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ListViewTest.javaAPI DocAndroid 5.1 API4595Thu Mar 12 22:22:12 GMT 2015android.widget

ListViewTest

public class ListViewTest extends android.test.InstrumentationTestCase

Fields Summary
Constructors Summary
Methods Summary
public voidtestNoSelectableItems()
The list view should handle the disappearance of the only selected item, even when that item was selected before its disappearance.

        MockContext context = new MockContext2();
        ListView listView = new ListView(context);
        // We use a header as the unselectable item to remain after the selectable one is removed.
        listView.addHeaderView(new View(context), null, false);
        List<String> items = Lists.newArrayList("hello");
        Adapter<String> adapter = new Adapter<String>(context, 0, items);
        listView.setAdapter(adapter);

        listView.setSelection(1);

        int measureSpec = View.MeasureSpec.makeMeasureSpec(100, View.MeasureSpec.EXACTLY);

        adapter.notifyDataSetChanged();
        listView.measure(measureSpec, measureSpec);
        listView.layout(0, 0, 100, 100);

        items.remove(0);

        adapter.notifyDataSetChanged();
        listView.measure(measureSpec, measureSpec);
        listView.layout(0, 0, 100, 100);
public voidtestRequestLayout()
If a view in a ListView requests a layout it should be remeasured.

        MockContext context = new MockContext2();
        ListView listView = new ListView(context);
        List<String> items = Lists.newArrayList("hello");
        Adapter<String> adapter = new Adapter<String>(context, 0, items);
        listView.setAdapter(adapter);

        int measureSpec = View.MeasureSpec.makeMeasureSpec(100, View.MeasureSpec.EXACTLY);

        adapter.notifyDataSetChanged();
        listView.measure(measureSpec, measureSpec);
        listView.layout(0, 0, 100, 100);

        MockView childView = (MockView) listView.getChildAt(0);

        childView.requestLayout();
        childView.onMeasureCalled = false;
        listView.measure(measureSpec, measureSpec);
        listView.layout(0, 0, 100, 100);
        Assert.assertTrue(childView.onMeasureCalled);