【Andoid杂谈】Android TextView中显示超文本（HTML）内容

来源：互联网发布：爱淘宝的红包怎么领取编辑：程序博客网时间：2024/04/29 11:45

主要在于html.fromHtml();方法的应用，以下是代码：

<span style="font-size:18px;"><strong>package yyc.com.htmltextview;import android.graphics.drawable.Drawable;import android.os.StrictMode;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.text.Html;import android.util.Log;import android.view.Menu;import android.view.MenuItem;import android.widget.TextView;import java.net.URL;import yyc.com.htmltextview.tools.HtmlTextView;public class MainActivity extends AppCompatActivity {    TextView htmlTextView;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        struct();        init();    }    public static void struct() {        StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()                .detectDiskReads().detectDiskWrites().detectNetwork() // or                        // .detectAll()                        // for                        // all                        // detectable                        // problems                .penaltyLog().build());        StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()                .detectLeakedSqlLiteObjects() // 探测SQLite数据库操作                .penaltyLog() // 打印logcat                .penaltyDeath().build());    }    private void init(){        htmlTextView=(TextView)findViewById(R.id.html);        String s="<html><head><title>TextView使用HTML</title></head><body><p><strong>强调</strong></p><p><em>斜体</em></p>"                + "<p><a href=\"http://www.dreamdu.com/xhtml/\">超链接HTML入门</a>学习HTML!</p><p><font color=\"#aabb00\">颜色1"                + "</p><p><font color=\"#00bbaa\">颜色2</p><p><font color=\"#aabb00\">颜色1"                + "</p><p><font color=\"#00bbaa\">颜色2</p><p><font color=\"#aabb00\">颜色1"                + "</p><p><font color=\"#00bbaa\">颜色2</p><p><font color=\"#aabb00\">颜色1"                + "</p><p><font color=\"#00bbaa\">颜色2</p><p><font color=\"#aabb00\">颜色1"                + "</p><p><font color=\"#00bbaa\">颜色2</p><h1>标题1</h1><h3>标题2</h3><h6>标题3</h6><p>大于>小于<</p><p>"                + "下面是网络图片</p><img src=\"http://avatar.csdn.net/0/3/8/2_zhang957411207.jpg\"/></body></html>";        //以下放置内容HTML超文本内容        htmlTextView.setText(Html.fromHtml(s,imgGetter,null));    }    //这里面的resource就是fromhtml函数的第一个参数里面的含有的url    Html.ImageGetter imgGetter = new Html.ImageGetter() {        public Drawable getDrawable(String source) {            Log.i("RG", "source---?>>>" + source);            Drawable drawable = null;            URL url;            try {                url = new URL(source);                Log.i("RG", "url---?>>>" + url);                drawable = Drawable.createFromStream(url.openStream(), ""); // 获取网路图片            } catch (Exception e) {                e.printStackTrace();                return null;            }            drawable.setBounds(0, 0, drawable.getIntrinsicWidth(),                    drawable.getIntrinsicHeight());            Log.i("RG", "url---?>>>" + url);            return drawable;        }    };    @Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.menu_main, menu);        return true;    }    @Override    public boolean onOptionsItemSelected(MenuItem item) {        // Handle action bar item clicks here. The action bar will        // automatically handle clicks on the Home/Up button, so long        // as you specify a parent activity in AndroidManifest.xml.        int id = item.getItemId();        //noinspection SimplifiableIfStatement        if (id == R.id.action_settings) {            return true;        }        return super.onOptionsItemSelected(item);    }}</strong></span>

以下是代码：

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