Spannable TextView with Image clickable

1.activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#e6e6e6"
    android:gravity="center"
    android:orientation="vertical" >
    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</LinearLayout>

2.MainActivity.java

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.text.Selection;
import android.text.Spannable;
import android.text.Spanned;
import android.text.method.LinkMovementMethod;
import android.text.style.ClickableSpan;
import android.text.style.ImageSpan;
import android.view.MotionEvent;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final TextView textView = (TextView) findViewById(R.id.textView);
        String text = "Image $ span";
        int $index = text.indexOf("$");

        Spannable span = Spannable.Factory.getInstance().newSpannable(text);
        span.setSpan(new ImageSpan(getBaseContext(), android.R.drawable.star_on),
                $index, $index + 1,
                Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

        //for on image click
        span.setSpan(new ClickableSpan() {
            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this, "Image is clicked", Toast.LENGTH_SHORT).show();
            }
        }, $index, $index + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
        textView.setText(span);

        //for image clickable
        textView.setMovementMethod(new LinkMovementMethod() {
            @Override
            public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
                Selection.removeSelection(buffer);
                widget.setHighlightColor(Color.argb(0,0,0,0));
                return super.onTouchEvent(widget, buffer, event);
            }
        });
    }
}