Questions tagged [art]

ART (Android RunTime) is an experimental Virtual Machine (VM) added in Android 4.4 (KitKat) as an alternative to the original Dalvik VM. Like Dalvik, it uses .dex files. Unlike Dalvik, it converts .dex files to .oat files on installation. ART is the default VM in the upcoming Android L release.

Filter by
Sorted by
Tagged with
2
votes
0answers
76 views

Why is ART still needed on Android?

The reason Andy Rubin chose Java for Android Dev is not publicly known, only speculations, but it seems to me that the combination of being able to run a Java app everywhere (because the earliest ...
1
vote
0answers
120 views

How do AOT and JIT work together in Android Nougat and later?

The Android OS was using interp years ago, then they added Just-In-Time (JIT). However, since Android 5.0, they replaced JIT with Ahead-Of-Time (AOT) compilation which increased app installation time ...
0
votes
2answers
261 views

does ART use dalvik bytecode?

I know dalvik vm use dalvik bytecode. does ART use dalvik bytecode or something else ?
1
vote
1answer
91 views

MOTO E 1st Gen From Dalvik to ART : com.android.systemui stop and loop

May I first apologize for my english : non-native speaker, some erratic grammar might happen. Si un francophone passe ici, ce sera bien plus facile pour moi ;) I'm NOT skilled in android fix, so be ...
0
votes
0answers
629 views

Lollipop/ART - how do I manually optimize APK files?

I've asked this question before. After checking out logcat, it seems that the OS is looking for the odex files. I've checked the odex files of other system apps on my ROM, and it turns out they're ELF ...
1
vote
1answer
134 views

my lgl16c “lucky” is stuck optimizing apps after I changed the runtime [closed]

my lgl16c was behaving very poorly to the point of which I went to the developer options and swapped the runtime from dalvik to art on android 4.4.2...and now it got stuck "optimizing app 1 of 1" ...
5
votes
1answer
6k views

Album art doesn't change

So I've been successfully using programs to change album arts for my cellphone for the past 3 years and something bothers me about the way that the actual app on the Samsung reverts this changes under ...
0
votes
1answer
159 views

Why Does ART Compile Apps After Upgrade?

I have a Google Nexus 5. Every time I do a system update, I see this message: Android is upgrading... Optimizing app [x] of [y] I understand that ART is compiling my apps. What I don't ...
1
vote
1answer
331 views

How Class Lookup happens in Android ART?

As per my understanding of AOT( Ahead of Time ) compilation in ART, dex files are converted into native codes at the time of installation. Does that mean that the dex files are never referred after ...
6
votes
3answers
11k views

Should Dalvik Cache be wiped in Android OS that supports ART?

When switching custom ROMs (in ART), is it necessary to wipe the Dalvik Cache? Wiping the Cache is necessary, but should wiping Dalvik (which doesn't exist in Android Lollipop and afterward) be ...
0
votes
2answers
497 views

How much time it usually takes to switch Android runtime in KitKat?

I have Dell Venue 3830 and I plan to change its runtime from Dalvik to ART. It has Android KitKat 4.4.2. I have 12 gigs of apps. I want to try ART so I want to know how much time it takes to switch ...
10
votes
2answers
63k views

Clear Caches from ADB?

How do I clear caches (app, individual apps, Dalvik, ART if possible) via ADB? Using apps, recovery, or doing it through Settings are not options for me. Also, my phone is not rooted.
0
votes
2answers
3k views

How to Clear Caches in LG G2 Running Lollipop 5.0.2

The Lollipop update for AT&T LG G2 has pretty much destroyed my phone. I'm hoping clearing out every sort of cache might help. But I can't clear the caches the usual ways because (1) the ...
0
votes
1answer
3k views

No option to switch dalvik to art on galaxy s5 android 5

I was looking for an option to switch from dalvik to art on my galaxy s5 g900f with Android 5,but it was not in the place it should be. Is it because of the Android version? Or maybe only one of them ...
1
vote
1answer
2k views

Running dex2oat on host computer

I have compiled dex2oat on linux-x86_64 for linux-x86. I can run it just like a normal application. The background is, I have a tool which can generate dex codes and I want to perform some basic ...
0
votes
1answer
920 views

Move to SD Card Option Greyed out even for Compatible Apps

I am using a Motorola Moto E with Android Kitkat and I am unable to move applications to my SD Card even for Apps that support moving to SD Card. I am using ART Runtime (Developer) instead of Dalvik....
5
votes
1answer
375 views

Does ART run apps code natively

Since the new ART runtime is compiling the apps AOT, I was wondering whether running an app still includes a virtual machine, or the code is executed directly on the system. I haven't been able to ...
4
votes
1answer
154k views

How to fix instant lock “unfortunately com.android.systemui has stopped” on Moto G with ART

I have had this problem for a couple of days on my first-generation Motorola Moto G. Normally a restart would fix it. However now I am faced with the following error message when trying to unlock the ...
4
votes
1answer
9k views

Nexus 5 has no settings to change runtime

I'm using Nexus 5. It was running on KitKat and I updated to Android L. I wanted to try and check out if it's running on Dalvik or ART, but the settings to change runtime in the Developer Option is ...
3
votes
1answer
715 views

Is ART on Lollipop the same as on KitKat?

I have issues with skype on my KitKat phone with ART enabled. None too serious, but launching is very slow. Will the same issues plague me on Lollipop when my phone gets it?
0
votes
1answer
91 views

Enabling ART on android

How much time it takes to enable android run time on Nexus 4.4.2 kitkat. I have near 90 apps installed. I start it and screen comes that displays optimizing 1 of 90 apps. After it got completed (all ...
0
votes
2answers
2k views

Changed my LG L70 (MS323) runtime from Dalvik to ART and my phone's not working properly. Help?

I switched my LG L70 (MS323)'s runtime from Dalvik to ART, after it restarted and said "Android is upgrading..." and it optimized my 64 apps. After it finishes, I get an error message saying something ...
2
votes
2answers
1k views

Is it safe to switch from dalvik to art runtime?

How can I tell if it would be safe? I am running ViperOne 7.0.1 on an HTC One m7.
3
votes
2answers
7k views

How can I identify if my device is using ART runtime or a Dalvik?

I have an app called Timberman. Under the description it gives an important note: Game is not compatible with ART devices at the moment. Please switch to Dalvik. I don't understand what/ how can ...
1
vote
1answer
5k views

Moto E is not switching on after changing runtime to ART

I changed the runtime option from Dalvik to ART. It asked for a restart. When I did the restart, Moto E has been stuck in boot time. When I hold the power button for sometime, it starts again. It ...
11
votes
1answer
13k views

What is the zygote process still doing in Android L?

I am trying to figure out the specific differences in the Dalvik and ART runtimes. I realize that ART no longer uses the Dalvik VM, however, one of the first things I noticed after installing the ...
4
votes
5answers
7k views

Moto E Not Starting Properly After Changing runtime to ART

I have recently bought a MOTO E and it's working cool. Then I have enabled Developer options and changed my runtime from Dalvik to ART. Afterwards I restarted my device. I got the message saying ...
-1
votes
1answer
724 views

ART Runtime vs Dalvik Runtime [duplicate]

Recently I was looking through developer options on my Moto X and I was interested by the option to do runtime in either dalvik or ART. After doing some research I decided to change my runtime to ART. ...
1
vote
2answers
1k views

Should I switch to ART? [closed]

ART has better performance and better battery life on paper at least. Should I consider switching to it on my moto g? What are the results I can expect? What precautions should I take? Is it easy to ...
0
votes
2answers
3k views

ART makes Facebook app non installable (Error: -24) [duplicate]

I have an Android 4.4.2 phone and I enabled ART instead of Dalvik. When I go to the Google Play Store and try to install Facebook, it can't install the app. I get two errors, sometimes I get ...
20
votes
1answer
21k views

Manually switch from ART to Dalvik

I wanted to try out the new ART runtime, but didn't realize my custom ROM doesn't support it. So now I am getting recurring Force Closed messages after booting, and can't get through to the settings ...
0
votes
1answer
539 views

Scala and ART, android runtime

I understand that Dalvik has a just-in-time compiler. The android team is making ART, android runtime, which has an ahead-of-time compiler. Effectively using Scala can increase code execution time ...
2
votes
1answer
15k views

Xposed Framework with KitKat ART?

I have an SGS-I8190 with CM11 from http://maclaw.pl/ I explored the Xposed Framework, but it is not compatible with ART. It switches back to the old buggy and lame Dalvik. XDA says, that ART ...
3
votes
2answers
2k views

Flash the newer version of ROM over the old one on ART environment

I've flashed Carbon ROM on my LG G2 (D802) device and when e new Nightly release, I download it and put it on my SD Card and dirty flash it (Only clean Dalvik cache and cache partition). Now I've ...
5
votes
2answers
40k views

How do I switch to ART runtime on my Samsung Galaxy S4?

I have Galaxy S4 and I'm trying to find the menu to switch to ART runtime, but I can't find it. The Android version is KitKat 4.4.2. Does Samsung disable this feature?
4
votes
0answers
442 views

Can you change the runtime on an encrypted phone (KitKat)?

Nexus 5 owner here. Basically, I encrypted my phone a while back while on Dalvik Runtime and recently wanted to give ART a try again (to check app compatibility). The problem is that when I set ...
0
votes
6answers
8k views

Device stuck in bootloop after enabling ART

I activated the Android Runtime (ART) instead of Dalvik and after that my phone rebooted but it seems that it's stuck in a bootloop. Will the first bot after choosing ART take some extra time? How ...
1
vote
2answers
184 views

Gmaps location not obtained while using ART

I've been trying to get the current location on my Nexus 5. When I click on the location button on the bottom right corner it keeps showing "waiting for location", but nothing happens. But it ...
2
votes
1answer
2k views

Sim-Toolkit is missing from app drawer

I am running Android 4.4.2 (KitKat) on an Nexus 4. A day before I changed from Dalvik to ART, and after the restart, I noticed that the Sim Toolkit is missing! How do I get it back?
0
votes
0answers
871 views

How do I switch to ART runtime on my Nexus 4?

I have been trying to set ART as my runtime environment. It asks me about the change in the library and reboots my device. But when I check in the Developer options, it shows me dalvik as the runtime ...
7
votes
5answers
17k views

Why is ART not available on Nexus 7 (2012) or Nexus 10 running Android 4.4?

I just updated my Nexus 7 to Android 4.4 KitKat and was looking forward to testing out ART, but that option isn't available. I got word that the Nexus 10 also lack this option, but I can't find any ...
22
votes
1answer
14k views

Dalvik VM vs. ART (Android Runtime): Impact for end-users?

With Nexus 5 (Android 4.4 KitKat), Google has shipped two runtimes to run apps. What are the differences between Dalvik & ART for endusers? How can endusers be affected by this? Is there any ...
1
vote
1answer
3k views

Why is the ART VM slower than the Dalvik VM, at sorting an array when the array size is 62000?

Look at row 62 of this graph. It is the time taken for a quick sort integer array, on a VM for android 4.4 (KitKat). How come that ART is faster except at an array size of 62000? In fact, it is ...
28
votes
1answer
4k views

What kind of app optimizations do newer Android versions do at the first reboot?

I received from my phone carrier, Vodafone IT, the official OTA Google update to Android Ice Cream Sandwich 4.0.4 on my Nexus S. When automatically rebooting for the first time after the update, the ...