how to write onBackPressed() in fragment kotlin-CodePudding

I created 4 fragments in my dashboardactivity

1, 2,3,4 And on Back Button Press I must to return from 4 to 1, 3 to 1, 2 to 1

What is the best practise to do that?

My app must not return recently open fragment like 4 to 3, 3 to 4

CodePudding user response：

override on onBackPressed() method in activity and write this code snippet. I think solve your problem

 @Override fun onBackPressed() {
    while (supportFragmentManager.getBackStackEntryCount() > 0) {
                if (supportFragmentManager.findFragmentById(R.id.container) is Fragment1) {
                    return
                }
                getSupportFragmentManager().popBackStackImmediate()
            }
    
    }

CodePudding user response：

alternatively you can use Jetpack Navigation, it provides you with a GUI that you can see all the destination in your navigation structure.

https://developer.android.com/guide/navigation? gclid=Cj0KCQiA15yNBhDTARIsAGnwe0UOz85aXEUlPqKU7VnbeGQKAwGufnfxbxTZDNyj6670Oxu3PbkyjtoaAnk4EALw_wcB&gclsrc=aw.ds