android.cpp File Reference

(This file was last changed: 2015-03-02 13:18:32 +0100, by Jacob Andersen)

Handles to the Java VM running our Android service. More...

#include "PAL/android.h"
#include "FSYS/log.h"
#include <cassert>

Include dependency graph for android.cpp:

Functions
jint	JNI_OnLoad (JavaVM *vm, void *)
	JNI initialization function. More...
void	JNI_OnUnload (JavaVM *vm, void *)
	JNI deinitialization function. More...

Variables
static JavaVM *	theVM = nullptr
static jobject	classLoader = nullptr
static jobject	androidContext = nullptr

Detailed Description

This component bridges the C++ and Java worlds of the Android service by providing the handles into the Android/Java world needed by the C++ components of the PAL layer.

Author

Jacob Andersen, The Alexandra Institute, © 2015

Copyright

© 2014-2015 The 4S Foundation. Licensed under the Apache License ver. 2.0.

Function Documentation

jint JNI_OnLoad	(	JavaVM *	vm,
		void *
	)

This function is called by the JNI (or the Qt library when used in a QtAndroid context) when the library has been loaded and should initialize itself.

We use it to save references to the JavaVM and the Java ClassLoader to use for loading 4S Java classes.

Parameters

vm	The JavaVM pointer.

void JNI_OnUnload	(	JavaVM *	vm,
		void *
	)

This function is called by the JNI (or the Qt library when used in a QtAndroid context) when the library is being unloaded.

We use it to free the references saved in the JNI_OnLoad() function.

Parameters

vm	The JavaVM pointer.