setImageResource from a string

Question

I would like to change the imageview src based on my string, I have something like this:

ImageView imageView1 = (ImageView)findViewById(R.id.imageView1);  String correctAnswer = "poland"; String whatEver = R.drawable+correctAnswer; imageView1.setImageResource(whatEver); 

Of course it doesnt work. How can I change the image programmatically?

Answer 1

public static int getImageId(Context context, String imageName) {     return context.getResources().getIdentifier("drawable/" + imageName, null, context.getPackageName()); } 

use: imageView1.setImageResource(getImageId(this, correctAnswer);

Note: leave off the extension (eg, ".jpg").

Example: image is "abcd_36.jpg"

Context c = getApplicationContext(); int id = c.getResources().getIdentifier("drawable/"+"abcd_36", null, c.getPackageName()); ((ImageView)v.findViewById(R.id.your_image_on_your_layout)).setImageResource(id); 

Answer 2

I don't know if this is what you had in mind at all, but you could set up a HashMap of image id's (which are ints) and Strings of correct answers.

    HashMap<String, Integer> images = new HashMap<String, Integer>();     images.put( "poland", Integer.valueOf( R.drawable.poland ) );     images.put( "germany", Integer.valueOf( R.drawable.germany ) );      String correctAnswer = "poland";     imageView1.setImageResource( images.get( correctAnswer ).intValue() );