OnBackPressed Activity to MainActivity Fragment

Asked Nov 05 '20 at 07:24

Active Nov 05 '20 at 07:36

Viewed 136 times

I have Requirement to OnBackPressed From Activity to MainActivity Fragment. What I have Done to achieve this is Implement a Simple super.onbackPressed. This super.onbackPressed Bring Activity to Previous Activity. I have Also done this, But My Requiremts does not matched to this, i.e OnBackpressed Activity to MainActivity Fragment..

   override fun onBackPressed() {
    val builder: AlertDialog.Builder = AlertDialog.Builder(this)
    builder.setMessage(getString(R.string.doyouwanttoclose))
        .setCancelable(false)
        .setTitle("Alert!!")
        .setNegativeButton("No",
            DialogInterface.OnClickListener { dialog, id -> dialog.cancel() })
        .setPositiveButton("Yes",
            DialogInterface.OnClickListener { dialog, id -> this@MakeStylishActivity.finish() })
    val alert: AlertDialog = builder.create()
    alert.show()
}

I have Also Implemented these Solutions available on Stackoverflow but doesn't worked for me On Back Pressed in Android Fragments

Fragment pressing back button

How to detect when back button pressed in fragment android?..

I am Confused How this must Be Done, Or this is Not Possible..

edited Nov 05 '20 at 07:36

asked Nov 05 '20 at 07:24

Usman Ali

please explain more i did not understand what you want to do go from X to y ? – Arvin Rezaei Nov 05 '20 at 07:51
@Arvin Rezaei The Scenario be Like, I have an Activity, That Activity contains a Fragment, From that Fragment It opens two activities, activity1 and 2,.. What i want is onBackPress Bring to Fragment on Main Activity From where It Started – Usman Ali Nov 05 '20 at 07:53
cant you just start the main activity with intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT); flag ? and then clearbackstack? – Arvin Rezaei Nov 05 '20 at 07:56
@ArvinRezaei How this would be donw – Usman Ali Nov 05 '20 at 07:57
– Arvin Rezaei Nov 05 '20 at 07:59
then start your main actiivty normaly – Arvin Rezaei Nov 05 '20 at 08:00
@ArvinRezaei Where I need to add this? – Usman Ali Nov 05 '20 at 08:01
1

do it in your manifest , read about activity task https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwiJ3PKi-OrsAhWB26QKHXnHAfsQFjAAegQIDBAC&url=https%3A%2F%2Fdeveloper.android.com%2Fguide%2Fcomponents%2Factivities%2Ftasks-and-back-stack&usg=AOvVaw05TSZVp1PLj723QdVVzJML – Arvin Rezaei Nov 05 '20 at 08:02
It Does not work, It is opening slowly – Usman Ali Nov 05 '20 at 08:04
@ArvinRezaei It is Giving Error, as It is not Run App – Usman Ali Nov 05 '20 at 08:05

OnBackPressed Activity to MainActivity Fragment

0 Answers0