how to delete whole flatlist in one go and whole firestore collection

The solution for “how to delete whole flatlist in one go and whole firestore collection” can be found here. The following code will assist you in solving the problem.

deleting whole flatlist in one go using firestore 

filter data=(_item)=>{
this.setState({users: this.state.users.filter(item => item. Key=== _item)});
console.log(this.state.favorites) }
call this function in button deleteall code given below
{ async function massDeleteUsers() {
// Get all users
const usersQuerySnapshot = await firestore().collection(‘user’).get(
// Create a new batch instance
const batch = firestore().batch();
usersQuerySnapshot.forEach(documentSnapshot => {
batch.delete(documentSnapshot.ref); });
return batch.commit();}
massDeleteUsers().then(() =>{
console.log(‘All users deleted in a single batch operation.’)}) }}>
so this will delete whole flatlist in on go and delete whole firestore collection

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