Android drawerlayout Drawer Effect

Official website guide:http://developer.android.com/training/implementing-navigation/nav-drawer.html

Official Website Example: Navigationdrawer.zip

Android.support.v4.widget.DrawerLayout drawer layout. The widget can only implement left-to-right, right-to-left

Opendrawer (), Closedrawer (), Isdraweropen ()

The main layout files and activity implementations of the example are posted below

Activity_main.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" > <FrameLayou T android:id= "@+id/content_frame" android:layout_width= "match_parent" android:layout_height= "Match_pa Rent "/> <listview android:id=" @+id/left_drawer "android:layout_width=" 240DP "android:layout _height= "Match_parent" android:layout_gravity= "right" android:choicemode= "Singlechoice" Android:divid Er= "@android: Color/transparent" android:dividerheight= "0DP" android:background= "#111"/> <!--an    Droid:choicemode checked state with ItemClick no conflict none value is 0, indicates no selection mode, Singlechoice value is 1, indicates that one item can be selected; multiplechoice A value of 2 indicates that multiple items can be selected. Android:layout_gravityleft right<span style= "White-space:pre" ></span>left or start right or End<span Style= "White-space:pRe "></span>start end indicates whether the effect in the drawer appears from left to right or right to left--></android.support.v4.widget.drawerlayout> 

Package com.stone.drawerlayout;/* * Copyright the Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * You are not a use this file except in compliance with the License. * Obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * unless required by applic Able law or agreed to in writing, software * Distributed under the License are distributed on a "as is" BASIS, * without W Arranties or CONDITIONS of any KIND, either express OR implied. * See the License for the specific language governing permissions and * limitations under the License. */import Java.util.locale;import Android.app.activity;import Android.app.fragment;import Android.app.fragmentmanager;import Android.app.searchmanager;import Android.content.intent;import Android.content.res.configuration;import Android.os.bundle;import Android.support.v4.app.ActionBarDrawerToggle; Import Android.support.v4.view.gravitycompat;import Android.support.v4.wiDget. Drawerlayout;import Android.view.layoutinflater;import Android.view.menu;import Android.view.MenuInflater;import Android.view.menuitem;import Android.view.view;import Android.view.viewgroup;import Android.widget.AdapterView; Import Android.widget.arrayadapter;import Android.widget.imageview;import Android.widget.listview;import android.widget.toast;/** * This example illustrates a common usage of the drawerlayout widgets * in the Android support Lib Rary. * <p/> * <p>when a navigation (left) drawer is present, the host activity should detect presses of * the Actio N Bar s up affordance as a signal to open and close the navigation drawer. The * Actionbardrawertoggle facilitates this behavior. * Items within the drawer should fall into one of both categories:</p> * <p/> * <ul> * <li><stro Ng>view Switches</strong>.  A View switch follows the same basic policies as * List or tab navigation in that a view switch does not create navigation HistoRy. * This pattern should is used at the root activity of a task, leaving some form * of-Navigation active for ACT Ivities further down the navigation hierarchy.</li> * <li><strong>selective up</strong>. The drawer allows the user to choose a alternate * parent for up navigation. This allows a user-to-jump across an app's navigation * hierarchy at'll. The application should treat this as it treats up navigation from * a different task, replacing the current task stack usi ng Taskstackbuilder or similar. * This is the only form of navigation drawer that should be used outside of the root * activity of a task.</li> * &L t;/ul> * <p/> * <p>right side drawers should is used for the actions, not navigation. This follows the pattern * established by the Action Bar that navigation should is to the left and the actions to the right. * An action should is an operation performed on the current contents of the window, * For example enabling or DisablinG A data overlay on top of the Content.</p> */public class Mainactivity extends Activity {private Drawer    Layout mdrawerlayout;    Private ListView mdrawerlist;    Private Actionbardrawertoggle Mdrawertoggle;    Private Charsequence Mdrawertitle;    Private Charsequence Mtitle;    Private string[] mplanettitles;        @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);        Setcontentview (R.layout.activity_main);        Mtitle = Mdrawertitle = GetTitle ();        Mplanettitles = Getresources (). Getstringarray (R.array.planets_array);        Mdrawerlayout = (drawerlayout) Findviewbyid (r.id.drawer_layout); Mdrawerlist = (ListView) Findviewbyid (r.id.left_drawer);//Drawer view//Set a custom shadow that overlays the main co         Ntent when the drawer opens Mdrawerlayout.setdrawershadow (R.drawable.drawer_shadow, Gravitycompat.start);//Set Shadow Set up the drawer ' s list view with items and click ListenEr mdrawerlist.setadapter (New arrayadapter<string> (this, R.layout.drawer_list_item, mplanettit        Les));        Mdrawerlist.setonitemclicklistener (New Draweritemclicklistener ()); The Enable ActionBar app icon to behave as action to toggle NAV drawer requires an API level of Getactionbar (). Setdisplayhom Easupenabled (TRUE);//Add a return icon to the left of Home icon Getactionbar (). Sethomebuttonenabled (True); Requires API level 14 to use Home-icon to click//Actionbardrawertoggle ties together the the proper interactions//BETW Een the sliding drawer and the Action Bar app icon Mdrawertoggle = new Actionbardrawertoggle (the drawer on//V4 control Actionbar opens Off this,/* host Activity */mdrawerlayout,/* Drawerlayout Object * /r.drawable.ic_drawer,/* NAV drawer image to replace ' up ' caret *///icon return icon R.STRING.D Rawer_open,/* "Open drawer" description for accessibility */r.string. Drawer_close/* "Close drawer" description for accessibility */) {public void ondrawerclosed (View view)                {//drawer closed after Getactionbar (). Settitle (Mdrawertitle); Invalidateoptionsmenu ();                Creates call to Onprepareoptionsmenu ()} public void ondraweropened (View drawerview) {//Drawer Open                Getactionbar (). Settitle (Mtitle); Invalidateoptionsmenu (); Creates call to Onprepareoptionsmenu ()} @Override the public boolean onoption Sitemselected (MenuItem Item) {if (item! = NULL && item.getitemid () = = Android. R.id.home) {//actionbar on the home icon//end that is gravity.right right-to-left display start that left-to-right pop-up displays if (mDr Awerlayout.isdrawervisible (Gravitycompat.end)) {mdrawerlayout.closedrawer (gravitycompat.end);//Close pumping Drawers} else {mdrawerlayout.opendrawer (gravitycompat.END);//Open Drawer} return true;            } return false;        }        }; Mdrawerlayout.setdrawerlistener (Mdrawertoggle);//Set Drawer listener if (savedinstancestate = = null) {//SelectItem (0        ); }} @Override public boolean Oncreateoptionsmenu (Menu menu) {//Load menu sdk3.0 After menu is included in Actionbar Menuinfla        ter Inflater = Getmenuinflater ();        Inflater.inflate (R.menu.main, menu);    return Super.oncreateoptionsmenu (menu); }/* Called whenever we call Invalidateoptionsmenu () */@Override public boolean Onprepareoptionsmenu (Menu menu) {//If the nav drawer is open, hide action items related to the content view Boolean draweropen = Mdrawerla        Yout.isdraweropen (mdrawerlist); Menu.finditem (R.id.action_websearch). setvisible (!draweropen),//search display contrary to drawer return    Super.onprepareoptionsmenu (menu); } @Override public boolean onoptionsitemselected (menUitem item) {//The Action Bar Home/up action should open or close the drawer.        Actionbardrawertoggle would take care of this.        if (mdrawertoggle.onoptionsitemselected (item)) {return true; }//Handle action buttons switch (Item.getitemid ()) {case R.id.action_websearch://creat            E Intent to perform web search for this planet intent intent = new Intent (Intent.action_web_search);            Intent.putextra (Searchmanager.query, Getactionbar (). GetTitle ()); Catch event that there's no activity to handle intent if (Intent.resolveactivity (Getpackagemanager ())! = nul            L) {startactivity (intent);            } else {Toast.maketext (this, r.string.app_not_available, Toast.length_long). Show ();        } return true;        Default:return super.onoptionsitemselected (item); }}/* The Click Listner for the NavigatIon Drawer */Private class Draweritemclicklistener implements Listview.onitemclicklistener {@Override P        ublic void Onitemclick (adapterview<?> parent, view view, int position, long id) {SelectItem (position); }}//content area display planetfragment private void selectitem (int position) {//update the main content by re        Placing fragments Fragment Fragment = new Planetfragment ();        Bundle args = new bundle ();        Args.putint (planetfragment.arg_planet_number, position);        Fragment.setarguments (args);        Fragmentmanager Fragmentmanager = Getfragmentmanager ();        Fragmentmanager.begintransaction (). replace (R.id.content_frame, fragment). commit (); Update selected item and title, then close the drawer//mdrawerlist.setitemchecked (position, true);//Set        Title (Mplanettitles[position]);    Mdrawerlayout.closedrawer (mdrawerlist); } @Override public void Settitle (charsequence title) {MdraWertitle = title;    Getactionbar (). Settitle (Mdrawertitle); }/** * When using the Actionbardrawertoggle, you must call it during * Onpostcreate () and Onconfigurationchang Ed () ... */@Override protected void Onpostcreate (Bundle savedinstancestate) {super.onpostcreate (savedins        Tancestate);        Sync the toggle state after onrestoreinstancestate have occurred.    Mdrawertoggle.syncstate (); } @Override public void onconfigurationchanged (Configuration newconfig) {super.onconfigurationchanged (Newcon        FIG);    Pass any configuration change to the drawer Toggls mdrawertoggle.onconfigurationchanged (newconfig); }/** * Fragment that appears in the "Content_frame", shows a planet */public static class Planetfragment E        Xtends Fragment {public static final String Arg_planet_number = "Planet_number";        Public planetfragment () {//Empty constructor required for fragment subclasses} @Override Public View oncreateview (layoutinflater inflater, ViewGroup container, Bundle sav            Edinstancestate) {View Rootview = inflater.inflate (R.layout.fragment_planet, container, false);            int i = getarguments (). GetInt (Arg_planet_number);            String Planet = Getresources (). Getstringarray (R.array.planets_array) [i];                            Find out the ID of the res-drawable resource int imageId = Getresources (). Getidentifier (Planet.tolowercase (Locale.getdefault ()),            "Drawable", Getactivity (). Getpackagename ());            ((ImageView) Rootview.findviewbyid (R.id.image)). Setimageresource (ImageId);            Getactivity (). Settitle (planet);        return rootview; }    }}