android 解析html 图文混排

来源：互联网发布：狗狗听懂人说话知乎编辑：程序博客网时间：2024/05/29 10:07

public class MyImageGetter implements Html.ImageGetter {    WeakReference<TextView> mTextViewReference;    Context mContext;    public MyImageGetter(Context context, TextView textView) {        mContext = context.getApplicationContext();        mTextViewReference = new WeakReference<TextView>(textView);    }    @Override    public Drawable getDrawable(String url) {        URLDrawable urlDrawable = new URLDrawable(mContext);        // 异步获取图片，并刷新显示内容        new ImageGetterAsyncTask(url, urlDrawable).execute();        return urlDrawable;    }    public class ImageGetterAsyncTask extends AsyncTask<String, Void, Drawable> {        WeakReference<URLDrawable> mURLDrawableReference;        String mUrl;        public ImageGetterAsyncTask(String url, URLDrawable drawable) {            mURLDrawableReference = new WeakReference<URLDrawable>(drawable);            mUrl = url;        }        @Override        protected Drawable doInBackground(String... params) {            // 下载图片，并且使用缓存            try {                Bitmap  bitmap = Glide.with(mContext).load(mUrl).asBitmap().centerCrop().into(100,100).get();                BitmapDrawable bitmapDrawable = new BitmapDrawable(mContext.getResources(), bitmap);                Rect bounds = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());                if (mURLDrawableReference.get() != null) {                    mURLDrawableReference.get().setBounds(bounds);                }                bitmapDrawable.setBounds(bounds);                return bitmapDrawable;            } catch (Exception e) {                e.printStackTrace();                return null;            }        }        @Override        protected void onPostExecute(Drawable result) {            if (null != result) {                if (mURLDrawableReference.get() != null) {                    mURLDrawableReference.get().drawable = result;                }                if (mTextViewReference.get() != null) {                    // 加载完一张图片之后刷新显示内容                    mTextViewReference.get().setText(mTextViewReference.get().getText());                }            }        }    }    public class URLDrawable extends BitmapDrawable {        protected Drawable drawable;        public URLDrawable(Context context) {            // 设置默认大小和默认图片            Rect bounds = new Rect(0, 0, 100, 100);            setBounds(bounds);            drawable = context.getResources().getDrawable(R.drawable.morentu);            drawable.setBounds(bounds);        }        @Override        public void draw(Canvas canvas) {            if (drawable != null) {                drawable.draw(canvas);            }        }    }}

public class MyTagHandler implements Html.TagHandler {    private Context mContext;    public MyTagHandler(Context context) {        mContext = context.getApplicationContext();    }    @Override    public void handleTag(boolean opening, String tag, Editable output, XMLReader xmlReader) {        // 处理标签<img>        if (tag.toLowerCase(Locale.getDefault()).equals("img")) {            // 获取长度            int len = output.length();            // 获取图片地址            ImageSpan[] images = output.getSpans(len-1, len, ImageSpan.class);            String imgURL = images[0].getSource();            // 使图片可点击并监听点击事件            output.setSpan(new ClickableImage(mContext, imgURL), len-1, len, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);        }    }    private class ClickableImage extends ClickableSpan {        private String url;        private Context context;        public ClickableImage(Context context, String url) {            this.context = context;            this.url = url;        }        @Override        public void onClick(View widget) {            // 进行图片点击之后的处理            ToastUtil.showToast(context,"111",0);        }    }}

 MyImageGetter imageGetter = new MyImageGetter(this,text_reward_description );        MyTagHandler tagHandler = new MyTagHandler(this);        text_reward_description.setText(Html.fromHtml(task.getAward_desc(),imageGetter,tagHandler));        text_reward_description.setMovementMethod(LinkMovementMethod.getInstance());

阅读全文

0 0