ANativeActivity Struct Reference

#include <native_activity.h>

Data Fields
struct ANativeActivityCallbacks *	callbacks
JavaVM *	vm
JNIEnv *	env
jobject	clazz
const char *	internalDataPath
const char *	externalDataPath
int32_t	sdkVersion
void *	instance
AAssetManager *	assetManager
const char *	obbPath

Detailed Description

This structure defines the native side of an android.app.NativeActivity. It is created by the framework, and handed to the application's native code as it is being launched.

Field Documentation

AAssetManager* assetManager

Pointer to the Asset Manager instance for the application. The application uses this to access binary assets bundled inside its own .apk file.

struct ANativeActivityCallbacks* callbacks

Pointer to the callback function table of the native application. You can set the functions here to your own callbacks. The callbacks pointer itself here should not be changed; it is allocated and managed for you by the framework.

jobject clazz

The NativeActivity object handle.

IMPORTANT NOTE: This member is mis-named. It should really be named 'activity' instead of 'clazz', since it's a reference to the NativeActivity instance created by the system for you.

We unfortunately cannot change this without breaking NDK source-compatibility.

JNIEnv* env

JNI context for the main thread of the app. Note that this field can ONLY be used from the main thread of the process; that is, the thread that calls into the ANativeActivityCallbacks.

const char* externalDataPath

Path to this application's external (removable/mountable) data directory.

void* instance

This is the native instance of the application. It is not used by the framework, but can be set by the application to its own instance state.

const char* internalDataPath

Path to this application's internal data directory.

const char* obbPath

Available starting with Honeycomb: path to the directory containing the application's OBB files (if any). If the app doesn't have any OBB files, this directory may not exist.

int32_t sdkVersion

The platform's SDK version code.

JavaVM* vm

The global handle on the process's Java VM.

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The documentation for this struct was generated from the following file:

• native_activity.h