JniObject newObject(int methodId, List args)

Constructs an instance of the wrapped Java class.. @param methodId The method ID of the constructor, obtained via getMethodId. @param args A list of argument values passed to the constructor. Each value should be a Dart number, bool, string, or JniObject instance.

Source

JniObject newObject(int methodId, List args)
    native 'JniClass_NewObject';