切换按钮未打开导航抽屉

Question

画出红线以显示橙色线应继续前进的地方。

搜索类似的问题后，我找不到解决问题的方法。 我有一个切换按钮显示在我的活动中，但是当我按下它时，它不会打开导航抽屉（如果我滑动手指会打开它）。

*活动中显示切换按钮（工具栏为透明）

OnCreate和onOptionsItemSelect

ActionBarDrawerToggle toggle;
DrawerLayout drawer;
NavigationView navigationView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = findViewById(R.id.my_toolbar);
    setSupportActionBar(toolbar);

    drawer = findViewById(R.id.drawer_layout);

    toggle = new ActionBarDrawerToggle
            (
                    this,
                    drawer,
                    R.string.navigation_drawer_open,
                    R.string.navigation_drawer_close
            )
    {
    };

    drawer.addDrawerListener(toggle);
    toggle.syncState();
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    getSupportActionBar().setHomeButtonEnabled(true);
    getSupportActionBar().setTitle("");
    toggle.getDrawerArrowDrawable().setColor(getResources().getColor(R.color.colorPrimaryDark));

    FloatingActionButton fab =   findViewById(R.id.action_btn);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

            Intent intent = new Intent(getApplicationContext(), NewEventActivity.class);
            startActivity(intent);
            /*Intent intent = new Intent(getApplicationContext(), testes.class);
            startActivity(intent);*/

        }
    });

    navigationView = findViewById(R.id.navigation_view);
    navigationView.setNavigationItemSelectedListener(this);

}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    if(toggle.onOptionsItemSelected(item)) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

XML代码：

<android.support.v4.widget.DrawerLayout 
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"
android:id="@+id/drawer_layout">


<android.support.design.widget.CoordinatorLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">

<RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    <android.support.v7.widget.Toolbar
        android:id="@+id/my_toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        app:title=""
        android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

    </RelativeLayout>



    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:id="@+id/wrapper_layout">


    </LinearLayout>

</RelativeLayout>

<android.support.design.widget.FloatingActionButton
    android:id="@+id/action_btn"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom|end"
    android:layout_margin="@dimen/fab_margin"
    android:backgroundTint="#FE7D4B"
    app:srcCompat="@drawable/ic_add" />

</android.support.design.widget.CoordinatorLayout>

<android.support.design.widget.NavigationView
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    app:menu="@menu/drawer_menu"
    android:layout_gravity="start"
    android:id="@+id/navigation_view"
    >

</android.support.design.widget.NavigationView>

</android.support.v4.widget.DrawerLayout>