this image using Reference Chooser and looked under Drawable, I didn't find it.
I simply exited from Eclipse, and started it again. It was there! Like many things in computers, problems can be resolved simply by restarting!

The only way I found to fix this is to include the generated R class itself.

I found out some new info again.
Since I am doing a port from Blackberry, almost all of my images' filenames have uppercase letters in them, so I end up importing them all and then having to rename all the images after they are imported into the project.
I tried renaming all of my images before importing them all into the project. To my delight, all of the images showed up right away in the reference chooser! So it seems there is a problem when you import files and they cause errors with your project and allowing all of them to show up in the reference chooser.
So if you have to rename files, do it before import!
I'm just not entirely sure that this is the only cause for this issue but it has solved the problem for me.