Peter Sun Peter Sun - 3 months ago 20
Android Question

Android Navigation Drawer not slide out

I am messing around with the Material Navigation Drawer, but its not sliding out. When I press the top left drawer icon, the Navigation Drawer does not pop out. I can't figure out what I am missing.

It slides out correctly when I swipe left to right on the screen. But it doesn't show up by clicking the drawer icon at the top left corner.

Here is part of my Activity:

public class MainActivity extends AppCompatActivity {
private DrawerLayout drawerLayout;
private Toolbar toolbar;
private SectionsPagerAdapter mSectionsPagerAdapter;
private ViewPager mViewPager;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
// Create the adapter that will return a fragment for each of the three
// primary sections of the activity.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());

// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.container);
mViewPager.setAdapter(mSectionsPagerAdapter);

initNavigationDrawer();
}

public void initNavigationDrawer() {

NavigationView navigationView = (NavigationView)findViewById(R.id.navigation_view);
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(MenuItem menuItem) {

int id = menuItem.getItemId();

switch (id){
case R.id.home:
Toast.makeText(getApplicationContext(),"Home", Toast.LENGTH_SHORT).show();
drawerLayout.closeDrawers();
break;
case R.id.settings:
Toast.makeText(getApplicationContext(),"Settings",Toast.LENGTH_SHORT).show();
break;
case R.id.logout:
finish();
}
return true;
}
});

View header = navigationView.getHeaderView(0);
TextView tv_email = (TextView)header.findViewById(R.id.tv_email);
tv_email.setText("raj.amalw@learn2crack.com");
drawerLayout = (DrawerLayout)findViewById(R.id.drawer);

ActionBarDrawerToggle actionBarDrawerToggle = new ActionBarDrawerToggle(this,drawerLayout,toolbar,R.string.drawer_open,R.string.drawer_close){

@Override
public void onDrawerClosed(View v){
super.onDrawerClosed(v);
}

@Override
public void onDrawerOpened(View v) {
super.onDrawerOpened(v);
}
};
drawerLayout.addDrawerListener(actionBarDrawerToggle);
actionBarDrawerToggle.syncState();
}
}


Here is the activity_main:

<?xml version="1.0" encoding="utf-8"?>
<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:id="@+id/drawer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">

<android.support.design.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:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="garagemonitor.studiosunmedia.garage.MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">

<include
android:id="@+id/toolbar"
layout="@layout/tool_bar">
</include>

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

<android.support.v4.view.ViewPager
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />

<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|bottom"
android:layout_margin="@dimen/fab_margin"
android:visibility="invisible"
android:src="@android:drawable/ic_dialog_email" />
</android.support.design.widget.CoordinatorLayout>
<android.support.design.widget.NavigationView
android:id="@+id/navigation_view"
android:layout_height="match_parent"
android:layout_width="wrap_content"
android:layout_gravity="start"
app:headerLayout="@layout/nav_header"
app:menu="@menu/menu_navigation"/>
</android.support.v4.widget.DrawerLayout>


Toolbar.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:theme="@style/ThemeOverlay.AppCompat.Dark"
android:elevation="4dp">

</android.support.v7.widget.Toolbar>

Answer

Try adding the logic manually:

toolbar.setNavigationOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        navigationView.openDrawer(Gravity.LEFT);
    }
});

This should work.

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