Hi Dianne,
The following code can work well in my computer:
@UiThreadTest
public void testBikeButton(){
//click the bike button
bike_btn.performClick();
......
//I delete the following code, then it works
//getInstrumentation().waitForIdleSync();
......
}
So what I mean is that, in which case we need to use waitForIdleSync
(), and how to use this method?
On Aug 25, 3:57 pm, Dianne Hackborn <[email protected]> wrote:
> Annotations have nothing to do with this, waitForIdleSync() has nothing to
> do with this, it's just a basic aspect of Android that you can only call on
> to UI objects from the thread running the UI. Use this:
>
> http://developer.android.com/reference/android/app/Instrumentation.ht...
>
> On Tue, Aug 25, 2009 at 12:43 AM, [email protected] <
>
>
>
>
>
> [email protected]> wrote:
>
> > I have found the root cause of this problem.
> > That's because of getInstrumentation().waitForIdleSync()
> > I have seen someone else use waitForIdleSync() after UI action, I want
> > to know if it is necessary, and in which case we need to call this
> > method?
> > If we want to call it, how do we call it correctly?
>
> > On Aug 25, 3:08 pm, "[email protected]"
> > <[email protected]> wrote:
> > > Hi Dianne,
> > > I have tried to annotate the test method with UiThreadTest, but still
> > > it doesn't work, the trace log is:
> > > java.lang.RuntimeException: This method can not be called from the
> > > main application thread
> > > at android.app.Instrumentation.validateNotAppThread
> > > (Instrumentation.java:1500)
> > > at android.app.Instrumentation.waitForIdleSync(Instrumentation.java:
> > > 397)
> > > at com.liufeng.vehicle.test.BikeTests.testBikeButton(BikeTests.java:
> > > 45)
> > > at java.lang.reflect.Method.invokeNative(Native Method)
> > > at android.test.InstrumentationTestCase.runMethod
> > > (InstrumentationTestCase.java:191)
> > > at android.test.InstrumentationTestCase.access$000
> > > (InstrumentationTestCase.java:36)
> > > at android.test.InstrumentationTestCase$2.run
> > > (InstrumentationTestCase.java:171)
> > > at android.app.Instrumentation$SyncRunnable.run(Instrumentation.java:
> > > 1538)
> > > at android.os.Handler.handleCallback(Handler.java:587)
> > > at android.os.Handler.dispatchMessage(Handler.java:92)
> > > at android.os.Looper.loop(Looper.java:123)
> > > at android.app.ActivityThread.main(ActivityThread.java:3948)
> > > at java.lang.reflect.Method.invokeNative(Native Method)
> > > at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run
> > > (ZygoteInit.java:782)
> > > at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
> > > at dalvik.system.NativeStart.main(Native Method)
>
> > > So what's the problem? And is there any other method I can use to
> > > perform a call on UI thread?
>
> > > On Aug 25, 9:40 am, Dianne Hackborn <[email protected]> wrote:
>
> > > > As the error says, you are calling peformClick() for a different thread
> > than
> > > > the UI thread (here the instrumentation thread). You can use the
> > > > Instrumentation API to perform a call on the UI thread.
>
> > > > On Mon, Aug 24, 2009 at 6:08 PM, [email protected] <
>
> > > > [email protected]> wrote:
>
> > > > > no one know it?
>
> > > > > On Aug 24, 11:01 am, "[email protected]"
> > > > > <[email protected]> wrote:
> > > > > > I am using ActivityInstrumentationTestCase2 to do some test for an
> > > > > > activity.
> > > > > > I get a button in the setUp() method like this:
> > > > > > protected void setUp() throws Exception {
> > > > > > super.setUp();
> > > > > > act = getActivity();
> > > > > > ........
> > > > > > btn = (Button)act.findViewById( R.id.bike_button ); // this
> > > > > > button has been defined in layout
> > > > > > }
> > > > > > Then I use this button to perform a click in a test method like
> > this:
> > > > > > public void testBikeButton(){
> > > > > > //click the bike button
> > > > > > btn.performClick();
> > > > > > ......}
>
> > > > > > When run it as android junit, there will be an error like this:
> > > > > > "android.view.ViewRoot$CalledFromWrongThreadException: Only the
> > > > > > original thread that created a view hierarchy can touch its views.
> > > > > > at android.view.ViewRoot.checkThread(ViewRoot.java:2440)
> > > > > > at android.view.ViewRoot.playSoundEffect(ViewRoot.java:2261)
> > > > > > at android.view.View.playSoundEffect(View.java:7457)
> > > > > > at android.view.View.performClick(View.java:2178)
> > > > > > at
> > com.liufeng.vehicle.test.BikeTests.testBikeButton(BikeTests.java:
> > > > > > 40)
> > > > > > at java.lang.reflect.Method.invokeNative(Native Method)
> > > > > > at android.test.InstrumentationTestCase.runMethod
> > > > > > (InstrumentationTestCase.java:191)
> > > > > > at android.test.InstrumentationTestCase.runTest
> > > > > > (InstrumentationTestCase.java:181)
> > > > > > at android.test.ActivityInstrumentationTestCase2.runTest
> > > > > > (ActivityInstrumentationTestCase2.java:175)
> > > > > > at
> > android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:164)
> > > > > > at
> > android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:151)
> > > > > > at android.test.InstrumentationTestRunner.onStart
> > > > > > (InstrumentationTestRunner.java:418)
> > > > > > at android.app.Instrumentation$InstrumentationThread.run
> > > > > > (Instrumentation.java:1520)"
>
> > > > > > How do I fix it?
>
> > > > --
> > > > Dianne Hackborn
> > > > Android framework engineer
> > > > [email protected]
>
> > > > Note: please don't send private questions to me, as I don't have time
> > to
> > > > provide private support, and so won't reply to such e-mails. All such
> > > > questions should be posted on public forums, where I and others can see
> > and
> > > > answer them.- Hide quoted text -
>
> > > > - Show quoted text -- Hide quoted text -
>
> > > - Show quoted text -
>
> --
> Dianne Hackborn
> Android framework engineer
> [email protected]
>
> Note: please don't send private questions to me, as I don't have time to
> provide private support, and so won't reply to such e-mails. All such
> questions should be posted on public forums, where I and others can see and
> answer them.- Hide quoted text -
>
> - Show quoted text -
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