How can I wait for Firestore data read to finish before executing next lines of code in Android

Asked Mar 26 '20 at 06:35

Active Mar 26 '20 at 07:06

Viewed 65 times

The firestore get method is asynchronous and it doesn't wait for all the data to be retrieved before executing the next lines of code. In my android app it requires all the data to be present before executing the next steps..

This is not happening and I am getting a nullPointerException because of the next step is executed before even any data is retrieved.

How can I make the code synchronous so that it will wait till all the data is retrieved and execute next steps after that. As there is a small amount of data I don't care about making the thread wait for the retrival.

edited Mar 26 '20 at 07:06

MMG

3,226
5
16
43

asked Mar 26 '20 at 06:35

prateikjena

See my answer for this question: https://stackoverflow.com/questions/60520000/ – MMG Mar 26 '20 at 06:38
I haven't your code but I tell you that you should put your code after you are sure data is read. – MMG Mar 26 '20 at 06:39
You can put the code in `then` block which you want to execute after Firebase work is done. – gegobyte Mar 26 '20 at 07:08
Please check the duplicate to see how you can wait for the data. – Alex Mamo Mar 26 '20 at 11:24

How can I wait for Firestore data read to finish before executing next lines of code in Android

0 Answers0