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ShortButtonsTest.javaAPI DocAndroid 5.1 API3951Thu Mar 12 22:22:12 GMT 2015android.widget.scroll.arrowscroll

ShortButtonsTest

public class ShortButtonsTest extends android.test.ActivityInstrumentationTestCase

Fields Summary
private android.widget.ScrollView
mScrollView
private android.graphics.Rect
mTempRect
Constructors Summary
public ShortButtonsTest()

        super("com.android.frameworks.coretests", ShortButtons.class);
Methods Summary
protected booleanisButtonOnScreen(android.widget.Button b)

        
        b.getDrawingRect(mTempRect);
        mScrollView.offsetDescendantRectToMyCoords(b, mTempRect);
        return mTempRect.bottom >= mScrollView.getScrollY()
                && mTempRect.top <= (mScrollView.getScrollY() + mScrollView.getHeight());
protected voidsetUp()

        super.setUp();

        mScrollView = getActivity().getScrollView();
public voidtestPreconditions()

        assertTrue("buttons should be shorter than screen",
                getActivity().getButtonAt(0).getHeight()
                        < mScrollView.getHeight());

        assertTrue("should be enough buttons to have some scrolled off screen",
                getActivity().getLinearLayout().getHeight()
                        > getActivity().getScrollView().getHeight());
public voidtestScrollDownToBottomThroughButtons()

        final int numButtons = getActivity().getNumButtons();

        for (int i = 0; i < numButtons; i++) {
            String prefix = "after " + i + " downs expected button " + i;
            final Button button = getActivity().getButtonAt(i);
            assertTrue(prefix + "  to have focus", button.isFocused());
            assertTrue(prefix + " to be on screen", isButtonOnScreen(button));
            sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
        }

        assertEquals("should be fully scrolled to bottom",
                getActivity().getLinearLayout().getHeight() - mScrollView.getHeight(),
                mScrollView.getScrollY());
public voidtestScrollFromBottomToTopThroughButtons()

        final int numButtons = getActivity().getNumButtons();

        final Button lastButton = getActivity().getButtonAt(numButtons - 1);

        lastButton.post(new Runnable() {
            public void run() {
                lastButton.requestFocus();
            }
        });

        getInstrumentation().waitForIdleSync();

        assertTrue("lastButton.isFocused()", lastButton.isFocused());

        for (int i = numButtons - 1; i >= 0; i--) {
            String prefix = "after " + i + " ups expected button " + i;
            final Button button = getActivity().getButtonAt(i);
            assertTrue(prefix + "  to have focus", button.isFocused());
            assertTrue(prefix + " to be on screen", isButtonOnScreen(button));
            sendKeys(KeyEvent.KEYCODE_DPAD_UP);
        }

        assertEquals("should be fully scrolled to top",
                0,
                mScrollView.getScrollY());