Question

如何在我作为后台服务运行的应用程序之外的Java中可靠地模拟Android上的触摸事件（没有生根）？

虽然之前已经提出过这个问题，大多数答案都使用ADB 。（例如How to simulate touch events on Android device?）

https://github.com/chetbox/android-mouse-cursor使用辅助功能提供了一个很好的解决方案，但并不是非常可靠，因为并非所有视图都对此做出响应，并且游戏在大多数时间都没有响应。

private void click() {
  AccessibilityNodeInfo nodeInfo = getRootInActiveWindow();
  if (nodeInfo == null) return;

  AccessibilityNodeInfo nearestNodeToMouse = findSmallestNodeAtPoint(nodeInfo, cursorLayout.x, cursorLayout.y + 50);

  if (nearestNodeToMouse != null) {
    logNodeHierachy(nearestNodeToMouse, 0);
    nearestNodeToMouse.performAction(AccessibilityNodeInfo.ACTION_CLICK);
  }

  nodeInfo.recycle();
}

这是https://github.com/chetbox/android-mouse-cursor使用的当前代码。

Android版本是8.0，股票Android

是否有更好，更可靠的方法来模拟来自Java的这些触摸事件？提前谢谢！

Answer 1

如所建议的，自牛轧糖（API 24）以来，模拟触摸事件的最佳方法是使用可访问性服务和AccessibilityService#dispatchGesture方法。

这是我模拟一次点击事件的方法。

// (x, y) in screen coordinates
private static GestureDescription createClick(float x, float y) {
    // for a single tap a duration of 1 ms is enough
    final int DURATION = 1;

    Path clickPath = new Path();
    clickPath.moveTo(x, y);
    GestureDescription.StrokeDescription clickStroke =
            new GestureDescription.StrokeDescription(clickPath, 0, DURATION);
    GestureDescription.Builder clickBuilder = new GestureDescription.Builder();
    clickBuilder.addStroke(clickStroke);
    return clickBuilder.build();
}

// callback invoked either when the gesture has been completed or cancelled
callback = new AccessibilityService.GestureResultCallback() {
    @Override
    public void onCompleted(GestureDescription gestureDescription) {
        super.onCompleted(gestureDescription);
        Log.d(TAG, "gesture completed");
    }

    @Override
    public void onCancelled(GestureDescription gestureDescription) {
        super.onCancelled(gestureDescription);
        Log.d(TAG, "gesture cancelled");
    }
};

// accessibilityService: contains a reference to an accessibility service
// callback: can be null if you don't care about gesture termination
boolean result = accessibilityService.dispatchGesture(createClick(x, y), callback, null);
Log.d(TAG, "Gesture dispatched? " + result);

要执行其他手势，您可能会发现code used for testing AccessibilityService＃dispatchGesture实现很有用。

如何在没有root的情况下（如Automate和Tasker）可靠地模拟Android上的触摸事件？

1 个答案: