Use just &quot;array&quot; instead of &quot;integer-array&quot;. See [Typed Array][1] in the developer guide.


  [1]: http://developer.android.com/guide/topics/resources/more-resources.html#TypedArray

See [XML integer array, resource references, getIntArray][1]

    TypedArray ar = context.getResources().obtainTypedArray(R.array.my_array);
    int len = ar.length();
    int[] resIds = new int[len];
    for (int i = 0; i &lt; len; i++)
        resIds[i] = ar.getResourceId(i, 0);
    ar.recycle();
    // Do stuff with resolved reference array, resIds[]...
    for (int i = 0; i &lt; len; i++)
        Log.v (TAG, &quot;Res Id &quot; + i + &quot; is &quot; + Integer.toHexString(resIds[i]));


  [1]: http://www.anddev.org/xml_integer_array_resource_references_getintarray-t9268.html

Make a [LevelListDrawable][1]. Although it is not exactly what you want, but pretty much achievable. 


  [1]: http://developer.android.com/guide/topics/resources/drawable-resource.html#LevelList

I think it&#39;s best to keep them in code.

```
private static final int[] AVATARS = new int[]{
            R.drawable.ava_1, R.drawable.ava_2, R.drawable.ava_3...};
```

I have a question about formatting the Rupee currency (Indian Rupee - INR).

Typically a value like `450500` is formatted and shown as `450,500`. In India, the same value is displayed as `4,50,500`

For example, numbers here are represented as:

    1
    10
    100
    1,000
    10,000
    1,00,000
    10,00,000
    1,00,00,000
    10,00,00,000

Refer [Indian Numbering System][1]

The separators are after two digits, except for the last set, which is in thousands.

I&#39;ve searched on the internet and people have asked to use the locale `en_GB` or pattern `#,##,##,##,##0.00`

I tried this on JSTL by using the following tag:

    &lt;fmt:formatNumber value=&quot;${product.price}&quot; type=&quot;currency&quot; 
      pattern=&quot;#,##,##,##,###.00&quot;/&gt;

But this does not seem to solve the issue.

  [1]: http://en.wikipedia.org/wiki/Indian_numbering_system

Displaying Currency in Indian Numbering Format

I have a web application where I&#39;m specifying an input field to be a number using the HTML5 property type=&quot;number&quot;.

    &lt;input type=&quot;number&quot; value=&quot;123456&quot; /&gt;

By specifying the type, Chrome automatically formats the value to include a comma (123,456). In other browsers it does not format the number, but it also does not prevent non-numeric characters. 

In this case, I don&#39;t want the comma to be added. Is there any way to turn off localized formatting?

Chrome auto formats input=number

I have some images in my `res/drawable` folder. Let&#39;s say `img1.png`,
`img2.png` and `img3.png`. I am currently creating an integer array of these image IDs in Java like this

    int[] imgIds = {R.drawable.img1, R.drawable.img2, R.drawable.img3};

Instead, is it possible to create an integer array in one of `res/values` files (say `strings.xml`) like this

    &lt;integer-array name=&quot;img_id_arr&quot;&gt;
        &lt;item&gt;@drawable/img1&lt;/item&gt;
        &lt;item&gt;@drawable/img2&lt;/item&gt;
        &lt;item&gt;@drawable/img3&lt;/item&gt;
    &lt;/integer-array&gt;

and then access it in Java via `getResources().getIntArray(R.array.img_id_arr)`?

Creating integer array of resource IDs

I have some images in my <code>res/drawable</code> folder. Let's say <code>img1.png</code>,
<code>img2.png</code> and <code>img3.png</code>. I am currently creating an integer array of these image IDs in Java like this
<pre><code class="hljs language-ini">int[] imgIds = {R.drawable.img1, R.drawable.img2, R.drawable.img3};
</code></pre>
Instead, is it possible to create an integer array in one of <code>res/values</code> files (say <code>strings.xml</code>) like this
<pre><code class="hljs language-php-template">&#x3C;integer-array name="img_id_arr">
 &#x3C;item>@drawable/img1&#x3C;/item>
 &#x3C;item>@drawable/img2&#x3C;/item>
 &#x3C;item>@drawable/img3&#x3C;/item>
&#x3C;/integer-array>
</code></pre>
and then access it in Java via <code>getResources().getIntArray(R.array.img_id_arr)</code>?

Does anyone know if the heap size on Android phones is a constant value according to what is set in the OS version or if this is a setting which the phone producers can decide on?

Is the heap size proportional to the amount of RAM on the phone?

I&#39;ve only found articles where people say that the heap size of an application is 16M. However, these articles are a bit old. From what I see, as an example, heap sizes vary from around 20M up to 24M on one specific model. This phone has 768M of RAM.



Android heap size on different phones/devices and OS versions

How can I set an icon for my Android application?


Set icon for Android application

I need to find out if any view is focused inside an Activity and what view it is. How to do this?

How to find out which view is focused?

I have a few ImageViews inside a LinearLayout.  I need to scale down the ImageViews so that they maintain their aspect ratios whilst fitting inside the LinearLayout vertically.  Horizontally, I just need them to be adjacent to each other.

I&#39;ve made a simplified test bed for this which nests weighted Layouts so that I have a wide, but not very tall, LinearLayout for the ImageViews -


    &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:orientation=&quot;vertical&quot; android:layout_width=&quot;fill_parent&quot; android:layout_height=&quot;fill_parent&quot;&gt;
        &lt;LinearLayout android:id=&quot;@+id/linearLayout1&quot; android:layout_width=&quot;fill_parent&quot; android:layout_height=&quot;fill_parent&quot; android:layout_weight=&quot;5&quot;&gt;
            &lt;LinearLayout android:id=&quot;@+id/linearLayout3&quot; android:layout_height=&quot;fill_parent&quot; android:layout_width=&quot;fill_parent&quot; android:layout_weight=&quot;1&quot;&gt;
                &lt;ImageView android:id=&quot;@+id/imageView1&quot; android:layout_height=&quot;wrap_content&quot; android:layout_width=&quot;wrap_content&quot; android:src=&quot;@drawable/test_image&quot; android:scaleType=&quot;fitStart&quot;&gt;&lt;/ImageView&gt;
                &lt;ImageView android:id=&quot;@+id/imageView2&quot; android:layout_height=&quot;wrap_content&quot; android:layout_width=&quot;wrap_content&quot; android:src=&quot;@drawable/test_image&quot; android:scaleType=&quot;fitStart&quot;&gt;&lt;/ImageView&gt;
            &lt;/LinearLayout&gt;
            &lt;LinearLayout android:id=&quot;@+id/linearLayout4&quot; android:layout_height=&quot;fill_parent&quot; android:layout_width=&quot;fill_parent&quot; android:layout_weight=&quot;1&quot;&gt;&lt;/LinearLayout&gt;
        &lt;/LinearLayout&gt;
        &lt;LinearLayout android:id=&quot;@+id/linearLayout2&quot; android:layout_width=&quot;fill_parent&quot; android:layout_height=&quot;fill_parent&quot; android:layout_weight=&quot;1&quot;&gt;&lt;/LinearLayout&gt;
    &lt;/LinearLayout&gt;

(In the Eclipse layout editor the images are clipped vertically and not scaled at all - but that&#39;s just one of those idiosyncrasies that we learn to love)

When run on hardware the images are scaled to the correct height whilst preserving their aspect ratio.  My problem is that they are not next to each other.  The height of each ImageView correctly matches the height of the LinearLayout.  The width of each ImageView is the width of the unscaled image - the actual scaled down images appearing at the left side of their ImageViews.  Because of this, I&#39;m getting a large gap between the images.

Ideally I would like to manage this through XML though, if this is not possible, I understand that using a custom view may be the best solution.

I tried creating an IconView (extends ImageView) class which overrides onMeasure so that I could create image views of the necessary size by scaling the width depending on the height.  But the parentWidth and parentHeight being passed into the function were the dimensions of the screen and not of the LinearLayout container.

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
      int parentWidth = MeasureSpec.getSize(widthMeasureSpec);
      int parentHeight = MeasureSpec.getSize(heightMeasureSpec);
      // Calculations followed by calls to setMeasuredDimension, setLayoutParams
      super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }

So my questions are -

1) Can I amend the XML in some way to make it do what I need?

2) How do I make my custom class get the height of the LinearLayout so that I can calculate the necessary width for the custom images?

Thanks if you&#39;ve managed to read this far.  Even more thanks if you can point me in the direction of a solution!





Android ImageView size not scaling with source image

I&#39;m trying to write an app that helps you manage your finances.  I&#39;m using an `EditText` Field where the user can specify an amount of money.

I set the `inputType` to `numberDecimal` which works fine, except that this allows people to enter numbers such as `123.122` which is not perfect for money.

Is there a way to limit the number of characters after the decimal point to two?

Limit Decimal Places in Android EditText

I am new to Java and for the time created an array of objects in Java. 

I have a class A for example - 

    A[] arr = new A[4];

But this is only creating pointers (references) to `A` and not 4 objects. Is this correct? I see that when I try to access functions/variables in the objects created I get a null pointer exception.
To be able to manipulate/access the objects I had to do this:

    A[] arr = new A[4];
    for (int i = 0; i &lt; 4; i++) {
        arr[i] = new A();
    }

Is this correct or am I doing something wrong? If this is correct its really odd.

EDIT: I find this odd because in C++ you just say new `A[4]` and it creates the four objects.

Creating an array of objects in Java

The below first logs `0`, and then logs `1`. How do I store a *copy* of the object, rather than a *reference* to it?

	debug.log(vi.details.segment);
	vi.nextSegment = vi.details;
	vi.nextSegment.segment++;
	debug.log(vi.details.segment);

Cloning an object in JavaScript

To check what `@some_var` is, I am doing a

    if @some_var.class.to_s == &#39;Hash&#39; 

I am sure there is a more elegant way to check if `@some_var` is a `Hash` or an `Array`.

What is a elegant way in Ruby to tell if a variable is a Hash or an Array?

I&#39;m working in the android environment and have tried the following code, but it doesn&#39;t seem to be working.

    String [] stockArr = (String[]) stock_list.toArray();

If I define as follows:

    String [] stockArr = {&quot;hello&quot;, &quot;world&quot;};

it works. Is there something that I&#39;m missing?


Convert ArrayList&lt;String&gt; to String[] array

```php
//go through each question
foreach($file_data as $value) {
   //separate the string by pipes and place in variables
   list($category, $question) = explode(&#39;|&#39;, $value);

   //place in assoc array
   $data = array($category =&gt; $question);
   print_r($data);

}
```

This is not working as it replaces the value of data. How can I have it add an associative value each loop though? `$file_data` is an array of data that has a dynamic size.

Adding an item to an associative array

It doesn&#39;t seem like it&#39;s possible to add a new line `/n` to an XML resource string. Is there another way of doing this?


String Resource new line /n not possible?

I&#39;m trying to create a raw folder for my android app which will hold different media files for use later. But I can&#39;t seem to be able to reference the created raw folder in my .java classes. 

For example: R.? -&gt; This returns a list of all possible resources I can use like the basic drawable, layout and values folder. However it won&#39;t display the raw folder. 

Is it correct to say that raw is created as a general folder and nothing else? Or does it have to be declared in the AndroidManifest.xml file in order to be recognised as a resource?

Android Raw folders - creation and reference

I want to remove all unused layouts, strings, drawables, colors, etc from my Android res directory. Are there any tools that will give me a list of files and I can remove from my repository and elements within specifics files (e.g. unused string entries) that are no longer used?


Remove all unused resources from an android project

It is magical for Android to locate the proper resource just through the ***R.id.XXX***. 

AFAIK, the resources are compiled to binary format, so how does this mapping logic work under the hood?


**Maybe** it works like this:

For e.g., in the **layout1.xml**, we got:

    &lt;Button android:id=&quot;@+id/button1&quot; &gt;

and AAPT will generate this in the R.java:

    public static final int button1=0x7f05000b;



When the ***.apk** is genrated, the **@+id/button1** with be substituded with &quot;0x7f05000b&quot;.

Thus, when we call:

    findViewById(R.id.button1);

we are essentially still do the search based on the ID, though the ID is a number like 0x7f05000b.

Thanks!


ADD
---

**What I really want to know, is how the resource id integer is parsed into the resource content? In other words, how does the Android runtime locate the resource content with resource id as the sole clue?**

For example, how is a drawable picture found with a resource id? Or how is a string value is found with a resource id?

How does the mapping between android resources and resources ID work?

I would like to store drawable resources&#39; ID in the form of `R.drawable.*` inside an array using an XML values file, and then retrieve the array in my activity.

Any ideas of how to achieve this?

Content Type	Original Author	Original Content on Stackoverflow
Question	android_stricken	View Question on Stackoverflow
Solution 1 - Android	resnbl	View Answer on Stackoverflow
Solution 2 - Android	Joe Bowbeer	View Answer on Stackoverflow
Solution 3 - Android	xandy	View Answer on Stackoverflow
Solution 4 - Android	android developer	View Answer on Stackoverflow

Creating integer array of resource IDs

Android Problem Overview

Android Solutions

Solution 1 - Android

Solution 2 - Android

Solution 3 - Android

Solution 4 - Android

Chrome auto formats input=number

Displaying Currency in Indian Numbering Format

Attributions