Android :: Sending A Java Object From Phone To Computer
May 23, 2010
I was wondering what the simplest program for sending an object from my Android phone to my computer wirelessly (via LAN) would be. I have created Java RMI programs with a server and multiple clients, so I have a grasp of the concept. However with android I'm just not sure where to start.
What I am aiming to do is send some sort of information (could simply be text) to my computer and my computer will do an action. I have the GUI interface's and the actions to be carried out all worked out, just the sending of some sort of information is getting me.
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Sep 16, 2009
There's an app for this - Droid Messenger. Only their site is down, so can't try it. Is there an alternative app? I want to be able to send texts from my computer - through the web to my phone - then out to the recipient.
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Aug 17, 2010
So before i got the droid eris i could send picures from the computer to my verizon phone with vzw pics but now that i have the droid eris i cant do that. so does anyone know how to send pictures from the computer to the droid eris?
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Sep 21, 2010
I have no problem sending a file from my computer to my phone via bluetooth. However I cant seem to figure out how to send files from my phone to my computer. I tried using bluetooth file transfer from the app market but its not working.
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Feb 18, 2009
I am trying to get a FileInputStream object on an image that the user selects from the picture gallery.
This is the android URI returned by android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI content://media/external/images/media/3
When I try to construct a java URI object from this object, I get an IllegalArgumentException with the exception description Expected file scheme in URI: content://media/external/images/media/3 whereas the android URI shows the scheme as content
Never found a solution for the original question. But if you want the byte stream of an image in the pictures gallery, this piece of code will do that.
CODE:...................
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Nov 14, 2010
Prior to switching ROMs back and forth, I was able to nandroid off of my phone with no issue. Now, I cannot and at first I found it slightly alarming, but then I brushed it off. However, I feel like something might be wrong with my phone? Help?
Also, recently (as in today). My phone has been sending messages to other people, randomly. I got a phone call from my mother but it popped up as a totally different number.
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Aug 28, 2010
I'm attempting to make a simple homebrew game engine/framework in android. I have the "engine" as a library project that handles all of the graphics rendering, game activity, and whatnot. Essentially, the library project has a class GameMain which has a background image, an array of drawables, and a few functions (the most important is a run() function). The projects that use this library extend this class with their own unique run() function. The idea is that games that use the engine start with their own activity, launch the GameActivity from the library, and pass their unique GameMain child object into the library, which should run the unique run() method thanks to polymorphism.
Getting this to work, however, has been a struggle. I originally attempted to make the GameMain Serializable, which didn't appear to work. I'm now attempting to make it a Parcelable, but it does not appear to run the child objects run() function when called from the library. I'm wondering, are Parcelable objects actually capable of sending Object methods across activities? Am I going about this the wrong way, or am I just having some other weird bug I have not uncovered?
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Feb 12, 2010
Is is possible to send an object to an Android Service through an Intent without actually binding to the service? Or maybe another way for the Service to access Objects...
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Jan 5, 2010
I have tried to create a android application that sends a serialzed object from the phone to a servlet the contents of the object is the input from the user which i will store in a database using hibernate.
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Jan 9, 2010
I am creating an application which retrieves images from the web. In case the image cannot be retrieved another local image should be used.
While trying to execute the following lines:
CODE:................
The line if(drawable.equals(null)) throws an exception if drawable is null.
Does anyone know how should the value of drawable be checked in order not to throw an exception in case it is null and retrieve the local image (execute drawable = getRandomDrawable())?
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Jun 25, 2010
I'm writing some stuff in java and i ran into some problems lately. cut short, i need to compare an object i created to another instance of this very class i instantiazed before with different data.
looks like this:
CODE:........
with a class a:
CODE:..........
The problem is, that i end up finding out that the values from newA are always equal to those from oldA. so i guess sth went wrong with passing the references of the objects in the last line of the loop...i thought java always passes references of objects unless an explicit copy() is called? if this does matter: this code is running on android - don't know if the dalvik vm messes aroung with this...
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Apr 14, 2009
I have constructed a Bitmap object in Java. Can you please tell me how can I scale it (x, y with a different ratio) on android?
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Oct 9, 2010
So i am making a android app, and i want it to be so if i call lets say 911 it sends my GPS coordinents to a certain IP, i know everything but how i make it so if i call 911 it sends the info and how i can make it send the info to the IP via 3g,
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Dec 2, 2009
(Code is for Android Actually, I need code to be portable between Android and Java SE.)
I want to have a "settings" class with various game settings, like
public int map_size;
public String server_name;
etc.
The data needs to be accessed fairly frequently (so members, not a key-value map), and from time to time de/serialized in some standard way (mainly to send it through network).
I want to be able to
Serialize and deserialize the object into XML or JSON, without having to explicitly write the code for every member (but still having some degree of control over the format).
Define some (constant) meta-data about every member (default value, GUI name, XML identifier, ...), in a way that allows for easy modification in the source code (I want to be able to add a new meta-property, define a default value for it, and not have to specify it everywhere else).
1 is achievable by using reflection. I thought Java annotations for class members would be perfect for 2:
CODE:.............
But it looks like (user-defined) annotations don't work in Android yet - code using them crashes the compiler...
What would be the easiest way to store the meta-data about the settings (or another way to approach all this)?
Store information about settings in some external XML file? Store it in a Java data structure, with content defined in the code? Defining the data in this way somehow seems very unwieldy, especially compared to keyword arguments of annotations?
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Oct 29, 2010
From my android client i am sending a json to string object.but the .net client is getting it as empty string. here is my code...
is this header format correct?
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Jun 21, 2010
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?
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Jul 28, 2010
I have 2 String Operations I would need relevant in Object C // Get the newstring from mystring start at counter Java: newstring = mystring.substring(counter) OBJ-C: ? // Get the position from searchstring in mystring Java: startpos = mystring.indexOf(searchstring) ObJ-C: ?
I had two other questions and found now the solution (here als for others)
CODE:.................................
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Sep 29, 2010
I thought when you passed objects to methods in Java, they were supposed to be by value.
public class MyClass{
int mRows;
int mCols;
Tile mTiles[][]; //Custom class
//Constructor
public MyClass(Tile[][] tiles, int rows, int cols) {..........
At this point, any changes to the mTiles object are reflected back to the tiles object.
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Apr 19, 2010
I'm building an android application, which has a list view, and in the list view, a click listener, containing an onItemClick method. So I have something like this:
public class myList extends ListActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
getListView().setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
/* Do something*/
}
}
}
Normally, this works fine. However, many times I find myself needing too preform an application using the outer class as a context. thusfar, I've used: parent.getContext(); to do this, but I would like to know, is that a bad idea? I can't really call: because it's not really a subclass, just an embedded one. So is there any better way, or is that considered cosure? Also, if it is the right way, what should I do if the embedded method doesn't have a parameter to get the outside class?
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Mar 2, 2010
I'm writing an Android application. One problem is your app cannot contain a file whose uncompressed size is bigger than about 1Mb. I have a serialized object that I want to load that totals about 2Mb. My plan was to split this file into two smaller files, then load the object by combining both files at runtime.
However, I cannot work out how to use e.g. InputStream and ObjectInputStream to specify that I want to read the data from two input streams. How can I do this?
For example, say my object was split between file O1 and O2. How can I say "Load the object by reading the data from O1 then from O2"?
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Jun 22, 2010
So I ran into a problem today while working on my Android program. I have a class that turns that an XML string into a Java object (third party) and it works fine in as a regular java project but on Android I get this weird error:
CODE:.......
I hide my application name and my package for obvious reasons but I was wondering if anyone has ever encountered problems like this. Class is in the correct package, which is a library I have added. Other classes that I reference before are there and those can be made. Are there any other reasons a ClassNotFound Exception is thrown?
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Aug 25, 2010
In my Android client I want to receive JSON objects from a server. By googling I found a lot of different possibilities how to best parse the InputStream from the Server, but most of them wrote their own parser. Isn't there a library which does this parsing for me? Or how should I best implement it by myself?
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Apr 5, 2010
Is there any app (preferably free) that allows you to control an ERIS (android1.5)'s SMS client by sending messages from the computer while hooked up to the phone via cable. I'm just lazy and dont feel like picking up my phone half the time...
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Nov 11, 2012
I am creating an Android application. This application should send message to computer via internet and Wifi (check whether if the device is using internet). The main function is by pressing on a button in Android device a message should go to computer via internet (I don't know, but I think it should be with UDP). I know that I need to set the server for computer and write down IP and port to the android app code. I don't have any clue how to do it. I kinda need to create a computer (windows 7) server receiver, which would receive messages. I am using Eclipse Android SDK
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Sep 23, 2009
I have a Tomcat Server in front of a Servlet that gets/stores information in a MySQL Database. My Android application needs to get/ put information on to this server. I control both ends of the communication, so I've basically been exploring the "best" way to send information back and forth. So far, I've tried Jackson for JSON and the native Java Serialization packages. My object is relatively complex and completely serializable.I have no desire to write a "custom" guy at all, as I doubt I'd actually be able to improve on most of the packages.So with that being said, are there any other strategies/packages I should try to get information to/from my server?
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Apr 6, 2010
I followed this stackoverflow thread to implement EmailSender using Javamail on Android. But I am still getting this exception: Could not connect to SMTP host: smtp.gmail.com, port: 465. I am using Android 1.6.
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Aug 27, 2010
I had write one application in that I am reading a image and sending it to the server, I am using Base64OutputStream class. I had tried it in core java and image is encoded successfully, But when I am using same logic in android then I am getting error as java.lang.VerifyError. And Logcat gives following error as............
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Mar 16, 2010
I want to transfer my instant video streaming from my android phone to my computer using java. I have to watch it on my computer as instantly.
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Sep 9, 2009
I want to do some automated testcase with Instrumentation . Suggest that my AUT has 2 Activity. After clicking the button in ther first Activity, the second one will be shown with new content base on what we enter in the first Activity.) Instrumentation provides us the function called startActivitySync() and return the Activity object for processing. My question is how we can get the pointer of the second Activity after the it is shown by clicking the button on the first activity.?
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Jun 8, 2009
I would like to convert a Picture object to Bitmap object in memory, without writing data to disk.
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