How to use getString(R.string) in an external class?

Question

I would like to know how to obtain the value from a string getString(R.string) in an external class.

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The most obvious way is to pass context to this class constructor initializer. You can declare global context in application extending class and make it static but it's not the most elegant way — Sebastian Pakieła, Aug 18 '15 at 00:23
See this answer: https://stackoverflow.com/questions/4391720/how-can-i-get-a-resource-content-from-a-static-context/4391811#4391811 This is the best solution, in my opinion. --- But you can also do this: https://stackoverflow.com/a/8765789/8312196 — River, Jun 24 '19 at 11:30

score 0 · Answer 1 · answered Aug 18 '15 at 00:23

0

Do something like this:

Java Code:

String string = getString(R.string.hello);

strings.xml:

<resources>
    <string name="hello">Hello!</string>
</resources>

answered Aug 18 '15 at 00:23

Hussein El Feky

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That can only be done within the activity, what I need it is to get strings.xml values in an external class activity. – Heder Ithamar Aug 20 '15 at 02:02
Do you mean a class that doesn't extend anything? I'm not really sure what you want exactly. – Hussein El Feky Aug 20 '15 at 11:26

score 0 · Answer 2 · edited Jun 24 '19 at 11:54

0

You can do it this way:

public static class OtherClass{

    public static void getString(Context mContext){
        String str = mContext.getString(R.string.app_name);
        Log.i("String value", str);
    }

}

How to call from Activity:

OtherClass.getString(this);

edited Jun 24 '19 at 11:54

Matthew

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answered Aug 18 '15 at 04:01

Hiren Patel

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score 0 · Answer 3 · answered Jun 24 '19 at 12:04

You need context to use getString(..) method in any class.

Make one MyApplication.java class file.

public class MyApplication extends Application {

    private static Context context;

    @Override
    public void onCreate() {
        super.onCreate();
        context = getApplicationContext();
    }

    public static Context getContext() {
        return context;
    }
}

Add name argument in Application tag in manifest file like,

<application
   android:name=".MyApplication"
   android:icon="@mipmap/ic_launcher"
   ....

And then in you any class you can use below line to use getString(..) method.

String string = MyApplication.getContext().getString(...);

How to use getString(R.string) in an external class?

3 Answers3