直接用webview加载：

package com.example.testcsdnproject;import androidx.appcompat.app.AppCompatActivity;import android.annotation.SuppressLint;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;public class RichTextViewActivity extends AppCompatActivity {private WebView webview_intro;      //webview加载富文本//网页加载富文本的限制标签private String CSS_STYLE =" <style> p {color:#FFFFFF;} a {color:#FFFFFF;}  img{max-width:100% !important;height:auto !important}video{max-width:100% !important;height:auto !important}  p span{color:#FFFFFF !important; background-color:#1A1A1A !important; font-size:20px;}</style>";
//    private String CSS_Content = "";//测试数据private String CSS_Content = "<h3><span style=\"color: rgb(245, 245, 245);\">hello world</span></h3><p><span style=\"color: rgb(255, 251, 143);\">阿大声道啊大师大的撒打算的撒打发的股份的回复的后代鼓捣鼓捣 阿打算打打打算的啊大大十多万鹅鹅鹅我热潮中在大大</span></p><p><br></p><p><br></p><p><span style=\"color: rgb(255, 251, 143);\">撒旦教奥斯卡了的骄傲了看得见卡的好拉屎的金卡价saduoiejwrwmflkvnfslvlkaosfjdfms</span></p><p><span style=\"color: rgb(255, 251, 143);\">舒服vhskdjklvnmxmvxsdfsdfsdfjjsj;lrjewklrjkl</span></p><p><img src=\"https://img1.baidu.com/it/u=186439391,629096241&fm=253&fmt=auto&app=120&f=JPEG?w=500&h=740\" alt=\"\" data-href=\"\" style=\"\"/></p><p><br></p><p><br></p><p><span style=\"color: rgb(255, 77, 79);\">结尾。。。。。。asd.asdas撒as大大啊我u哦IE问问瑞荣 &nbsp;1231312313112313132131231</span><div class=\"media-wrap video-wrap\"><video controls=\"\" class=\"media-wrap video-wrap\" src=\"https://images.artvrpro.com/activity%2F1668587203846-7_1.MP4.7_1.MP4\"></video></div></p>";
//    private String CSS_STYLE =" <style> p {color:#FFFFFF;} a {color:#FFFFFF;}  img{max-width:100% !important;height:auto !important}video{max-width:100% !important;height:auto !important}</style>";@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_rich_text_view);webview_intro = findViewById(R.id.webview_intro);initWebViewContent(CSS_Content);}/*** 传入参数为String的时候*/@SuppressLint("NewApi")private void initWebViewContent(String content) {Log.e("colincontent: ", content);WebChromeClient wvcc = new WebChromeClient();WebSettings webSettings = webview_intro.getSettings();webSettings.setJavaScriptEnabled(true);webSettings.setUseWideViewPort(true); // 关键点webSettings.setAllowFileAccess(true); // 允许访问文件webSettings.setSupportZoom(true); // 支持缩放wwebSettings.setLoadWithOverviewMode(true);webSettings.setAppCacheEnabled(true);webSettings.setDatabaseEnabled(true);webSettings.setDomStorageEnabled(true);webSettings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.SINGLE_COLUMN);webSettings.setTextZoom(200);webview_intro.setBackgroundColor(Color.parseColor("#FF1A1A1A"));webview_intro.setWebChromeClient(wvcc);content = content.replaceAll("background-color:#ffffff", "background-color:#1A1A1A");CSS_Content = content;webview_intro.loadDataWithBaseURL(null, CSS_STYLE+getNewContent(content), "text/html", "utf-8", null);webview_intro.setWebViewClient(new WebViewClient(){@Overridepublic void onPageFinished(WebView view, String url) {super.onPageFinished(view, url);// 解决NestedScrollView嵌套WebView底部留白问题
//                        webview_intro.getLayoutParams().height = ViewGroup.LayoutParams.WRAP_CONTENT;//这是我找到的最简单的方法(例如，将文本颜色更改为白色)：view.loadUrl("javascript:document.body.style.setProperty(\"color\", \"white\");");}});}//视频屏幕宽度 解决视频超出屏幕宽度的问题private String getNewContent(String htmlText) {Document doc = Jsoup.parse(htmlText);Elements elements = doc.getElementsByTag("img");for (Element element : elements) {element.attr("width", "100%").attr("height", "auto");}Elements elementsVideo = doc.getElementsByTag("video");for (Element element : elementsVideo) {element.attr("width", "100%").attr("height", "auto");}return doc.toString();}@Overrideprotected void onDestroy() {super.onDestroy();if(webview_intro!=null){    //销毁界面时要释放webview，否则退出页面还会播放视频音频webview_intro.loadUrl("about:blank");webview_intro =null;}}
}

xml：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".RichTextViewActivity"android:background="#101010"><WebViewandroid:id="@+id/webview_intro"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginLeft="10dp"android:layout_marginRight="10dp"android:scrollbars="none"android:visibility="visible"android:focusable="false"android:nestedScrollingEnabled="false"/></RelativeLayout>

这里用的是原生的webview，会有一个问题，就是特殊的视频格式可能会出问题，项目中可以使用腾讯的X5内核的webview 。

效果如下:

分割线=======================================

如果不想用webview加载富文本也可以用富文本编辑器：

 //导入图文编辑api ('com.github.wordpress-mobile.WordPress-Aztec-Android:aztec:v1.3.44')api ('com.github.wordpress-mobile.WordPress-Aztec-Android:glide-loader:v1.3.44')api ('com.github.wordpress-mobile.WordPress-Aztec-Android:wordpress-comments:v1.3.44')api ('com.github.wordpress-mobile.WordPress-Aztec-Android:wordpress-shortcodes:v1.3.44')

private AztecText mAztecText;
protected Aztec aztec;aztec = Aztec.with(mAztecText,new SourceViewEditText(getActivity()),new AztecToolbar(getActivity()),new IAztecToolbarClickListener() {@Overridepublic void onToolbarCollapseButtonClicked() {}@Overridepublic void onToolbarExpandButtonClicked() {}@Overridepublic void onToolbarFormatButtonClicked(@NonNull ITextFormat iTextFormat, boolean b) {}@Overridepublic void onToolbarHeadingButtonClicked() {}@Overridepublic void onToolbarHtmlButtonClicked() {}@Overridepublic void onToolbarListButtonClicked() {}@Overridepublic boolean onToolbarMediaButtonClicked() {return false;}}).setImageGetter(new GlideImageLoader(getActivity())).setOnLinkTappedListener(this)    /*添加超链接点击监听*/.setLinkTapEnabled(true).addPlugin(new WordPressCommentsPlugin(mAztecText)).addPlugin(new CaptionShortcodePlugin(mAztecText)).addPlugin(new HiddenGutenbergPlugin(mAztecText));mAztecText.setKeyListener(null);aztec.getVisualEditor().fromHtml("富文本", false);

XML：

 <org.wordpress.aztec.AztecTextandroid:id="@+id/aztec"style="@style/EditTextTheme"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginLeft="@dimen/dp_16"android:layout_marginRight="@dimen/dp_16"android:focusable="false"android:gravity="top|start"android:imeOptions="flagNoExtractUi"android:paddingEnd="@dimen/dp_16"android:paddingLeft="@dimen/dp_16"android:paddingRight="@dimen/dp_16"android:paddingTop="@dimen/dp_16"android:scrollbars="none"android:visibility="gone"aztec:bulletColor="@color/bulletColor"aztec:bulletMargin="@dimen/dp_6"aztec:bulletPadding="@dimen/dp_5"aztec:codeColor="@color/colorLightBlack"aztec:historyEnable="true"aztec:historySize="10"aztec:linkColor="@color/linkColor"aztec:linkUnderline="true"aztec:quoteBackground="@color/quoteBackground"aztec:quoteColor="@color/quoteColor"aztec:quoteMargin="@dimen/dp_0"aztec:quotePadding="@dimen/dp_10"aztec:quoteWidth="@dimen/dp_5"aztec:textColor="@color/colorLightBlack"/>