ImageButtons都沒有發現Robotium的Android

Question

MainActivityFunctionalTest

if (solo.waitForActivity(MainActivity.class)) { 
assertTrue(solo.waitForView(R.id.btn_next)); 
      ImageButton submitBtn = (ImageButton) 
      solo.getImageButton(R.id.btn_next); 
assertNotNull(submitBtn); 
      solo.clickOnImageButton(R.id.btn_next); 
} 

測試案例失敗，原因是出現以下異常：

02-12 15:59:11.612: I/TestRunner(3010): junit.framework.AssertionFailedError: 2131361828 ImageButtons are not found! 
02-12 15:59:11.612: I/TestRunner(3010):  at junit.framework.Assert.fail(Assert.java:50) 
02-12 15:59:11.612: I/TestRunner(3010):  at com.robotium.solo.Waiter.waitForAndGetView(Waiter.java:513) 
02-12 15:59:11.612: I/TestRunner(3010):  at com.robotium.solo.Getter.getView(Getter.java:50) 
02-12 15:59:11.612: I/TestRunner(3010):  at com.robotium.solo.Solo.getImageButton(Solo.java:1850) 
02-12 15:59:11.612: I/TestRunner(3010):  at com.morpho.morphonfclek.test.MainActivityFunctionalTest.testRegistrationFormIsSubmitted(MainActivityFunctionalTest.java:110) 
02-12 15:59:11.612: I/TestRunner(3010):  at java.lang.reflect.Method.invokeNative(Native Method) 
02-12 15:59:11.612: I/TestRunner(3010):  at java.lang.reflect.Method.invoke(Method.java:525) 
02-12 15:59:11.612: I/TestRunner(3010):  at android.test.InstrumentationTestCase.runMethod(InstrumentationTestCase.java:214) 
02-12 15:59:11.612: I/TestRunner(3010):  at android.test.InstrumentationTestCase.runTest(InstrumentationTestCase.java:199) 
02-12 15:59:11.612: I/TestRunner(3010):  at android.test.ActivityInstrumentationTestCase2.runTest(ActivityInstrumentationTestCase2.java:192) 
02-12 15:59:11.612: I/TestRunner(3010):  at junit.framework.TestCase.runBare(TestCase.java:134) 
02-12 15:59:11.612: I/TestRunner(3010):  at junit.framework.TestResult$1.protect(TestResult.java:115) 
02-12 15:59:11.612: I/TestRunner(3010):  at junit.framework.TestResult.runProtected(TestResult.java:133) 
02-12 15:59:11.612: I/TestRunner(3010):  at junit.framework.TestResult.run(TestResult.java:118) 
02-12 15:59:11.612: I/TestRunner(3010):  at junit.framework.TestCase.run(TestCase.java:124) 
02-12 15:59:11.612: I/TestRunner(3010):  at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:191) 
02-12 15:59:11.612: I/TestRunner(3010):  at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:176) 
02-12 15:59:11.612: I/TestRunner(3010):  at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:554) 
02-12 15:59:11.612: I/TestRunner(3010):  at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1740) 

我也試過以下，並遇到了同樣的錯誤：

ImageButton submitBtn = (ImageButton) 
      solo.getView(R.id.btn_next); 

及以下：

ImageButton submitBtn = (ImageButton) 
      mainActivity.findViewById(R.id.btn_next); 

及以下：

View submitBtn = solo.getView(R.id.btn_next); 

但問題依然如故。

請注意，assertNotNull(submitBtn);不會導致失敗==>該按鈕實際上存在！

的佈局如下：
registration.xml

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/Step1Layout" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:orientation="vertical" > 

    <include android:id="@+id/layout_navibar" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentLeft="true" 
     android:layout_below="@id/layout_headbar" 
     layout="@layout/navibar" /> 
</RelativeLayout> 

navibar.xml

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:padding="5dp" 
    android:background="#cc0000" > 

    <ImageButton 
     android:id="@+id/btn_back" 
     android:contentDescription="@string/btn_back" 
     android:background="@android:color/transparent" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentTop="true" 
     android:src="@drawable/ic_navi_home" 
     android:visibility="invisible" /> 


    <ImageButton 
     android:id="@+id/btn_next" 
     android:contentDescription="@string/btn_next" 
     android:background="@android:color/transparent" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentRight="true" 
     android:layout_alignParentTop="true" 
     android:src="@drawable/ic_navi_next" /> 

    <TextView 
     android:id="@+id/label_title" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_centerHorizontal="true" 
     android:layout_centerVertical="true" 
     android:text="@string/app_name" 
     android:textColor="@android:color/white" 
     android:textAppearance="?android:attr/textAppearanceMedium" /> 

</RelativeLayout> 

Answer 1

solo.getImageButton（INT指數）是的ImageButton的索引，而不是資源ID 。請參閱Robotium Javadoc瞭解更多信息。