[L Developer Preview][1] is the preview of Android 5.0

[Android 4.4W][2] is Android Wear SDK


  [1]: http://developer.android.com/preview/setup-sdk.html
  [2]: http://developer.android.com/wear/index.html

Android 4.4W Target Android Watches

See Image: http://i.stack.imgur.com/ztzXa.jpg

while Android L (API20, L Preview) is the preview of the upcoming release of Android. It is subject to change and it&#39;s stability is not guaranteed 

Android Lollipop is API 21 , so this is possible to differentiate between them:

https://developer.android.com/about/versions/android-5.0.html

Android 4.4W is for Android Wear (mostly smart watches).

Am trying to validate an Email id field in angularJs using ng-pattern directive.
    
But am new to AngularJs. I need to show an error message as soon as the user enters the wrong email id.
    
The code which I have below is am trying to solve. Help me out with using ng-pattern for getting the proper result.
    
    &lt;script type=&quot;text/javascript&quot; src=&quot;/Login/script/ang.js&quot;&gt;&lt;/script&gt;
    &lt;script type=&quot;text/javascript&quot;&gt;
        function Ctrl($scope) {
            $scope.text = &#39;enter email&#39;;
            $scope.word = /^[a-z]+[a-z0-9._]+@[a-z]+\.[a-z.]{2,5}$/;
        }
    &lt;/script&gt;
        &lt;/head&gt;
    &lt;body&gt;
        &lt;form name=&quot;myform&quot; ng-controller=&quot;Ctrl&quot;&gt;
            &lt;input type=&quot;text&quot; ng-pattern=&quot;word&quot; name=&quot;email&quot;&gt;
            &lt;span class=&quot;error&quot; ng-show=&quot;myform.email.$error.pattern&quot;&gt;
                invalid email!
            &lt;/span&gt;
            &lt;input type=&quot;submit&quot; value=&quot;submit&quot;&gt;
        &lt;/form&gt;
    &lt;/body&gt;



How to validate email id in angularJs using ng-pattern

In my iOS app, I am using `NSURLSessionTask` to download json data to my app. I discovered that when I call the url directly from the browser, I get an up to date json and when it&#39;s called from within the app, I get an older version of the json.

Is this due to caching? How can I tell `NSURLSessionTask` to not use caching.

This is the call I use:

    NSURLSessionTask *task = [[NSURLSession sharedSession] dataTaskWithURL:url completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {


Thanks!

How to disable caching from NSURLSessionTask

I&#39;m updating my SDK Manager in Eclipse, and there are two new downloads:

Android L (API20, L Preview)

Android 4.4W (API20)

I&#39;m confused because they&#39;re both referred to as &quot;API 20&quot;.  And I&#39;m not sure what the &quot;W&quot; in &quot;4.4W&quot; is referring to.

What is the difference between Android 4.4W (API20) and Android L (API20, L Preview) in the SDK Manager?

I'm updating my SDK Manager in Eclipse, and there are two new downloads:
Android L (API20, L Preview)
Android 4.4W (API20)
I'm confused because they're both referred to as "API 20". And I'm not sure what the "W" in "4.4W" is referring to.

So, seeing that the new Android L is out, I said I should give it a try. I installed the new ADT update from SDK tools and then from the updates. After Eclipse restart, I get the error that Android Dependencies failed to load because \android-sdk\tools\support\annotations.jar cannot be found. 

I checked the folder and it does not have the file.

Well, I said to myself that maybe the ADT update didn&#39;t go well so seeing that the new eclipse 4.4 is out I thought I could do a fresh install. So downloaded eclipse 4.4, installed the ADT tools and android sdk... and I get the same error.

Any ideas on how to fix this ?

Fail to find annotations.jar after updating to ADT 23

Trying to use the new RecyclerView from the support library. I downloaded the 20 update for the support library using the SDK manager.

I&#39;ve added the jar file to the libs folder - and added to build path - no luck using the RecyclerView.

Tried to use also the gradle dependency according to [Android Developer&#39;s API][1] - not sure if this is the right place to look - this page is related more to AndroidTV :

     com.android.support:recyclerview-v7:20.0.+

Cannot gradle sync the project.

Any ideas?

  [1]: http://developer.android.com/preview/tv/start/index.html

How to import RecyclerView for Android L-preview

I just installed the new SDK tools (Android L Developer Preview), and I&#39;m trying to use `RecyclerView` but it seems to be missing.

From my understanding I should include the `v7` support library, but I can&#39;t seem to do that...

I can&#39;t seem to find the v7 library in the SDK folder (I did install the Android Support Library from the SDK Manager).



RecyclerView is missing

    cannot.find.zip.align=The zipalign tool was not found in the SDK.
    
    Please update to the latest SDK and re-export your application
    or run zipalign manually.
    
    Aligning applications allows Android to use application resources
    more efficiently.

This is the message I received when I tried to publish my app. I&#39;m using the latest revision of Android SDK Tools (23 which was released today) and SDK Platform-tools (20 which was also released today). I got an APK out of it, but if I tried to upload it to Google Play I got an error complaining that it is not zip aligned.

Running zipalign manually fixes the apk, but does anyone know what causes this and how to fix it?



cannot find zip-align when publishing app

From examples provided on the Android Developer pages I see that new Views, like the `RecyclerView`, are backward compatible (`android.support.v7.widget.RecyclerView`).

Are all the new things introduced in Material Design backward compatible (to which version)?

Material Design backward compatibility

I&#39;d like to use the new CardView widget that was introduced with the new Android L Developer Preview Support Library (As mentioned [here][1]), which seems to be part of a new revision of the v7 support library.

I have now updated my SDK version, downloaded the newest Support Library package, but I still cannot find the new CardView widget.

I already searched the web and the official docs, but could not get any hints on where I can get the new support library.

Any help is highly appreciated!

EDIT: I&#39;m using ADT/Eclipse

  [1]: https://developer.android.com/preview/material/compatibility.html

Using android.support.v7.widget.CardView in my project (Eclipse)

I have a Strange problem with the new ADT version. I have downloaded the new Eclipse from [eclipse.org][1] then I install ADT on it. Everything works fine; I can create a project for android and all thing work well, except:

When trying to create one xml layout, I get the following error:

    Exception raised during rendering: java.lang.System.arraycopy

and in the Error Log I see:

    Failed to render set of icons for AnalogClock, AutonCompleteTextView, button, SmallButton , ....

Ff I change `EditText` to `TextView`, the error disappears. I can run my program even with this warning, but I want to see my layout in graphical section.

My layout is:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;LinearLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        android:layout_width=&quot;match_parent&quot;
        android:layout_height=&quot;match_parent&quot;
        android:background=&quot;@drawable/settingback&quot;
        android:orientation=&quot;vertical&quot;
        android:weightSum=&quot;480&quot; &gt;
    
        &lt;LinearLayout
            android:layout_width=&quot;match_parent&quot;
            android:layout_height=&quot;0dp&quot;
            android:layout_weight=&quot;50&quot;
            android:gravity=&quot;right&quot;
            android:orientation=&quot;horizontal&quot; &gt;
    
            &lt;Button
                android:id=&quot;@+id/close&quot;
                android:layout_width=&quot;50dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:background=&quot;#00000000&quot; /&gt;
        &lt;/LinearLayout&gt;
    
        &lt;View
            android:id=&quot;@+id/view1&quot;
            android:layout_width=&quot;wrap_content&quot;
            android:layout_height=&quot;0dp&quot;
            android:layout_weight=&quot;20&quot; /&gt;
    
        &lt;LinearLayout
            android:layout_width=&quot;match_parent&quot;
            android:layout_height=&quot;0dp&quot;
            android:layout_weight=&quot;40&quot;
            android:orientation=&quot;horizontal&quot;
            android:weightSum=&quot;320&quot; &gt;
    
            &lt;View
                android:id=&quot;@+id/view8&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;40&quot; /&gt;
    
            &lt;EditText
                android:id=&quot;@+id/textView1&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;240&quot;
                android:gravity=&quot;center|right&quot;
                android:background=&quot;#00000000&quot;/&gt;
    
            &lt;View
                android:id=&quot;@+id/view9&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;40&quot; /&gt;
        &lt;/LinearLayout&gt;
    
        &lt;View
            android:id=&quot;@+id/view2&quot;
            android:layout_width=&quot;match_parent&quot;
            android:layout_height=&quot;0dp&quot;
            android:layout_weight=&quot;20&quot; /&gt;
    
        &lt;LinearLayout
            android:layout_width=&quot;match_parent&quot;
            android:layout_height=&quot;0dp&quot;
            android:layout_weight=&quot;35&quot;
            android:orientation=&quot;horizontal&quot; &gt;
    
            &lt;View
                android:id=&quot;@+id/view10&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;40&quot; /&gt;
    
            &lt;EditText
                android:id=&quot;@+id/textView2&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;240&quot;
                android:gravity=&quot;center|right&quot;
                android:background=&quot;#00000000&quot; /&gt;
    
            &lt;View
                android:id=&quot;@+id/view11&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;40&quot; /&gt;
        &lt;/LinearLayout&gt;
    
        &lt;View
            android:id=&quot;@+id/view3&quot;
            android:layout_width=&quot;wrap_content&quot;
            android:layout_height=&quot;0dp&quot;
            android:layout_weight=&quot;10&quot; /&gt;
    
        &lt;LinearLayout
            android:layout_width=&quot;match_parent&quot;
            android:layout_height=&quot;0dp&quot;
            android:layout_weight=&quot;35&quot;
            android:orientation=&quot;horizontal&quot; &gt;
    
            &lt;View
                android:id=&quot;@+id/view12&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;40&quot; /&gt;
    
            &lt;EditText
                android:id=&quot;@+id/textView3&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;240&quot;
                android:gravity=&quot;center|right&quot;
                android:background=&quot;#00000000&quot;/&gt;
    
            &lt;View
                android:id=&quot;@+id/view13&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;40&quot; /&gt;
        &lt;/LinearLayout&gt;
    
        &lt;View
            android:id=&quot;@+id/view4&quot;
            android:layout_width=&quot;wrap_content&quot;
            android:layout_height=&quot;0dp&quot;
            android:layout_weight=&quot;105&quot; /&gt;
    
        &lt;LinearLayout
            android:layout_width=&quot;match_parent&quot;
            android:layout_height=&quot;0dp&quot;
            android:layout_weight=&quot;40&quot;
            android:orientation=&quot;horizontal&quot; &gt;
    
            &lt;View
                android:id=&quot;@+id/view14&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;40&quot; /&gt;
    
            &lt;EditText
                android:id=&quot;@+id/textView4&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;240&quot;
                android:gravity=&quot;center|right&quot;
                android:background=&quot;#00000000&quot; /&gt;
    
            &lt;View
                android:id=&quot;@+id/view15&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;40&quot; /&gt;
        &lt;/LinearLayout&gt;
    
        &lt;View
            android:id=&quot;@+id/view5&quot;
            android:layout_width=&quot;match_parent&quot;
            android:layout_height=&quot;0dp&quot;
            android:layout_weight=&quot;5&quot; /&gt;
    
        &lt;LinearLayout
            android:layout_width=&quot;match_parent&quot;
            android:layout_height=&quot;0dp&quot;
            android:layout_weight=&quot;40&quot; &gt;
    
            &lt;View
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;40&quot;
                 /&gt;
    
            &lt;EditText
                android:id=&quot;@+id/textView6&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;240&quot;
                android:gravity=&quot;center|right&quot;
                android:background=&quot;#00000000&quot; /&gt;
    
            &lt;View
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;40&quot; /&gt;
        &lt;/LinearLayout&gt;
    
        &lt;View
            android:id=&quot;@+id/view6&quot;
            android:layout_width=&quot;match_parent&quot;
            android:layout_height=&quot;0dp&quot;
            android:layout_weight=&quot;20&quot; /&gt;
    
        &lt;LinearLayout
            android:layout_width=&quot;match_parent&quot;
            android:layout_height=&quot;0dp&quot;
            android:layout_weight=&quot;30&quot;
            android:orientation=&quot;horizontal&quot;
            android:weightSum=&quot;320&quot; &gt;
    
            &lt;View
                android:id=&quot;@+id/view16&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;90&quot; /&gt;
    
            &lt;CheckBox
                android:id=&quot;@+id/shake&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_gravity=&quot;center&quot;
                android:layout_weight=&quot;70&quot;
                android:gravity=&quot;center&quot; /&gt;
    
            &lt;View
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;10&quot; /&gt;
    
            &lt;CheckBox
                android:id=&quot;@+id/ring&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_gravity=&quot;center&quot;
                android:layout_weight=&quot;70&quot;
                android:gravity=&quot;center&quot; /&gt;
    
            &lt;View
                android:id=&quot;@+id/view17&quot;
                android:layout_width=&quot;0dp&quot;
                android:layout_height=&quot;match_parent&quot;
                android:layout_weight=&quot;80&quot; /&gt;
        &lt;/LinearLayout&gt;
    
        &lt;View
            android:id=&quot;@+id/view7&quot;
            android:layout_width=&quot;match_parent&quot;
            android:layout_height=&quot;0dp&quot;
            android:layout_weight=&quot;30&quot; /&gt;
    
    &lt;/LinearLayout&gt;

I searched for an answer here but didn&#39;t find any. How can I fix this? 

PS: This problem happened on ADT 23 - I tried it with ADT 22.6, and it worked well.

  [1]: http://www.eclipse.org

Exception raised during rendering: java.lang.System.arraycopy

I downloaded the new Eclipse Luna (ver. 4.4) and changed to Dark Theme, but the code editor is not changing. See the screen-shot:

![enter image description here][1]


  [1]: http://i.stack.imgur.com/Rc6m7.png

I tried this on MAC, Windows and Linux, always the same result.


Eclipse Luna dark theme, code editor white

I downloaded and installed Eclipse ADT with android SDK for windows from  this website [Developer.Android][1]. When I try to Create AVD Device am getting error that `Location of Android SDK has not been setup in Preferences.` I open `Preferences` from `Windows`menu bar and then i try to set SDK Location but it showing error **This Android SDK requires ADT version 23.0.0 or above.  Current version is 22.6.  Please update ADT to the latest version.** How to update it ? help me to create android project.  


  [1]: http://developer.android.com/sdk/index.html

This Android SDK requires ADT version 23.0.0 or above. Current version is 22.6. Please update ADT to the latest version?

Taking a look at the API diff report for the Android &quot;L&quot; preview, I see that all methods related to navigation modes in the `ActionBar` class (such as `setNavigationMode()`, `addTab()`, `selectTab()`, &amp;c). are now deprecated.

The documentation explains:

&gt; Action bar navigation modes are deprecated and not supported by inline
&gt; toolbar action bars. Consider using other common navigation patterns
&gt; instead.

What is the supposed replacement?

Also, is &quot;inline toolbar action bars&quot; a new concept? I don&#39;t think I&#39;ve heard of it before.

Action bar navigation modes are deprecated in Android L

could anybody explain to me how to implement some of the visual touch feedback that was demonstrated at Google I/O 2014 within a CardView.

Here is how I am using the CardView in XML, there is probably something small that I am missing, so I just wondered if anyone could help me?.

    &lt;!-- A CardView --&gt;
    &lt;android.support.v7.widget.CardView
        xmlns:card_view=&quot;http://schemas.android.com/apk/res-auto&quot;
        android:id=&quot;@+id/CardView_1&quot;
        android:layout_width=&quot;match_parent&quot;
        android:layout_height=&quot;wrap_content&quot;
        android:layout_marginLeft=&quot;10dp&quot;
        android:layout_marginRight=&quot;10dp&quot;
        android:layout_marginTop=&quot;10dp&quot; 
        card_view:cardCornerRadius=&quot;4dp&quot;
        android:elevation=&quot;2dp&quot;&gt;

        &lt;LinearLayout
            android:id=&quot;@+id/LinearLayout_1&quot;
            android:layout_width=&quot;match_parent&quot;
            android:layout_height=&quot;wrap_content&quot;
            android:orientation=&quot;horizontal&quot;
            android:onClick=&quot;RunSomeMethod&quot;&quot;&gt;

        &lt;!-- Main CardView Content In Here--&gt;

        &lt;/LinearLayout&gt; &lt;/android.support.v7.widget.CardView&gt;


Content Type	Original Author	Original Content on Stackoverflow
Question	JDJ	View Question on Stackoverflow
Solution 1 - Android	VenomVendor	View Answer on Stackoverflow
Solution 2 - Android	Abdelrahman Aly	View Answer on Stackoverflow
Solution 3 - Android	android developer	View Answer on Stackoverflow

What is the difference between Android 4.4W (API20) and Android L (API20, L Preview) in the SDK Manager?

Android Problem Overview

Android Solutions

Solution 1 - Android

Solution 2 - Android

Solution 3 - Android

How to disable caching from NSURLSessionTask

How to validate email id in angularJs using ng-pattern

Attributions