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How to get the inner tags from an XML file?

I'm sitting there for quite a while now, trying to process my xml file (similar to the one below). I want to check all tags, if is equal to a variable, and if so, then running readEntry() on the tag.
I followed this example: https://developer.android.com/training/basics/network-ops/xml.html
I also found this Article(Difficulty with XML nested tags with XMLPullParser in Android deals with this topic.
I have already tried a few things but get either nothing or XmlPullParserException.
A Example of my XML:
<VpMobil>
<Kopf>
...
</Kopf>
<FreieTage>
...
</FreieTage>
<Klassen>
<Kl>
<Kurz>5</Kurz>
<Pl>
<Std>
<St>1</St>
<Fa>Fa1</Fa>
<Le>NAME</Le>
<Ra>1009</Ra>
<Nr>131</Nr>
<If/>
</Std>
<Std>
<St>2</St>
<Fa>Fa2</Fa>
<Le>NAME</Le>
<Ra>1004</Ra>
<Nr>132</Nr>
<If/>
</Std>
</Pl>
</Kl>
<Kl>
<Kurz>6</Kurz>
<Pl>
<Std>
<St>1</St>
<Fa>Fa2</Fa>
<Le>NAME</Le>
<Ra>1046</Ra>
<Nr>131</Nr>
<If/>
</Std>
<Std>
<St>2</St>
<Fa>Fa3</Fa>
<Le>NAME</Le>
<Ra>1012</Ra>
<Nr>132</Nr>
<If/>
</Std>
</Pl>
</Kl>
</Klassen>
</VpMobil>
I would be very grateful if someone could explain to me how I can achieve this. Thanks in advance

You can use Jackson library to parse XML, it is as easy as parsing Json File. this tuto will help you to figure out.
However, bescause it is is a nested xml, you will need some nested POJOs to achieve parsing.

After a few more unsuccessful attempts, I got the idea to convert the XML into a JSON (Convert XML to JSON object in Android) and continue working with it. That worked then.

Benefit of Declaring String as Resource in strings.xml file

I have read in many places that you should declare your String objects in your resource file but I haven't read about any benefits anywhere.
I have already declared all my Strings that I have in my layouts as resources but I haven't done so in my classes.
My question is:
What are the benefits of declaring Strings as a resource? Are there any memory benefits?

Internationalisation,
Keeping all of your strings in a single place (where they can be editted globally),
Changing strings based on device (mdpi/large/portrait)... I mean, it'd be really rare for this
last one, but it's possible.
Sharing the same string among many layouts (this will happen in any app which isn't tiny)

The top one I reckon is: Translations! Put a new strings.xml in the right folder and the app translates itself for each device.
But there's a matter of organisation too. Just like the layout, you normally don't build in the code, because that's not the place for it.
The code is to process stuff. The string is just one more of the resources that your code will use to show stuff on the screen.

One of the main benefits is for localization: you keep your code language-independent and just need to provide a different XML file for each language you want to support.

Android - Getting data from XML file on the web

I need to get data from an XML file in Android. On the iPhone environment, my code is:
NSURL *thisURL = [[NSURL alloc] initWithString:#"http://www.xxx.com/file.xml"];
NSArray *myArray = [[NSArray alloc] initWithContentsOfURL:providerURL];
myArray is now an array of dictionary items initialized with contents from file.xml.
Is there any way to do this in Android? Can someone point me to doc or sample code?
I'm new to the Android environment and just need some direction.
Thanks,
Kevin

See Working with XML in Android for a variety of methods for dealing with XML. Which method to use depends on how big your XML is, and what you want to do with it. '
I'm not sure how it makes any sense to turn XML into an array, so no, none of the methods do that. If you want something similar to that, use Json instead of XML.

After a bit of research, it appears to me that using the Simple XML Serialization framework is going to be my best bet, especially since I do have a relatively simple XML file to read. The result will be a 'list' class with several 'entry' classes which seems like a viable way to handle this...probably better than having an array of classes as was done in the iPhone app.

Getting values from XML in Android (API Level 3)

I have a string that contains a xml structure and there are two pieces of data in separate tags that I am after.
xpath has been added since API level 8, and with me being stuck with API level 3 (old phone for you ;-)) I need a way to get the data.
Would using a regular expression commit a huge sin? ;-) The xml isn't that big...
Looking for some guidance on what to.
Many thanks!

It might help if you added the XML and what you were hoping to achieve with it, but you should be able to parse the XML string using DocumentBuilder, this will return a Document and with that you should be able to call getElementsByTagName()

Should keys be placed on a xml to be accessed with R.string.key?

I usually place my keys on an xml and access them with R.string.key_name but someone make me notice that I could have inline strings in the code.
I feel that I might use that key in different places and if I change its name I would just rename in the xml but perhaps that doesn't make too much sense with keys.
What do you think?

Your question conflates two different questions:
Does it make sense to have a single definition of your key?
Does it make sense for this single definition to be within an XML file?
The answer to point 1 is clearly "yes". Duplicating strings used as keys (which need to be the same everywhere for your code to function correctly) is a recipe for pain and heartache.
But what benefit does putting the key in an XML file give you? You're just adding "noise" to your code, and ensuring that whoever reads it has to find, understand and look in at least one additional file.
public static final is the way to go.

Inline literal strings will be a massive pain to change if they get scattered through the code. Localizing them in one place with either the strings.xml or a defining a public final static variable will probably save you a headache later.