Android : Way To Convert Objects To XML / Vice Versa?
Oct 5, 2010
I created a xsd and I created Java objects using Castor. Then I imported this in my Android project and tried to build an XML from the object, using the marshal method. Marshaller.marshal(v, writer); I received some wired exception trouble processing "javax/xml/parsers/DocumentBuilder.class":... So my question is Can I use Castor inside Android, If yes how can I work around this. If no, what is the neat solution available to convert object to xml and xml to object in Android, similar to Castor.
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Oct 8, 2009
I have to convert a byte array to string in Android, but my byte array contains negative values. If I convert that string again to byte array, values I am getting are different from original byte array values. What can I do to get proper conversion?
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Oct 4, 2010
I have some back end web services, SOAP web services. I would like to create an android client to use these. I'm under the impression that SOAP style web services are non trivial to setup on android, and I would prefer to use REST if possible Is there any utility that can convert REST calls to SOAP and back again? Or will I need to create my own application that listens for REST calls, makes the appropriate SOAP calls, then sends the response back as REST?
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Sep 15, 2010
Can we use j2me packages in android development? I just mean to say like for eg: sax parser is supported in both the platforms. So can we code the business logic in j2me platform and use that class in android platforms and vice-versa?
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Nov 15, 2010
I know, that I get the same result with both code snippets
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May 5, 2014
How do I export or import mobile bookmarks from a browser (i.e. Chrome, Firefox, etc) to my PC and vice versa.
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Jan 10, 2010
wheres the option or the settings screen to choose either IMAP or POP
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Dec 16, 2009
Does Android keep the connection between the server/socket when it moves from EDGE to WIFI and vice versa?
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Jul 14, 2010
Does anyone know how you send your photos from your Droid Eris phone TO the vzwpix.com (pixplace) or vice versa? It was pretty straightforward on my old Dare, but now the options to send there aren't as apparent.
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Apr 30, 2010
On Windows 7 laptop. Htc sync is installed, but so far out of about 30 tries i have only managed to connect the phone once. I'm hoping to root my phone, but am not gonna have any luck if they can't bloody see each other!
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Oct 26, 2010
The FAQ mentions a method of passing objects around activities. (It is not clear to me): "A HashMap of WeakReferences to Objects. You can also use a HashMap of WeakReferences to Objects with Long keys. When an activity wants to pass an object to another activity, it simply puts the object in the map and sends the key (which is a unique Long based on a counter or time stamp) to the recipient activity via intent extras. The recipient activity retrieves the object using this key.".................
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Jun 15, 2010
I have an application that have a Google map on Google Android 1.5 since we have been working on the application for a long time, we are not in stage of upgrading to the newest framework, so we are using 1.5. Now, I have map locations that are dynamically generated and drawn on the map at run-time to visualize some streams, Up to this point the application is working fine, Now my problem is that I am trying to filter the objects ( addresses) to visualize only the on-screen ones. I do NOT want to visualize the addresses that are off-screen. The way I am trying to do this is to check the screen-coordinates of each object (address) before visualizing it, then it the coordinates (x,y) more than (0,0) and less than (320, 460). I should visualize it. I am trying to use this approach, but it is not working for some reasons, I have tried many posts but could not understand why, there must be something missing somewhere that I am not aware of.
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Jun 29, 2010
I know the INC has stated this is one of its features, does the Droid X also have it? I have an INC on order, but am switching over to a Droid X ( confirmed no re-stocking fee btw on INC-DX ) ASAP. I've just been checking out everything the INC has comparing it to the DX and didn't know if speech to text was part of the UI Sense or Android itself, coming from a RIM customer this is all greek to me - so far
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Dec 16, 2012
How to reduce the ridiculous battery drain caused by playing this game on my Galaxy S3? It literally kills my phone in 90 minutes.
GT-I9300
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Sep 8, 2010
I am new to Android development. I want to know how you all manage objects. For eg we make object as A a = new A(); and then manage that object. But, here, we call A.class; My concern is that i don't want to call on Create(),nor do i want to push UI screen I just want to make 1 static object for 1 screen;and want to manage it throughout my application. that is, instead of calling A.class; can i call A a = new A(),and manage that object without pushing,and whenever i need i push that screen. Is there someway?
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Nov 12, 2010
Is there a way to pass an Array List of objects between activities? The myObject implements Parcelable and I'm able to successfully pass the objects around individually, but that means I need to have an exact amount of "myObjects" coded. I want this to dynamically grow/shrink by what the user does with the app. I have seen some posts on the web about doing:
Activity A
ArrayList<myObject> myObjArray = new ArrayList<myObject>();
Then when passing this into the intent I would use:
intent.putParcelableArrayListExtra("myObjArray", myObjArray);
Activity B
ArrayList<myObject> myObjArray = new ArrayList<myObject>();
Bundle extras = getIntent().getExtras(); myObjArray = extras.getParcelableArray("myObjArray");
However, the myObjArray always gets filled with "null". How can I achieve this?
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Aug 30, 2010
I want to pass an object from Activity B to Activity A. Scenario:
- Activity A calls Activity B
- User selects item in Activity B
- Activity B passes an object to Activity A
How do I accomplish this? And in which method do I read in the passed object in Activity A?
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Aug 7, 2009
I am new to this android stuff and SQLlite etc.I am going to log some numbers at a certain interval, and will put them into a dynamic histogram, by dynamic i mean that there will be a maximum number of samples in the histogram, the histogram and age stuff should be persisted either in db or plain file.For simplicity, I would like the samples to be stored in a blob type datafield, but i cannot se if this is possible. Alternative i could have another table with the samples Or I could simply have files with filename = name and content = samples.my concern might be unclear by now, but put simply, what is most effecient regarding power usage?
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Mar 31, 2010
I have an array of 5 Timer objects in my app, some of wich have been scheduled with a TimerTask. I need to be able to store and load these 5 Timers; is there a way to save Objects? Maybe storing the address of the array would be enough? How could I do that?
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Oct 20, 2009
I have been able to draw a map using 'MapActivity' class. Am unable to render 3D graphics on the Map. Is there any way to draw something on the foreground with the Map as the background?
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Mar 19, 2009
Is there any way for an Android application to retrieve some sort of Collection object that contains references to all of the GUI elements which are currently on the phone's screen? This could be very useful for testing purposes and so on. If I have overlooked a well-known class or library, please let me know.
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Nov 18, 2009
I have a class like class My data{ String name; int data; Location[] locality.
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May 31, 2009
I am writing a game using OPENGL, there are several 3D objects in my surface view. My question is: Should each 3D object implement view in order to get touch events? Or there is other way to do this?
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Jul 22, 2010
I have a game object that I save like this in OnPause()try {final ObjectOutputStream os = new ObjectOutputStream(openFileOutput(gameName + ".sav", 0)); os.writeObject(gameObject); os.reset();} catch (final Exception e) {e.printStackTrace();This works fine except on some of the older or slower phones it can sometimes take too long to complete. I end up getting a ANR (Activity Not Responding) error. I would like to move this to a thread to prevent blocking the UI. However when I try this I run into multiple problems.First openFileOutput is only available in my activity. I worked around this by passing the ObjectOutputStream to the thread. After that I could save the object but later when I tried to reload I get a java.io.EOF Exeception. does anyone have a good pattern for writing objects to a file from a thread?
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Nov 22, 2010
I need to pass a reference to the class that does the majority of my processing through a bundle. The problem is it has nothing to do with intents or contexts and has a large amount of non-primitive objects. How do I package the class into a parcelable/serializable and pass it to a startActivityForResult?
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Aug 19, 2010
I am trying to add an object to an arraylist but when I view the results of the array list, it keeps adding the same object over and over to the arraylist. I was wondering what the correct way to implement this would be.
CODE:..............
I have double checked my JSONArray data and made sure they are not duplicates. It seems to keep adding the first object over and over.
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Oct 27, 2010
I am trying to design an activity in Android which consist in a ListView with a button to add items to the List.
When the button is clicked, it opens a chain of Dialogs to configure the new item (each Dialog configures one attribute of the item Object). When the last Dialog is validated, the item is added to the list.
I was thinking of creating a new item Object when the first Dialog opens and using a setXXX() method on each Dialog validation to configure the object, but how am I supposed to pass the object from one Dialog to another?
I got it working using final objects, but it doesn't look clean to me at all. Plus I would have liked to use the activity Dialog manager methods such as onCreateDialog() and showDialog() to manage the Dialogs.
What is the cleanest way to do this?
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Feb 4, 2010
I have created an hprof file by inserting the statement Debug.dumpHprofData("/sdcard/myapp.hprof"); in my app's code; I have then run the hprof file through hprof-conv and opened the converted file in Eclipse.
Following the advice of the MAT "Cheat Sheet" I have obtained an analysis of my app's memory usage by going to "Leak Identification -> Component Report" entering "com.prepbgg.*" and hitting Finish.
I know that my app is consuming large amounts of memory: in particular at the stage where I called dumpHprofData it had a one megapixel bitmap object and a canvas that must have consumes several hundred KB. (I also suspect that it is leaking significant amounts of memory because performance degrades severely after the screen has been rotated a few times.)
However, the Component Report for com.prepbgg.* shows total memory of only 38.7KB. The Histogram view shows for android.graphics.Bitmap (presumably this is the total of all apps including mine) 404 objects and Shallow Heap 12,928. Is that 12,928 bytes?
Clearly, my app consumes more than 38.7KB and the Bitmap far more than 12,928 bytes. Where am I going wrong? How can I see the total memory consumed by my app?
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Mar 24, 2009
was wondering about the behavior of Bundles and serializable objects. If I put a serializable object into a bundle, what is serialized then, the reference to the object or the object itself? I always assumed that the object itself would be serialized to a byte stream when calling putExtra() and re-created from that representation when calling getSerializableExtra(), but I recently stumbled upon a piece of code that put an entire view into a Bundle in thread A, retrieved it from that bundle in thread B, performed a modification on it and this modification actually became visible. This can only happen if the reference to that view was stored, not the view itself, right? Otherwise, the modification had been applied to a copy of that view and would be meaningless.
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Oct 18, 2009
I am trying to pass a user defined object to another activity Bundle bundle = new Bundle(); bund.putSerializable("myData", myData); intent.putExtra("bundle", bundle); where myData class implements Serializable interface. I am getting following error: java.lang.RuntimeException: Parcelable encountered IOException writing serializable object how to pass complex objects between activities?
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