微信小程序导出的蓝牙配置app，安卓手机上没显示给app蓝牙权限选项，无法打开蓝牙，但是在微信小程序里可以正常使用蓝牙功能，这是什么问题导致的？

  // 搜索蓝牙设备
  Search: function () {
    const that = this
    if (!that.data.searching) {
      wx.closeBluetoothAdapter({
        complete: function (res) {
          wx.openBluetoothAdapter({
            success: function (res) {
              wx.getBluetoothAdapterState({
                success: function (res) {
                  console.log('蓝牙适配器状态:', res)
                }
              })
              wx.startBluetoothDevicesDiscovery({
                allowDuplicatesKey: false,
                success: function (res) {
                  that.setData({
                    searching: true,
                    devicesList: [],
                    IsConnectedHidden: true
                  })
                  // 清空原始设备存储列表
                  that.data.BleDeviceList = []
                }
              })
            },
            fail: function (res) {
              wx.showModal({
                title: '提示',
                content: '请检查手机蓝牙是否打开',
                showCancel: false,
                success: function () {
                  that.setData({ searching: false })
                }
              })
            }
          })
        }
      })
    } else {
      wx.stopBluetoothDevicesDiscovery({
        success: function () {
          that.setData({ searching: false })
        }
      })
    }
  },