TextView中html格式表情的解析方法

先上图,比如微博的text数据:



解析的格式类似:
<img alt=[允悲] src=\"//h5.sinaimg.cn/m/emoticon/icon/default/d_yunbei-9aa3c436a4.png\" style=\"width:1em; height:1em;\" />
对textview的设置:

        holder.tv_text.setText(Html.fromHtml(statusBean.getText(), new MyImageGetter(context, holder.tv_text), null));

其中MyImageGetter()为:
采用Glide异步加载,因为表情是常用图,设置本地磁盘缓存,图片位置可以自己调整


/**
 * Created by kusunoki on 2020/5/23 0023 14:30.
 * 用于加载textView中表情图片
 */
public class MyImageGetter implements Html.ImageGetter {

    private URLDrawable urlDrawable = null;
    private TextView textView;
    private Context context;

    public MyImageGetter(Context context, TextView textView) {
        this.textView = textView;
        this.context = context;
    }

    @Override
    public Drawable getDrawable(final String source) {
        urlDrawable = new URLDrawable();
        String url; // 因为渣浪的表情url有时候没有加http头,所以有这个判断
        if (!source.contains("http")){
            url = "https:" + source;
        }else {
            url = source;
        }

        Glide.with(context)
                .asBitmap()
                .load(url)
                .diskCacheStrategy(DiskCacheStrategy.ALL)
                .into(new CustomTarget<Bitmap>() {
                    @Override
                    public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) {
                      // 这部分是修改bitmap图片的大小,返回来的表情太小了
                        Matrix matrix = new Matrix();
                        matrix.postScale(1.5f,1.5f);
                        Bitmap newBitmap = Bitmap.createBitmap(resource,0,0,resource.getWidth(),resource.getHeight(),matrix,false);
                        urlDrawable.bitmap = newBitmap;
                        urlDrawable.setBounds(0, 0, newBitmap.getWidth(), newBitmap.getHeight());
                        textView.invalidate();
                    }

                    @Override
                    public void onLoadCleared(@Nullable Drawable placeholder) {
                    }
                });
        return urlDrawable;
    }

    public class URLDrawable extends BitmapDrawable {
        public Bitmap bitmap;

        @Override
        public void draw(Canvas canvas) {
            super.draw(canvas);
            if (bitmap != null) {
                canvas.drawBitmap(bitmap, 0, 0, getPaint());
            }
        }
    }
}

解析超链接可参考:
//www.greatytc.com/p/e27532aa7cb2

自己写的微博html版@的超链接用户跳转:

/**
 * Created by kusunoki on 2020/5/23 0023 21:08.
 * 参考//www.greatytc.com/p/de71858168cd
 * 和//www.greatytc.com/p/e27532aa7cb2
 */
public class MyHTML {
    static private void setLinkClickable(final SpannableStringBuilder clickableHtmlBuilder,
                                  final URLSpan urlSpan, Context context, TextView textView) {
        int start = clickableHtmlBuilder.getSpanStart(urlSpan);
        int end = clickableHtmlBuilder.getSpanEnd(urlSpan);
        int flags = clickableHtmlBuilder.getSpanFlags(urlSpan);
        ClickableSpan clickableSpan = new ClickableSpan() {

            @Override
            public void onClick(View view) {
                String url = "https://m.weibo.cn/" + urlSpan.getURL();
                RequestQueue queue = VolleySingleton.getinstance(context.getApplicationContext()).getRequestQueue();
                StringRequest stringRequest = new StringRequest(
                        Request.Method.GET,
                        url,
                        new Response.Listener<String>() {
                            @Override
                            public void onResponse(String response) {
                                String p = "(?<=value\":\")\\d*?(?=\")";
                                Pattern pattern = Pattern.compile(p);
                                Matcher m = pattern.matcher(response);
                                if(m.find()){
                                    String userID = m.group(0);
                                    NavController navController = Navigation.findNavController(textView);
                                    Bundle bundle = new Bundle();
                                    bundle.putString("userID", userID);
                                    navController.navigate(R.id.action_global_fragment_userDetail,bundle);
                                }else {
                                    Log.e("API","@信息读取失败1");
                                }
                            }
                        },
                        new Response.ErrorListener() {
                            @Override
                            public void onErrorResponse(VolleyError error) {
                                Log.e("API","@信息读取失败2");
                            }
                        }
                );
                Log.i("HTML","点击" + urlSpan.getURL());
                queue.add(stringRequest);
            }

            @Override
            public void updateDrawState(TextPaint ds) {
                ds.setUnderlineText(false);
                ds.setColor(Color.parseColor("#1111ff")); // 超链接颜色
            }
        };
        clickableHtmlBuilder.setSpan(clickableSpan, start, end, flags);
        clickableHtmlBuilder.removeSpan(urlSpan);
    }

    static public CharSequence getClickableHtml(String html, Context context, TextView textView) {
        Spanned spannedHtml = HtmlCompat.fromHtml(html, HtmlCompat.FROM_HTML_MODE_LEGACY,
                new MyImageGetter(context,textView), null);
        SpannableStringBuilder clickableHtmlBuilder = new SpannableStringBuilder(spannedHtml);
        URLSpan[] urls = clickableHtmlBuilder.getSpans(0, spannedHtml.length(), URLSpan.class);
        for (final URLSpan span : urls) {
            // 判断一下链接是否需要处理
            if (span.getURL().substring(0,3).equals("/n/")){
            setLinkClickable(clickableHtmlBuilder, span,context,textView);
            }
        }

        return clickableHtmlBuilder;
    }
}
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