I want to build a data structure in my application to store many entries indexed by keys. Each entry has several parameters to retrieve and update.
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I have some reference data in a text file (~5MB) that I want to use with might android application.The file is of the format:
1|a|This is line 1a
1|b|This is line 1b
2|a|This is line 2a
2|b|This is line 2b
2|c|This is line 2c
What I want to know is the most efficient way (less memory, fast, size etc.) to use this file within my application.
a.) Should I save the file as a raw resource and open and read the whole file whenever I need a certain line.
b.) Should I convert the file to XML and use XPath to query the file when ever I need to look up a value
<!--sample XML -->
<data>
<line number="1">
<entry name="a">This is line 1 a</entry>
</line>
</data>
c.) Should I just copy & paste the whole file as a static string array in the application and use that.
[EDIT] I will also need to search this file and jump to arbitrary keywords e.g. "line 1a".
I have created a class with 3 sub classes in Java. The 3 sub classes contain variables to store information from my XML document. I am able to store in the first two for there are only single instances of the data in the XML. The third class contains variables that repeat multiple times. I want to store an object of "third class" objects. I also have a SAX parser class. I am doing this within an Android environment (1.6).
Does this make enough sense without displaying any code?
In my application, I am going to create a few listviews that are dependent on the listview before it. For example,Then, depending on user choice, will go next screen, let's say, it contains a submenu of each type of school,that may be different or may be the same to other states.What I want to know, is how to populate these different lists dynamically as the user goes on? I don't know what the best of doing this is, and I seem to be looking in the all the wrong places because I keep getting stuck. Once all the data is added into whatever structure is used, it will be static. I basically just need help as to how to code information into some sort of hashtable or anything of the sort that can be easily referenced, and later when the Application is updated, be able to add more schools/states/submenus etc.
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2. Store all images in single xml. Concern here is XML will be too big and takes time to parse.
For my CS bachelors I am doing a Senior project using android and google maps.My vision was to do a (relatively) simple Dijkstra shortest path using google maps road data. I was going to add elevation change along with 2D distance. I am doing well playing with maps in android but I am completely stumped trying to access google maps data in any sort of searchable form.How would I go about accessing the data for say intersections of roads (lat/long) in a particular area?There has to be a way to pull that data in some sort of tree form. It seems like it may be possible with kml?Any pointers would be awesome.I want my paths to follow roads but If i cant this is going to turn into an orienteering application fairly fast.
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View 2 Replies View RelatedI'm designing a custom view which is an X/Y Plot. It's a moving graph that scrolls to the left with time and new Y values are continuously coming in at 10 per second.
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Any other ideas out there?
Does anybody know what data structures are used to the store messages in an SMS client app, and whether there is an existing API for this.I was perhaps looking at implementing a link list for the purpose but if the work has already been done in an API then perhaps it would be unnecessary to commit time to the task that could be spent programming other parts.
View 2 Replies View RelatedI wish to display data in the the arraylist in a list view. The arraylist is not a generic list but a object defined by me. I want to display only certain data of the object. Something like, an object of a student, I want to display the student's name only, the student id and the student dob is not required.
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View 1 Replies View RelatedWhen start the activity i will set the activity object to the Application, and i will registry it in the Appication app = MyApplication.getApplication(this);
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2. Activity A -> Activity B
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4. Finish B activity
5. but the Activity B object not null in the Application
I want a application level object in Android.Here is the scenario... Suppose I want to pass a object from Activity A to Activity B then to Activity C D......... Then I will have to pass that object from Activity A to B then to C then to D....... Passing the Parcel Through the Bundle. Is there a Object in Android which can be accessed by all the Activities and its lifetime is same as the lifetime of the application.
View 2 Replies View Relatedit's possible to use BufferedImage object in android application.
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View 7 Replies View RelatedI am developing an android application at the moment, and i'm facing a problem that i have no idea how to solve. My application communicates with a Tomcat Server, and i'm using ObjectOutputStream to send a Document object to my application from my servlet. There fore, i'm importing org.w3c.dom to my project. The problem i'm facing is, that I can't read the Document object with ObjectInputStream on my android device. I'm getting the following exception.
CODE:..................
I can send and recieve any object i want without any problem, but when I try to send an object refered to the com.w3c.dom package I get this exception.
Kindly give me the way to create a 3D object in android application
View 1 Replies View RelatedI am wondering what is the kind of object that shows up when in the Contact application, you hit search option, what is it ? a Custom Quick Search Bar, a custom notificaction bar, other idea ...
An image of what I am talking about is available here code...
I am writing an application that needs to store keys that will be compared against later. How can I do this securely? I have looked into using a SQLite database, but this doesn't seem to be secure at all...any thoughts?
View 2 Replies View RelatedI write app that hold route information (array of GeoPoint ) for every race.At the end of each race I want to save information about race. They may have 100-200 GeoPoints (70.22222, -20 33333), each race.Example for one race:
70.22212, -20 33253
70.25222, -20 33463
70.26232, -20 33573
70.27242, -20 33683
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View 10 Replies View RelatedI need to store data securely. So can some one tell me what should be the best way to store it on device. Is there something like registory in android.
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