TV测试中的按键长按操作模拟

从UiAutomator在TV测试中的局限性说起：

智能TV的操作和手机的操作有很大不同，一般智能TV的操作为遥控器按键操作，来向TV OS发送 KeyCode，以完成指定操作。

UiAutomator在API中提供了控件和长按操作，也提供了点坐标的长按操作，但无法设置长按的时间。

UiAutomator在API中也提供了模拟发送KeyCode的方法，即UiDevice类中的pressKeyCode方法。

但TV遥控器按键的长按模拟方法，UiAutomator并没有直接提供，而电视中的视频快进等操作需要按键长按，自动化测试有此方面的要求。

一. KeyCode按键长按操作通过Adb命令模拟

COMMAND: adb shell input keyevent --longpress 3

虽然可以实现长按操作，但长按只能实现简单的长按操作，长按时间较短，针对快进等需较长时间长按实现的操作无用。

二. Appium的KeyCode长按模拟

Appium里面实现了按键的长按操作，实现源码核心如下：

public AndroidCommandResult execute(final AndroidCommand command)

      throws JSONException {

    try {

      InteractionController interactionController = UiAutomatorBridge.getInstance().getInteractionController();

      final Hashtable<String, Object> params = command.params();

      keyCode = (Integer) params.get("keycode");

      metaState = params.get("metastate") != JSONObject.NULL ? (Integer) params

          .get("metastate") : 0;

      final long eventTime = SystemClock.uptimeMillis();

      // Send an initial down event

      final KeyEvent downEvent = new KeyEvent(eventTime, eventTime,

          KeyEvent.ACTION_DOWN, keyCode, 0, metaState,

          KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0, InputDevice.SOURCE_KEYBOARD);

      if (interactionController.injectEventSync(downEvent)) {

        // Send a repeat event. This will cause the FLAG_LONG_PRESS to be set.

        final KeyEvent repeatEvent = KeyEvent.changeTimeRepeat(downEvent,

            eventTime, 1);

        interactionController.injectEventSync(repeatEvent);

        // Finally, send the up event

        final KeyEvent upEvent = new KeyEvent(eventTime, eventTime,

            KeyEvent.ACTION_UP, keyCode, 0, metaState,

            KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0, InputDevice.SOURCE_KEYBOARD);

        interactionController.injectEventSync(upEvent);

      }

      return getSuccessResult(true);

    } catch (final Exception e) {

      return getErrorResult(e.getMessage());

    }

  }

核心主要是：injectEventSync方法,剖析其源码发现最终是调用了uiautomator JAR包中 com.android.uiautomator.core.InteractionController类的injectEventSync方法

只是在uiautomator JAR包中，上述类类型为default且上述方法private方法

若要调用需要使用反射技术

三. 自己实现的时间可控的长按操作模拟源码

public void execute(int keycode, int times) {

	int keyCode = keycode;

	int timeCount = times;

    try {

    // InteractionController interactionController = UiAutomatorBridge.getInstance().getInteractionController();

    	System.out.println("......ttt....");

      UiDevice device = UiDevice.getInstance();

      Class UiDevice_class = UiDevice.class;

      Field field_UiD = UiDevice_class.getDeclaredField("mUiAutomationBridge");

      field_UiD.setAccessible(true);

      Object uiAutomatorBridge  =  field_UiD.get(device);

      Class tmp = Class.forName("com.android.uiautomator.core.UiAutomatorBridge");

      Field field = tmp.getDeclaredField("mInteractionController");

      field.setAccessible(true);

      Object interactionController = field.get(uiAutomatorBridge);

      metaState = 0;

      final long eventTime = SystemClock.uptimeMillis();

      // Send an initial down event

      final KeyEvent downEvent = new KeyEvent(eventTime, eventTime,

          KeyEvent.ACTION_DOWN, keyCode, 0, metaState,

          KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0, InputDevice.SOURCE_KEYBOARD);

      System.out.println("......lll,....");

      if (injectEventSync(downEvent,interactionController)) {

        // Send a repeat event. This will cause the FLAG_LONG_PRESS to be set.

        final KeyEvent repeatEvent = KeyEvent.changeTimeRepeat(downEvent,

            eventTime, 1);

       for(int i=0; i<timeCount; i++){

    	   injectEventSync(repeatEvent,interactionController);

       }

        // Finally, send the up event

        System.out.println("......lll,....");

        final KeyEvent upEvent = new KeyEvent(eventTime, eventTime,

            KeyEvent.ACTION_UP, keyCode, 0, metaState,

            KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0, InputDevice.SOURCE_KEYBOARD);

        injectEventSync(upEvent,interactionController);

      }

      return ;

    } catch (final Exception e) {

      return ;

    }

  }

巴特西

TV测试中的按键长按操作模拟

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