Robotium相当于Espresso中的drag()

Question

我正在使用Espresso来测试我的应用程序，我需要在RecyclerView中测试拖放行为。不幸的是，我看不到任何拖拉()动作在浓缩咖啡，我错过了什么?

Answer 1

我没有找到任何Espresso拖动选项。只有swipeUp(), swipeDown(), swipeLwft(), swipeRight()，在这种情况下可能没有用处。

此外，在谷歌组有一个问题没有答案:https://groups.google.com/forum/#!味精/android-test-kit-discuss/X3TDJBUT4Ho/OJAOkTOoxGcJ

虽然，也有Espresso MotionEvents类与sendMovement()方法，但我还没有尝试过。

使用以下代码:

 public static void drag(Instrumentation inst, float fromX, float toX, float fromY,
                            float toY, int stepCount) {
        long downTime = SystemClock.uptimeMillis();
        long eventTime = SystemClock.uptimeMillis();
        float y = fromY;
        float x = fromX;
        float yStep = (toY - fromY) / stepCount;
        float xStep = (toX - fromX) / stepCount;
        MotionEvent event = MotionEvent.obtain(downTime, eventTime,
                MotionEvent.ACTION_DOWN, x, y, 0);
        inst.sendPointerSync(event);
        for (int i = 0; i < stepCount; ++i) {
            y += yStep;
            x += xStep;
            eventTime = SystemClock.uptimeMillis();
            event = MotionEvent.obtain(downTime, eventTime, MotionEvent.ACTION_MOVE, x, y, 0);
            inst.sendPointerSync(event);
        }
        eventTime = SystemClock.uptimeMillis();
        event = MotionEvent.obtain(downTime, eventTime, MotionEvent.ACTION_UP, x, y, 0);
        inst.sendPointerSync(event);
        inst.waitForIdleSync();
    }

还可以阅读TouchUtils(已从API 24弃用):https://developer.android.com/reference/android/test/TouchUtils.html

希望对大家有所帮助