Android的Textview里面夹杂图片

package com.bruce.test;

import android.app.Activity;
import android.os.Bundle;
import android.text.Spannable;
import android.text.SpannableStringBuilder;
import android.text.style.ImageSpan;
import android.widget.TextView;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class MainActivity extends Activity {
    TextView mSubjectDetailView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //
        mSubjectDetailView = (TextView) findViewById(R.id.subject_detail);

        CharSequence text = "如图所示★，ds★fdsfd★ddd，如果fdsfs★东东";
        SpannableStringBuilder builder = new SpannableStringBuilder(text);
        String rexgString = "★";
        Pattern pattern = Pattern.compile(rexgString);
        Matcher matcher = pattern.matcher(text);

        while (matcher.find()) {
            builder.setSpan(new ImageSpan(this, R.mipmap.ic_launcher), matcher.start(), matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        }
        mSubjectDetailView.setText(builder);
    }
}

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