Display image in WebView

Java Code:

package com.image.webview;

import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.webkit.WebView;

public class MainActivity extends Activity {

 WebView webView;
 String imagePath = "/sunil.png";

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //setContentView(R.layout.activity_main);

        webView = new WebView(this);
        setContentView(webView);

        String fullUrl = "file://"
          + Environment.getExternalStorageDirectory().getAbsolutePath().toString()
          + "/"
          + imagePath;
        webView.loadUrl(fullUrl);
        webView.getSettings().setBuiltInZoomControls(true);
        webView.getSettings().setUseWideViewPort(true);
        webView.getSettings().setLoadWithOverviewMode(true);

    }

}