Seems that one of the places where it&#39;s best defined is in [Romain Guy&#39;s Blog][1]:

&gt; The DecorView is the view that actually holds the window’s background drawable. Calling getWindow().setBackgroundDrawable() from your Activity changes the background of the window by changing the DecorView‘s background drawable. As mentioned before, this setup is very specific to the current implementation of Android and can change in a future version or even on another device.

  [1]: http://www.curious-creature.org/2009/03/04/speed-up-your-android-ui/

Decor view appears to contain screen resolution? I get 1920.

    var verticalScreenRes = act.window.decorView.height.toFloat() // 1920

then verify

    adb -s emulator-5554 shell wm size
    Physical size: 1080x1920

IPython Notebook comes with [`nbconvert`][1], which can _export_ notebooks to other formats.  But how do I convert text in the opposite direction? I ask because I already have materials, and a good workflow, in a different format, but I would like to take advantage of Notebook&#39;s interactive environment.

A likely solution: A notebook can be created by importing a `.py` file, and the documentation states that when `nbconvert` exports a notebook as a python script, it embeds directives in comments that can be used to recreate the notebook. But the information comes with [a disclaimer][2] about the limitations of this method, and the accepted format is not documented anywhere that I could find. (A sample is shown, oddly enough, in the section describing notebook&#39;s [JSON format][3]). Can anyone provide more information, or a better alternative?

**Edit (1 March 2016):** The accepted answer no longer works, because for some reason this input format is not supported by version 4 of the Notebook API.  **I have added [a self-answer][4]** showing how to import a notebook with the current (v4) API. (I am not un-accepting the current answer, since it solved my problem at the time and pointed me to the resources I used in my self-answer.)


  [1]: http://ipython.org/ipython-doc/2/notebook/nbconvert.html
  [2]: http://ipython.org/ipython-doc/2/notebook/notebook.html#importing-py-files
  [3]: http://ipython.org/ipython-doc/2/notebook/nbconvert.html#notebook-json-file-format
  [4]: https://stackoverflow.com/a/35720002/699305

Converting to (not from) ipython Notebook format

I would to use a couple of icons from Font Awesome.

I see that we can download the entire font-awesome directory and use simple code like `&lt;i class=&quot;fa fa-camera-retro&quot;&gt;&lt;/i&gt;` and use `fa-camera-retro` to display the icons.

Is it possible for me to download only the fonts I will be using?

For the above example if I am using only `&lt;i class=&quot;fa fa-camera-retro&quot;&gt;&lt;/i&gt;`, `fa-camera-retro`, I would like to reduce the directory size by only using the files related to this icon.

How to install only required fonts from Font Awesome?

[http://developer.android.com/reference/android/view/Window.html#getDecorView()][1]:

&gt; Retrieve the top-level window decor view (containing the standard window 
    frame/decorations and the client&#39;s content inside of that), which can be added as a 
    window to the window manager.

This is baffling. It is not clear what the standard &quot;window frame/decorations&quot; are. I&#39;m at a loss as to what this is, exactly, and the documentation is terrible. Does it exist inside the application&#39;s window? Does it surround the application&#39;s window? 

I have never seen an Android window with noticeable window decorations. And &quot;which can be added as a window&quot; implies that a decor view is a window, but that contradicts the class hierarchy (`View` is not a subclass of `Window`).

So what&#39;s the deal? What exactly is the decor view?

  [1]: http://developer.android.com/reference/android/view/Window.html#getDecorView()


What is an Android DecorView?

<a href="http://developer.android.com/reference/android/view/Window.html#getDecorView()" target="_blank" rel="noopener noreferrer">http://developer.android.com/reference/android/view/Window.html#getDecorView()</a>:
> Retrieve the top-level window decor view (containing the standard window
frame/decorations and the client's content inside of that), which can be added as a
window to the window manager.
This is baffling. It is not clear what the standard "window frame/decorations" are. I'm at a loss as to what this is, exactly, and the documentation is terrible. Does it exist inside the application's window? Does it surround the application's window?
I have never seen an Android window with noticeable window decorations. And "which can be added as a window" implies that a decor view is a window, but that contradicts the class hierarchy (<code>View</code> is not a subclass of <code>Window</code>).
So what's the deal? What exactly is the decor view?

I was reading through StackOverflow about this question and I still haven&#39;t found a solution. I notice that sometimes, my app throws this error:

       java.lang.IllegalStateException: Cannot perform this operation because the connection pool has been closed.
            at android.database.sqlite.SQLiteConnectionPool.throwIfClosedLocked(SQLiteConnectionPool.java:962)
            at android.database.sqlite.SQLiteConnectionPool.waitForConnection(SQLiteConnectionPool.java:599)
            at android.database.sqlite.SQLiteConnectionPool.acquireConnection(SQLiteConnectionPool.java:348)
            at android.database.sqlite.SQLiteSession.acquireConnection(SQLiteSession.java:894)
            ...

I have a file called `DatabaseHelper.java` using this approach to get an instance of it:

    public static DatabaseHelper getInstance(Context context) {
        if (mInstance == null) {
            mInstance = new DatabaseHelper(context.getApplicationContext());
        }
        return mInstance;
    }

Then I have methods like this one (that it crashed in the line `cursor.moveToFirst()` with that error). It almost never crashes, but sometimes it does.

    public Profile getProfile(long id) {
        SQLiteDatabase db = this.getReadableDatabase();

        String selectQuery = &quot;SELECT * FROM &quot; + TABLE_PROFILES + &quot; WHERE &quot; + KEY_PROFILES_ID + &quot; = &quot; + id;
        Cursor cursor = db.rawQuery(selectQuery, null);

        // looping through all rows and adding to list
        Profile profile = new Profile();
        if (cursor.moveToFirst()) {
            doWhatEver();
        }
        cursor.close();
        db.close();

        return profile;
    }

So that&#39;s it, in all the methods I use: 

    SQLiteDatabase db = this.getReadableDatabase(); (or Writable)

And then I close the cursor and the db. In this case, the error got throw in the line:

    cursor.moveToFirst();

I do not see why the error says the db is closed if I am calling `this.getReadableDatabase()` before. Please support! Thank you :)

Android: Cannot perform this operation because the connection pool has been closed

I&#39;m trying to make the navigation drawer over the action bar when it was slide to the right like this app:
[Removed]

This is my main activity&#39;s layout:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;android.support.v4.widget.DrawerLayout ...&gt;
        &lt;RelativeLayout android:orientation=&quot;vertical&quot; 
    		android:layout_width=&quot;fill_parent&quot; 
    		android:layout_height=&quot;fill_parent&quot;&gt;
            ...
        &lt;/RelativeLayout&gt;
        &lt;fragment android:name=&quot;com....&quot; 
    		android:layout_gravity=&quot;start&quot; 
    		android:id=&quot;@id/navigation&quot; 
    		android:layout_width=&quot;@dimen/navigation_menu_width&quot; 
    		android:layout_height=&quot;fill_parent&quot; /&gt;
    &lt;/android.support.v4.widget.DrawerLayout&gt;

Some other questions on stackoverflow are similar such as  [this question][2] but all answers are recommend to use sliding menu lib. But this app they still use android.support.v4.widget.DrawerLayout and they succeed. Don&#39;t ask me how I know they use the standard navigation drawer but I sure about it.

Would be really appreciate for your helps.


----------
**HERE IS THE FINAL SOLUTION**: many thanks to **@Peter Cai** THIS WORKS PERFECTLY.
[https://github.com/lemycanh/DrawerOnTopActionBar][3]

![Screen Capture][4] ![Translucent on KitKat][5] 


  [2]: https://stackoverflow.com/questions/21884675/drawerlayout-on-top-of-actionbar
  [3]: https://github.com/lemycanh/DrawerOnTopActionBar
  [4]: http://i.stack.imgur.com/m2m2e.png
  [5]: http://i.stack.imgur.com/uoG9b.png

Android Navigation Drawer on top ActionBar

Searching the web, it is not clear if Java 8 is supported for Android development or not.

Before I download/setup Java 8, can some one point me at any &quot;official&quot; documentation that says Java 8 is or is not supported for Android development.

Is it possible to use Java 8 for Android development?

I want to compare two dates for my Android application, but I got a really weird issue.

For example:

If I set the `back in the past` date to 127 days ago:

    this.dateEvent = System.currentTimeMillis() - (127 * 24 * 3600 * 1000)

And then compare it to the current date (Days between)

		Calendar sDate = getDatePart(new Date(this.dateEvent));
		Calendar eDate = getDatePart(new Date(System.currentTimeMillis()));
		
		int daysBetween = 0;
		while (sDate.before(eDate))
		{
			sDate.add(Calendar.DAY_OF_MONTH, 1);
			daysBetween ++;
		}
		
		while (sDate.after(eDate))
		{
			eDate.add(Calendar.DAY_OF_MONTH, 1);
			daysBetween ++;
		}
		
		return daysBetween;

It will return 22 which is not at all what was expected.

Did I make something wrong or is that an issue with the `Calendar` class ?

Android Days between two dates

I am new to android development, and I have been using the command line tools to create an android project.  I followed all the instructions given in the [tutorial at android developers](http://developer.android.com/training/basics/firstapp/index.html).  However, they are focused more on IDE users.

When I tried extending my MainActivity class from ActionBarActivity instead of just Activity, it threw the following error.

error: package android.support.v7.app does not exist

It was complaining about this import statement.

    import android.support.v7.app.ActionBarActivity;

I made sure to visit the SDK manager, and it says Android Support Library is installed.
I am truly stumped on this one, and I would really appreciate any help you guys could give me.

This might help:
http://developer.android.com/reference/android/support/v7/app/ActionBarActivity.html

Error &quot;package android.support.v7.app does not exist&quot;

I have a directory as such:

    D:\Movies
    D:\Movies\MovieTitle1\backdrops\
    D:\Movies\MovieTitle2\backdrops\
    D:\Movies\MovieTitle3\backdrops\
    D:\Movies\MovieTitle4\backdrops\

How could I have a batch file delete all folders named &quot;Backdrops&quot;? I would prefer it to run recursive from just the D:\ drive if possible.


Batch command to delete all subfolders with a specific name

I&#39;m having a problem always when I&#39;m trying to close a window through the `window.close()` method of the Javascript, while the browser displays the below message on the console:

    &quot;Scripts may close only the windows that were opened by it.&quot;

This occurs in every part of the page. I can run this directly of a link, button, or a script, but this message always are displayed.

I&#39;m tried to replace the `window.close();` method for the functions (or variants of these) below, but nothing happened again:

    window.open(&#39;&#39;, &#39;_self&#39;, &#39;&#39;);
    window.close();

window.close() doesn&#39;t work - Scripts may close only the windows that were opened by it

I am trying to get an overview of the different technologies,
to use when building GUI&#39;s in the Windows World.

For context, I am building a little 2d platform multiplayer game.
(Just for learning purpose..)

My teacher says that he think that WPF is the right way to go,
but it seems that he only compare it to Windows Forms.

My understading is, that here in 2015, Windows Forms is totally dead?

In this other stackover questions, they say WinRT+XAML is for Metro GUI building(Window 8 tiles thing!), and it seems that WPF is something used only for desktop in Window 7/8 and are close related to Silverlight..

https://stackoverflow.com/questions/7416826/how-does-the-new-windows-8-runtime-winrt-windows-store-apps-compare-to-silve
&gt; - The desktop is where the old apps live (red. WFP). 
&gt; - The new class of applications, Metro applications, can be built in a  number of ways,
&gt; including by VB.NET, C# or C++. These three language options can use
&gt; XAML for building the UI. The alternative is to use
&gt; JavaScript/HTML5/CSS for the development of both the UI and
&gt; application code.


My real question is:
Isn&#39;t there ONE good way to build GUI&#39;s in the Window World?

And if not, which technologies should one use on Window 7, Window 8(Desktop and Metro), Window Phone, (And Windows 10!), and even x-box..

Is it to different technologies to be compared this way?

What do you think is the right thing to invest time in?

Windows GUI: WPF or WinRT (2015+)

I have revealing module pattern which looks like this:

    &#39;use strict&#39;;
    
    angular.module(&#39;app&#39;, [])
       .directive(&#39;myDirective&#39;, [&#39;SomeDep&#39;, function (SomeDep) {
           var linker = function (scope, element, attr) {
              // some work
           };

           return {
              link: linker,
              restrict: &#39;E&#39;
           };
       }])
    ;

What I&#39;m having trouble with is integrating a $watch into this. Specifically watching for window resize, with the &#39;$window&#39; service.


**[EDIT]:**

I realised what my issue was this whole time... I was restricting to element, when I forgot that I was implementing it as an attribute...
@_@;

AngularJS $watch window resize inside directive

the MySQL service on local computer started and then stopped. Some services stop automatically if they are not in use by other services or programs.

Can anyone resolve this issue? Thanks.

![][1]


  [1]: http://i.stack.imgur.com/IMfNZ.png

the MySQL service on local computer started and then stopped

I have listview with custom adapter (base adapter). I want to get view from listview by position. I tried `mListView.getChildAt(position)` , but it is not working. How can i get item view by position?

android - listview get item view by position

I am trying to make a view in android with rounded edges. The solution I found so far is to define a shape with rounded corners and use it as the background of that view.

Here is what I did, define a drawable as given below:

&lt;shape xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
    android:shape=&quot;rectangle&quot;&gt;
    &lt;solid android:color=&quot;#E8E9E8&quot;/&gt;

    &lt;padding
    android:top=&quot;2dp&quot;
    android:bottom=&quot;2dp&quot;/&gt;
    &lt;corners android:bottomRightRadius=&quot;20dp&quot;
    android:bottomLeftRadius=&quot;20dp&quot;
    android:topLeftRadius=&quot;20dp&quot;
    android:topRightRadius=&quot;20dp&quot;/&gt;
&lt;/shape&gt;

Now I used this as the background for my layout as below:

    &lt;LinearLayout
            android:orientation=&quot;vertical&quot;
            android:layout_width=&quot;wrap_content&quot;
            android:layout_height=&quot;wrap_content&quot;
            android:layout_marginLeft=&quot;10dp&quot;
            android:layout_marginRight=&quot;10dp&quot;
            android:layout_marginBottom=&quot;10dp&quot;
            android:clipChildren=&quot;true&quot;
            android:background=&quot;@drawable/rounded_corner&quot;&gt;

This works perfectly fine, I can see that the view has rounded edges. 

But my layout has got many other child views in it, say an ImageView or a `MapView`. When I place an `ImageView` inside the above layout, the corners of image are not clipped/cropped, instead it appears full.

I have seen other workarounds to make it work like the one explained [here][1]. 

&gt; But is there a method to set rounded corners for a view and all its
&gt; child views are contained within that main view that has rounded
&gt; corners?

  [1]: http://www.techrepublic.com/article/pro-tip-round-corners-on-an-android-imageview-with-this-hack/

How to make a view with rounded corners?

Before the `AppCompat` update came out today I was able to change the color of buttons in Android L but not on older versions. After including the new AppCompat update I am unable to change the color for either version, when I do try the button just disappears. Does anyone know how to change the button color?

The following pictures shows what I want to achieve:

![picture showing desired result][2]

The white button is default, the red one is what I want.

This is what I was doing previously to change the color of the buttons in the `styles.xml`:

    &lt;item name=&quot;android:colorButtonNormal&quot;&gt;insert color here&lt;/item&gt;

and to do it dynamically:

    button.getBackground().setColorFilter(getResources().getColor(insert color here), PorterDuff.Mode.MULTIPLY);

Also I did change the theme parent from `@android:style/Theme.Material.Light.DarkActionBar` to `Theme.AppCompat.Light.DarkActionBar`

  [2]: http://i.stack.imgur.com/PJqIE.png

Coloring Buttons in Android with Material Design and AppCompat

I&#39;m looking for an equivalent to addHeaderView for a recycler view. Basically I want to have an image with 2 buttons be added as a header to the listview. Is there a different way to add a header view to a recycler view? An example for guidance would be helpful

EDIT 2 (added fragment layouts):

After adding log statements, it seems as though getViewType only ever receives a position of 0. This leads to onCreateView only loading the one layout:

    10-26 16:32:53.766    5449-5449/co.testapp I/logger info﹕ Adapter-&gt; getItemCount: 5
    10-26 16:32:53.766    5449-5449/co.testapp I/logger info﹕ Adapter-&gt; getItemCount: 5
    10-26 16:32:53.766    5449-5449/co.testapp I/logger info﹕ Adapter-&gt; getItemCount: 5
    10-26 16:32:53.766    5449-5449/co.testapp I/logger info﹕ Adapter-&gt; getItemCount: 5
    10-26 16:32:53.766    5449-5449/co.testapp I/logger info﹕ Adapter-&gt; getItemCount: 5
    10-26 16:32:53.766    5449-5449/co.testapp I/logger info﹕ Adapter-&gt; getItemCount: 5
    10-26 16:32:53.766    5449-5449/co.testapp I/logger info﹕ Adapter-&gt; getItemCount: 5
    10-26 16:32:53.766    5449-5449/co.testapp I/logger info﹕ Adapter-&gt; getItemCount: 5
    10-26 16:32:53.766    5449-5449/co.testapp I/logger info﹕ Adapter-&gt; getItemCount: 5
    10-26 16:32:53.766    5449-5449/co.testapp I/logger info﹕ Adapter-&gt; getItemCount: 5
    10-26 16:32:53.766    5449-5449/co.testapp I/logger info﹕ Adapter-&gt; getItemCount: 5
    10-26 16:32:53.766    5449-5449/co.testapp I/logger info﹕ Adapter-&gt; getItemViewType position: 0
    10-26 16:32:53.766    5449-5449/co.testapp I/logger info﹕ Adapter-&gt; getItemViewType position: 0
    10-26 16:32:53.766    5449-5449/co.testapp I/logger info﹕ Adapter-&gt; getItemViewType position: 0
    10-26 16:32:53.766    5449-5449/co.testapp I/logger info﹕ Adapter-&gt; onCreateViewHolder, viewtype: 0
    10-26 16:32:53.766    5449-5449/co.testapp I/logger info﹕ Adapter-&gt; onBindViewHolder, viewType: 0

The fragment transition to load the CommentFragment:

    @Override
    public void onPhotoFeedItemClick(View view, int position) {
        if (fragmentManager == null)
            fragmentManager = getSupportFragmentManager();

    FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

        if (view.getId() == R.id.button_comment){
            CommentFragment commentFragment = CommentFragment.newInstance(&quot;&quot;,&quot;&quot;, position);
            fragmentTransaction.add(R.id.main_activity, commentFragment,&quot;comment_fragment_tag&quot;);
            fragmentTransaction.addToBackStack(Constants.TAG_COMMENTS);
            fragmentTransaction.commit();
        }
    }

The Fragment&#39;s onCreateView:

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.fragment_comment, container, false);
        mRecyclerView = (RecyclerView) view.findViewById(R.id.list_recylclerview);
        mRecyclerView.setLayoutManager(new LinearLayoutManager(_context));
        mRecyclerView.setItemAnimator(new DefaultItemAnimator());
        mAdapter = new CommentAdapter(R.layout.row_list_comments, R.layout.row_header_comments, _context, comments);
        mRecyclerView.setAdapter(mAdapter);
        return view;
    }

The fragment containing the recycleview:

    &lt;RelativeLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        xmlns:tools=&quot;http://schemas.android.com/tools&quot;
        android:layout_width=&quot;fill_parent&quot;
        android:layout_height=&quot;fill_parent&quot;
        tools:context=&quot;co.testapp.fragments.CommentFragment&quot;
        android:background=&quot;@color/white&quot;&gt;
            &lt;RelativeLayout
                android:layout_width=&quot;fill_parent&quot;
                android:layout_height=&quot;fill_parent&quot;
                android:orientation=&quot;vertical&quot;&gt;
                &lt;android.support.v7.widget.RecyclerView
                    xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
                    android:id=&quot;@+id/list_recylclerview&quot;
                    android:layout_width=&quot;match_parent&quot;
                    android:layout_height=&quot;200dp&quot; /&gt;
            &lt;/RelativeLayout&gt;
    &lt;/RelativeLayout&gt;

The comments row layout:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    
    &lt;RelativeLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        android:orientation=&quot;vertical&quot; android:layout_width=&quot;match_parent&quot;
        android:layout_height=&quot;match_parent&quot; android:layout_margin=&quot;10dp&quot;
        android:background=&quot;@color/white&quot;&gt;
        &lt;!--Profile Picture--&gt;
        &lt;ImageView
            android:layout_width=&quot;80dp&quot;
            android:layout_height=&quot;80dp&quot;
            android:id=&quot;@+id/profile_picture&quot;
            android:background=&quot;@color/blue_testapp&quot;/&gt;
        &lt;!--Name--&gt;
        &lt;TextView
            android:layout_width=&quot;wrap_content&quot;
            android:layout_height=&quot;wrap_content&quot;
            android:layout_marginLeft=&quot;10dp&quot;
            android:text=&quot;First Name Last Name&quot;
            android:textSize=&quot;16dp&quot;
            android:textColor=&quot;@color/blue_testapp&quot;
            android:id=&quot;@+id/name_of_poster&quot;
            android:layout_toRightOf=&quot;@id/profile_picture&quot;
            /&gt;
        &lt;!--Comment--&gt;
        &lt;TextView
            android:layout_width=&quot;wrap_content&quot;
            android:layout_height=&quot;wrap_content&quot;
            android:layout_margin=&quot;10dp&quot;
            android:layout_marginTop=&quot;-5dp&quot;
            android:text=&quot;This is a test comment&quot;
            android:textSize=&quot;14dp&quot;
            android:textColor=&quot;@color/black&quot;
            android:id=&quot;@+id/comment&quot;
            android:layout_below=&quot;@id/name_of_poster&quot;
            android:layout_toRightOf=&quot;@id/profile_picture&quot;/&gt;
    &lt;/RelativeLayout&gt;

The header

    &lt;LinearLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
                  android:orientation=&quot;vertical&quot;
                  android:layout_width=&quot;match_parent&quot;
                  android:layout_height=&quot;match_parent&quot;&gt;
        &lt;ImageView
            android:layout_width=&quot;wrap_content&quot;
            android:layout_height=&quot;300dp&quot;
            android:id=&quot;@+id/header_photo&quot;
            android:layout_gravity=&quot;center_horizontal&quot;/&gt;
    &lt;/LinearLayout&gt;

The Adapter code (thanks to hister for getting me started):

    public class CommentAdapter extends RecyclerView.Adapter&lt;ViewHolder&gt;{
    
        private final int rowCardLayout;
        public static Context mContext;
        private final int headerLayout;
        private final String [] comments;
        private static final int HEADER = 0;
        private static final int OTHER = 1;
    
        public CommentAdapter(int rowCardLayout, int headerLayout, Context context, String [] comments) {
            this.rowCardLayout = rowCardLayout;
            this.mContext = context;
            this.comments = comments;
            this.headerLayout = headerLayout;
        }
    
        @Override
        public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
            logger.i(&quot;onCreateViewHolder, viewtype: &quot; + i); //viewtype always returns 0 so OTHER layout is never inflated
            if (i == HEADER) {
                View v = LayoutInflater.from(viewGroup.getContext()).inflate(headerLayout, viewGroup, false);
                return new ViewHolderHeader(v);
            }
            else if (i == OTHER){
                View v = LayoutInflater.from(viewGroup.getContext()).inflate(rowCardLayout, viewGroup, false);
                return new ViewHolderComments(v);
            }
            else 
              throw new RuntimeException(&quot;Could not inflate layout&quot;);
        }
    
        @Override
        public void onBindViewHolder(ViewHolder viewHolder, int i) {
            logger.i(&quot;onBindViewHolder, viewType: &quot; + i);
    
            if (viewHolder instanceof ViewHolderComments)
                ((ViewHolderComments) viewHolder).comment.setText(comments[i].toString());
            if (viewHolder instanceof ViewHolderHeader)
               ((ViewHolderHeader) viewHolder).header.setImageResource(R.drawable.image2);
            else {
                logger.e(&quot;no instance of viewholder found&quot;);
            }
        }
    
        @Override
        public int getItemCount() {
            int count = comments.length + 1;
            logger.i(&quot;getItemCount: &quot; + count);
            return count;
        }
    
        @Override
        public int getItemViewType(int position) {
            logger.i(&quot;getItemViewType position: &quot; + position);
            if (position == HEADER)
                return HEADER;
            else
                return OTHER;
        }
    
        public static class ViewHolderComments extends RecyclerView.ViewHolder {
            public TextView comment;
            public ImageView image;
    
            public ViewHolderComments(View itemView) {
                super(itemView);
                comment = (TextView) itemView.findViewById(R.id.comment);
                image = (ImageView) itemView.findViewById(R.id.image);
            }
        }
    
        public static class ViewHolderHeader extends RecyclerView.ViewHolder {
            public final ImageView header;
    
            public ViewHolderHeader(View itemView){
                super(itemView);
                header = (ImageView) itemView.findViewById(R.id.header_photo);
            }
        }
    }



Using the above code, only the header layout is displayed as viewType is always 0. It looks like [this][1]. If I force the other layout it looks like [this][2]:

  [1]: http://i.imgur.com/kWJuqTP.png
  [2]: http://i.imgur.com/PjBw4bl.png

Is there an addHeaderView equivalent for RecyclerView?

Is there any way to add elevation to a `View` in pre-lollipop devices without wrapping them in a `CardView`?

Content Type	Original Author	Original Content on Stackoverflow
Question	nmr	View Question on Stackoverflow
Solution 1 - Android	nKn	View Answer on Stackoverflow
Solution 2 - Android	the_prole	View Answer on Stackoverflow

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