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Android example source code file (ListGetCheckItemIdsTest.java)

This example Android source code file (ListGetCheckItemIdsTest.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

already, android, exception, item, listgetcheckitemidstest, listview, mediumtest, multiple, only, override, single, test, third, twice, ui, uithreadtest, unchecked, util, widget

The ListGetCheckItemIdsTest.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;

import android.test.ActivityInstrumentationTestCase2;
import android.test.UiThreadTest;
import android.test.suitebuilder.annotation.MediumTest;
import android.widget.ListView;

import java.util.Arrays;

/**
 * Testing the ListView getCheckItemIds() method in different situations.
 */
public class ListGetCheckItemIdsTest extends ActivityInstrumentationTestCase2<ListSimple> {
    private ListView mListView;

    public ListGetCheckItemIdsTest() {
        super(ListSimple.class);
    }

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

        mListView = getActivity().getListView();
    }

    private void assertChecked(String message, long... expectedIds) {
        // Sort the two arrays since we are actually doing a set equality.
        long[] checkItemIds = mListView.getCheckItemIds();
        long[] sortedCheckItemsIds = new long[checkItemIds.length];
        System.arraycopy(checkItemIds, 0, sortedCheckItemsIds, 0, checkItemIds.length);
        Arrays.sort(sortedCheckItemsIds);

        long[] sortedExpectedIds = new long[expectedIds.length];
        System.arraycopy(expectedIds, 0, sortedExpectedIds, 0, expectedIds.length);
        Arrays.sort(sortedExpectedIds);

        assertTrue(message, Arrays.equals(sortedExpectedIds, sortedCheckItemsIds));
    }

    @MediumTest
    @UiThreadTest
    public void testNoneCheck() {
        mListView.setChoiceMode(ListView.CHOICE_MODE_NONE);

        mListView.setItemChecked(0, true);
        assertChecked("None check choice has item checked");
    }

    @MediumTest
    @UiThreadTest
    public void testSimpleCheck() {
        mListView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
        assertChecked("Item checked when setting Single mode");

        // Test a check at each position
        int childCount = mListView.getChildCount();
        for (int i=0; i<childCount; i++) {
            mListView.setItemChecked(i, true);
            assertChecked("Only element " + i + " should be checked", i);
        }

        // Check an element and uncheck some others
        for (int i = 0; i < childCount; i++) {
            mListView.setItemChecked(i, true);
            mListView.setItemChecked((i - 3 + childCount) % childCount, false);
            mListView.setItemChecked((i + 1) % childCount, false);
            assertChecked("Only element " + i + " should be checked", i);
        }
    }

    @MediumTest
    @UiThreadTest
    public void testMultipleCheck() {
        mListView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
        assertChecked("Item checked when setting Multiple mode");

        int childCount = mListView.getChildCount();
        assertTrue("Tests requires at least 4 items", childCount >= 4);

        mListView.setItemChecked(1, true);
        assertChecked("First element non checked", 1);

        mListView.setItemChecked(3, true);
        assertChecked("Second element not checked", 1, 3);

        mListView.setItemChecked(0, true);
        assertChecked("Third element not checked", 0, 1, 3);

        mListView.setItemChecked(2, false);
        assertChecked("Unchecked element appears checked", 0, 1, 3);

        mListView.setItemChecked(1, false);
        assertChecked("Unchecked element remains", 0, 3);

        mListView.setItemChecked(2, false);
        assertChecked("Already unchecked element appears", 0, 3);

        mListView.setItemChecked(3, false);
        assertChecked("Unchecked 3 remains", 0);

        mListView.setItemChecked(3, false);
        assertChecked("Twice unchecked 3 remains", 0);

        mListView.setItemChecked(0, false);
        assertChecked("Checked items after last element unchecked");
    }

    @MediumTest
    @UiThreadTest
    public void testClearChoices() {
        mListView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
        mListView.setItemChecked(0, true);
        mListView.clearChoices();
        assertChecked("Item checked after SINGLE clear choice");

        mListView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
        int childCount = mListView.getChildCount();
        for (int i = 0; i < childCount; i++) {
            mListView.setItemChecked(0, i % 3 == 0);
        }
        mListView.clearChoices();
        assertChecked("Item checked after MULTIPLE clear choice");
    }
}

Other Android examples (source code examples)

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

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