How to call a function right after another function has executed without button onpress - react-native

Question

I have two functions and I am trying to call GetReceipt when the button (with uploadphoto function) has been clicked and right after the UploadPhoto function like getting data right after uploading a photo.
I tried putting this.GetReceipt() inside the UploadPhoto() function somehow it does not work but if i separate them into two different buttons both functions work perfectly.
Here is the code:
UploadPhoto=(pickedImagePath)=> {
var pickedImagePath = this.state.pickedImagePath;
console.log(pickedImagePath);
var APIURL="http://10.0.2.2/api/postform.php";
let uriParts = pickedImagePath.split('/');
let image = uriParts[uriParts.length - 1];
var ImageData= new FormData();
ImageData.append('photo', {
uri:pickedImagePath,
name: image,
type: 'image/jpeg'
})
fetch(APIURL,
{
headers:{
'Accept':'application/json',
'Content-Type':'multipart/form-data'
},
method:'POST',
body: ImageData
})
.then((response)=>
{
console.log('succ ')
console.log(response)
})
.catch((error)=>
{
console.log('err ')
console.log(error)
}
)
}
GetReceipt=()=> {
var title = this.state.title;
var amount = this.state.amount;
var transactionType = this.state.transactionType;
var note = this.state.note;
var date = this.state.date;
var APIURL="http://10.0.2.2/api/getform.php";
var headers2={
'Accept':'application/json',
'Content-Type':'application.json'
}
fetch(APIURL,
{
method:'POST',
headers: headers2,
})
.then((response)=>response.text())
.then((response)=>
{
// this.setState({array:response});
this.setState({title:response[3]});
this.setState({amount:response[0]});
this.setState({date:response[1]});
this.setState({note:response[2]});
// this.setState({results:response});
console.log("results:",response[2]);
console.log("merchant:",this.state.title);
console.log("results:",response);
})
.catch((error)=>
{
alert("Error"+error);
}
)
}