android设置本地图片到imageview

通过将图片路径转换成为bitmap 或者uri，然后设置到控件上

String s = Environment.getExternalStorageDirectory().getAbsolutePath() + "/downdown/123.jpg";

        Bitmap bitmap = BitmapFactory.decodeFile(s);
        mImageview.setImageBitmap(bitmap);

        
        Uri uri = Uri.fromFile(new File(s));

        mImageview.setImageURI(uri);