How did Google manage to do this? Slide ActionBar

Question

I really want to implement this (the side navigation) in an app of my own, does anyone know how Google managed to do this?

They seem to have pulled the current window aside and put in a fly-in navigation of their own.

Answer 1

Did a roundup of the original implementation and added XML parsing as well as autodetection of a possibly present actionbar, so it works with the native as well as a support action bar such as ActionBarSherlock.

The whole thing is now a library project together with an example app and is described over at Sliding Menu for android Thanks to scirocco for the initial idea and code!

Answer 2

For those of you who uses the SlidingMenu library (https://github.com/jfeinstein10/SlidingMenu) there is a way to jack it in and it seems to work! With help of @Scirocco put this in your onCreate for the activity:

ViewGroup decorView = (ViewGroup) getWindow().getDecorView();
mSlidingMenu = new SlidingMenu(this);
ViewGroup mainContent = (ViewGroup) decorView.getChildAt(0);
decorView.removeView(mainContent);
mSlidingMenu.setContent(mainContent);
decorView.addView(mSlidingMenu);
mMenu = (LinearLayout) View.inflate(this, R.layout.menuview, null);
mSlidingMenu.setMenu(mMenu);
mSlidingMenu.setTouchModeAbove(SlidingMenu.TOUCHMODE_MARGIN);
mSlidingMenu.setBehindOffsetRes(R.dimen.slidingmenu_offset);

basically what it does is replacing the linearlayout in decor view with the slidingmenu instead.

Notice: Ive only tested it lightly but it seems to work.

Answer 3

In fact, there's a way to do this. Even without implementing your own ActionBar.

Just have a look at the hierachyviewer! (Located in the tools directory)

There's the DecorView, and a LinearLayout as a child. This LinearLayout contains both the ActionBar and the other content. So, you can simply apply some FrameLayout.LayoutParams to this LinearLayout and get some space on the left side this way. Then, you can fill this space with your menu-ListView and overlay the other content with a FrameLayout, that, when it's clicked, collapses the menu. So, here's some code:

First, the class for collapsing / expanding (SlideMenu.java):

package your.cool.app;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Rect;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.Window;
import android.view.animation.TranslateAnimation;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;

public class SlideMenu {
//just a simple adapter
public static class SlideMenuAdapter extends ArrayAdapter<SlideMenu.SlideMenuAdapter.MenuDesc> {
    Activity act;
    SlideMenu.SlideMenuAdapter.MenuDesc[] items;
    class MenuItem {
        public TextView label;
        public ImageView icon;
    }
    static class MenuDesc {
        public int icon;
        public String label;
    }
    public SlideMenuAdapter(Activity act, SlideMenu.SlideMenuAdapter.MenuDesc[] items) {
        super(act, R.id.menu_label, items);
        this.act = act;
        this.items = items;
        }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View rowView = convertView;
        if (rowView == null) {
            LayoutInflater inflater = act.getLayoutInflater();
            rowView = inflater.inflate(R.layout.menu_listitem, null);
            MenuItem viewHolder = new MenuItem();
            viewHolder.label = (TextView) rowView.findViewById(R.id.menu_label);
            viewHolder.icon = (ImageView) rowView.findViewById(R.id.menu_icon);
            rowView.setTag(viewHolder);
        }

        MenuItem holder = (MenuItem) rowView.getTag();
        String s = items[position].label;
        holder.label.setText(s);
        holder.icon.setImageResource(items[position].icon);

        return rowView;
    }
}

private static boolean menuShown = false;
private static View menu;
private static LinearLayout content;
private static FrameLayout parent;
private static int menuSize;
private static int statusHeight = 0;
private Activity act;
SlideMenu(Activity act) {
    this.act = act;
}
//call this in your onCreate() for screen rotation
public void checkEnabled() {
    if(menuShown)
        this.show(false);
}
public void show() {
//get the height of the status bar
    if(statusHeight == 0) {
        Rect rectgle = new Rect();
        Window window = act.getWindow();
        window.getDecorView().getWindowVisibleDisplayFrame(rectgle);
        statusHeight = rectgle.top;
        }
    this.show(true);
}
public void show(boolean animate) {
    menuSize = Functions.dpToPx(250, act);
    content = ((LinearLayout) act.findViewById(android.R.id.content).getParent());
    FrameLayout.LayoutParams parm = (FrameLayout.LayoutParams) content.getLayoutParams();
    parm.setMargins(menuSize, 0, -menuSize, 0);
    content.setLayoutParams(parm);
//animation for smooth slide-out
    TranslateAnimation ta = new TranslateAnimation(-menuSize, 0, 0, 0);
    ta.setDuration(500);
    if(animate)
        content.startAnimation(ta);
    parent = (FrameLayout) content.getParent();
    LayoutInflater inflater = (LayoutInflater) act.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    menu = inflater.inflate(R.layout.menu, null);
    FrameLayout.LayoutParams lays = new FrameLayout.LayoutParams(-1, -1, 3);
    lays.setMargins(0,statusHeight, 0, 0);
    menu.setLayoutParams(lays);
    parent.addView(menu);
    ListView list = (ListView) act.findViewById(R.id.menu_listview);
    list.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            //handle your menu-click
        }
    });
    if(animate)
        menu.startAnimation(ta);
    menu.findViewById(R.id.overlay).setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            SlideMenu.this.hide();
        }
    });
    Functions.enableDisableViewGroup((LinearLayout) parent.findViewById(android.R.id.content).getParent(), false);
    ((ExtendedViewPager) act.findViewById(R.id.viewpager)).setPagingEnabled(false);
    ((ExtendedPagerTabStrip) act.findViewById(R.id.viewpager_tabs)).setNavEnabled(false);
    menuShown = true;
    this.fill();
}
public void fill() {
    ListView list = (ListView) act.findViewById(R.id.menu_listview);
    SlideMenuAdapter.MenuDesc[] items = new SlideMenuAdapter.MenuDesc[5];
    //fill the menu-items here
    SlideMenuAdapter adap = new SlideMenuAdapter(act, items);
    list.setAdapter(adap);
}
public void hide() {
    TranslateAnimation ta = new TranslateAnimation(0, -menuSize, 0, 0);
    ta.setDuration(500);
    menu.startAnimation(ta);
    parent.removeView(menu);

    TranslateAnimation tra = new TranslateAnimation(menuSize, 0, 0, 0);
    tra.setDuration(500);
    content.startAnimation(tra);
    FrameLayout.LayoutParams parm = (FrameLayout.LayoutParams) content.getLayoutParams();
    parm.setMargins(0, 0, 0, 0);
    content.setLayoutParams(parm);
    Functions.enableDisableViewGroup((LinearLayout) parent.findViewById(android.R.id.content).getParent(), true);
    ((ExtendedViewPager) act.findViewById(R.id.viewpager)).setPagingEnabled(true);
    ((ExtendedPagerTabStrip) act.findViewById(R.id.viewpager_tabs)).setNavEnabled(true);
    menuShown = false;
}
}

Some helping methods (for me, in static Functions.java):

    public static int dpToPx(int dp, Context ctx) {
    Resources r = ctx.getResources();
    return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, r.getDisplayMetrics());
}
//originally: http://stackoverflow.com/questions/5418510/disable-the-touch-events-for-all-the-views
//modified for the needs here
public static void enableDisableViewGroup(ViewGroup viewGroup, boolean enabled) {
    int childCount = viewGroup.getChildCount();
    for (int i = 0; i < childCount; i++) {
        View view = viewGroup.getChildAt(i);
        if(view.isFocusable())
            view.setEnabled(enabled);
        if (view instanceof ViewGroup) {
            enableDisableViewGroup((ViewGroup) view, enabled);
            } else if (view instanceof ListView) {
                if(view.isFocusable())
                    view.setEnabled(enabled);
                ListView listView = (ListView) view;
                int listChildCount = listView.getChildCount();
                for (int j = 0; j < listChildCount; j++) {
                    if(view.isFocusable())
                        listView.getChildAt(j).setEnabled(false);
                    }
                }
        }
    }

Then, the layouts:

Layout of the menu (res/layout/menu.xml)

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent" >
    <LinearLayout
        android:orientation="vertical"
        android:layout_height="fill_parent"
        android:layout_width="250dip"
        android:background="@color/darkblack">
        <ListView
            android:id="@+id/menu_listview"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:divider="@color/dividerblack"
            android:dividerHeight="2dip"  />
    </LinearLayout>
    <FrameLayout
        android:id="@+id/overlay"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >
    </FrameLayout>
</LinearLayout>

Layout of the listitems (res/layout/menu_listitem.xml):

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="fill_parent" >
    <ImageView
        android:id="@+id/menu_icon"
        android:layout_width="30dp"
        android:layout_height="30dp"
        android:layout_marginRight="5dip"
        android:layout_marginLeft="10dip"
        android:layout_marginTop="10dip"
        android:layout_marginBottom="10dip" />

    <TextView
        android:id="@+id/menu_label"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textColor="@color/white"
        android:textSize="24dp"
        android:layout_marginTop="10dip"
        android:layout_marginBottom="10dip" />
</LinearLayout>

How to use it:

In your onCreate():

private SlideMenu slidemenu;
@Override
public void onCreate(Bundle savedInstanceState) {
    //your onCreate code
    slidemenu = new SlideMenu(this);
    slidemenu.checkEnabled();
}

In the handler for your ActionBar homebutton:

slidemenu.show();

That's it!

And now, a little screenshot of it in action:

As far as I know, it is working. If you experience any problems or my explanations are not clear, please contact me!

EDIT: ExtendedViewPager & ExtendedPagerStrip:

ExtendedViewPager:

package your.cool.app;

//source: http://blog.svpino.com/2011/08/disabling-pagingswiping-on-android.html

import android.content.Context;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.view.MotionEvent;

public class ExtendedViewPager extends ViewPager {

private boolean enabled;

public ExtendedViewPager(Context context, AttributeSet attrs) {
    super(context, attrs);
    this.enabled = true;
}

@Override
public boolean onTouchEvent(MotionEvent event) {
    if (this.enabled) {
        return super.onTouchEvent(event);
    }

    return false;
}

@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
    if (this.enabled) {
        return super.onInterceptTouchEvent(event);
    }

    return false;
}

public void setPagingEnabled(boolean enabled) {
    this.enabled = enabled;
}
}

ExtendedPagerTabStrip:

package your.cool.app;

//source: http://blog.svpino.com/2011/08/disabling-pagingswiping-on-android.html

import android.content.Context;
import android.support.v4.view.PagerTabStrip;
import android.util.AttributeSet;
import android.view.MotionEvent;

public class ExtendedPagerTabStrip extends PagerTabStrip {

private boolean enabled;

public ExtendedPagerTabStrip(Context context, AttributeSet attrs) {
    super(context, attrs);
    this.enabled = true;
}

@Override
public boolean onTouchEvent(MotionEvent event) {
    if (this.enabled) {
        return super.onTouchEvent(event);
    }

    return false;
}

@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
    if (this.enabled) {
        return super.onInterceptTouchEvent(event);
    }

    return false;
}

public void setNavEnabled(boolean enabled) {
    this.enabled = enabled;
}
}

I use this SlideMenu for an Activity with a ViewPager with PagerTabStrip for tabs like Talk, Market etc. You can't disable these Views in an easy way, so the two classes above just extend them to stop the onTouch event when disabled.

Answer 4

There are several attempts at doing this, however I have yet to find a lib or source code on how to implement it successfully with actionbar accross all api levels. One promising lib is here

https://github.com/jfeinstein10/SlidingMenu

here is a video of the example app.

here is the Google Play app link.

This does work with ActionbarSherlock. You will have to build the SlidingMenu library with ABS to get it working. Works and looks great!

Answer 5

    public class ImprovedSlidingPaneLayout extends SlidingPaneLayout {
    Context context;
    FrameLayout left;
    FrameLayout right;
    Boolean canOpen = true;
    public ImprovedSlidingPaneLayout(Context context) {
        super(context);
        this.context = context;
        this.left = new FrameLayout(context);
        this.right = new FrameLayout(context);
        this.addView(left);
        this.addView(right);
    }
    public ImprovedSlidingPaneLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.context = context;
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        if (canOpen)
            return super.onInterceptTouchEvent(ev);
        else
            return false;
    }

    public ImprovedSlidingPaneLayout canOpen(Boolean canOpen) {
        this.canOpen = canOpen;
        return this;
    }

    public ImprovedSlidingPaneLayout makeActionBarSlide(Window window){
        ViewGroup decorView = (ViewGroup) window.getDecorView();
        ViewGroup mainContent = (ViewGroup) decorView.getChildAt(0);
        decorView.removeView(mainContent);
        setContentView(mainContent);
        decorView.addView(this);
        return this;
    }

    public ImprovedSlidingPaneLayout setMenuView(View view){
        if((left.getChildCount()== 1)){
            left.removeView(left.getChildAt(0));
        }
        left.addView(view);
        return this;
    }

    public ImprovedSlidingPaneLayout setContentView(View view){
        if((right.getChildCount()== 1)){
            right.removeView(right.getChildAt(0));
        }
        right.addView(view);
        return this;
    }

    public ImprovedSlidingPaneLayout setMenuWidth(int width){
        left.setLayoutParams(new SlidingPaneLayout.LayoutParams(width, ViewGroup.LayoutParams.MATCH_PARENT));
        return this;
    }

}

this is my class extends SlidingPaneLayout. Can slide with actio

Answer 6

I've created my own solution for sliding away the view and revealing a menu underneath, as many other solutions appeared to not work on older Android versions or lacked proper instructions on how to get it to work.

My solution has the following features:

• Provides support for sliding away a view to reveal a menu that lies underneath it
• Both the menu and the view above can be any custom View
• Supported on old Android versions (tested to work at least on Android 2.2)
• Works with PhoneGap / Cordova projects

The solution uses a custom layout, called SlidingMenuLayout, that you are expected to add 2 views to. The first view you add is the menu, the second is the main view.

The simplest way to add the layout to your existing project is to override your Activity's setContentView() method:

@Override
public void setContentView(View view) {
    SlidingMenuLayout layout = new SlidingMenuLayout(this);
    layout.setLayoutParams(new LinearLayout.LayoutParams(
        ViewGroup.LayoutParams.MATCH_PARENT,
        ViewGroup.LayoutParams.MATCH_PARENT, 
        0.0F));
    layout.addView(new MenuView(this));
    layout.addView(view);
    super.setContentView(layout);
}

In this example, MenuView is the view that will actually show the menu. It is up to you to implement this view.
Finally, you can add a button (typically in the top left corner of your main view), that calls openMenu() or closeMenu() on the layout as appropriate.
The code for SlidingMenuLayout is found on the GitHub project page.