Robotium all the method can not work properly except solo.clickOnScreen

I am using android 3.2 and robotium 2.4.
i get the following error when i try to execute the following snippet of code. 
This code was working before on android 2.3 and 3.1.

public class ExampleHoneycombwifiSetting extends 
ActivityInstrumentationTestCase2 { 

// private static final String 
TARGET_PACKAGE_ID="com.Example.ApplicationToTest"; 
// private static final String 
LAUNCHER_ACTIVITY_FULL_CLASSNAME="com.Example.ApplicationToTest.MainMenuSettings
"; 
private static final String TARGET_PACKAGE_ID="com.android.settings"; 
private static final String 
LAUNCHER_ACTIVITY_FULL_CLASSNAME="com.android.settings.Settings";

private static Class<?> launcherActivityClass; 

static{ 
    try{ 
    launcherActivityClass=Class.forName(LAUNCHER_ACTIVITY_FULL_CLASSNAME); 
    }catch(ClassNotFoundException e){ 
    throw new RuntimeException(e); 
    } 
    } 

    @SuppressWarnings("unchecked") 
    public ExampleHoneycombBTSetting()throws ClassNotFoundException{ 
    super(TARGET_PACKAGE_ID,launcherActivityClass); 
    } 

    private Solo solo;

    @Override 
    protected void setUp()throws Exception{ 
  //  setActivityInitialTouchMode(true); 
    solo = new Solo(getInstrumentation(),getActivity()); 
    } 

    public void testCanOpenSettings() throws Exception {

        solo.sleep(3000);
        solo.clickOnText("Wi-Fi settings");
        //solo.clickOnScreen(796,307);
        solo.sleep(2000);

       for (int i = 1;i<=10;i++){

        Process process = Runtime.getRuntime().exec("logcat -c");
        solo.clickOnButton("BU12_NW");
        solo.sleep(5000);
        solo.enterText(4, "12345678");
        solo.sleep(2000);
        solo.clickOnButton(1);

        solo.sleep(15000);

         solo.clickOnScreen(616, 401);
            solo.sleep(3000);
            solo.clickOnText("Forget");
            solo.sleep(3000);
        }

    }

java.lang.RuntimeException: java.lang.NullPointerException
    at com.jayway.android.robotium.solo.Searcher.searchFor(Searcher.java:107)
    at com.jayway.android.robotium.solo.Waiter.waitForText(Waiter.java:292)
    at com.jayway.android.robotium.solo.Clicker.clickOnText(Clicker.java:254)
    at com.jayway.android.robotium.solo.Solo.clickOnText(Solo.java:830)
    at com.Example.HoneycombBTSetting.ExampleHoneycombBTSetting.testCanOpenSettings(ExampleHoneycombBTSetting.java:72)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at android.test.InstrumentationTestCase.runMethod(InstrumentationTestCase.java:214)
    at android.test.InstrumentationTestCase.runTest(InstrumentationTestCase.java:199)
    at android.test.ActivityInstrumentationTestCase2.runTest(ActivityInstrumentationTestCase2.java:186)
    at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:169)
    at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:154)
    at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:525)
    at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1547)
Caused by: java.lang.NullPointerException
    at com.jayway.android.robotium.solo.ViewFetcher.getNonDecorViews(ViewFetcher.java:188)
    at com.jayway.android.robotium.solo.ViewFetcher.getAllViews(ViewFetcher.java:112)
    at com.jayway.android.robotium.solo.ViewFetcher.getViews(ViewFetcher.java:232)
    at com.jayway.android.robotium.solo.ViewFetcher.getCurrentViews(ViewFetcher.java:430)
    at com.jayway.android.robotium.solo.ViewFetcher.getCurrentViews(ViewFetcher.java:417)
    at com.jayway.android.robotium.solo.Searcher$1.call(Searcher.java:99)
    at com.jayway.android.robotium.solo.Searcher$1.call(Searcher.java:93)
    at com.jayway.android.robotium.solo.Searcher.searchFor(Searcher.java:136)
    at com.jayway.android.robotium.solo.Searcher.searchFor(Searcher.java:105)
    ... 18 more

Test results for InstrumentationTestRunner=.E
Time: 6.783

FAILURES!!!
Tests run: 1,  Failures: 0,  Errors: 1

the error message "at 
com.Example.HoneycombBTSetting.ExampleHoneycombBTSetting.testCanOpenSettings(Exa
mpleHoneycombBTSetting.java:72)"  means solo.clickOnText("Wi-Fi settings"); in 
my code.

why i use clickontext will not work properly,but change clickontext to 
clickOnScreen it can work.

and the clickontext was working before on android 2.3 and 3.1.
Original issue reported on code.google.com by jayhou...@gmail.com on 17 Aug 2011 at 4:02
Merged into: #127
sangmingming / robotium

Robotium all the method can not work properly except solo.clickOnScreen #141
