title: Espresso 'is enabled' doesn't match the selected view
body: <p>I'm using Espresso 2 to test that a button is enabled or not. My code looks like this:</p>
  
  <pre><code>  onView(withId(R.id.fragment_vote_pause_btn)).check(matches(isEnabled()));
  </code></pre>
  
  <p>My button is defined as:</p>
  
  <pre><code>    &lt;Button
          android:id="@+id/fragment_vote_pause_btn"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentBottom="true"
          android:layout_centerHorizontal="true"
          android:background="@android:color/transparent"
          android:text="@string/audiowave_pause_or_play"
          android:textColor="@drawable/play_pause_button_selector"
          android:textAllCaps="false"
          android:textSize="12sp" /&gt;
  </code></pre>
  
  <p>Sometimes the test works but sometimes I get this exception:</p>
  
  <pre><code>android.support.test.espresso.base.DefaultFailureHandler$AssertionFailedWithCauseError: 'is enabled' doesn't match the selected view.
  Expected: is enabled
  Got: "Button{id=2131296458, res-name=fragment_vote_pause_btn, visibility=INVISIBLE, width=329, height=144, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=true, is-enabled=false, is-focused=false, is-focusable=true, is-layout-requested=false, is-selected=false, root-is-layout-requested=false, has-input-connection=false, x=375.0, y=649.0, text=Tap to play or pause, input-type=0, ime-target=false, has-links=false}"
  
  at dalvik.system.VMStack.getThreadStackTrace(Native Method)
  at java.lang.Thread.getStackTrace(Thread.java:580)
  at android.support.test.espresso.base.DefaultFailureHandler.getUserFriendlyError(DefaultFailureHandler.java:82)
  at android.support.test.espresso.base.DefaultFailureHandler.handle(DefaultFailureHandler.java:53)
  at android.support.test.espresso.ViewInteraction.runSynchronouslyOnUiThread(ViewInteraction.java:185)
  at android.support.test.espresso.ViewInteraction.check(ViewInteraction.java:158)
  at be.appfoundry.identify.ui.VoteActivityTest.test2PlayPauseButton(VoteActivityTest.java:39)
  at java.lang.reflect.Method.invoke(Native Method)
  at java.lang.reflect.Method.invoke(Method.java:372)
  at android.test.InstrumentationTestCase.runMethod(InstrumentationTestCase.java:214)
  at android.test.InstrumentationTestCase.runTest(InstrumentationTestCase.java:199)
  at android.test.ActivityInstrumentationTestCase2.runTest(ActivityInstrumentationTestCase2.java:192)
  at junit.framework.TestCase.runBare(TestCase.java:134)
  at junit.framework.TestResult$1.protect(TestResult.java:115)
  at junit.framework.TestResult.runProtected(TestResult.java:133)
  at android.support.test.internal.runner.junit3.DelegatingTestResult.runProtected(DelegatingTestResult.java:90)
  at junit.framework.TestResult.run(TestResult.java:118)
  at android.support.test.internal.runner.junit3.AndroidTestResult.run(AndroidTestResult.java:49)
  at junit.framework.TestCase.run(TestCase.java:124)
  at android.support.test.internal.runner.junit3.NonLeakyTestSuite$NonLeakyTest.run(NonLeakyTestSuite.java:63)
  at junit.framework.TestSuite.runTest(TestSuite.java:243)
  at junit.framework.TestSuite.run(TestSuite.java:238)
  at android.support.test.internal.runner.junit3.DelegatingTestSuite.run(DelegatingTestSuite.java:103)
  at android.support.test.internal.runner.junit3.AndroidTestSuite.run(AndroidTestSuite.java:63)
  at android.support.test.internal.runner.junit3.JUnit38ClassRunner.run(JUnit38ClassRunner.java:90)
  at org.junit.runners.Suite.runChild(Suite.java:128)
  at org.junit.runners.Suite.runChild(Suite.java:24)
  at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
  at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
  at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
  at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
  at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
  at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
  at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
  at org.junit.runner.JUnitCore.run(JUnitCore.java:136)
  at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:270)
  at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1837)
  Caused by: junit.framework.AssertionFailedError: 'is enabled' doesn't match the selected view.
  Expected: is enabled
  Got: "Button{id=2131296458, res-name=fragment_vote_pause_btn, visibility=INVISIBLE, width=329, height=144, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=true, is-enabled=false, is-focused=false, is-focusable=true, is-layout-requested=false, is-selected=false, root-is-layout-requested=false, has-input-connection=false, x=375.0, y=649.0, text=Tap to play or pause, input-type=0, ime-target=false, has-links=false}"
  
  at android.support.test.espresso.matcher.ViewMatchers.assertThat(ViewMatchers.java:955)
  at android.support.test.espresso.assertion.ViewAssertions$2.check(ViewAssertions.java:89)
  at android.support.test.espresso.ViewInteraction$2.run(ViewInteraction.java:170)
  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:422)
  at java.util.concurrent.FutureTask.run(FutureTask.java:237)
  at android.os.Handler.handleCallback(Handler.java:739)
  at android.os.Handler.dispatchMessage(Handler.java:95)
  at android.os.Looper.loop(Looper.java:135)
  at android.app.ActivityThread.main(ActivityThread.java:5221)
  at java.lang.reflect.Method.invoke(Native Method)
  at java.lang.reflect.Method.invoke(Method.java:372)
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
  </code></pre>
  
  <p>Anyone an idea?</p>