Espresso - click an image inside a gridview

Question

I have a view hierarchy like below:

GridView{id=2131362110, res-name=item_list_grid, 
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+----->RelativeLayout{id=2131362124, res-name=item_image_thumb_layout
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+------------->ImageView{id=2131362125, res-name=item_image
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+----->RelativeLayout{id=2131362124, res-name=item_image_thumb_layout
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+------------->ImageView{id=2131362125, res-name=item_image
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+------>RelativeLayout{id=2131362124, res-name=item_image_thumb_layout
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+------------->ImageView{id=2131362125, res-name=item_image
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GridView{id=2131362110, res-name=item_list_grid, ...etc

I want to perfom click on one of the ImageView with id=item_image.

I can not use something like atPosition(x) together with onView so instead I used onData. I tried all of these:

onData(allOf(anything(),withId(R.id.item_image))).atPosition(0).perform(click());

onData(anything()).atPosition(0).perform(click());

onData(allOf(atPosition(0),withId(R.id.item_image))).perform(click());

But all resulted in

android.support.test.espresso.AmbiguousViewMatcherException: 'is assignable from class: class android.widget.AdapterView' matches multiple views in the hierarchy.

Any suggestions for this? Thanks!

Answer 1

Your error message tell you have multiple views in your activity that extends form AdapterView so you have another ListView or GridView in your layout.

You can either select the AdapterView on the data layer. So select this AdapterView with items of type ItemModel

onData(is(instanceOf(ItemModel.class))).atPosition(0)
    .onChildView(withId(R.id.item_image)).perform(click());

or you can choose a specific AdapterView by id

onData(anything()).inAdapterView(withId(R.id.my_grid_view)).atPosition(0).
            onChildView(withId(R.id.item_image)).perform(click());