android-runtime

why runtime.halt(0) must be used with caution?

由 妖精的绣舞 提交于 2020-04-17 20:08:33
问题 I want to terminate my app immediatly, because my app is with singleTask mode and if my app take some time to shunt down for any reasons, then the user can not relaunch it immediately and he must wait. so I think to use runtime.halt(0) but it's written to use it with caution and I don't know what I must specifically take care of? I just want my app to shutdown immediatly. 来源： https://stackoverflow.com/questions/61097552/why-runtime-halt0-must-be-used-with-caution

How exactly does JVM differ from Dalvik and/or ART?

由 有些话、适合烂在心里 提交于 2020-01-21 01:44:50
问题 Firstly, I think I may have titled this question poorly, but I couldn't think of the right words, so please, feel free to suggest an edit and I will make it, so that the question is more educational and relevant to others. I know that javax.Swing simply cannot be used for an Android project, and I've accepted this and learned Android XML based UI design, but just out of curiosity, I want to know exactly why . I realize that the screen dimensions of a phone might be something Swing wouldn't

Unified stack for native and Java in Android Runtime (ART)

由 牧云@^-^@ 提交于 2020-01-02 11:06:26
问题 https://developer.android.com/guide/practices/verifying-apps-art.html#Stack_Size This document says that the ART has a unified stack for native and Java. Could you tell me what does it mean? I understand that thread's stack-size can be defined only when it is created, e.g. using constructor of Thread class in Java code or pthread API in native code. So I can not understand how does unified stack affect behavior of applications. Please direct me to some good tutorials or snippet throws

Art: Verification of X took Y ms

由 对着背影说爱祢 提交于 2019-12-30 00:59:28
问题 I've got a warning in my logcat: W/art: Verification of void com.myapp.LoginFragment$override.lambda$logIn$5(com.myapp.LoginFragment, java.lang.Throwable) took 217.578ms Here's the code: subscription = viewModel.logIn() .observeOn(AndroidSchedulers.mainThread()) .subscribe( this::showStudioSelection, error -> { ErrorResponse errorResponse = ErrorResponseFactory.create(error); if (errorResponse.code() == ApiResult.BAD_REQUEST) { Snackbar.make(getView(), R.string.login_bad_credentials, Snackbar

Difference between dexopt and dex2oat?

由 微笑、不失礼 提交于 2019-12-17 21:47:08
问题 Google is moving from Dalvik to ART (Android Runtime). I was trying to understand, how it is going to improve the performance. The best explanation I found is the below image: One of the main component which has changed is dexopt to dex2oat . Since I don't have much idea about these, can anyone explain the difference and how this is going to improve the performance? 回答1: dexopt does some optimizations on the dex file. It does things like replacing a virtual invoke instruction with an

Runtime errors while Launching the Map

由 隐身守侯 提交于 2019-12-13 00:59:06
问题 Here's my onCreate() Method..The two commented lines were used previously to launch the map and it worked fine.Later I found out Google doen't use LocationClient anymore and they use GoogleAPIClient instead.So I changed it. @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Button send = (Button) findViewById(R.id.button2); if(initMap()) { //mLocationClient = new LocationClient(this,this,this); /

How can I enable language-level assertions on the Android Runtime (ART)?

由 回眸只為那壹抹淺笑 提交于 2019-12-10 17:02:28
问题 I have a Pixel-C that I am developing for. My minimum API level is 21, which is also the level at which ART replaced Dalvik. I have tried both of: adb shell setprop dalvik.vm.enableassertions all adb shell setprop debug.assert 1 And they seem to execute successfully. I have placed assert false : "assertions are active!"; in my onStart, and I am not seeing any stack traces in logcat. I would expect the app to exit immediately after I install and run it. Please tell me how to get this assertion

java.lang.StackOverflow Error for Android L preview running art

由 馋奶兔 提交于 2019-12-07 12:20:57
问题 Jumping straight to the topic, Android L introduces a ART as default runtime. I have a Sample Application, basically a document viewer. Most of the document viewing code including back buttons, Search,etc are written in C and the Android App uses JNI interface. I updated my code to make it build for Android L and it seems to open the document just fine. However, when pressing back button and closing the document, the Application seem to crash and the following backtrace is seen: I/DEBUG (

What is ART(Android Run Time), is their any changes required in live android application for making it compatible with ART?

由 a 夏天 提交于 2019-12-06 14:53:11
问题 I am heard that now Google start using ART, a new run-time for executing Android app and its come with Android 4.4 (in some devices). Now I am just want to confirm that, is pro-grammatically any changes are required or not in existing application or their is any criteria for making new application i.e. run on Dalvik but also compatible with ART ? 回答1: I am heard that now Google start using ART, a new run-time for executing Android app and its come with Android 4.4 (in some devices) ART is not

Unified stack for native and Java in Android Runtime (ART)

由 放肆的年华 提交于 2019-12-06 07:26:11
https://developer.android.com/guide/practices/verifying-apps-art.html#Stack_Size This document says that the ART has a unified stack for native and Java. Could you tell me what does it mean? I understand that thread's stack-size can be defined only when it is created, e.g. using constructor of Thread class in Java code or pthread API in native code. So I can not understand how does unified stack affect behavior of applications. Please direct me to some good tutorials or snippet throws StackOverflowError resulted from unified stack. In Dalvik, each thread have a two separate stacks, one for the
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