How to Intent From Activity to Fragment?

Question

Hello Everyone, On my main Activity, I have some menus. What I want to do is that, if a user click on the menu, he/she must navigate, or must be landed on a Fragment.

I know from Activity to Activity is just pass an Intent eg: Intent intent New Intent (Activity1.this. Activity2.class); And From Fragment to Activity eg: Intent intent New Intent (getContext() Activity2.class);

But how to Intent from an Activity to a Fragment? Or have to Navigate from An Activity to a Fragment? Is that possible ?

Does anyone have an idea how to do that ? thanks a lot.

https://stackoverflow.com/questions/36100187/how-to-start-fragment-from-an-activity — John Joe, Mar 14 '20 at 11:44

score 0 · Answer 1 · answered Mar 14 '20 at 11:58

Try this,
   Fragment fragment = new Fragment_class();
    FragmentManager fragmentManager = getFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        fragmentTransaction.replace(R.id.container_body, fragment).addToBackStack(null);
        fragmentTransaction.commit();

score 0 · Answer 2 · answered Mar 14 '20 at 12:06

The intent is only used with Activities, Services, and BroadcastReceivers. A fragment as its name suggests is part of an Activity that adds the dynamic content replacement to it.

Your options:

A parent activity with two fragments that get replaced dynamically
Two Activities that each have a fragment inside.
Using Android Navigation Component which handles most of the transactions.

When Working with fragments you have two options:

Using Static Fragments

<fragment
    android:name="com.example.myapp.FragmentA"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

Dynamic fragment replacement

Inside Activity's XML

<FrameLayout
    android:id="@+id/frameLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

Inside Activity's Java File:

FragmentManager manager = getFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
transaction.replace(R.id.frameLayout, SecondFragment());
transaction.commit();

You can also use this component as part of the android JetPack Android Navigation Component

How to Intent From Activity to Fragment?

2 Answers2