请问v-for如何遍历双重对象
{"apps": [ { "items": [[{ "itemtype": "imageplayer", "path0": "/mnt/sdcard/data/1.jpg", "len": 30.0 }], [{ "itemtype": "imageplayer", "path": "/mnt/sdcard/data/1.jpg", "len": 30.0 }], [{ "itemtype": "videoplayer", "path": "/mnt/sdcard/data/1.mp4" }]] }, { "items": [[{ "itemtype": "imageplayer", "path0": "/mnt/sdcard/data/1.jpg", "len": 30.0 }], [{ "itemtype": "imageplayer", "path": "/mnt/sdcard/data/1.jpg", "len": 30.0 }], [{ "itemtype": "videoplayer", "path": "/mnt/sdcard/data/1.mp4" }]] }]}