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What role does Dalvik play in Android development?

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What role does Dalvik play in Android development?
posted Apr 25, 2017 by Karthick.c

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I was experimenting something with Android native code and it needs to access a file in dalvik/vm folder from a .cpp file in frameworks/base/core/jni ... I would like to know if this is even possible through #include or some other technique. I think #include may not be the right way to do it and wold like to know if my purpose can be somehow achieved.

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I tried to run Dalvik in portable mode by setting /data/local.prop as follows:

dalvik.vm.execution-mode = int:portable

But after I reboot the device (which is a Nexus 7), app_process (hosting zygote) still starts in jit mode.

However, if I run:

adb shell stop
adb shell setprop dalvik.vm.execution-mode int:portable
adb shell start

Then app_process will run in portable mode. Is /data/local.prop deprecated or something is missing here?

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I am searching for the smallest and largest in term of size of android app ever built and launched in google play store?

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I have installed my custom app in Packages/apps/

in the app, I use a simple Videoview for video playbacks (3gp or mp4). it works in actual device/ADT emulator, but If I run it in AOSP emulator, it says "Failed to open file : the path of the video"

// Retrieving file from internal file 
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