A Python module to access Java classes as Python classes using JNI.
PyJNIus is a "Work In Progress".
>>> from jnius import autoclass
>>> autoclass('java.lang.System').out.println('Hello world')
Hello world
>>> Stack = autoclass('java.util.Stack')
>>> stack = Stack()
>>> stack.push('hello')
>>> stack.push('world')
>>> print stack.pop()
world
>>> print stack.pop()
helloYou need a java JDK installed (OpenJDK will do), Cython and make to build it.
make
That's it! You can run the tests using
make tests
to ensure everything is running correctly.
- Get http://github.com/kivy/python-for-android
- Compile a distribution with
-m "pyjnius kivy" - Then, you can do this kind of thing:
from time import sleep
from jnius import autoclass
Hardware = autoclass('org.renpy.android.Hardware')
print 'DPI is', Hardware.getDPI()
Hardware.accelerometerEnable(True)
for x in xrange(20):
print Hardware.accelerometerReading()
sleep(.1)It will output something like:
I/python ( 5983): Android kivy bootstrap done. __name__ is __main__
I/python ( 5983): Run user program, change dir and execute main.py
I/python ( 5983): DPI is 160
I/python ( 5983): [0.0, 0.0, 0.0]
I/python ( 5983): [-0.0095768067985773087, 9.3852710723876953, 2.2218191623687744]
I/python ( 5983): [-0.0095768067985773087, 9.3948478698730469, 2.2218191623687744]
I/python ( 5983): [-0.0095768067985773087, 9.3948478698730469, 2.2026655673980713]
I/python ( 5983): [-0.028730420395731926, 9.4044246673583984, 2.2122423648834229]
I/python ( 5983): [-0.019153613597154617, 9.3852710723876953, 2.2026655673980713]
I/python ( 5983): [-0.028730420395731926, 9.3852710723876953, 2.2122423648834229]
I/python ( 5983): [-0.0095768067985773087, 9.3852710723876953, 2.1835119724273682]
I/python ( 5983): [-0.0095768067985773087, 9.3756942749023438, 2.1835119724273682]
I/python ( 5983): [0.019153613597154617, 9.3948478698730469, 2.2122423648834229]
I/python ( 5983): [0.038307227194309235, 9.3852710723876953, 2.2218191623687744]
I/python ( 5983): [-0.028730420395731926, 9.3948478698730469, 2.2026655673980713]
I/python ( 5983): [-0.028730420395731926, 9.3852710723876953, 2.2122423648834229]
I/python ( 5983): [-0.038307227194309235, 9.3756942749023438, 2.2026655673980713]
I/python ( 5983): [0.3926490843296051, 9.3086557388305664, 1.3311761617660522]
I/python ( 5983): [-0.10534487664699554, 9.4331550598144531, 2.1068975925445557]
I/python ( 5983): [0.26815059781074524, 9.3469638824462891, 2.3463177680969238]
I/python ( 5983): [-0.1149216815829277, 9.3852710723876953, 2.31758713722229]
I/python ( 5983): [-0.038307227194309235, 9.41400146484375, 1.8674772977828979]
I/python ( 5983): [0.13407529890537262, 9.4235782623291016, 2.2026655673980713]
When you use autoclass, it will discover all the methods and fields of the object and resolve them. For now, it is better to declare and use only what you need. The previous example can be done manually as follows:
from time import sleep
from java import MetaJavaClass, JavaClass, JavaMethod, JavaStaticMethod
class Hardware(JavaClass):
__metaclass__ = MetaJavaClass
__javaclass__ = 'org/renpy/android/Hardware'
vibrate = JavaStaticMethod('(D)V')
accelerometerEnable = JavaStaticMethod('(Z)V')
accelerometerReading = JavaStaticMethod('()[F')
getDPI = JavaStaticMethod('()I')
# use that new class!
print 'DPI is', Hardware.getDPI()
Hardware.accelerometerEnable()
for x in xrange(20):
print Hardware.accelerometerReading()
sleep(.1)
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