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Android example source code file (ListSetSelectionTest.java)

This example Android source code file (ListSetSelectionTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

activityinstrumentationtestcase, android, exception, largetest, listsetselectiontest, listsimple, listview, mediumtest, override, runnable, selected, selection, test, ui, view, widget

The ListSetSelectionTest.java Android example source code

/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.widget.listview.touch;

import android.test.ActivityInstrumentationTestCase;
import android.test.suitebuilder.annotation.LargeTest;
import android.test.suitebuilder.annotation.MediumTest;
import android.test.TouchUtils;
import android.view.View;
import android.widget.ListView;

import android.widget.listview.ListSimple;

/**
 * Tests setting the selection in touch mode
 */
public class ListSetSelectionTest extends ActivityInstrumentationTestCase<ListSimple> {
    private ListSimple mActivity;
    private ListView mListView;

    public ListSetSelectionTest() {
        super("com.android.frameworks.coretests", ListSimple.class);
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();

        mActivity = getActivity();
        mListView = getActivity().getListView();
    }

    @MediumTest
    public void testPreconditions() {
        assertNotNull(mActivity);
        assertNotNull(mListView);
    }
    
    @LargeTest
    public void testSetSelection() {
        TouchUtils.dragQuarterScreenDown(this);
        TouchUtils.dragQuarterScreenUp(this);
        
        // Nothing should be selected
        assertEquals("Selection still available after touch", -1, 
                mListView.getSelectedItemPosition());
        
        final int targetPosition = mListView.getAdapter().getCount() / 2;
        
        mActivity.runOnUiThread(new Runnable() {
            public void run() {
                mListView.setSelection(targetPosition);
            }
        });
        getInstrumentation().waitForIdleSync();
        
        boolean found = false;
        int childCount = mListView.getChildCount();
        for (int i=0; i<childCount; i++) {
            View child = mListView.getChildAt(i);
            if (child.getId() == targetPosition) {
                found = true;
                break;
            }
        }
        assertTrue("Selected item not visible in list", found);
    }
 
    @LargeTest
    public void testSetSelectionFromTop() {
        TouchUtils.dragQuarterScreenDown(this);
        TouchUtils.dragQuarterScreenUp(this);
        
        // Nothing should be selected
        assertEquals("Selection still available after touch", -1, 
                mListView.getSelectedItemPosition());
        
        final int targetPosition = mListView.getAdapter().getCount() / 2;
        
        mActivity.runOnUiThread(new Runnable() {
            public void run() {
                mListView.setSelectionFromTop(targetPosition, 100);
            }
        });
        getInstrumentation().waitForIdleSync();
        
        View target = null;
        boolean found = false;
        int childCount = mListView.getChildCount();
        for (int i=0; i<childCount; i++) {
            View child = mListView.getChildAt(i);
            if (child.getId() == targetPosition) {
                target = child;
                found = true;
                break;
            }
        }
        assertTrue("Selected item not visible in list", found);
        
        if (target != null) {
            assertEquals("Selection not at correct location", 100 + mListView.getPaddingTop(), 
                    target.getTop());
        }
    }

    @LargeTest
    public void testSetSelection0() {
        TouchUtils.dragQuarterScreenDown(this);
        TouchUtils.dragQuarterScreenDown(this);
        TouchUtils.dragQuarterScreenDown(this);

        // Nothing should be selected
        assertEquals("Selection still available after touch", -1,
                mListView.getSelectedItemPosition());

        mActivity.runOnUiThread(new Runnable() {
            public void run() {
                mListView.setSelection(0);
            }
        });
        getInstrumentation().waitForIdleSync();

        boolean found = false;
        int childCount = mListView.getChildCount();
        for (int i=0; i<childCount; i++) {
            View child = mListView.getChildAt(i);
            if (child.getId() == 0 && i == 0) {
                found = true;
                break;
            }
        }
        assertTrue("Selected item not visible in list", found);
    }
}

Other Android examples (source code examples)

Here is a short list of links related to this Android ListSetSelectionTest.java source code file:

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