Android studio navigation drawer with fragment or activities

Question

I'm trying to develop an application using the Navigation drawer template of Android Studio. So, I created a new project using this template. But when I run the program and click on a menu item, the view doesn't change. I searched everywhere on internet, but I didn't see how I can handle this.

This is the code provided by Android Studio:

 public boolean onNavigationItemSelected(MenuItem item) {
    // Handle navigation view item clicks here.

    int id = item.getItemId();

    if (id == R.id.nav_camara) {


    } else if (id == R.id.nav_gallery) {

    } else if (id == R.id.nav_slideshow) {

    } else if (id == R.id.nav_manage) {

    } else if (id == R.id.nav_share) {

    } else if (id == R.id.nav_send) {

    }

    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    drawer.closeDrawer(GravityCompat.START);
    return true;
}

What I want to achieve is to replace the current view with the appropriate view for the menu item clicked.

Is Fragment the best way to do this or should I create a different activity for each menu item?

Answer 1

In your case adding fragment will be the best solution.

create a fragment BlankFragment.java

public class BlankFragment extends Fragment {

    public BlankFragment() {
        // Required empty public constructor
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_blank, container, false);
    }

}

and create fragment_black.xml

    <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.above_inc.shyam.drawer.BlankFragment">

    <!-- TODO: Update blank fragment layout -->
    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="@string/hello_blank_fragment" />

</FrameLayout>

now replace your method

public boolean onNavigationItemSelected(MenuItem item) {
    // Handle navigation view item clicks here.
    int id = item.getItemId();

    Fragment fragment = null;
    if (id == R.id.nav_camera) {
        // Handle the camera action
        fragment = new BlankFragment();
    } else if (id == R.id.nav_gallery) {

    } else if (id == R.id.nav_slideshow) {

    } else if (id == R.id.nav_manage) {

    } else if (id == R.id.nav_share) {

    } else if (id == R.id.nav_send) {

    }

    if (fragment != null) {
        FragmentManager fragmentManager = getSupportFragmentManager();
        fragmentManager.beginTransaction()
                .replace(R.id.frame_container, fragment).commit();

    }
    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    drawer.closeDrawer(GravityCompat.START);
    return true;

}

add below code in your content_main.xml

 <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context="com.above_inc.shyam.drawer.MainActivity"
    tools:showIn="@layout/app_bar_main">


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

you can also add more fragment to other options same as camera in above code

Answer 2

Fragment will be the best way if you want your navigation drawer to be shown on the next screen when you click on the menu item.

If you will use activity then navigation drawer will not be shown unless you make a BaseActivity which extends Navigation Drawer and use everywhere. In this case you have to change acitivty transition animation too as new activity will pop up after clicking on the menu which may look odd.