wx.saveImageToPhotosAlbum保存图片在在苹果手机没有问题，但在安卓手机的相册找不到

代码如下

wx.cloud.downloadFile({

fileID: this.data.imageSrc,

success: res => {

// get temp file path

console.log(res.tempFilePath)

wx.saveImageToPhotosAlbum({

filePath: res.tempFilePath,

success: res => {

console.log(res)

wx.showToast({

title: '已保存到相册'

})

}

})

},