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Where do I put the nav_host portion of the xml code?

I am trying to figure out where I should be putting the nav_host in my xml files. I am not fully understanding how to get around my application fragments in general.
I have read this Add Drawer layout into main activity
I had most of this working before trying to add the Navigation host (Meaning I could use the drawer menu and navigate). I have not been able to navigate from a fragment to anywhere else with a button that is on that fragment.
My current activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.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_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".MainActivity"
tools:openDrawer="start">
<androidx.coordinatorlayout.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.ActionBar">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/colorPrimary"
android:elevation="4dp"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"/>
</com.google.android.material.appbar.AppBarLayout>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
<androidx.fragment.app.FragmentContainerView
android:id="#+id/mainActivityHost"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:defaultNavHost="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:navGraph="#navigation/mobile_navigation"
tools:layout="#layout/fragment_home" />
<com.google.android.material.navigation.NavigationView
android:id="#+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="#layout/nav_header_main"
app:menu="#menu/drawer_menu"/>
</androidx.drawerlayout.widget.DrawerLayout>
Is where I have the nav_host correct? Or should I have a different Fragment all together for the nav_host?
My MainActivity.class
package com.signin.app;
import android.os.Bundle;
import android.view.MenuItem;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.core.view.GravityCompat;
import androidx.drawerlayout.widget.DrawerLayout;
import com.google.android.material.navigation.NavigationView;
public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
private Toolbar toolbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
// The program should always start on home.
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction().replace(R.id.mainActivityHost, new HomeFragment()).commit();
navigationView.setCheckedItem(R.id.nav_home);
}
}
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_home) {
} else if (id == R.id.nav_signin) {
} else if (id == R.id.nav_flights) {
} else if (id == R.id.nav_hotels) {
} else if (id == R.id.nav_profile) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
//
// #Override
// public void onBackPressed() {
// if (drawer.isDrawerOpen(GravityCompat.START)) {
// drawer.closeDrawer(GravityCompat.START);
// } else {
// super.onBackPressed();
// }
// }
}
Before I messed with it I could open the drawer click the menu items and go to a fragment, so pretending that still worked the problem was that I could go to Signin fragment, but the buttons on that fragment would not take me anywhere, they mostly just crashed the application.
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.navigation.Navigation;
public class SigninFragment extends Fragment {
private EditText editText;
private Button btn_signup, btn_signin, btn_forgot_pass;
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.activity_main, container,false);
editText = view.findViewById(R.id.email);
btn_signup = view.findViewById(R.id.btn_signup);
btn_signin = view.findViewById(R.id.btn_signin);
btn_forgot_pass = view.findViewById(R.id.btn_forgot_pass);
btn_signup.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Toast.makeText(getContext(), "Sign Up", Toast.LENGTH_SHORT).show();
Navigation.findNavController(view).navigate(R.id.nav_signup);
}
});
btn_signin.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getContext(), "Sign in", Toast.LENGTH_SHORT).show();
}
});
return view;
}
}```
Also, please note that nav_signup is not in the drawer menu so I wasn't sure where I was supposed to identify it, (i.e., in the fragment_signup.xml, in its own menu, somewhere else.) right now the id for fragment_signup, is `android:id="#+id/nav_signup"`

I'm not sure I understand the question
Navigation.findNavController(view).navigate(R.id.nav_signup); - it should do the navigation and R.id.nav_signup should be destination or action. I'm not sure what R.id.nav_signup is atm. If destination then probably it should be fragment id.
Here's doc about navigations https://developer.android.com/guide/navigation/navigation-navigate#java
And here is Google course about navigation between fragments https://developer.android.com/codelabs/basic-android-kotlin-training-fragments-navigation-component#6 (This guide is in Kotlin but that's just a syntax difference, hopefully still can be useful)
And the final code of this is here https://github.com/google-developer-training/android-basics-kotlin-words-app (it uses navigation/nav_graph.xml to define navigations between fragments)
And for example in src/main/java/com/example/wordsapp/LetterAdapter.kt has navigation to different fragment.
holder.button.setOnClickListener {
// LetterListFragmentDirections is defined in nav_graph.xml
val action = LetterListFragmentDirections.actionLetterListFragmentToWordListFragment(letter = holder.button.text.toString())
// Navigate using that action
holder.view.findNavController().navigate(action)
}
I haven't used fragments a long time, but I hope this will be helpful :)

Replace fragments in default Android Studio navigation drawer

I am trying to replace home fragment with gallery fragment and vice versa in the default navigation drawer from Android Studio. This is the main class:
package com.example.navdrawer;
import android.os.Bundle;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
import com.google.android.material.snackbar.Snackbar;
import android.view.View;
import androidx.navigation.NavController;
import androidx.navigation.Navigation;
import androidx.navigation.ui.AppBarConfiguration;
import androidx.navigation.ui.NavigationUI;
import com.google.android.material.navigation.NavigationView;
import androidx.drawerlayout.widget.DrawerLayout;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import android.view.Menu;
public class MainActivity extends AppCompatActivity {
private AppBarConfiguration mAppBarConfiguration;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
DrawerLayout drawer = findViewById(R.id.drawer_layout);
NavigationView navigationView = findViewById(R.id.nav_view);
// Passing each menu ID as a set of Ids because each
// menu should be considered as top level destinations.
mAppBarConfiguration = new AppBarConfiguration.Builder(
R.id.nav_home, R.id.nav_gallery, R.id.nav_slideshow,
R.id.nav_tools, R.id.nav_share, R.id.nav_send)
.setDrawerLayout(drawer)
.build();
NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration);
NavigationUI.setupWithNavController(navigationView, navController);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onSupportNavigateUp() {
NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
return NavigationUI.navigateUp(navController, mAppBarConfiguration)
|| super.onSupportNavigateUp();
}
}
This is the home fragment class:
import android.widget.Button;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import com.example.navdrawer.R;
import com.example.navdrawer.ui.gallery.GalleryFragment;
public class HomeFragment extends Fragment {
Button button;
TextView textView = null;
public View onCreateView(#NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.fragment_home, container, false);
textView = root.findViewById(R.id.text_home);
textView.setText("This is home fragment");
button = root.findViewById(R.id.home_button);
return root;
}
public void onClick(View v) {
//respond to clicks
if (v.getId() == R.id.home_button) {
GalleryFragment frag = new GalleryFragment();
FragmentManager ft = getFragmentManager();
FragmentTransaction fragmentTransaction =ft.beginTransaction();
fragmentTransaction.replace(R.id.home, frag);
// ft.addToBackStack(null);
fragmentTransaction.commit();
}
}
}
The gallery fragment is simillar with the home fragment:
package com.example.navdrawer.ui.gallery;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import androidx.annotation.Nullable;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProviders;
import com.example.navdrawer.R;
import com.example.navdrawer.ui.home.HomeFragment;
public class GalleryFragment extends Fragment {
Button button;
TextView textView = null;
public View onCreateView(#NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.fragment_gallery, container, false);
textView = root.findViewById(R.id.text_gallery);
textView.setText("This is gallery fragment");
button = root.findViewById(R.id.gallery_button);
return root;
}
public void onClick(View v) {
//respond to clicks
if (v.getId() == R.id.gallery_button) {
HomeFragment frag = new HomeFragment();
FragmentManager ft = getFragmentManager();
FragmentTransaction fragmentTransaction =ft.beginTransaction();
fragmentTransaction.replace(R.id.gallery, frag);
// ft.addToBackStack(null);
fragmentTransaction.commit();
}
}
}
And I've got this xml for the home fragment, which is simillar with the xml from the gallery fragment:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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/scrollView2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<RelativeLayout
android:id="#+id/home"
android:screenOrientation="portrait"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/text_home"
android:layout_marginTop="50dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<Button
android:id="#+id/home_button"
android:layout_centerHorizontal="true"
android:layout_below="#+id/text_home"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/replace1" />
</RelativeLayout>
</ScrollView>
I don't know why it's not working.

I've found the answer from this post: link
For navigation between fragments, all I had to do was to implement this method in the "onCreateView" function:
button.setOnClickListener(Navigation.createNavigateOnClickListener(R.id.nav_gallery, null));
Another method is:
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Navigation.findNavController(view).navigate(R.id.nav_gallery);
}
});
I still don't know how to navigate between fragments using a conditional "if, else" statement, inside a function, maybe this will imply another type of "action listening"...

The default template uses the Navigation component which means you don't manually do FragmentTransactions. Instead, as per the documentation, you'd add your GalleryFragment to your navigation XML file (under res/navigation) then call navigate() to go to that destination, replacing the screen you're currently on.

cannot resolve symbol 'toolbar' r.id.toolbar [closed]

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Closed 7 years ago.
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i'm trying to create a sliding drawer. I spent forever getting my imports to match my code, in terms of getSupportActionBar vs getActionBar etc., I suspect the issue is somewhere in the activity_main.xml but I'm at a loss for what to put there.
MainActivity.java
package me.paxana.alerta;
import android.app.Activity;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.app.FragmentManager;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarDrawerToggle;
import android.app.Fragment;
import android.content.Intent;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MenuInflater;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.widget.Toolbar;
import com.parse.ParseUser;
import java.util.ArrayList;
import java.util.List;
import butterknife.Bind;
import butterknife.ButterKnife;
import me.paxana.alerta.adapter.SlidingMenuAdapter;
import me.paxana.alerta.fragment.Fragment1;
import me.paxana.alerta.fragment.Fragment2;
import me.paxana.alerta.fragment.Fragment3;
import me.paxana.alerta.model.ItemSlideMenu;
public class MainActivity extends AppCompatActivity {
public static final String TAG = MainActivity.class.getSimpleName();
private List<ItemSlideMenu> listSliding;
private SlidingMenuAdapter adapter;
private ListView listViewSliding;
private DrawerLayout drawerLayout;
private android.support.v7.app.ActionBarDrawerToggle actionBarDrawerToggle;
private Toolbar mToolbar;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.bind(this);
ParseUser currentUser = ParseUser.getCurrentUser();
if (currentUser == null) {
navigateToLogin();
}
else {
Log.i(TAG, currentUser.getUsername());
}
listViewSliding = (ListView)findViewById(R.id.lv_sliding_menu);
drawerLayout = (DrawerLayout)findViewById(R.id.drawer_layout);
listSliding = new ArrayList<>();
//add item for sliding list
listSliding. add(new ItemSlideMenu(R.drawable.ic_action_settings, "Settings"));
listSliding.add(new ItemSlideMenu(R.drawable.ic_action_about, "About"));
listSliding.add(new ItemSlideMenu(R.mipmap.ic_launcher, "Android"));
adapter = new SlidingMenuAdapter(this, listSliding);
listViewSliding.setAdapter(adapter);
//display icon to open/close slider
mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
assert getActionBar() != null;
getActionBar().setDisplayHomeAsUpEnabled(true);
//set title
setTitle(listSliding.get(0).getTitle());
//item selected
listViewSliding.setItemChecked(0, true);
//close menu
drawerLayout.closeDrawer(listViewSliding);
//handle on item click
listViewSliding.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//set title
setTitle(listSliding.get(position).getTitle());
//item selected
listViewSliding.setItemChecked(position, true);
//close menu
drawerLayout.closeDrawer(listViewSliding);
}
});
actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.drawer_opened, R.string.drawer_closed) {
#Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
invalidateOptionsMenu();
}
#Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
invalidateOptionsMenu();
}
};
drawerLayout.setDrawerListener(actionBarDrawerToggle);
}
private void navigateToLogin() {
Intent intent = new Intent(this, LoginActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if(actionBarDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
int itemId = item.getItemId();
if (itemId == R.id.action_logout) {
ParseUser.logOut();
navigateToLogin();
}
return super.onOptionsItemSelected(item);
}
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
actionBarDrawerToggle.syncState();
}
//create method replace fragment
private void replaceFragment(int pos) {
android.support.v4.app.Fragment fragment = null;
switch (pos) {
case 0:
fragment = new Fragment1();
break;
case 1:
fragment = new Fragment2();
break;
case 2:
fragment = new Fragment3();
break;
default:
fragment = new Fragment1();
break;
}
if(null != fragment) {
android.support.v4.app.FragmentManager fragmentManager = getSupportFragmentManager();
android.support.v4.app.FragmentTransaction transaction = fragmentManager.beginTransaction();
transaction.replace(R.id.main_content, fragment);
transaction.addToBackStack(null);
transaction.commit();
}
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar 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"
android:id="#+id/drawer_layout"
tools:context="me.paxana.alerta.MainActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/main_content">
</RelativeLayout>
<ListView
android:layout_width="200dp"
android:layout_height="match_parent"
android:id="#+id/lv_sliding_menu"
android:background="#FFFFFF"
android:choiceMode="singleChoice"
android:layout_gravity="start" />
</android.support.v7.widget.Toolbar>

Why are you using android.support.v7.widget.Toolbar for your main_layout root tag? That's not what android says.
You should use that Toolbar just for using Toolbar with your activity.
See: setContentView(R.layout.activity_main);
That won't work at all.
Use it like this:
<?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:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="me.paxana.alerta.MainActivity">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/ColorPrimary"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar" />
<ListView
android:id="#+id/lv_sliding_menu"
android:layout_width="200dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#FFFFFF"
android:choiceMode="singleChoice" />
</RelativeLayout>
I'd rather to use CoordinatorLayout with AppCompat or this Toolbar implementation too.
Also,
//display icon to open/close slider
mToolbar = (Toolbar) findViewById(R.id.toolbar);
Here you were using toolbar as that Toolbar id.
Use it like this in your xml:
android:id="#+id/toolbar"
Above code should work now.Also, you've many not used in your imports like:
import android.support.v7.app.ActionBarActivity;
and etc.
Read the docs please.

Use this
R.id.drawer_layout
Instead of
R.id.toolbar

What is best example for Navigation Drawer in Material Design in low API

I trying find more info how create best Navigation Drawer panel with Material Desing's guidelines.
Google recommended page Creating a Navigation Drawer. This example based on Support Library v4.
Also link about v7 AppCompat v21 — Material Design for Pre-Lollipop Devices!. This work fine only on Android API 21+. I can't use this Material Desing in lower OS's vesion, because If I set target=android-20 (or less) in project.properties I get errors in Eclipse (several hundred):
C:\<workspace>\android-support-v7-appcompat\res\values-v21\styles_base.xml:75: error: Error retrieving parent for item: No resource found that matches the given name 'android:Widget.Material.ActionButton'
....
:( several hundred error in 'values-v21' directory
....
I use features of low Android API, that was deprecated or undefined in Android API 21+. But I need support Material Design in low API (14+).
Please give examples of creating Navigation Drawer on low Android API 14+.

Use this as a dependency :
compile "com.android.support:appcompat-v7:21.0.2" (or use newer)
Layout :
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<include layout="#layout/toolbar"
android:id="#+id/mytoolbardrawer"
/>
<FrameLayout
android:id="#+id/frame_container"
android:layout_width="match_parent"
android:layout_below="#id/mytoolbardrawer"
android:layout_height="match_parent"
/>
</RelativeLayout>
<RelativeLayout
android:id="#+id/rel_drawer"
android:layout_width="304dp"
android:layout_height="match_parent"
android:layout_gravity="start"
>
<ImageView
android:layout_width="match_parent"
android:layout_height="171dp"
android:id="#+id/img_drawer"
android:scaleType="centerCrop"
android:src="#drawable/photo_4"/>
<ListView
android:id="#+id/list_slidermenu"
android:layout_below="#id/img_drawer"
android:layout_width="304dp"
android:listSelector="#drawable/list_selector"
android:checkable="true"
android:layout_height="match_parent"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:paddingStart="16dp"
android:paddingEnd="16dp"
android:dividerHeight="1dp"
android:theme="#style/ThemeOverlay.AppCompat.Light"
android:background="#android:color/white" />
</RelativeLayout>
</android.support.v4.widget.DrawerLayout>
Drawer Activity :
import android.content.res.Configuration;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.widget.Toolbar;
import android.text.Html;
import android.text.SpannableString;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.RelativeLayout;
public class DrawerActivity extends ActionBarActivity {
Toolbar t;
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private RelativeLayout mRelativeLayout;
private ActionBarDrawerToggle mDrawerToggle;
private CharSequence mDrawerTitle,mTitle;
private String[] navMenuItems;
private SpannableString[] navmenuItems;
private ArrayAdapter<SpannableString> adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_drawer);
t=(Toolbar)findViewById(R.id.mytoolbardrawer);
setSupportActionBar(t);
initStuffs();
if (savedInstanceState == null) {
new SliderMenuClickListener().displayView(0);
}
}
private void initStuffs() {
mTitle=mDrawerTitle=getTitle();
navMenuItems=getResources().getStringArray(R.array.Titles);
mDrawerLayout=(DrawerLayout)findViewById(R.id.drawer_layout);
mDrawerList=(ListView)findViewById(R.id.list_slidermenu);
mRelativeLayout=(RelativeLayout)findViewById(R.id.rel_drawer);
navmenuItems=new SpannableString[navMenuItems.length];
for(int i=0;i<navMenuItems.length;i++) {
navmenuItems[i] = new SpannableString(Html.fromHtml("<font color='#000000'>" + navMenuItems[i] + "</font>"));
}
adapter=new ArrayAdapter<SpannableString>(DrawerActivity.this,android.R.layout.simple_list_item_1,navmenuItems);
mDrawerList.setAdapter(adapter);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
mDrawerToggle=new ActionBarDrawerToggle(DrawerActivity.this,mDrawerLayout,t,R.string.app_name,R.string.app_name){
public void onDrawerClosed(View view){
getSupportActionBar().setTitle(mTitle);
invalidateOptionsMenu();
}
public void onDrawerOpened(View view){
getSupportActionBar().setTitle(mDrawerTitle);
invalidateOptionsMenu();
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
mDrawerList.setOnItemClickListener(new SliderMenuClickListener());
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.drawer, menu);
return true;
}
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
boolean drawerOpen=mDrawerLayout.isDrawerOpen(mRelativeLayout);
menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
mDrawerToggle.onConfigurationChanged(newConfig);
}
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
mDrawerToggle.syncState();
}
#Override
public void setTitle(CharSequence title) {
super.setTitle(title);
mTitle=title;
getSupportActionBar().setTitle(mTitle);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
private class SliderMenuClickListener implements ListView.OnItemClickListener {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id){
displayView(position);
}
private void displayView(int position) {
Fragment fragment=null;
switch (position){
case 0:
fragment=new HomeFragment();
break;
case 1:
fragment=new HomeFragment();
break;
case 2:
fragment=new HomeFragment();
break;
case 3:
fragment=new HomeFragment();
break;
default:break;
}
if(fragment!=null){
FragmentManager fm=getSupportFragmentManager();
fm.beginTransaction().replace(R.id.frame_container,fragment).commit();
mDrawerList.setItemChecked(position,true);
mDrawerList.setSelection(position);
setTitle(navMenuItems[position]);
mDrawerLayout.closeDrawer(mRelativeLayout);
}else{
Log.e("DrawerActivity","Error creating fragment");
}
}
}
}

Why does this Navigation Drawer not open?

I'm trying to make a Navigation Drawer, I'm reading a lot of guides on how to do this and I think it should work now, but the Drawer does not open when I click on the title (when I manually try to open it, then the icon will get smaller, but still no menu appears). Also, I'm not getting any errors or exception, so I think I might be missing something which I cannot figure out myself.
This is the code of my BaseActivity (the drawer activity which gets extended by my MainActivity):
import android.os.Bundle;
import android.app.Activity;
import android.content.res.Configuration;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class BaseActivity extends Activity {
public DrawerLayout drawerLayout;
public ListView drawerList;
private String[] drawerListEntries;
private ActionBarDrawerToggle drawerToggle;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_base);
drawerListEntries = getResources().getStringArray(R.array.drawer_items);
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.drawable.ic_navigation_drawer, R.string.drawer_open, R.string.drawer_close)
{
public void onDrawerClosed(View view)
{
getActionBar().setTitle(R.string.app_name);
}
public void onDrawerOpened(View drawerView)
{
getActionBar().setTitle(R.string.hello_world);
}
};
drawerLayout.setDrawerListener(drawerToggle);
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
drawerList = (ListView) findViewById(R.id.drawer_list);
drawerList.setAdapter(new ArrayAdapter<String>(getBaseContext(), R.layout.drawer_list_item, drawerListEntries));
drawerList.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View view, int pos, long arg3) {
String selectedValue = (String) drawerList.getAdapter().getItem(pos);
Toast.makeText(getBaseContext(), selectedValue, Toast.LENGTH_SHORT).show();
}
});
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if (drawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
drawerToggle.syncState();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
drawerToggle.onConfigurationChanged(newConfig);
}
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
boolean drawerOpen = drawerLayout.isDrawerOpen(drawerList);
menu.findItem(R.id.action_user).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
}
This is my activity_base.xml:
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="#+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ListView
android:id="#+id/drawer_list"
android:layout_width="240dp"
android:layout_height="wrap_content"
android:background="#color/light_blue"
android:divider="#android:color/transparent"
android:dividerHeight="0dp"
android:choiceMode="singleChoice"
android:layout_gravity="start"
/>
</android.support.v4.widget.DrawerLayout>
This is my drawer_list_item.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/drawer_list_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_marginTop="12dp"
android:textSize="24sp"
android:textColor="#color/belize_hole"
android:fontFamily="sans-serif-light">
</TextView>
</LinearLayout>
And this is my MainActivity.java which extends BaseActivity:
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class HomeActivity extends BaseActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.home, menu);
//return super.onCreateOptionsMenu(menu);
return true;
}
}
Anyone who can see the problem?

You are overriding content view from BaseActivity by calling setContentView(R.layout.activity_home); in HomeActivity.
I suggest you to switch fragments instead of activities with Navigation Drawer, it's the best way. So you will have one hosting activity with Navigation Drawer and you'll switch only views inside FrameLayout, for instance. Take a look here http://developer.android.com/training/implementing-navigation/nav-drawer.html