Android Studio : แสดงการใช้ ImageGetter กับ HTML Tag ที่อยู่ภายใน MainActivity.java เอง

MainActivity.java

package com.thaiall.www.myapplication;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import android.text.Html;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.content.res.Resources;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    private class ImageGetter implements Html.ImageGetter {
        public Drawable getDrawable(String source) {
            int id;
            id = getResources().getIdentifier(source, "drawable", getPackageName());
            if (id == 0) {
                // the drawable resource wasn't found in our package, maybe it is a stock android drawable?
                id = getResources().getIdentifier(source, "drawable", "com.thaiall.www.myapplication");
            }
            if (id == 0) {
                // prevent a crash if the resource still can't be found
                return null;
            }
            else {
                Drawable d;
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { //>= API 21
                    d = getResources().getDrawable(id, getApplicationContext().getTheme());
                } else {
                    d = getResources().getDrawable(id);
                }
                //d.setBounds(0,0,d.getIntrinsicWidth(),d.getIntrinsicHeight());
                d.setBounds(0,0,48 * 2,64 * 2);
                return d;
            }
        }
    }

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

        Resources res = getResources();
        String mData = "<b>hello</b> <img src=\"lp01\" />";
        TextView htmlTextView = (TextView)findViewById(R.id.textView);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            htmlTextView.setText(Html.fromHtml(mData, Html.FROM_HTML_MODE_LEGACY, new ImageGetter(), null)); // for 24 api and more
        } else {
            htmlTextView.setText(Html.fromHtml(mData, new ImageGetter(),null)); // or for older api
        }
        
    }
}