Class reference
JavaClassWrapper
Inherits Object
Provides access to the Java Native Interface.
Description
The JavaClassWrapper singleton provides a way for the Redot 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 JavaClassWrapper.get_exception() to check if the method threw an exception.
Methods
JavaObject get_exception()
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(String name)
JavaClass wrap(String name)Wraps a class defined in Java, and returns it as a JavaClass Object type that Redot 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: To invoke a constructor, call a method with the same name as the class. For example:
var Intent = JavaClassWrapper.wrap("android.content.Intent")
var intent = Intent.Intent()
Note: This method only works on Android. On every other platform, this method does nothing and returns an empty JavaClass.