How to add a navigation drawer?

问题

In the following activity, i have a fragment and an image on it. The Fragment is just a darker Action Bar that has a picture on it. I'm trying to have a left slide menu as a fragment so i could have it on every activity.

MainActivity;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.TextView;


public class MainActivity extends AppCompatActivity {

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

Main Activity XML;

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    tools:context="com.example.bassammetwally.egyptianstreets.MainActivity"
    android:background="#b12828">

    <fragment
        android:layout_width="match_parent"
        android:layout_height="75dp"
        android:name="com.example.bassammetwally.egyptianstreets.Title_bar"
        android:id="@+id/fragment"
        tools:layout="@layout/title_barmenu"
        android:layout_alignParentTop="true"
        android:layout_alignParentStart="true" />
    <ImageView
        android:layout_width="100dp"
        android:layout_height="50dp"
        android:background="@drawable/logo"
        android:layout_alignTop="@+id/fragment"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="8dp"/>

</RelativeLayout>

Title Bar Fragment that should be on every Activity;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.ViewGroup;
import android.view.View;

public class Title_bar extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        return inflater.inflate(R.layout.title_barmenu, container, false);
    }
}

Title Bar Fragment XML;

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#8b0404">

</LinearLayout>

How would i implement navigation Drawer in my title bar?

回答1:

Try something like this, for the layout file, you just need

<?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_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">


<!-- Main content when drawer is closed -->
    <include
        layout="@layout/app_bar_nav"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
<!-- The drawer, you can change the menu contents dynamically -->
    <android.support.design.widget.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header"
        app:menu="@menu/menu_nav" />

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

And the implementation could be as simple as this;

package com.example;


public class NavigationDrawer extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_navigation_drawer);
        //You should remove this if you have no intent of using it
        //And if you uset it, to prevent double actionbars, use a style with no actionbar
        //Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);//I like setting custom actionbar
        //setSupportActionBar(toolbar);


        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, "Open drawer", "Close drawer");
        drawer.setDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);
    }

    @Override
    public void onBackPressed() {
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.note_home, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        return true;//or super.onOptionsItemSelected, false won't show menu
    }


    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.
        int id = item.getItemId();
        switch (id) {
            case R.id.nav_camera:
                break;
            case R.id.nav_gallery:
                break;

            case R.id.nav_schedule:
                break;
            case R.id.nav_manage:
                //do someting silly
                break;
        }
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }
}