Loading string resources in Android
Sunday, January 18th, 2009 - 1:50 pm - Android
To support i18n, internationalization, Android provides a resource file, usually /res/values/strings.xml. That XML and others are compiled and each resource is assigned a unique integer ID. The IDs are placed into a resource file, “R”, as public static final variables. Here’s how to get the value of a string resource in your application.
In a layout XML
android:text="@string/resource_name"
In an Activity
this.getString(R.string.resource_name)In an area of the program in which you have access to a Context or Application, such as a ListAdapter.
context.getString(R.string.resource_name)
application.getString(R.string.resource_name)
This is great. Thank you so much. I had been trying to access a string resource from the java code for a couple of hours already and could not figure it out.
for example, you have a like this…
So, u need to create a string variable in strings.xml that can be found at : projectname/res/layout/values/strings.xml
what to do? there are two ways of doing this :
1. Resources tab :
– Click ADD button
– Choose STRING
– Give the name same as you did in the layout : title
– Give the value of that string such as : this is the title
2. via code in strings.xml file tab
– Just add this syntax :
This is the title
** But you can just do like this in your layout :
Hope its could help you… 🙂
how can I use “@string” here ? I am a newbee..
This concept is not intuitive. Your blog was a lifesaver!
TQ… i really appreciate this!!
Sir, I got “R.java was modified manually!Reverting to generated version!” message when I changed “String r = getResources().getString(R.String.nameHere); ” line and saved the project…
So whats wrong with it?
thank you…
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ooo u r a saviour
can also do
String r = getResources().getString(R.String.nameHere);
to skip the 2nd line
In case there is not a Context or Activity handy:
final Resources r = Resources.getSystem();
r.getString(android.R.string.untitled);
this seems so extraneous. I thought doing something like:
EditText textBox = (EditText)findViewById(R.id.textBox);
and then
String strMessage = textBox.getText().toString();
would have done it… but so far only your way works, so, thanks!
Thanks for pointing that out, David, but I think I covered it. amidroid, please note that I mentioned holding on to the Application. Don’t hold an instance of an Activity. You can get the Application by calling
this.getApplication()from an Activity.MrSqueezles: You need to watch out for memory leaks on orientation change (or other environment changes) when you do that.
Googling “Android memory leak” gets a page by Romain Guy that explains it well.
amidroid, if you don’t have access to a context, you can’t read data from it. You could hold an instance of the application in whatever class needs it or make some kind of a proxy.
what for other classes? which do not have access to context or application. e.g. an independent class.
Thanks!
I’m glad you found it helpful, Sonja. It took me a lot of searching through the API before I realized it was in front of my face 😛
Thanks, that’s what I searched for. Had a crazy hack around to include two string resources in one TextView, like load the first, save the text to a string, load the other and append the first… Haha this is really easy 🙂