How to set menu to an AppBarLayout

Issue

I’m new to programming, and I want to add a settings menu button.

Like on the picture, my app doesn’t show the three dots button.

MainActivity.java :

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        SectionsPagerAdapter sectionsPagerAdapter  new SectionsPagerAdapter(this, getSupportFragmentManager());
        ViewPager viewPager  findViewById(R.id.view_pager);
        viewPager.setAdapter(sectionsPagerAdapter);
        TabLayout tabs  findViewById(R.id.tabs);
        tabs.setupWithViewPager(viewPager);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.settings, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
        switch (item.getItemId()) {
            case R.id.vueSatellite:
                Toast.makeText(this, "Hi", Toast.LENGTH_SHORT).show();
                return true;
            default:
                return super.onOptionsItemSelected(item);
        }
    }
}

activity_main.xml :

<?xml version"1.0" encoding"utf-8"?>

<androidx.coordinatorlayout.widget.CoordinatorLayout 
    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"
    tools:context".MainActivity">

    <androidx.viewpager.widget.ViewPager
        android:id"@+id/view_pager"
        android:layout_width"match_parent"
        android:layout_height"match_parent"
        app:layout_behavior"@string/appbar_scrolling_view_behavior" />

    <com.google.android.material.appbar.AppBarLayout
        android:layout_width"match_parent"
        android:layout_height"wrap_content"
        android:theme"@style/AppTheme">

        <TextView
            android:id"@+id/title"
            android:layout_width"wrap_content"
            android:layout_height"wrap_content"
            android:gravity"center"
            android:minHeight"?actionBarSize"
            android:padding"@dimen/appbar_padding"
            android:text"@string/app_name"
            android:textColor"@color/colorAccent"
            android:textAppearance"@style/TextAppearance.Widget.AppCompat.Toolbar.Title" />

        <com.google.android.material.tabs.TabLayout
            android:id"@+id/tabs"
            android:layout_width"match_parent"
            android:layout_height"wrap_content"
            android:background"@color/White"
            app:tabTextColor"@color/colorAccent"/>
    </com.google.android.material.appbar.AppBarLayout>

</androidx.coordinatorlayout.widget.CoordinatorLayout>

settings.xml :

    <?xml version"1.0" encoding"utf-8"?>

    <menu xmlns:android"http://schemas.android.com/apk/res/android"
        xmlns:app"http://schemas.android.com/apk/res-auto">

        <item android:id"@+id/vueSatellite"
            android:title"@string/item_vue_satellite"
            app:showAsAction"never"/>

    </menu>

What is my mistake ?

Or what do I have to add?

Tell me if there is missing information like the file AndroidManifest.xml for example.

Thanks

Solution

In your Activity just add

Toolbar toolbar  (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);

Hope it works.

Answered By – unaisulhadi

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