java - solo.finishOpenActivities() 始终为空

Question

我有一个测试班，但总是进入NullPointerException，tearDown()有人知道为什么吗？

public class LaunchManagerActivityTest extends ActivityInstrumentationTestCase2<LaunchManagerActivity> {

    private Solo solo;

    public LaunchManagerActivityTest() {
        super(LaunchManagerActivity.class);
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();

        solo = new Solo(getInstrumentation(), getActivity());
    }

    @Override
    protected void tearDown() throws Exception {
        super.tearDown();
        solo.finishOpenedActivities();
    }

    public void testOne() {

    }

    public void testTwo() {

    }

Answer 1

 @Override
    protected void tearDown() throws Exception {
        super.tearDown();
        solo.finishOpenedActivities();
    }

实际上应该是：

 @Override
    protected void tearDown() throws Exception {
        solo.finishOpenedActivities();
        super.tearDown();
    }

supers teardown 将关闭启动的活动，但 robotsium 随后会感到困惑，因为它认为活动是打开的，当它尝试对其进行操作时，它是空的。