Retrieve Color Programmatically From R.color

I have a ListView which contains many TextViews, and one TextView should contain a different background color depending on the data that is retrieved. Because i dont want to hardc

Solution 1:

You can get color ID by using resource name (R.color.foo) and resolve it at runtime:

public int getColorIdByResourceName(String name) {
  int color;
  try {
    Class res = R.color.class;
    Field field = res.getField( name );
    int color = field.getInt(null);
  } catch ( Exception e ) {
    e.printStackTrace();
  }
  return color;
}

and then

int colorId  = getColorIdByResourceName("foo21");
int colorVal = getResources().getColor(getColorIdByResourceName("foo21"));

Solution 2:

Your second solution seems good and isn't a hack exactly. You should be find with this. But if you get your colour name dynamically then this code could be handy for you.

public static int getColorIDFromName(String name)
{
    int colorID = 0;

    if(name == null
            || name.equalsIgnoreCase("")
            || name.equalsIgnoreCase("null"))
    {
        return 0;
    }

    try
    {
        @SuppressWarnings("rawtypes")
        Class res = R.color.class;
        Field field = res.getField(name);
        colorID = field.getInt(null);
    }
    catch(Exception e)
    {
        Log.e("getColorIDFromName", "Failed to get color id." + e);
    }

    return colorID;
}