如何获取要在TextInput上显示的检索firebase值并更新详细信息react-native

I'm trying to retrieve the values from firebase-database and set the values to display on the TextInput, so users can edit the values there and press the button to update the values back to firebase. I have tried all the ways but it still not working, is there anyone can help me to solve this. I'm trying to retrieve the values from firebase