{
  "normalView": {
    "type": "frame",
    "width": "match_parent",
    "height": "match_parent",
    "elements": [
      {
        "id": "image_bg",
        "type": "image",
        "width": "match_parent",
        "height": "match_parent",
        "src": "#CC000000",
        "layout_gravity" : "center"
      },
      {
        "id": "image2",
        "type": "image",
        "width": "1100",
        "height": "1080",
        "src": "${extra.bgPic}",
        "layout_gravity" : "center"
      }
    ]
  }
}