[Here][1] is a really nice explanation:

Put your &quot;back.png&quot; image on &quot;drawable&quot; folder. Then create a drawable &quot;backrepeat.xml&quot; like that:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;bitmap xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        android:src=&quot;@drawable/back&quot; 
        android:tileMode=&quot;repeat&quot; /&gt; 

In your layout, add `android:background=&quot;@drawable/backrepeat&quot;`:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;LinearLayout
        android:id=&quot;@+id/MainLayout&quot;
        xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        android:layout_width=&quot;fill_parent&quot;
        android:layout_height=&quot;fill_parent&quot;
        android:orientation=&quot;vertical&quot;
        android:background=&quot;@drawable/backrepeat&quot;&gt;
    
    &lt;/LinearLayout&gt;

As is the case with many Android good practices/handy tricks, it can be traced back to Romain Guy.


  [1]: http://androidblogger.blogspot.com/2009/01/how-to-have-tiled-background-cont.html

Is there a way to clear the $Error variable that tracks errors in a PowerShell session?

If so, how do you do it?

I have tried:
`$error.clear`

In the PowerShell ISE on Windows 7 and the $Error array is still populated.


How to clear $Error in PowerShell?

Is there a way to pass a variable into a regex in jQuery/Javascript?

I wanna do something like:

    var variable_regex = &quot;bar&quot;;
    var some_string = &quot;foobar&quot;;

    some_string.match(/variable_regex/);

In Ruby you would be able to do:

`some_string.match(/#{variable_regex}/)`

Found a useful post:

https://stackoverflow.com/questions/185510/how-can-i-concatenate-regex-literals-in-javascript



How to pass a variable into regex in jQuery/Javascript

I have a pattern (.png image 4x4px) and have to fill the layout with it.

Does anyone know how to do this? 

If I simply select the drawable as a background the image, it is stretched; instead it needs to be repeated along the x and y axis.

Android: how to create a background from pattern?

I have a pattern (.png image 4x4px) and have to fill the layout with it.
Does anyone know how to do this?
If I simply select the drawable as a background the image, it is stretched; instead it needs to be repeated along the x and y axis.

I&#39;ve a `ListView` where every element in the list contains a TextView and two different Buttons. Something like this:

    ListView
    --------------------
    [Text]
    [Button 1][Button 2]
    --------------------
    [Text]
    [Button 1][Button 2]
    --------------------
    ... (and so on) ...

With this code I can create an `OnItemClickListener` for the whole item:

    listView.setOnItemClickListener(new OnItemClickListener() {
    	@Override
    	public void onItemClick(AdapterView&lt;?&gt; list, View view, int position, long id) {
    		Log.i(TAG, &quot;onListItemClick: &quot; + position);
    		
    		}
    
    	}
    });
However, I don&#39;t want the whole item to be clickable, but only the two buttons of each list element.

So my question is, how do I implement a onClickListener for these two buttons with the following parameters:

 - `int button` (which button of the element has been clicked)
 - `int position` (which is the element in the list on which the button click happened)


----------
**Update:** I found a solution as described in my answer below. Now I can click/tap the button via the touch screen. However, I can&#39;t manually select it with the trackball. It always selects the whole list item and from there goes directly to the next list item ignoring the buttons, even though I set `.setFocusable(true)` and `setClickable(true)` for the buttons in `getView()`.

I also added this code to my custom list adapter:

    @Override
    public boolean  areAllItemsEnabled() {
    	return false;			
    }
    
    @Override
    public boolean isEnabled(int position) {
            return false;
    }

This causes that no list item is selectable at all any more. But it didn&#39;t help in making the nested buttons selectable.

Anyone an idea?



Android: ListView elements with multiple clickable buttons

According to:

&lt;http://developer.android.com/sdk/android-2.0-highlights.html&gt;

Android 2.0 should support the HTML5 video element. I haven&#39;t been able to get this to work using a Motorola Droid, and haven&#39;t been able to successfully view a video on any of the HTML5 video example pages out there. Since there currently isn&#39;t support for QuickTime or Flash, this is the only other thing I can think of for embedding mp4 video in a web page. Has anyone had any luck with this?

HTML5 &lt;video&gt; element on Android

I&#39;m adding TextViews programmatically in a for-loop and add them to an ArrayList.

How do I use `TextView.setId(int id)`? What Integer ID do I come up with so it doesn&#39;t conflict with other IDs?

Android: View.setID(int id) programmatically - how to avoid ID conflicts?

I am about to start developing an android app and need to get an IDE. Eclipse and the android eclipse plugin appears to be the natural choice. However I am familiar with intelliJ and re-sharper so I would prefer use intelliJ. 

Has anyone used https://code.google.com/archive/p/idea-android/? Is this any good?

Should I just bite the bullet and learn Eclipse?

What is the best IDE to develop Android apps in?

I want to get the currently running [Android Emulator][1]&#39;s IP address through code.
How can it be achieved?


  [1]: http://en.wikipedia.org/wiki/Android_%28operating_system%29#Software_development_kit

How to get the Android Emulator&#39;s IP address?

I am still struggling with drawing a line with CGContext.  I have actually go to line to draw, but now I need the background of the Rect to be transparent so the existing background shows thru.  Here&#39;s my test code: 

    (void)drawRect:(CGRect)rect
    {
        CGContextRef context = UIGraphicsGetCurrentContext();
        CGContextSetFillColorWithColor(context, [UIColor clearColor].CGColor);
        CGContextSetAlpha(context,0.0);
        CGContextFillRect(context, rect);
        
        CGContextSetStrokeColorWithColor(context, [UIColor whiteColor].CGColor);
        CGContextSetLineWidth(context, 5.0);
        CGContextMoveToPoint(context, 100.0,0.0);
        CGContextAddLineToPoint(context,100.0, 100.0);
        CGContextStrokePath(context);
    }
Any ideas?


Setting A CGContext Transparent Background

I&#39;m trying to set the background color of a View (in this case a Button).

I use this code:

    // set the background to green
    v.setBackgroundColor(0x0000FF00 );
    v.invalidate();


It causes the Button to disappear from the screen.   What am I doing wrong, and what is the correct way to change the background color on any View?

Thanks.

How to set background color of a View

Does anyone know how to change the background color of a cell using UITableViewCell, for each selected cell? I created this UITableViewCell inside the code for TableView.


Changing background color of selected cell?

I need to have a (crossdomain) iframe with dynamic width and height.

My question is,
Can I create an iframe with 100% size and a transparent background that will show the parent of this iframe, behind it ?

Can I attach a css property or a transparent gif for the iframe background to make that effect ?

Thanks.

Transparent Iframe Body

how to add background image to activity?

How do you organize and manage your helper objects like the database engine, user notification, error handling and so on in a PHP based, object oriented project?

Say I have a large PHP CMS.
The CMS is organized in various classes. A few examples:

 - the database object
 - user management
 - an API to create/modify/delete items
 - a messaging object to display messages to the end user
 - a context handler that takes you to the right page
 - a navigation bar class that shows buttons
 - a logging object
 - possibly, custom error handling
 
etc.

I am dealing with the eternal question, how to best make these objects accessible to each part of the system that needs it.

my first apporach, many years ago was to have a $application global that contained initialized instances of these classes.
    
    global $application;
    $application-&gt;messageHandler-&gt;addMessage(&quot;Item successfully inserted&quot;);

I then changed over to the Singleton pattern and a factory function:

    $mh =&amp;factory(&quot;messageHandler&quot;);
    $mh-&gt;addMessage(&quot;Item successfully inserted&quot;);

but I&#39;m not happy with that either. Unit tests and encapsulation become more and more important to me, and in my understanding the logic behind globals/singletons destroys the basic idea of OOP.

Then there is of course the possibility of giving each object a number of pointers to the helper objects it needs, probably the very cleanest, resource-saving and testing-friendly way but I have doubts about the maintainability of this in the long run. 

Most PHP frameworks I have looked into use either the singleton pattern, or functions that access the initialized objects. Both fine approaches, but as I said I&#39;m happy with neither. 

I would like to broaden my horizon on what common patterns exist here. I am looking for examples, additional ideas and pointers towards resources that discuss this from a **long-term**, **real-world** perspective. 

Also, I&#39;m interested to hear about specialized, niche or **plain weird** approaches to the issue.




In a PHP project, what patterns exist to store, access and organize helper objects?

How does one implement the Singleton design pattern in the go programming language?

Singleton in go

What is the difference between the terms Factory, Provider and Service?

Just getting into NHibernate and its Repository pattern (POCO classes, etc).

Difference between a Factory, Provider and a Service?

A long time ago I have read an article (I believe a blog entry) which put me on the &quot;right&quot; track on naming objects: Be very very scrupulous about naming things in your program.

For example if my application was (as a typical business app) handling users, companies and addresses I&#39;d have a `User`, a `Company` and an `Address` domain class - and probably somewhere a `UserManager`, a `CompanyManager` and an `AddressManager` would pop up that handles those things.

So can you tell what those `UserManager`, `CompanyManager` and `AddressManager` do? No, because Manager is a very very generic term that fits to anything you can do with your domain objects.

The article I read recommended using very specific names. If it was a C++ application and the `UserManager`&#39;s job was allocating and freeing users from the heap it would not manage the users but guard their birth and death. Hmm, maybe we could call this a `UserShepherd`.

Or maybe the `UserManager`&#39;s job is to examine each User object&#39;s data and sign the data cryptographically. Then we&#39;d have a `UserRecordsClerk`.


Now that this idea stuck with me I try to apply it. And find this simple idea amazingly hard.

I can describe what the classes do and (as long as I don&#39;t slip into quick &amp; dirty coding) the classes I write do exactly **one** thing. What I miss to go from that description to the names is a kind of catalogue of names, a vocabulary that maps the concepts to names.

Ultimately I&#39;d like to have something like a pattern catalogue in my mind (frequently design patterns easily provide the object names, e.g. a _factory_)


- Factory - Creates other objects (naming taken from the design pattern)
- Shepherd - A shepherd handles the lifetime of objects, their creation and shutdown
- Synchronizer - Copies data between two or more objects (or object hierarchies)
- Nanny - Helps objects reach &quot;usable&quot; state after creation - for example by wiring to other objects

- etc etc.


So, how do you handle that issue? Do you have a fixed vocabulary, do you invent new names on the fly or do you consider naming things not-so-important or wrong?


P.S.: I&#39;m also interested in links to articles and blogs discussing the issue. As a start, here is the original article that got me thinking about it: [Naming Java Classes without a &#39;Manager&#39;][1]


----------


## Update: Summary of answers ##

Here&#39;s a little summary of what I learned from this question in the meantime.

 - Try not to create new metaphors (Nanny)
 - Have a look at what other frameworks do

Further articles/books on this topic:

 - [What names do you find yourself prepending/appending to classes regularly?][2] 
 - [What’s the best approach to naming classes?][3]
 - Book: [Design Patterns: Elements of Reusable Object-Oriented Software (Hardcover)][4]
 - Book: [Patterns of Enterprise Application Architecture (Hardcover)][5]
 - Book: [Implementation Patterns (Paperback)][6]


And a current list of name prefixes/suffixes I collected (subjectively!) from the answers:

 - Coordinator
 - Builder
 - Writer
 - Reader
 - Handler
 - Container
 - Protocol
 - Target
 - Converter
 - Controller
 - View
 - Factory
 - Entity
 - Bucket
 

And a good tip for the road:

&gt; Don&#39;t get naming paralysis. Yes, names are very important but they&#39;re not important   enough to waste huge amounts of time on. If you can&#39;t think up a good name in 10 minutes, move on.

  [1]: http://www.bright-green.com/blog/2003_02_25/naming_java_classes_without_a.html
  [2]: https://stackoverflow.com/questions/1194403/what-names-do-you-find-yourself-prepending-appending-to-classes-regularly
  [3]: https://stackoverflow.com/questions/38019/whats-the-best-approach-to-naming-classes
  [4]: http://www.amazon.com/dp/0201633612/
  [5]: http://www.amazon.com/Patterns-Enterprise-Application-Architecture-Martin/dp/0321127420
  [6]: http://www.amazon.com/Implementation-Patterns-Kent-Beck/dp/0321413091

Naming Classes - How to avoid calling everything a &quot;&lt;WhatEver&gt;Manager&quot;?

According to [Sun][1] and [Msdn][2] it is a design pattern.

According to [Wikipedia][3] it is an architectural pattern

&gt; In comparison to design patterns, architectural patterns are larger in scale.
(Wikipedia - [Architectural pattern][4])

**Or it is an architectural pattern that also has a design pattern ?**

Which one is true ?


  [1]: http://java.sun.com/blueprints/patterns/MVC.html
  [2]: http://msdn.microsoft.com/en-us/library/ms978748.aspx
  [3]: http://en.wikipedia.org/wiki/Model–view–controller
  [4]: http://en.wikipedia.org/wiki/Architectural_pattern_(computer_science)

Content Type	Original Author	Original Content on Stackoverflow
Question	Niko Gamulin	View Question on Stackoverflow
Solution 1 - Android	Dimitar Dimitrov	View Answer on Stackoverflow

Android: how to create a background from pattern?

Android Problem Overview

Android Solutions

Solution 1 - Android

How to pass a variable into regex in jQuery/Javascript

How to clear $Error in PowerShell?

Attributions