ChooseMediaOption chooseMedia = new ChooseMediaOption {

            camera="back" ,

            complete=OnchooseMediaGeneral_complete_CallbackResult ,

            fail=OnchooseMediaGeneral_fail_CallbackResult ,

            mediaType=new string[1] { "image" } ,

            //sizeType:['original', 'compressed']

            sizeType=new string[1] { "compressed" } ,

            count=1,

            sourceType=new string[2] { "camera", "album" } ,

            success=(result) =>{ },

        };

        WX.ChooseMedia(chooseMedia);

模拟器不报错，真机预览报json解析错误，Can't assign value '29076' to double