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javaandroidstaticconstantsandroid-resources

How can I get a resource content from a static context?


I want to read strings from an xml file before I do much of anything else like setText on widgets, so how can I do that without an activity object to call getResources() on?


Solution

    1. Create a subclass of Application, for instance public class App extends Application {
    2. Set the android:name attribute of your <application> tag in the AndroidManifest.xml to point to your new class, e.g. android:name=".App"
    3. In the onCreate() method of your app instance, save your context (e.g. this) to a static field named mContext and create a static method that returns this field, e.g. getContext():

    This is how it should look:

    public class App extends Application{
    
        private static Context mContext;
    
        @Override
        public void onCreate() {
            super.onCreate();
            mContext = this;
        }
    
        public static Context getContext(){
            return mContext;
        }
    }
    

    Now you can use: App.getContext() whenever you want to get a context, and then getResources() (or App.getContext().getResources()).