Example usage for android.view FocusFinder getInstance

Introduction

In this page you can find the example usage for android.view FocusFinder getInstance.

Prototype

public static FocusFinder getInstance() 

Source Link

Document

Get the focus finder for this thread.

Usage

From source file:cn.org.eshow.framwork.view.slidingmenu.CustomViewAbove.java

/**
 * Arrow scroll.//from   w w  w.j  a  v  a  2s .  c o m
 *
 * @param direction the direction
 * @return true, if successful
 */
public boolean arrowScroll(int direction) {
    View currentFocused = findFocus();
    if (currentFocused == this)
        currentFocused = null;

    boolean handled = false;

    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);
    if (nextFocused != null && nextFocused != currentFocused) {
        if (direction == View.FOCUS_LEFT) {
            handled = nextFocused.requestFocus();
        } else if (direction == View.FOCUS_RIGHT) {
            // If there is nothing to the right, or this is causing us to
            // jump to the left, then what we really want to do is page right.
            if (currentFocused != null && nextFocused.getLeft() <= currentFocused.getLeft()) {
                handled = pageRight();
            } else {
                handled = nextFocused.requestFocus();
            }
        }
    } else if (direction == FOCUS_LEFT || direction == FOCUS_BACKWARD) {
        // Trying to move left and nothing there; try to page.
        handled = pageLeft();
    } else if (direction == FOCUS_RIGHT || direction == FOCUS_FORWARD) {
        // Trying to move right and nothing there; try to page.
        handled = pageRight();
    }
    if (handled) {
        playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction));
    }
    return handled;
}

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From source file:android.support.v7.widget.RecyclerView.java

@Override
public View focusSearch(View focused, int direction) {
    View result = mLayout.onInterceptFocusSearch(focused, direction);
    if (result != null) {
        return result;
    }/*  w  w  w .j av  a 2s .  c o  m*/
    final FocusFinder ff = FocusFinder.getInstance();
    result = ff.findNextFocus(this, focused, direction);
    if (result == null && mAdapter != null) {
        eatRequestLayout();
        result = mLayout.onFocusSearchFailed(focused, direction, mRecycler, mState);
        resumeRequestLayout(false);
    }
    return result != null ? result : super.focusSearch(focused, direction);
}

---

From source file:com.apptentive.android.sdk.view.ApptentiveNestedScrollView.java

/**
 * Handle scrolling in response to an up or down arrow click.
 *
 * @param direction The direction corresponding to the arrow key that was
 *                  pressed//from   w  ww  .  j a  va 2 s  .co m
 * @return True if we consumed the event, false otherwise
 */
public boolean arrowScroll(int direction) {

    View currentFocused = findFocus();
    if (currentFocused == this)
        currentFocused = null;

    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);

    final int maxJump = getMaxScrollAmount();

    if (nextFocused != null && isWithinDeltaOfScreen(nextFocused, maxJump, getHeight())) {
        nextFocused.getDrawingRect(mTempRect);
        offsetDescendantRectToMyCoords(nextFocused, mTempRect);
        int scrollDelta = computeScrollDeltaToGetChildRectOnScreen(mTempRect);
        doScrollY(scrollDelta);
        nextFocused.requestFocus(direction);
    } else {
        // no new focus
        int scrollDelta = maxJump;

        if (direction == View.FOCUS_UP && getScrollY() < scrollDelta) {
            scrollDelta = getScrollY();
        } else if (direction == View.FOCUS_DOWN) {
            if (getChildCount() > 0) {
                int daBottom = getChildAt(0).getBottom();
                int screenBottom = getScrollY() + getHeight() - getPaddingBottom();
                if (daBottom - screenBottom < maxJump) {
                    scrollDelta = daBottom - screenBottom;
                }
            }
        }
        if (scrollDelta == 0) {
            return false;
        }
        doScrollY(direction == View.FOCUS_DOWN ? scrollDelta : -scrollDelta);
    }

    if (currentFocused != null && currentFocused.isFocused() && isOffScreen(currentFocused)) {
        // previously focused item still has focus and is off screen, give
        // it up (take it back to ourselves)
        // (also, need to temporarily force FOCUS_BEFORE_DESCENDANTS so we are
        // sure to
        // get it)
        final int descendantFocusability = getDescendantFocusability(); // save
        setDescendantFocusability(ViewGroup.FOCUS_BEFORE_DESCENDANTS);
        requestFocus();
        setDescendantFocusability(descendantFocusability); // restore
    }
    return true;
}

---

From source file:com.peerless2012.twowaynestedscrollview.TwoWayNestedScrollView.java

/**
 * Handle scrolling in response to an up or down arrow click.
 *
 * @param direction/*from w ww.ja v  a2s  . co m*/
 *            The direction corresponding to the arrow key that was pressed
 * @return True if we consumed the event, false otherwise
 */
public boolean arrowScroll(int direction) {

    View currentFocused = findFocus();
    if (currentFocused == this)
        currentFocused = null;

    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);

    final int maxJump = getMaxScrollYAmount();

    if (nextFocused != null && isWithinDeltaOfScreen(nextFocused, maxJump, getHeight())) {
        nextFocused.getDrawingRect(mTempRect);
        offsetDescendantRectToMyCoords(nextFocused, mTempRect);
        int scrollDelta = computeScrollDeltaToGetChildRectOnScreen(mTempRect);
        doScrollY(scrollDelta);
        nextFocused.requestFocus(direction);
    } else {
        // no new focus
        int scrollDelta = maxJump;

        if (direction == View.FOCUS_UP && getScrollY() < scrollDelta) {
            scrollDelta = getScrollY();
        } else if (direction == View.FOCUS_DOWN) {
            if (getChildCount() > 0) {
                int daBottom = getChildAt(0).getBottom();
                int screenBottom = getScrollY() + getHeight() - getPaddingBottom();
                if (daBottom - screenBottom < maxJump) {
                    scrollDelta = daBottom - screenBottom;
                }
            }
        }
        if (scrollDelta == 0) {
            return false;
        }
        doScrollY(direction == View.FOCUS_DOWN ? scrollDelta : -scrollDelta);
    }

    if (currentFocused != null && currentFocused.isFocused() && isOffScreen(currentFocused)) {
        // previously focused item still has focus and is off screen, give
        // it up (take it back to ourselves)
        // (also, need to temporarily force FOCUS_BEFORE_DESCENDANTS so we
        // are
        // sure to
        // get it)
        final int descendantFocusability = getDescendantFocusability(); // save
        setDescendantFocusability(ViewGroup.FOCUS_BEFORE_DESCENDANTS);
        requestFocus();
        setDescendantFocusability(descendantFocusability); // restore
    }
    return true;
}

---

From source file:com.hippo.widget.BothScrollView.java

/**
 * Handle scrolling in response to a left or right arrow click.
 *
 * @param direction The direction corresponding to the arrow key that was
 *                  pressed//from   ww w. ja  v a2  s  . c om
 * @return True if we consumed the event, false otherwise
 */
public boolean arrowScrollHorizontally(int direction) {

    View currentFocused = findFocus();
    if (currentFocused == this)
        currentFocused = null;

    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);

    final int maxJump = getHorizontalMaxScrollAmount();

    if (nextFocused != null && isWithinDeltaOfScreen(nextFocused, maxJump, getWidth(), getHeight())) {
        nextFocused.getDrawingRect(mTempRect);
        offsetDescendantRectToMyCoords(nextFocused, mTempRect);
        int scrollDelta = computeScrollXDeltaToGetChildRectOnScreen(mTempRect);
        doScrollX(scrollDelta);
        nextFocused.requestFocus(direction);
    } else {
        // no new focus
        int scrollDelta = maxJump;

        if (direction == View.FOCUS_LEFT && getScrollX() < scrollDelta) {
            scrollDelta = getScrollX();
        } else if (direction == View.FOCUS_RIGHT && getChildCount() > 0) {

            int daRight = getChildAt(0).getRight();

            int screenRight = getScrollX() + getWidth() - getPaddingRight();

            if (daRight - screenRight < maxJump) {
                scrollDelta = daRight - screenRight;
            }
        }
        if (scrollDelta == 0) {
            return false;
        }
        doScrollX(direction == View.FOCUS_RIGHT ? scrollDelta : -scrollDelta);
    }

    if (currentFocused != null && currentFocused.isFocused() && isOffScreen(currentFocused)) {
        // previously focused item still has focus and is off screen, give
        // it up (take it back to ourselves)
        // (also, need to temporarily force FOCUS_BEFORE_DESCENDANTS so we are
        // sure to
        // get it)
        final int descendantFocusability = getDescendantFocusability(); // save
        setDescendantFocusability(ViewGroup.FOCUS_BEFORE_DESCENDANTS);
        requestFocus();
        setDescendantFocusability(descendantFocusability); // restore
    }
    return true;
}

---

From source file:com.jzh.stuapp.view.MyViewPager.java

public boolean arrowScroll(int direction) {
    View currentFocused = findFocus();
    if (currentFocused == this)
        currentFocused = null;//from ww w  . j  ava2 s. c o  m

    boolean handled = false;

    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);
    if (nextFocused != null && nextFocused != currentFocused) {
        if (direction == View.FOCUS_LEFT) {
            if (currentFocused != null && nextFocused.getLeft() >= currentFocused.getLeft()) {
                handled = pageLeft();
            } else {
                handled = nextFocused.requestFocus();
            }
        } else if (direction == View.FOCUS_RIGHT) {
            if (currentFocused != null && nextFocused.getLeft() <= currentFocused.getLeft()) {
                handled = pageRight();
            } else {
                handled = nextFocused.requestFocus();
            }
        }
    } else if (direction == FOCUS_LEFT || direction == FOCUS_BACKWARD) {
        handled = pageLeft();
    } else if (direction == FOCUS_RIGHT || direction == FOCUS_FORWARD) {
        handled = pageRight();
    }
    if (handled) {
        playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction));
    }
    return handled;
}

---

From source file:com.hippo.widget.BothScrollView.java

/**
 * Handle scrolling in response to an up or down arrow click.
 *
 * @param direction The direction corresponding to the arrow key that was
 *                  pressed/* w ww  . j  av  a  2s .  c  o  m*/
 * @return True if we consumed the event, false otherwise
 */
public boolean arrowScrollVertically(int direction) {

    View currentFocused = findFocus();
    if (currentFocused == this)
        currentFocused = null;

    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);

    final int maxJump = getVerticalMaxScrollAmount();

    if (nextFocused != null && isWithinDeltaOfScreen(nextFocused, maxJump, getWidth(), getHeight())) {
        nextFocused.getDrawingRect(mTempRect);
        offsetDescendantRectToMyCoords(nextFocused, mTempRect);
        int scrollDelta = computeScrollYDeltaToGetChildRectOnScreen(mTempRect);
        doScrollY(scrollDelta);
        nextFocused.requestFocus(direction);
    } else {
        // no new focus
        int scrollDelta = maxJump;

        if (direction == View.FOCUS_UP && getScrollY() < scrollDelta) {
            scrollDelta = getScrollY();
        } else if (direction == View.FOCUS_DOWN) {
            if (getChildCount() > 0) {
                int daBottom = getChildAt(0).getBottom();
                int screenBottom = getScrollY() + getHeight() - getPaddingBottom();
                if (daBottom - screenBottom < maxJump) {
                    scrollDelta = daBottom - screenBottom;
                }
            }
        }
        if (scrollDelta == 0) {
            return false;
        }
        doScrollY(direction == View.FOCUS_DOWN ? scrollDelta : -scrollDelta);
    }

    if (currentFocused != null && currentFocused.isFocused() && isOffScreen(currentFocused)) {
        // previously focused item still has focus and is off screen, give
        // it up (take it back to ourselves)
        // (also, need to temporarily force FOCUS_BEFORE_DESCENDANTS so we are
        // sure to
        // get it)
        final int descendantFocusability = getDescendantFocusability(); // save
        setDescendantFocusability(ViewGroup.FOCUS_BEFORE_DESCENDANTS);
        requestFocus();
        setDescendantFocusability(descendantFocusability); // restore
    }
    return true;
}

---

From source file:com.apptentive.android.sdk.view.ApptentiveNestedScrollView.java

/**
 * When looking for focus in children of a scroll view, need to be a little
 * more careful not to give focus to something that is scrolled off screen.
 *
 * This is more expensive than the default {@link android.view.ViewGroup}
 * implementation, otherwise this behavior might have been made the default.
 *///from   w  w w  .  ja  v  a  2  s .c om
@Override
protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) {

    // convert from forward / backward notation to up / down / left / right
    // (ugh).
    if (direction == View.FOCUS_FORWARD) {
        direction = View.FOCUS_DOWN;
    } else if (direction == View.FOCUS_BACKWARD) {
        direction = View.FOCUS_UP;
    }

    final View nextFocus = previouslyFocusedRect == null
            ? FocusFinder.getInstance().findNextFocus(this, null, direction)
            : FocusFinder.getInstance().findNextFocusFromRect(this, previouslyFocusedRect, direction);

    if (nextFocus == null) {
        return false;
    }

    if (isOffScreen(nextFocus)) {
        return false;
    }

    return nextFocus.requestFocus(direction, previouslyFocusedRect);
}

---

From source file:com.yao.zhihudaily.tool.LazyViewPager.java

public boolean arrowScroll(int direction) {
    View currentFocused = findFocus();
    if (currentFocused == this)
        currentFocused = null;/*w  w w.  j  av  a2  s  .c o  m*/
    boolean handled = false;
    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);
    if (nextFocused != null && nextFocused != currentFocused) {
        if (direction == View.FOCUS_LEFT) {
            // If there is nothing to the left, or this is causing us to
            // jump to the right, then what we really want to do is page left.
            if (currentFocused != null && nextFocused.getLeft() >= currentFocused.getLeft()) {
                handled = pageLeft();
            } else {
                handled = nextFocused.requestFocus();
            }
        } else if (direction == View.FOCUS_RIGHT) {
            // If there is nothing to the right, or this is causing us to
            // jump to the left, then what we really want to do is page right.
            if (currentFocused != null && nextFocused.getLeft() <= currentFocused.getLeft()) {
                handled = pageRight();
            } else {
                handled = nextFocused.requestFocus();
            }
        }
    } else if (direction == FOCUS_LEFT || direction == FOCUS_BACKWARD) {
        // Trying to move left and nothing there; try to page.
        handled = pageLeft();
    } else if (direction == FOCUS_RIGHT || direction == FOCUS_FORWARD) {
        // Trying to move right and nothing there; try to page.
        handled = pageRight();
    }
    if (handled) {
        playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction));
    }
    return handled;
}

---

From source file:com.example.show.NoPreloadViewPager.java

public boolean arrowScroll(int direction) {
    View currentFocused = findFocus();
    if (currentFocused == this)
        currentFocused = null;/*from  w  w w  .j a  va2s  .c  o  m*/

    boolean handled = false;

    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);
    if (nextFocused != null && nextFocused != currentFocused) {
        if (direction == View.FOCUS_LEFT) {
            // If there is nothing to the left, or this is causing us to  
            // jump to the right, then what we really want to do is page left.  
            if (currentFocused != null && nextFocused.getLeft() >= currentFocused.getLeft()) {
                handled = pageLeft();
            } else {
                handled = nextFocused.requestFocus();
            }
        } else if (direction == View.FOCUS_RIGHT) {
            // If there is nothing to the right, or this is causing us to  
            // jump to the left, then what we really want to do is page right.  
            if (currentFocused != null && nextFocused.getLeft() <= currentFocused.getLeft()) {
                handled = pageRight();
            } else {
                handled = nextFocused.requestFocus();
            }
        }
    } else if (direction == FOCUS_LEFT || direction == FOCUS_BACKWARD) {
        // Trying to move left and nothing there; try to page.  
        handled = pageLeft();
    } else if (direction == FOCUS_RIGHT || direction == FOCUS_FORWARD) {
        // Trying to move right and nothing there; try to page.  
        handled = pageRight();
    }
    if (handled) {
        playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction));
    }
    return handled;
}

---

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