JavaClassWrapper (original) (raw)

Godot Engine

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Inherits: Object

Provides access to the Java Native Interface.

Description

The JavaClassWrapper singleton provides a way for the Godot application to send and receive data through the Java Native Interface (JNI).

Note: This singleton is only available in Android builds.

var LocalDateTime = JavaClassWrapper.wrap("java.time.LocalDateTime") var DateTimeFormatter = JavaClassWrapper.wrap("java.time.format.DateTimeFormatter")

var datetime = LocalDateTime.now() var formatter = DateTimeFormatter.ofPattern("dd-MM-yyyy HH:mm:ss")

print(datetime.format(formatter))

Warning: When calling Java methods, be sure to check get_exception() to check if the method threw an exception.

Methods

Method Descriptions

JavaObject get_exception() 🔗

Returns the Java exception from the last call into a Java class. If there was no exception, it will return null.

Note: This method only works on Android. On every other platform, this method will always return null.

JavaClass wrap(name: String) 🔗

Wraps a class defined in Java, and returns it as a JavaClass Object type that Godot can interact with.

When wrapping inner (nested) classes, use $ instead of . to separate them. For example, JavaClassWrapper.wrap("android.view.WindowManager$LayoutParams") wraps the WindowManager.LayoutParams class.

Note: This method only works on Android. On every other platform, this method does nothing and returns an empty JavaClass.