android.view.KeyEvent#isGamepadButton ( )源码实例Demo

/**
 * @return True if event's keycode corresponds to a gamepad key.
 */
public static boolean isGamepadEvent(KeyEvent event) {
    int keyCode = event.getKeyCode();
    switch (keyCode) {
        // Specific handling for dpad keys is required because
        // KeyEvent.isGamepadButton doesn't consider dpad keys.
        case KeyEvent.KEYCODE_DPAD_UP:
        case KeyEvent.KEYCODE_DPAD_DOWN:
        case KeyEvent.KEYCODE_DPAD_LEFT:
        case KeyEvent.KEYCODE_DPAD_RIGHT:
            return true;
        default:
            return KeyEvent.isGamepadButton(keyCode);
    }
}
 

private static boolean isJoystickButton(int keyCode) {
    switch (keyCode) {
        case KeyEvent.KEYCODE_DPAD_CENTER:
        case KeyEvent.KEYCODE_DPAD_LEFT:
        case KeyEvent.KEYCODE_DPAD_RIGHT:
        case KeyEvent.KEYCODE_DPAD_DOWN:
            return true;
        default:
            return KeyEvent.isGamepadButton(keyCode);
    }
}
 

private static boolean isGameKey(int keyCode) {
    switch (keyCode) {
        case KeyEvent.KEYCODE_DPAD_UP:
        case KeyEvent.KEYCODE_DPAD_DOWN:
        case KeyEvent.KEYCODE_DPAD_LEFT:
        case KeyEvent.KEYCODE_DPAD_RIGHT:
        case KeyEvent.KEYCODE_DPAD_CENTER:
        case KeyEvent.KEYCODE_SPACE:
            return true;
        default:
            return KeyEvent.isGamepadButton(keyCode);
    }
}
 

@Override
public boolean onKey (View view, int keyCode, KeyEvent keyEvent) {
	if (ignoreNoGamepadButtons && !keyEvent.isGamepadButton(keyCode)) {
		return false;
	}
	AndroidController controller = controllerMap.get(keyEvent.getDeviceId());
	if(controller != null) {
		if(controller.getButton(keyCode) && keyEvent.getAction() == KeyEvent.ACTION_DOWN) {
			return true;
		}
		synchronized(eventQueue) {
			AndroidControllerEvent event = eventPool.obtain();
			event.controller = controller;
			if(keyEvent.getAction() == KeyEvent.ACTION_DOWN) {
				if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {
					event.type = AndroidControllerEvent.POV;
					controller.pov |= 0x00000001;
					event.povDirection = controller.getPov(0);
				} else if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {
					event.type = AndroidControllerEvent.POV;
					controller.pov |= 0x00000010;
					event.povDirection = controller.getPov(0);
				} else if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) {
					event.type = AndroidControllerEvent.POV;
					controller.pov |= 0x00000100;
					event.povDirection = controller.getPov(0);
				} else if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {
					event.type = AndroidControllerEvent.POV;
					controller.pov |= 0x00001000;
					event.povDirection = controller.getPov(0);
				} else {
					event.type = AndroidControllerEvent.BUTTON_DOWN;
					event.code = keyCode;
				}
			} else {
				if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {
					event.type = AndroidControllerEvent.POV;
					controller.pov &= 0x00001110;
					event.povDirection = controller.getPov(0);
				} else if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {
					event.type = AndroidControllerEvent.POV;
					controller.pov &= 0x00001101;
					event.povDirection = controller.getPov(0);
				} else if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) {
					event.type = AndroidControllerEvent.POV;
					controller.pov &= 0x00001011;
					event.povDirection = controller.getPov(0);
				} else if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {
					event.type = AndroidControllerEvent.POV;
					controller.pov &= 0x00000111;
					event.povDirection = controller.getPov(0);
				} else {
					event.type = AndroidControllerEvent.BUTTON_UP;
					event.code = keyCode;
				}
			}
			eventQueue.add(event);
		}
		if (keyCode == KeyEvent.KEYCODE_BACK && !Gdx.input.isCatchBackKey()) {
			return false;
		}
		return true;
	} else {
		return false;
	}
}
 

private static boolean isFireKey(int keyCode) {
    return KeyEvent.isGamepadButton(keyCode)
            || keyCode == KeyEvent.KEYCODE_DPAD_CENTER
            || keyCode == KeyEvent.KEYCODE_SPACE;
}
 

/**
 * Any gamepad button + the spacebar or DPAD_CENTER will be used as the fire
 * key.
 *
 * @param keyCode
 * @return true of it's a fire key.
 */
private static boolean isFireKey(int keyCode) {
    return KeyEvent.isGamepadButton(keyCode)
            || keyCode == KeyEvent.KEYCODE_DPAD_CENTER
            || keyCode == KeyEvent.KEYCODE_SPACE;
}