in my app I do a web request that returns some result code, e.g. 105. I have string resources that look like that
O.K.
Try this getResources().getIdentifier(name, defType, defPackage) in a simple way.
getResources().getIdentifier(name, defType, defPackage)
Toast.makeText(this, getResources().getIdentifier("r"+resultcode, "string", getPackageName()), Toast.LENGTH_LONG).show();