godot-docs/classes/class_jnisingleton.rst

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.. _class_JNISingleton:

JNISingleton
============

**Inherits:** :ref:`Object<class_Object>`

Singleton that connects the engine with Android plugins to interface with native Android code.

.. rst-class:: classref-introduction-group

Description
-----------

The JNISingleton is implemented only in the Android export. It's used to call methods and connect signals from an Android plugin written in Java or Kotlin. Methods and signals can be called and connected to the JNISingleton as if it is a Node. See `Java Native Interface - Wikipedia <https://en.wikipedia.org/wiki/Java_Native_Interface>`__ for more information.

.. rst-class:: classref-introduction-group

Tutorials
---------

- `Creating Android plugins <../tutorials/platform/android/android_plugin.html#doc-android-plugin>`__

.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`
.. |bitfield| replace:: :abbr:`BitField (This value is an integer composed as a bitmask of the following flags.)`
.. |void| replace:: :abbr:`void (No return value.)`