chooseImg(count, sizeType, sourceType) {
        FN.Loading(1, '上传中')
        if (!count) count = 1
        if (!sourceType) sourceType = ['album', 'camera']
        return new Promise((resolve, reject) => {
            wx.chooseMedia({

                count,

                sourceType,

                mediaType: ['image', 'video'],

                success(res) {

                    console.log(res)

                    resolve(res)

                },

                fail(res) {

                    reject(res)

                }

            })

        })

    },