Android的仪器测试 - 如何在方向更改后接收新的活动？

Question

我正在尝试测试,如果新创建的Activity(在方向更改后)正确地重新初始化.下面的代码显示从getActivity()返回的活动是在setUp()中构造的活动,而不是新创建的活动.

测试:

public class MyActivityTest extends ActivityInstrumentationTestCase2<MyActivity>{
 private static final String TAG = "RAMPS";
 private MyActivity mActivity;

 public MyActivityTest() {
    super("com.ramps", MyActivity.class);       
 }

 protected void setUp() throws Exception {
     super.setUp();
     mActivity = getActivity();
     Log.v(TAG, "setUp; activity=" + mActivity);
 }

public void testOrienationChange(){
     mActivity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
     getInstrumentation().waitForIdleSync();
     MyActivity newActivity = getActivity(); //should be new, but it's not
     Log.v(TAG, "testOrienationChange; activity=" + newActivity);       
 }
}

Activiy:

public class MyActivity extends Activity {
    private static final String TAG = "RAMPS";  

 public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Log.v(TAG, "onCreate; activity=" + this);
    setContentView(new TextView(this));     
 }
    //...rest of stuff like onSaveInstanceState() etc.
}

和日志:

06-11 14:16:52.431: V/RAMPS(367): onCreate; activity=MyActivity@44eb8690
06-11 14:16:52.891: V/RAMPS(367): setUp; activity=MyActivity@44eb8690
06-11 14:16:52.971: V/RAMPS(367): onCreate; activity=MyActivity@44ee5178
06-11 14:16:53.131: V/RAMPS(367): testOrienationChange; activity=MyActivity@44eb8690

如前所述,日志显示确实创建了新活动(MyActivity @ 44ee5178),但getActivity()返回在setUp()(MyActivity @ 44eb8690)中创建的旧活动.是否可以访问新创建的？

Answer 1

好吧,我想我终于设法解决了它 - 使用robotium框架.我正在附加解决方案以防有人遇到同样的问题.

测试:

public class MyActivityTest extends ActivityInstrumentationTestCase2<MyActivity>{

private static final String TAG = "RAMPS";
private MyActivity mActivity;
private Solo mSolo;

public MyActivityTest() {
    super("com.ramps", MyActivity.class);

}

@Override
protected void setUp() throws Exception {
    super.setUp();
    mActivity = getActivity();
    mSolo = new Solo(getInstrumentation(), getActivity());
    Log.v(TAG, "setUp; activity=" + mActivity);
}

public void testOrienationChange(){     
    mSolo.setActivityOrientation(Solo.LANDSCAPE);
    getInstrumentation().waitForIdleSync();
    MyActivity newActivity = getActivity(); //should be new, but it's not
    Activity newActivity2 = mSolo.getCurrentActivity(); //this will return new activity
    Log.v(TAG, "testOrienationChange; activity=" + newActivity);
    Log.v(TAG, "testOrienationChange; activity2=" + newActivity2);
}   

}

并记录消息 - 用于确认:

06-11 18:47:02.631: V/RAMPS(716): onCreate; activity=MyActivity@44c326a8
06-11 18:47:03.061: V/RAMPS(716): setUp; activity=MyActivity@44c326a8
06-11 18:47:03.781: V/RAMPS(716): onCreate; activity=MyActivity@44c481e0
06-11 18:47:04.482: V/RAMPS(716): testOrienationChange; activity=MyActivity@44c326a8
06-11 18:47:04.482: V/RAMPS(716): testOrienationChange; activity2=MyActivity@44c481e0

如您所见,从mSolo.getCurrentActivity()返回的活动与在方向更改后创建的活动相同.我真的推荐Robotium - 来自Jayway的另一个很棒的代码!