textview加载html glide,TextView加载HTML，文字和图片

原文出处链接：《TextView加载HTML，文字和图片》

工具类：

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() {

@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());//不加这句显示不出来图片，原因不详

}

});

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);

//设置想要的大小

int newWidth = width;

int newHeight = height;

//计算压缩的比率

float scaleWidth = ((float) newWidth) / width;

float scaleHeight = ((float) newHeight) / height;

//获取想要缩放的matrix

Matrix matrix = new Matrix();

matrix.postScale(scaleWidth, scaleHeight);

//获取新的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;

}

}

}

使用方法：

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

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