Html中加入文字和圖片

TextView控件中的html語句中添加文字和圖片

1、創建添加png/jpg必要的類

 
public class ImageGetterUtils {
    public static MyImageGetter getImageGetter(Context context, TextView textView) {
        MyImageGetter myImageGetter = new MyImageGetter(context, textView);
        return myImageGetter;
    }
 
    public static 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();
            Glide.with(context).asBitmap().load(source).into(new SimpleTarget<Bitmap>() {
                @Override
                public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) {
                    urlDrawable.bitmap = changeBitmapSize(resource);
                    urlDrawable.setBounds(0, 0, changeBitmapSize(resource).getWidth(), changeBitmapSize(resource).getHeight());
                    textView.invalidate();
                    textView.setText(textView.getText());//不加這句顯示不出來圖片，原因不詳
                }
            });
            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());
                }
            }
        }
 
        private Bitmap changeBitmapSize(Bitmap bitmap) {
            int width = bitmap.getWidth();
            int height = bitmap.getHeight();
            Log.e("width", "width:" + width);
            Log.e("height", "height:" + height);
            //設置想要的大小
            int newWidth = width;
            int newHeight = height;
            //計算壓縮的比率
            float scaleWidth = ((float) newWidth) / width;
            float scaleHeight = ((float) newHeight) / height;
            //獲取想要縮放的matrix
            Matrix matrix = new Matrix();
            matrix.postScale(scaleWidth, scaleHeight);
            //獲取新的bitmap
            bitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);
            bitmap.getWidth();
            bitmap.getHeight();
            Log.e("newWidth", "newWidth" + bitmap.getWidth());
            Log.e("newHeight", "newHeight" + bitmap.getHeight());
            return bitmap;
        }
    }
}

2、textView控件調用

textview.setText(Html.fromHtml(content,new ImageGetterUtils.MyImageGetter(this,textview),null));

END

下章整理編輯器