Android :: Does The Dalvik File Format - .dx - Support More Instructions Than Java .class File
Apr 17, 2010
Is there anything the Dalvik VM supports (in terms of bytecode) which is not used currently because the .class files don't have it?
As an example, if people would write their own Source-to-DX converter for their functional language XYZ, would they be able to implement e. g. full tail calls although the .class file does support tail calls only under certain circumstances?
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Jul 20, 2010
I have a small test Android Project used to test the MediaPlayer class.
For this project, usually after a few builds, the compiler gives this exception:
Conversion to Dalvik format failed with error 1
I've narrowed this down to Google Chrome locking the generated .apk file (in /bin). So, the build is unable to remove that APK to rebuild.
Sure enough, quitting Chrome, solves the issue.
This is bizarre, isn't it! Why would Google Chrome be grabbing a lock on that file?
I have never had this error with any of my other projects.
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May 19, 2010
i have two files
App.java
Gallery.java
App. java contains frontend buttons and functionalities Gallery.java lists the imagesin the sd card. i want to call Gallery.java in click event in app.java
App.java
package gallery.display;
import android.app.Activity;
import android.os.Bundle;
import android.view.View.OnClickListener;
import android.view.View;...........
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Nov 3, 2010
i hav two classes...both classes are extends activity.. i need call other class method on main class on android development..its urgent..please.. i done something like subclass sub = new subclass()...its not work..
In 1st activity class
package org.me.intent_testing;
import android.app.Activity; import android.os.Bundle; import android.widget.; import android.view.; import android.content.Intent;
/** * * @author pavankumar */
public class FirstActivity extends Activity {................
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Mar 29, 2010
I am working on a light weight Java client library for Android mobile platform that can read and write to Excel files in .xls(BIFF) and Office 2003 XML format. No sooner we decided to start than we got stuck with a basic question. How do we determine the format of the excel files in Java?
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Jun 28, 2009
I want to play/Stream asf files on android. I tried using android media player but i am getting unsupported file type exception. Does any one have experience with asf file formats with android.
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Aug 30, 2011
I am using a Samsung Galaxy 3 with android 2.2 and I want to install some application what is downloadad from many different sources. So now here is my problem:
1. I copy the choosen .apk file on my SD card.
2. I have downloaded ASTRO file manager.
3. I have ticked the option installing non-android applications.
4. I want to open the apk file from there but when I click on app installer I onyle get a blank screen and under the details I receive the following error message:
Could not open xy.apk as APK file.
In the meantime I have also copied some music files on my mobile, these are all MP3, works fine on my comp however when I wanted to play it on my mobile with several music players it said the file format is not supported...
The phone used to have 2.1 and I made the update manually but after the update...
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Apr 20, 2010
I'm coming over from C# where I can make a namespace and then have each class placed into its own .cs file if I want, but in all of the examples I've seen for android all of the methods and classes are all in one big java file.
Is it possible to put my classes in to their own java files and then import those classes into a main program java file as needed like I do in C#?
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Oct 18, 2010
I keep getting this when trying to start a new project
ERROR: Unable to open class file C:UsersLeviDesktopAndroidworkspaceDroid1gencomandroidbookdroid1R.java: No such file or directory
I tried changing preferences to alter build path to project, but it still wouldnt work,,,
Is subfolder on desktop a bad place to install Eclipse?
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Sep 26, 2010
Did a fresh install of Eclipse, JDK and android-sdk.
I am currently receiving this error when creating a new project
[2010-09-26 16:07:56 - Test] ERROR: Unable to open class file C:workspaceTestgencomexample estR.java: No such file or directory
What's the reason for this and how I fix it?
Eclipse Helios 32 bit
java version "1.6.0_21"
Android sdk API 8
P.S. Im new to Android development.
EDIT: I tried most of you solutions, but nothing worked. So I started using my frineds install of Eclipse Ganymeade.
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Oct 26, 2010
I am new at android development and java programming, but I have decided to program a drinking game app in android. This app basically simulates a deck a cards, a player clicks a button to draw a card then based on the card thats drawn the player plays a drinking game (ie takes 1 drink, takes 2 drinks ect).
I have the main program in one java file, and the code that shuffles the card deck and puts the card sequence in an array in other java file. My problem is that whenever a class from the other java file (classicMode.java) is called from the main program (fubar.java), my android program crashes and gives the error : "The application Drinking Game - FUBAR (process com.games.dg) has stopped unexpectedly. Please try again". Code...
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Jul 19, 2010
Encounter this problem when trying to Build Project getting such output in console:
CODE:....................
I was looking for my project to use the package javax, not found, clean all also does not help.
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Sep 9, 2010
Is there a reason why the Thread class in the SDK LunarLander and JetBoy examples are not each in a separate java file, rather than being inside the View file?
It would make things a bit clearer, IMHO. Am I missing something?
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Sep 1, 2010
What I did was create two .java files. One that can compile and run on a 1.5 phone (SDK3) and then one that works on 2.0(SDK5) So for this example i'll call the 1.5 file ExampleOld and the new one Example. I was wondering if i just made activity like this if it would work sort of like a "portal" and pick the activity to load depending on the SDK so there is no crash or compile errors. Are there any changes I should make to my code? Maybe anyone out there that's had to do this before.
CODE:.................................
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Apr 3, 2010
Is there any class generators to process web services in Android/Java? I may have to write my own to generate classes against WSDL but I'm trying not to. Also is there one for REST services as well?
If not providing me with discovery service suggestions like disco/wsdl are good enough.
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Mar 18, 2010
I've done changes in an Android native library and installed a new system.img file but am now getting an unrelated Error on startup. I can get past it by swallowing the error but I wanted to know if anyone can explain what the issue is.
The Android implementation of Logger.java claims that it is Forcing the LogManager to be initialized since its class init code performs necessary one-time setup. But this forced initialization results in a NoClassDefFoundError. I'm thinking that it has something to do with the class not having been preloaded by Zygote yet but am not that familiar with the whole class loaders and VM business.
code:....................
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Aug 16, 2010
Is there any tool available to convert android dex file format to java class format? I've looked at dex2jar, but it looked very early in development. I'd like something that is stable enought for use.
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Nov 12, 2010
How to convert class file to dex file in android? Is there any way?
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Jun 11, 2010
I'm wondering if and how one can load dex or class files dynamically in dalvik, some quick'n'dirty test function I wrote was this:
CODE:.................
whereas the Foo interface is this
CODE:.................
and f.dex contains some dx'ed implementation of that interface:
CODE:...............
The above test driver throws at defineClass() and it doesn't work and I investigated the dalvik code and found this:
http://www.google.com/codesearch/p?hl=en#atE6BTe41-M/vm/Jni.c&q=Jni.c...
So I'm wondering if anyone can enlighten me if this is possible in some other way or not supposed to be possible.
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Oct 28, 2010
Is there any way to access the value (any constants) from Android.mk file to my java file.
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May 19, 2010
Every time someone leaves me a voicemail on my home phone number, VOIP home phone voice mail box sends me the voicemail as a .wav file attachment. When I try to play this .wav file the phone refuses, saying "Sorry, the player does not support this type of audio file".
So, I take it the .wav files cannot be played on Android phones. Has anyone found a workable and simple workaround to this yet?
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Jun 5, 2010
I am writing an app that needs to be able to open (be associated in the browser download window for example) with a certain file type. The file type has .emx extension and is in an xml format (the top of the files have <?xml version='1.0' encoding="UTF-8"?> ). However, I can't for the life of me get my app associated with this filetype.
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Jun 30, 2010
I retrieved and saved the call history details in the file format. However, I would like to know if we have an option to convert the file format to .csv or .xls or any other format.
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Mar 31, 2010
i have a url for the video file.the format of that file is itunes M4V. i want to play it in android mobile. is it possible? if not so let me know?
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Nov 4, 2010
I am using an application for obtaining the raw data from the image sensor on an Android device. The files I am getting out are in the YUV420SP format,and XnView does not supprt it. Does anyone knows which software I could use to get a proper image? (to convert it)
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Nov 17, 2010
How can I detect whether or not an Image View has a picture in it upon a button click. I had a class that displays a picture and some results, but I don't want the user to be able to access those results (pushing the button) until the results have been written to that class.
So, I figured I needed to check to see if there was a picture displayed in the ImageView yet.
So something like:
CODE:...............
But obviouslt R.id.photoResultView == null isn't the right way to do it...anyone know how?
EDIT: Line 184
CODE:........
EDIT:
CODE:.......................
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Dec 17, 2009
I have a string defined in my String.xml file that uses format arguments, i.e.: <string name="myString">Hello %1$s.</string> Is there a way to assign a value to the format argument in a layout xml file?
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Feb 16, 2012
I was wondering what file format the Alert/Notification sounds that come on Android phones, are in. Everytime I tried to google it I would just get a list of all the sound/music formats supported by android, but never just the format that the stock sounds are in. Is it different for different brand of phones. I didn't think it was, i figured all android phones used the same file formats, but you never know, so I figured I would ask. But either way, what file format the notification/alert sounds are in.
Just in case it is different for some phone makers, I am currently rocking the LG Revolution.
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Jan 14, 2010
can any one provide me solution to this error "The Jar of this class file belongs to container Android 2.0.1 which does not allow modifications". I have searched a lot to this problem but failed. I am using eclipse with ADT.
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Jun 7, 2010
In Visual Studio, I can obtain a succinct list of public methods/members exposed in a class for which I do not have the source (i.e. bundled inside a DLL) by pressing F12 (GoToDefinition).
Similarly, I am learning the Android API - in Eclipse. Jumping to an Android framework method definition produces decompilation output which is not intuitive to read, and is very verbose. To mimic results like Visual Studio, I am considering several options:
How can I format the decompilation output to be 'cleaner' - I have looked through Eclipse's preferences menus and have not found a way to do this.
How do I 'add corresponding source files' once Google provides it, so that jumping to definition yields the actual definition?
Is there a plugin that does this already? I looked into Jadclipse, but that project has not been updated in several years, and is still a decompiler.
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