Hello,
I am trying to run a native executable from inside an android java
application.
The native executable exists in my assets. At start of activity, I
copy it from assets to my application cache dir. then I use
ProcessBuilder to run it.
here is a code snippet
private void startEngine(File executableFile) throws IOException {
ProcessBuilder processBuilder = new ProcessBuilder
(executableFile.getPath()).directory(executableFile.getParentFile());
Process process = processBuilder.start();
}
I get an IOException when I try to run this code and here is a snippet
of the stacktrace
java.io.IOException: Error running exec(). Commands: [/data/data/
<my.package.name>/cache/<my_executable_file>] Working Directory: /data/
data/<my.package.name>/cache Environment: [LD_LIBRARY_PATH=/system/
lib, ANDROID_ROOT=/system, ANDROID_ASSETS=/system/app,
ANDROID_SOCKET_zygote=10, PATH=/sbin:/system/sbin:/system/bin:/system/
xbin, EXTERNAL_STORAGE=/sdcard, ANDROID_DATA=/data,
ANDROID_PROPERTY_WORKSPACE=9,32768, BOOTCLASSPATH=/system/framework/
core.jar:/system/framework/ext.jar:/system/framework/framework.jar:/
system/framework/android.policy.jar:/system/framework/services.jar,
ANDROID_BOOTLOGO=1]
at java.lang.ProcessManager.exec(ProcessManager.java:196)
at java.lang.Runtime.exec(Runtime.java:225)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:219)
at <my.package.name>.engine.EngineInterface.startEngine(....)
...........................
...........................
Caused by: java.io.IOException: Permission denied
at java.lang.ProcessManager.exec(Native Method)
at java.lang.ProcessManager.exec(ProcessManager.java:194)
... 18 more
I tried to run "chmod 777" on the file and on cache directory
containing it and I ensured permissions are granted using adb shell.
but I still get this permission exception.
Can anyone help?
thanks in advance
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