Introduction:
A Navigation Drawer is a panel that appears when the user swipes from the left edge of the screen. We use fragments to make this. The panel that appears can contain a list, which when clicked loads a new fragment activity.
In this article we will create a simple Navigation Drawer with four fragments. I have added images in these fragments. You can add whatever you want, like TextView, ListView etcetera.
Step 1:
The "strings.xml" used are:
resources>
<string name="app_name">NavigationDrawerNew</string>
<string name="action_settings">Settings</string>
<string name="hello_world">Hello world!</string>
<string name="open">List</string>
<string name="close">Main Page</string>
</resources>
Step 2:
Open "activity_main" and add the following code to it:
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="400dp"
android:layout_height="600dp"
tools:context=".MainActivity"
android:background="#beb6ac"
>
<FrameLayout
android:id="@+id/main"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</FrameLayout>
<ListView
android:id="@+id/drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#454545"
android:choiceMode="singleChoice"/>
</android.support.v4.widget.DrawerLayout>
The layout looks like:
![im1.jpg]()
DrawerLayout acts as a top-level container for window content that allows for interactive "drawer" views to be pulled out from the edge of the window.
Note that you need to provide exact layout_height and layout_width in DrawerLayout (in dp). Giving "match_parent" etcetera will give you a rendering error.
Step 3:
Let us now make a layout file for the first fragment.
Right-click on the layout then select "New" -> "Layout resource file". Name this file as "first_fragment_layout" and add the following to it:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<ImageView
android:id="@+id/textView1"
android:layout_width="800dp"
android:layout_height="800dp"
android:src="@drawable/one"
android:layout_marginTop="20dp"
android:layout_marginLeft="50dp"
android:layout_marginRight="30dp"
/>
</RelativeLayout>
The layout looks like:
![im2.jpg]()
Step 4:
This describes the layout file for the second fragment.
Right-click on the layout then select "New" -> "Layout resource file". Name this file as "second_fragment_layout" and add the following to it:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageView
android:id="@+id/textView1"
android:layout_width="800dp"
android:layout_height="800dp"
android:src="@drawable/two"
android:layout_marginTop="20dp"
android:layout_marginLeft="50dp"
android:layout_marginRight="30dp"
/>
</RelativeLayout>
The layout looks like:
![im3.jpg]()
Step 5:
This describes the layout file for the third fragment.
Right-click on the layout then select "New" -> "Layout resource file". Name this file as "third_fragment_layout" and add the following to it:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageView
android:id="@+id/textView1"
android:layout_width="800dp"
android:layout_height="800dp"
android:src="@drawable/three"
android:layout_marginTop="20dp"
android:layout_marginLeft="50dp"
android:layout_marginRight="30dp"
/>
</RelativeLayout>
The layout looks like:
![im4.jpg]()
Step 6:
This describes the Java class for the first fragment.
Right-click on your package name then select "New" -> "Java class". Name it as "FirstFragment" and add the following code to it:
package com.chhavi.navigationdrawernew;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class FirstFragment extends Fragment {
public static Fragment newInstance(Context context) {
FirstFragment frag = new FirstFragment();
return frag;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
ViewGroup root = (ViewGroup) inflater.inflate(R.layout.first_fragment_layout, null);
return root;
}
}
Step 7:
This describes the Java class for the second fragment.
Right-click on your package name then select "New" -> "Java class". Name it as "SecondFragment" and add the following code to it:
package com.chhavi.navigationdrawernew;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class SecondFragment extends Fragment {
public static Fragment newInstance(Context context) {
SecondFragment frag = new SecondFragment();
return frag;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
ViewGroup root = (ViewGroup) inflater.inflate(R.layout.second_fragment_layout, null);
return root;
}
}
Step 8:
This describes the Java class for the third fragment.
Right-click on your package name then select "New" -> "Java class". Name it as "ThirdFragment" and add the following code to it:
package com.chhavi.navigationdrawernew;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class ThirdFragment extends Fragment {
public static Fragment newInstance(Context context) {
ThirdFragment f = new ThirdFragment();
return f;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
//return super.onCreateView(inflater, container, savedInstanceState);
ViewGroup root = (ViewGroup) inflater.inflate(R.layout.third_fragment_layout, null);
return root;
}
}
Step 9:
For returning to the main page again.
Right-click on your package name then select "New" -> "Java class". Name it as "MainPageFragment" and add the following code to it:
package com.chhavi.navigationdrawernew;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class MainPageFragment extends Fragment {
public static Fragment newInstance(Context context) {
MainPageFragment frag = new MainPageFragment();
return frag;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
//return super.onCreateView(inflater, container, savedInstanceState);
ViewGroup root = (ViewGroup) inflater.inflate(R.layout.activity_main, null);
return root;
}
}
Step 10:
Open "MainActivity.java" and add the following code to it:
package com.chhavi.navigationdrawernew;
import android.app.ActionBar;
import android.os.Bundle;
import android.app.Activity;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTransaction;
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.ArrayAdapter;
import android.widget.ListView;
public class MainActivity extends FragmentActivity {
ActionBarDrawerToggle icon;
final String[] listContent ={"Fragment One","Fragment Two","Fragment Three","Main Page"};
final String[] fragments ={
"com.chhavi.navigationdrawernew.FirstFragment",
"com.chhavi.navigationdrawernew.SecondFragment",
"com.chhavi.navigationdrawernew.ThirdFragment",
"com.chhavi.navigationdrawernew.MainPageFragment"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ArrayAdapter<String> ad = new ArrayAdapter<String>(getActionBar().getThemedContext(), android.R.layout.simple_list_item_1, listContent);
final DrawerLayout drawer = (DrawerLayout)findViewById(R.id.drawer_layout);
final ListView list = (ListView) findViewById(R.id.drawer);
list.setAdapter(ad);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, final int position, long id) {
drawer.setDrawerListener( new DrawerLayout.SimpleDrawerListener(){
@Override
public void onDrawerClosed(View drawerView){
super.onDrawerClosed(drawerView);
FragmentTransaction transition = getSupportFragmentManager().beginTransaction();
transition.replace(R.id.main, Fragment.instantiate(MainActivity.this, fragments[position]));
transition.commit();
}
});
drawer.closeDrawer(list);
}
});
}
@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;
}
}
Output snapshots
First screen:
![im5.jpg]()
On swiping:
![im6.jpg]()
Selecting fragment one:
![im7.jpg]()
Selecting fragment two:
![im8.jpg]()
Selecting fragment three:
![im9.jpg]()
Thank you..... Enjoy coding :)