Convert String containing an ID into an Integer-ID

Question

I have a short question:

How is it possible to convert a String, containing the Id of a Drawable, which is

String idString = \"R.drawable.bubblegum\"         


        

Answer 1

if your idString is constant, i.e. it's doesn't change during runtime, follow DeeV's answer. If it changes, you can take a look at getIdentifier method.

Answer 2

Although this question is rather old already, the thing you're missing is that "id" and "drawable" are different resource types. So instead of

getResources().getIdentifier(stringId, "id", "my.Package");

it's

getResources().getIdentifier(stringId, "drawable", "my.Package");

You can also get package name with the activity context like activityContext.getPackageName()

/**
 * Returns Identifier of String into it's ID as defined in R.java file.
 * @param pContext
 * @param pString defnied in Strings.xml resource name e.g: action_item_help
 * @return
 */
public static int getStringIdentifier(Context pContext, String pString){
    return pContext.getResources().getIdentifier(pString, "string", pContext.getPackageName());
}

Answer 3

You could try the following

int id = getResources().getIdentifier("arr_name"+positionSelected,
                        "array", rootview.getContext().getPackageName());

I use in spinner dropdown, get array string follow parent spinner may help you!

Answer 4

int idInt = R.drawable.bubblegum;

Unless there's something I'm missing here.

Answer 5

Call getIdentifier() on the Resources object you get via getResources(), as seen in these StackOverflow questions:

• Is possible in Android to findView by String id?
• Android findViewbyId with a variant string
• How to access R.string.xxx resources from a method by passing string 'xxx' as parameter to that method?
• Dynamically build a resource Identifier
• How to access the values from strings.xml dynamically?
• Drawable resource using a variable

among others.

Answer 6

At least, I couldn't get a solution for this problem. It seems that there's no way to convert a String "R.id.mytext" into an integer like R.id.mytext that can be used in findViewById(R.id.myText).