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Android example source code file (FocusAfterRemovalTest.java)

This example Android source code file (FocusAfterRemovalTest.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, focusafterremovaltest, linearlayout, mediumtest, override, test, ui, view, widget

The FocusAfterRemovalTest.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.FocusAfterRemoval;
import com.android.frameworks.coretests.R;

import android.test.ActivityInstrumentationTestCase;
import android.test.suitebuilder.annotation.MediumTest;
import android.widget.Button;
import android.widget.LinearLayout;
import android.view.KeyEvent;
import android.view.View;

/**
 * {@link FocusAfterRemoval} is set up to exercise cases where the views that
 * have focus become invisible or GONE.
 */
public class FocusAfterRemovalTest extends ActivityInstrumentationTestCase<FocusAfterRemoval> {

    private LinearLayout mLeftLayout;
    private Button mTopLeftButton;
    private Button mBottomLeftButton;
    private Button mTopRightButton;
    private Button mBottomRightButton;

    public FocusAfterRemovalTest() {
        super("com.android.frameworks.coretests", FocusAfterRemoval.class);
    }

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

        final FocusAfterRemoval a = getActivity();
        mLeftLayout = (LinearLayout) a.findViewById(R.id.leftLayout);
        mTopLeftButton = (Button) a.findViewById(R.id.topLeftButton);
        mBottomLeftButton = (Button) a.findViewById(R.id.bottomLeftButton);
        mTopRightButton = (Button) a.findViewById(R.id.topRightButton);
        mBottomRightButton = (Button) a.findViewById(R.id.bottomRightButton);
    }

    // Test that setUp did what we expect it to do.  These asserts
    // can't go in SetUp, or the test will hang.
    @MediumTest
    public void testSetUpConditions() throws Exception {
        assertNotNull(mLeftLayout);
        assertNotNull(mTopLeftButton);
        assertNotNull(mTopRightButton);
        assertNotNull(mBottomLeftButton);
        assertNotNull(mBottomRightButton);

        assertTrue(mTopLeftButton.hasFocus());
    }

    // if a parent layout becomes GONE when one of its children has focus,
    // make sure the focus moves to something visible (bug 827087)
    @MediumTest
    public void testFocusLeavesWhenParentLayoutIsGone() throws Exception {

        // clicking on this button makes its parent linear layout GONE
        sendKeys(KeyEvent.KEYCODE_DPAD_CENTER);
        assertEquals(View.GONE, mLeftLayout.getVisibility());

        assertTrue("focus should jump to visible button",
                mTopRightButton.hasFocus());

    }

    @MediumTest
    public void testFocusLeavesWhenParentLayoutInvisible() throws Exception {

        // move down to bottom left button
        sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
        assertTrue(mBottomLeftButton.hasFocus());

        // clicking on this button makes its parent linear layout INVISIBLE
        sendKeys(KeyEvent.KEYCODE_DPAD_CENTER);
        assertEquals(View.INVISIBLE,
                getActivity().findViewById(R.id.leftLayout).getVisibility());

        assertTrue("focus should jump to visible button",
                mTopRightButton.hasFocus());
    }

    @MediumTest
    public void testFocusLeavesWhenFocusedViewBecomesGone() throws Exception {

        // move to top right
        sendKeys(KeyEvent.KEYCODE_DPAD_RIGHT);
        assertTrue(mTopRightButton.hasFocus());

        // click making it GONE
        sendKeys(KeyEvent.KEYCODE_DPAD_CENTER);
        assertEquals(View.GONE, mTopRightButton.getVisibility());

        assertTrue("focus should jump to visible button",
                mTopLeftButton.hasFocus());
    }

    @MediumTest
    public void testFocusLeavesWhenFocusedViewBecomesInvisible() throws Exception {

        // move to bottom right
        sendKeys(KeyEvent.KEYCODE_DPAD_RIGHT);
        sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
        assertTrue(mBottomRightButton.hasFocus());

        // click making it INVISIBLE
        sendKeys(KeyEvent.KEYCODE_DPAD_CENTER);
        assertEquals(View.INVISIBLE, mBottomRightButton.getVisibility());

        assertTrue("focus should jump to visible button",
                mTopLeftButton.hasFocus());
    }

}

Other Android examples (source code examples)

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

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