Hi,
Android launches ART in KitKat, which uses AOT instead of JIT, with some
compromises.
What Are The Compromises?
There are a couple of drawbacks to using AOT compilation, but they are
negligible compared to the advantages. To begin with, fully compiled
machine code will usually consume more st
My android project compiles and builds fine, however, when I'm adding
NanoHTTPD java file (a pure java 1 file http server) I am getting the
following error when launching (without proguard).
*[2013-03-20 23:28:56 - test] Dx
EXCEPTION FROM SIMULATION:[2013-03-20 23:28:56 - test] Dx local variabl
On Wed, Oct 24, 2012 at 1:32 PM, Etienne Fortin wrote:
> I've been wondering for a long time about performance on Android and how it
> can be improved. One area I think is overlooked is Dalvik. From what I can
> understand, Dalvik is a good VM in concept but lack the latest and greatest
> in VM te
Hello,
Usually, Java virtual machines are known for using int-sized width for
short fields as well. Only the arrays (short[]) are exception. What
about Dalvik?
E.g. I have a class which contains 50 fields of type "short".
Sometimes in my application, 1 of these classes exist. This means
that
I've been wondering for a long time about performance on Android and how it
can be improved. One area I think is overlooked is Dalvik. From what I can
understand, Dalvik is a good VM in concept but lack the latest and greatest
in VM technology. I've seen benchmark compared to other VM that are n
I'm trying to build my app ready for release but keep hitting the dreaded
Dalvik error 1, and can't figure out why. I was hoping people here would be
able to diagnose my problem!
My app uses lots of libraries sort of daisy-chained into each other because
some are dependent on others, and it loo
How can I tell what packages/classes are conflicting to cause this?
Is it a problem to have a package's classes contributed from more than
one project as long as the classes do not have the same
package.classname signature?
This is driving me bonkers, this vague error message.
tone
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Hi All,
I'm currently working on a Wrapper for Android, Which wraps an android
apk with some DRM related stuff.. which are by the way Android
activities..
The activities i had created worked perfectly when I tested them in an
Emulator as well as on a Device.
I tried integrating it with an Applic
Good points!
Even if somewhat outdated, I feel like Bornsteins's talk here might be
worth watching:
http://www.youtube.com/watch?v=ptjedOZEXPM
Kris
On Thu, Oct 27, 2011 at 12:40 PM, Dianne Hackborn wrote:
> There are a lot of other performance reasons for the .dex format that I
> didn't see in
Good to know -- thanks!
On Thu, Oct 27, 2011 at 12:40 PM, Dianne Hackborn wrote:
> There are a lot of other performance reasons for the .dex format that I
> didn't see in your article. For example, in Java byte code each class is in
> its own file inside of the zip. In Dalvik, they are all in o
There are a lot of other performance reasons for the .dex format that I
didn't see in your article. For example, in Java byte code each class is in
its own file inside of the zip. In Dalvik, they are all in one .dex file.
This makes it a lot faster to start the app (all code is loaded at once),
http://commonsware.com/blog/Articles/what-is-dalvik.html
On Thu, Oct 27, 2011 at 6:06 AM, bob wrote:
> What is the point of putting stuff in this weird Dalvik format? Why
> not use Java bytecode?
>
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What is the point of putting stuff in this weird Dalvik format? Why
not use Java bytecode?
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In the IO 2010 presentation guys from Google's Dalvik team showed
profiling capabilities of their JIT compiler.
This capability could be enabled with 'dalvik.vm.jit.profile=true' in
system properties.
But I can't profile JIT on GB and HC. Moreover I can't find
'dalvik.vm.jit.profile=true' processi
On Tue, Jul 5, 2011 at 9:06 PM, Bruno Vinicius
wrote:
> Hi,
>
> I've been using annotations on a Android project for a parsing XML
> data into a VO object, and I came to notice that retrieving Annotation
> info from a class or field is very slow. On a 1k iterations loop it
> gives me a 100x fold p
Hi,
I've been using annotations on a Android project for a parsing XML
data into a VO object, and I came to notice that retrieving Annotation
info from a class or field is very slow. On a 1k iterations loop it
gives me a 100x fold performance drop vesus a specific parsing
algorithm version. Cachin
If a class is missing you'll know right away, since Android apps are
compiled against their own set of classes.
However, sometimes there are bugs in Android (or, rather Apache Harmony)
implementation of certain Java classes.
I ran into one with SSLEngine, there are reports of occasional issues wi
Hi all
I am new to Android development
Are there any compability issues between a standard JVM and Dalvik VM?
Are there any classes or packages from the Sun SDK that can't be used on
Android?
Best regards
Per-Jarle Sæther
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Hi,
> I am a part of a project that involves automatically offloading portions of
> an application's execution to a cloud of servers. As such, we try to run
> traditionally difficult algorithms on our Android phones, in particular,
> speech recognition algorithms, namely the CMU Sphinx4 library.
Hi all,
I am a part of a project that involves automatically offloading
portions of an application's execution to a cloud of servers. As such,
we try to run traditionally difficult algorithms on our Android
phones, in particular, speech recognition algorithms, namely the CMU
Sphinx4 library.
The
Hi all,
I am a part of a project that involves automatically offloading portions of
an application's execution to a cloud of servers. As such, we try to run
traditionally difficult algorithms on our Android phones, in particular,
speech recognition algorithms, namely the CMU Sphinx4 library.
The
Hi there,
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:
public void testLoader() {
InputStream in;
int len;
byte[] data = new byte[2048];
t
hi,
is it in any way related to jit that is being developed at google?
www.myriadgroup.com/Media-Centre/News/MYRIAD-BRINGS-3x-FASTER-APPLICATIONS-RICHER-GAME-GRAPHICS-AND-BETTER-BATTERY-LIFE-TO-ANDROID.aspx
thanks
pskink
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Hi Guys,
I am writing the report for my project and I was wondering if anyone could
tell me how to find the current version of the Dalvik VM. My phone is a Dev
phone running cupcake. I just can't find it, I'm sure it must be obvious but
if any of you know I'd really appreciate a pointer.
Cheers,
Ive been trying to get groovy running on dalvikvm. And i have been
trying the route via groovyc (groovyc -> jar -> dx -> dalvikvm).
For testing i put together a jarfile with 3 classfiles, one pure java,
one javaclass that invokes a method on a groovy class, and a groovy
class.
The pure java class
I am trying to convert my project o SDK 1.5. It won't build with the
errror:
"Conversion to Dalvik format failed with error 2"
I have seen other threads refer to problem with annotations, but the
code that is causing problems for me has absolutely no java
annotations in it (no at-signs whatsoev
Hi
I am seeing some problems when my ADP1 is connected via USB to my
Windows dev machine (Win XP).
I sometimes see multiple (usually two) devices in the Dalvik Debug
Monitor. One of these devcies will disappear
when I unplug the ADP1 but one will remain. This is making it rather
difficult to inst
I am using network sockets in a multi-threaded application, and I am
struggling with crashes. Using gdbclient/gdbserver I found it c
crashing in memory allocation. Looks like memory got corrupted
somehow.
What is your experience/knowledge? Is it okay to run multi-threaded
networking applications
With the phone sitting *idle*, Dalvik GCs every 3.5sec on average. A
GC usually takes ~260ms. That means that a whole 7.4% of the time it
is garbage collecting (albeit for only a quarter of a second each
time). *7.4% of the time* the UI is completely unresponsive (and this
percentage increases
Hey all,
I am trying to use *com.sun.cldc.io.j2me.socket.protocol* class
in android for converting code from j2me to android.
But dalvik vm is not getting native implementation of * protected static
native int open0(byte hostname[], int port, int mode);* in protocol
class.Can anyone te
>From adb shell on the emulator, I am prepend the BOOTCLASSPATH to
include a jar that contains an implementation of
android.widget.EditText.
Then from ADB, I launch an activity using the "am" tool.
However, "am" is failing to launch at all with the following errors in
logcat. Any ideas on how to
Hi all,
I am running this bit of code within the emulator (SDK 1.0r)
Log.d(TAG, "I am here - 1");
Location currentLocation =
lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
Log.d(TAG, "I am here - 2");
The logcat output never shows the sec
Are there any official documentaion available for the Dalvik Virtual
Machine?
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What are these messages in LogCat output? My app seems to run fine but
there are several messages like this:
DEBUG/dalvikvm(183): VFY: <...>
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