Question

I am having trouble figuring out how to use a sting as an object name. Let me explain. I have a dynamically assigned image which I tag. I get that tag as a string and I have a stored string (a definition) with the same name as the tag. I wan’t to be able to SetText() using the tag which is the same as the sting name. Here is what I am trying to achieve:

        public void ShowDefinition(ImageView v){
        String str=(String) v.getTag();
        setContentView(R.layout.ditionary);
        TextView t = (TextView)findViewById(R.id.definition);
        if(str == "def1")
            t.setText(R.string.def1);
        if(str == "def2")
            t.setText(R.string.def2)
        }

The if statements are what I would like to do in a simpler way. The string str is a string pulled from the tag. The android resource strings have the same name, as you can see, but I can not figure out any way to use str in the setText argument. Any Ideas?

Answer 1

Use Resources.getIdentifier(…) to look up a resource id by name.

public void ShowDefinition(ImageView v) {
    String str=(String) v.getTag();
    setContentView(R.layout.ditionary);
    TextView t = (TextView)findViewById(R.id.definition);
    t.setText(getResources().getIdentifier(str, "string", "com.your.package.name"));

Replace com.your.package.name with the package name of your app.