how to android hardware back button

How-to Discussions
1

hi guys, is fuse provide any solution to handle hardware back button? or we need to use foreign code?

2

<OnBackButton></OnBackButton> https://www.fusetools.com/learn/reference/fuse/triggers/onbackbutton

and for other buttons:

<OnKeyPress Key="MenuButton"></OnKeyPress> https://www.fusetools.com/learn/reference/fuse/triggers/onkeypress

3

Hi,

Is it also possible to run a js function on back button?

4

I believe so:

<OnBackButton>
  <CallBack Handler="{someFunction}" />
</OnBackButton>

and in your js:

function someFunction() {
 // do stuff
}

module.exports = {
  someFunction: someFunction
}

You might not even need the CallBack a Handler on the OnBackButton should work as well

5 
<OnBackButton Handler="{someFunction}" />

Works like a charm! thanks

6

Is it also possible to close the app OnBackButton?

7

There’s a user project showing how you can do that here: https://www.fusetools.com/community/forums/permalink/82984c7c-7084-46ca-886f-d2b095246fd9