Android example source code file (VerticalFocusSearchTest.java)

This example Android source code file (VerticalFocusSearchTest.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, button, exception, focussearchalg, linearlayout, newfocussearchalg, override, suppress, test, ui, verticalfocussearchtest, view, widget

The VerticalFocusSearchTest.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.focus;

import android.widget.focus.VerticalFocusSearch;

import android.test.ActivityInstrumentationTestCase;
import android.test.suitebuilder.annotation.Suppress;
import android.view.FocusFinder;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.LinearLayout;

/**
 * Tests that focus searching works on a vertical linear layout of buttons of
 * various widths and horizontal placements.
 */
// Suppress until bug http://b/issue?id=1416545 is fixed
@Suppress 
public class VerticalFocusSearchTest extends ActivityInstrumentationTestCase<VerticalFocusSearch> {

    private LinearLayout mLayout;

    private Button mTopWide;
    private Button mMidSkinny1Left;
    private Button mMidSkinny2Right;
    private Button mBottomWide;

    private FocusSearchAlg mFocusFinder;

    // helps test old and new impls when figuring out why something that used
    // to work doesn't anymore (or verifying that new works as well as old).
    interface FocusSearchAlg {
        View findNextFocus(ViewGroup root, View focused, int direction);
    }

    // calls new impl
    static class NewFocusSearchAlg implements FocusSearchAlg {

        public View findNextFocus(ViewGroup root, View focused, int direction) {
            return FocusFinder.getInstance()
                    .findNextFocus(root, focused, direction);
        }
    }

    public VerticalFocusSearchTest() {
        super("com.android.frameworks.coretests", VerticalFocusSearch.class);
    }


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

        mLayout = getActivity().getLayout();
        mTopWide = getActivity().getTopWide();
        mMidSkinny1Left = getActivity().getMidSkinny1Left();
        mMidSkinny2Right = getActivity().getMidSkinny2Right();
        mBottomWide = getActivity().getBottomWide();

        mFocusFinder = new NewFocusSearchAlg();
    }

    public void testPreconditions() {
        assertNotNull(mLayout);
        assertNotNull(mTopWide);
        assertNotNull(mMidSkinny1Left);
        assertNotNull(mMidSkinny2Right);
        assertNotNull(mBottomWide);
    }

    public void testSearchFromTopButton() {
        assertNull("going up from mTopWide.",
                mFocusFinder.findNextFocus(mLayout, mTopWide, View.FOCUS_UP));

        assertNull("going left from mTopWide.",
                mFocusFinder.findNextFocus(mLayout, mTopWide, View.FOCUS_LEFT));

        assertNull("going right from mTopWide.",
                mFocusFinder.findNextFocus(mLayout, mTopWide, View.FOCUS_RIGHT));

        assertEquals("going down from mTopWide.",
                mMidSkinny1Left,
                mFocusFinder
                .findNextFocus(mLayout, mTopWide, View.FOCUS_DOWN));
    }

    public void testSearchFromMidLeft() {
        assertNull("going left should have no next focus",
                mFocusFinder.findNextFocus(mLayout, mMidSkinny1Left, View.FOCUS_LEFT));

        assertEquals("going right from mMidSkinny1Left should go to mMidSkinny2Right",
                mMidSkinny2Right,
                mFocusFinder.findNextFocus(mLayout, mMidSkinny1Left, View.FOCUS_RIGHT));

        assertEquals("going up from mMidSkinny1Left should go to mTopWide",
                mTopWide,
                mFocusFinder.findNextFocus(mLayout, mMidSkinny1Left, View.FOCUS_UP));

        assertEquals("going down from mMidSkinny1Left should go to mMidSkinny2Right",
                mMidSkinny2Right,
                mFocusFinder.findNextFocus(mLayout, mMidSkinny1Left, View.FOCUS_DOWN));
    }

    public void testSearchFromMidRight() {
        assertEquals("going left from mMidSkinny2Right should go to mMidSkinny1Left",
                mMidSkinny1Left,
                mFocusFinder.findNextFocus(mLayout, mMidSkinny2Right, View.FOCUS_LEFT));

        assertNull("going right should have no next focus",
                mFocusFinder.findNextFocus(mLayout, mMidSkinny2Right, View.FOCUS_RIGHT));

        assertEquals("going up from mMidSkinny2Right should go to mMidSkinny1Left",
                mMidSkinny1Left,
                mFocusFinder.findNextFocus(mLayout, mMidSkinny2Right, View.FOCUS_UP));
        
        assertEquals("going down from mMidSkinny2Right should go to mBottomWide",
                mBottomWide,
                mFocusFinder.findNextFocus(mLayout, mMidSkinny2Right, View.FOCUS_DOWN));

    }

    public void testSearchFromFromBottom() {
        assertNull("going down from bottom button should have no next focus.",
                mFocusFinder.findNextFocus(mLayout, mBottomWide, View.FOCUS_DOWN));

        assertNull("going left from bottom button should have no next focus.",
                mFocusFinder.findNextFocus(mLayout, mBottomWide, View.FOCUS_LEFT));

        assertNull("going right from bottom button should have no next focus.",
                mFocusFinder.findNextFocus(mLayout, mBottomWide, View.FOCUS_RIGHT));

        assertEquals("going up from bottom button should go to mMidSkinny2Right.",
                mMidSkinny2Right,
                mFocusFinder.findNextFocus(mLayout, mBottomWide, View.FOCUS_UP));
    }
}