I'm using navigation to navigate between fragments.

And I have a DialogFragment, it can called from from many fragment like this:

 val dialog = FragmentDialog
 dialog.show(childFragmentManager, "home_fragment")

And I want to know dialogfragment called by which fragment

I tried with FragmentManager.backStackEntryCount but it's seem doesn't work

Can I have a advice for this problem ???

CodePudding user response：

There are multiple ways to do this ..

1. You can just Pass a key in Bundle to your DialogFragment to check which Fragment opened it ..

2. If your Dialog fragment a attached to a fragment in each case you can just use getParentFragment() . getParentFragment() will return the instance of that fragment. If its attached to activity then getParentFragment() will be null so watch out for this case also .

3. you can also use getTag() from where it was open byt passing different tags to transaction .

CodePudding user response：

can you explain why you need to know dialogfragment called by which fragment

 fun showInAppDialog() {
        val mInAppFragment: InAppScreenFragmentDialog = 
        InAppScreenFragmentDialog.instance
        supportFragmentManager.beginTransaction().add(mInAppFragment, 
        "IN_APP_DIALOG")
        .commitAllowingStateLoss()
    
    }

  private fun dismissInAppDialog() {
        if (isFinishing) return
        val manager: FragmentManager = supportFragmentManager
        val mInAppFragment: InAppScreenFragmentDialog? =
            manager.findFragmentByTag("IN_APP_DIALOG") as InAppScreenFragmentDialog?
        if (mInAppFragment!= null) {
            supportFragmentManager.beginTransaction().remove(mInAppFragment).commitAllowingStateLoss()
        }
}