Develop Reference

Android-Studio: How to make a resource string value the same as its name

I want to use the string resources to save some key values. So, I have something like this:
<string name="key_name">key_name</string>
The resource name and the resource value are the same. There is no need for me to make a difference between them, as it is just to cleanly store one value.
To reduce redundant information,
is there a way to just tell android-studio that the name equals the value? Something like this?
<string name="key_name"/>

I think you can't do it. It looks like you create a variable, you must name it and when you need you can set its value.
You can't create a variable with same values with name at the same time.

I think you have the wrong resource type. A string resource is used for mapping a name to a text. From what you're describing here you only need the name (and then can extrapolate the text from it).
Using strings with matching name and value shouldn't be necessary:
If you're going to be referencing them from Java or Kotlin code, you still need to know the name (i.e. R.string.key_name), so you might as well just use the string value there.
If it's for using inside XML code (where you want to pass the value of a string, e.g. text="#string/key_name") most of the time you can just use the raw string there (i.e. text="key_name").

How to get the name of a button in Android

I need to get the name of a Button which I gave it with
android:id="#+id/button2"
I tried with button.getId() but then I only get this number: 2311296256.
Also .getTag() doesn´t work (I get a null value)
Does anybody know the solution?

getResources().getResourceEntryName(int id)
is what you are looking for. From the doc:
Return the entry name for a given resource identifier.
here the documentation.

So you want to get resource identifier name from resource identifier number. This should work:
getResources().getResourceEntryName(button.getId());

If you want to use getTag() you have to give the Button a tag first like this:
android:tag="sometag"

Android get resource type of id

I search for a way to say which resource type is behind a integer ID. For example i have the id of a drawable and another one for a color. I can load the drawable with Resource.getDrawable(id) and the color with Resource.getColor(ID) but how can i know which method is the right one for a given ID. I look for something like Resource.isColor(id)?
Has anybody a good idea. I wrote a image loader which loads images from web, filesystem and drawables but now also from hex color or color ID.

Check out this function from android Resources class. Resources.getResourceTypeName(int resid) (also this )

To find the resource type the safest solution is to use the below code
String viewName = findViewById(resourceId).toString();
String resourcetype = viewName.substring(0,viewName.indexOf("{"));
The resoucetype then contains the full classname for the resource, eg in case of EditText, it shows
android.widget.EditText
Tried some other ideas but noted that getResourceTypeName only returns 'id' as value and getTag() on View does not work in all conditions.

How to get string resource name by its value

I want to get a string resource name or ID by passing its value.
Example :
<string name="stringName">stringValue</string>
I want to pass the stringValue and get the stringName or ID (id value)
Based on ID i will do some calculation to get another ID of another String resource

I don't know if that's possible and I think the IDs can change without warning if the R class gets newly generated. You could of course try some reflection magic on this class, but I would recommend against it.

I also have this problem, and can think of 2 possible workarounds:
load all the strings and their names into a table, and look in the
table.
Or cycle through my complete list of names, getting the string resource
for each one, and comparing it to my known string resource.
I am implementing the 2nd one, as my list of string resources is not very big, and I don't have to do this operation very often. Once the name is known, it's possible to get the Resource Id via:
//Get resource id from name
var resourceId = (int) typeof (MyApp_droid.Resource.String).GetField(MyStringName).GetValue(null);
(code is C# because I'm working in Xamarin).

How to add R.drawable resources to an array for android?

I would like to have sequence of set R.drawable been called in integer array so that it can be accessed later with choice.But I'll like to load to the R.drawable dynamically which corresponds to different names.It names needs to be had as per the external value input not hardcoded.I tried this in making many but like use list,set,array conversion etc.Kindly guide me with a snippet or example on this regard.Thank you.

I suppose, that best way to achieve this funcionality is by using ArrayAdapter of Integer.
You will simply add drawble resources by id.
If you need to get resource id, but you will get string input from user, you can use this code:
Android, getting resource ID from string?