Summary: Ctors | Methods | Inherited Methods | [Expand All]

InputDriverEvent

public class InputDriverEvent
extends Object

java.lang.Object
↳	com.google.android.things.userdriver.input.InputDriverEvent

An event to send to an InputDriver. A single event reflects a change in state of one or more components (buttons, motion axes, etc.) of the driver, all happening since the last event.

Usage Example


 InputDriver driver = ...;  // See InputDriver class.
 InputDriverEvent event = new InputDriverEvent();

 event.setKeyPressed(KeyEvent.KEYCODE_A, true);
 event.setKeyPressed(KeyEvent.KEYCODE_B, true);
 driver.emit(event)

 event.clear();
 event.setPosition(MotionEvent.AXIS_X, 10);
 event.setPosition(MotionEvent.AXIS_Y, 5);
 event.setContact(true);
 driver.emit(event);

 event.clear();
 event.setPosition(MotionEvent.AXIS_X, 5);
 event.setKeyPressed(KeyEvent.KEYCODE_A, false);
 driver.emit(event);

 event.clear();
 event.setContact(false);
 event.setKeyPressed(KeyEvent.KEYCODE_B, false);
 driver.emit(event);

This describes a sequence of 4 moments in time: 1) A and B keys were pressed. 2) Positional contact was made at (10,5) 3) Contact moved to (5,5), A key was released. 4) Contact and B key were released. Notice that components not explicitly changed are assumed to stay in the same state.

Clearing Events

Given that components not explicitly changed are assumed to maintain state, it's best practice, but not strictly necessary, to call clear() between emissions. This will only matter if the same event is emitted via multiple drivers, or with a different event between emissions via the same driver, because state is driver-specific. Clearing before each re-use helps avoid potential mix ups if drawing from a common pool of event objects.

Summary

Public constructors
`InputDriverEvent()` Constructor.

Public methods
`void`	`clear()` Clear the event.
`void`	`setContact(boolean contact)` Sets the contact state of the positional input.
`void`	`setKeyPressed(int code, boolean pressed)` Sets a key state.
`void`	`setPosition(int axis, int value)` Sets a position along an axis.

Inherited methods

From class


  
    java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Public constructors