List of usage examples for android.view View FOCUS_RIGHT
int FOCUS_RIGHT
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From source file:com.zhongsou.souyue.ui.HListView.java
@TargetApi(11) private boolean commonKey(int keyCode, int count, KeyEvent event) { if (mAdapter == null || !mIsAttached) { return false; }/* ww w.j a v a 2s. c om*/ if (mDataChanged) { layoutChildren(); } if (android.os.Build.VERSION.SDK_INT < 11) { return false; } boolean handled = false; int action = event.getAction(); if (action != KeyEvent.ACTION_UP) { switch (keyCode) { case KeyEvent.KEYCODE_DPAD_UP: if (event.hasNoModifiers()) { handled = resurrectSelectionIfNeeded(); if (!handled) { while (count-- > 0) { if (arrowScroll(FOCUS_UP)) { handled = true; } else { break; } } } } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { handled = resurrectSelectionIfNeeded() || fullScroll(FOCUS_UP); } break; case KeyEvent.KEYCODE_DPAD_DOWN: if (event.hasNoModifiers()) { handled = resurrectSelectionIfNeeded(); if (!handled) { while (count-- > 0) { if (arrowScroll(FOCUS_DOWN)) { handled = true; } else { break; } } } } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { handled = resurrectSelectionIfNeeded() || fullScroll(FOCUS_DOWN); } break; case KeyEvent.KEYCODE_DPAD_LEFT: if (event.hasNoModifiers()) { handled = handleHorizontalFocusWithinListItem(View.FOCUS_LEFT); } break; case KeyEvent.KEYCODE_DPAD_RIGHT: if (event.hasNoModifiers()) { handled = handleHorizontalFocusWithinListItem(View.FOCUS_RIGHT); } break; case KeyEvent.KEYCODE_DPAD_CENTER: case KeyEvent.KEYCODE_ENTER: if (event.hasNoModifiers()) { handled = resurrectSelectionIfNeeded(); if (!handled && event.getRepeatCount() == 0 && getChildCount() > 0) { keyPressed(); handled = true; } } break; case KeyEvent.KEYCODE_SPACE: if (event.hasNoModifiers()) { handled = resurrectSelectionIfNeeded() || pageScroll(FOCUS_DOWN); } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { handled = resurrectSelectionIfNeeded() || pageScroll(FOCUS_UP); } handled = true; break; case KeyEvent.KEYCODE_PAGE_UP: if (event.hasNoModifiers()) { handled = resurrectSelectionIfNeeded() || pageScroll(FOCUS_UP); } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { handled = resurrectSelectionIfNeeded() || fullScroll(FOCUS_UP); } break; case KeyEvent.KEYCODE_PAGE_DOWN: if (event.hasNoModifiers()) { handled = resurrectSelectionIfNeeded() || pageScroll(FOCUS_DOWN); } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { handled = resurrectSelectionIfNeeded() || fullScroll(FOCUS_DOWN); } break; case KeyEvent.KEYCODE_MOVE_HOME: if (event.hasNoModifiers()) { handled = resurrectSelectionIfNeeded() || fullScroll(FOCUS_UP); } break; case KeyEvent.KEYCODE_MOVE_END: if (event.hasNoModifiers()) { handled = resurrectSelectionIfNeeded() || fullScroll(FOCUS_DOWN); } break; case KeyEvent.KEYCODE_TAB: break; } } if (handled) { return true; } switch (action) { case KeyEvent.ACTION_DOWN: return super.onKeyDown(keyCode, event); case KeyEvent.ACTION_UP: return super.onKeyUp(keyCode, event); case KeyEvent.ACTION_MULTIPLE: return super.onKeyMultiple(keyCode, count, event); default: // shouldn't happen return false; } }
From source file:cn.ismartv.tvrecyclerview.widget.StaggeredGridLayoutManager.java
/** * Converts a focusDirection to orientation. * * @param focusDirection One of {@link View#FOCUS_UP}, {@link View#FOCUS_DOWN}, * {@link View#FOCUS_LEFT}, {@link View#FOCUS_RIGHT}, * {@link View#FOCUS_BACKWARD}, {@link View#FOCUS_FORWARD} * or 0 for not applicable * @return {@link LayoutState#LAYOUT_START} or {@link LayoutState#LAYOUT_END} if focus direction * is applicable to current state, {@link LayoutState#INVALID_LAYOUT} otherwise. *///from w w w. j a va 2s. c om private int convertFocusDirectionToLayoutDirection(int focusDirection) { switch (focusDirection) { case View.FOCUS_BACKWARD: if (mOrientation == VERTICAL) { return LayoutState.LAYOUT_START; } else if (isLayoutRTL()) { return LayoutState.LAYOUT_END; } else { return LayoutState.LAYOUT_START; } case View.FOCUS_FORWARD: if (mOrientation == VERTICAL) { return LayoutState.LAYOUT_END; } else if (isLayoutRTL()) { return LayoutState.LAYOUT_START; } else { return LayoutState.LAYOUT_END; } case View.FOCUS_UP: return mOrientation == VERTICAL ? LayoutState.LAYOUT_START : LayoutState.INVALID_LAYOUT; case View.FOCUS_DOWN: return mOrientation == VERTICAL ? LayoutState.LAYOUT_END : LayoutState.INVALID_LAYOUT; case View.FOCUS_LEFT: return mOrientation == HORIZONTAL ? LayoutState.LAYOUT_START : LayoutState.INVALID_LAYOUT; case View.FOCUS_RIGHT: return mOrientation == HORIZONTAL ? LayoutState.LAYOUT_END : LayoutState.INVALID_LAYOUT; default: if (DEBUG) { Log.d(TAG, "Unknown focus request:" + focusDirection); } return LayoutState.INVALID_LAYOUT; } }
From source file:com.amaze.carbonfilemanager.activities.MainActivity.java
void sendScroll(final HorizontalScrollView scrollView) { final Handler handler = new Handler(); new Thread(new Runnable() { @Override/*from ww w . j a va2 s .com*/ public void run() { try { Thread.sleep(100); } catch (InterruptedException e) { } handler.post(new Runnable() { @Override public void run() { scrollView.fullScroll(View.FOCUS_RIGHT); } }); } }).start(); }
From source file:com.appunite.list.ListView.java
/** * To avoid horizontal focus searches changing the selected item, we * manually focus search within the selected item (as applicable), and * prevent focus from jumping to something within another item. * @param direction one of {View.FOCUS_LEFT, View.FOCUS_RIGHT} * @return Whether this consumes the key event. *///from w ww .jav a2 s.c om private boolean handleHorizontalFocusWithinListItem(int direction) { if (direction != View.FOCUS_LEFT && direction != View.FOCUS_RIGHT) { throw new IllegalArgumentException("direction must be one of" + " {View.FOCUS_LEFT, View.FOCUS_RIGHT}"); } final int numChildren = getChildCount(); if (mItemsCanFocus && numChildren > 0 && mSelectedPosition != INVALID_POSITION) { final View selectedView = getSelectedView(); if (selectedView != null && selectedView.hasFocus() && selectedView instanceof ViewGroup) { final View currentFocus = selectedView.findFocus(); final View nextFocus = FocusFinder.getInstance().findNextFocus((ViewGroup) selectedView, currentFocus, direction); if (nextFocus != null) { // do the math to get interesting rect in next focus' coordinates currentFocus.getFocusedRect(mTempRect); offsetDescendantRectToMyCoords(currentFocus, mTempRect); offsetRectIntoDescendantCoords(nextFocus, mTempRect); if (nextFocus.requestFocus(direction, mTempRect)) { return true; } } // we are blocking the key from being handled (by returning true) // if the global result is going to be some other view within this // list. this is to acheive the overall goal of having // horizontal d-pad navigation remain in the current item. final View globalNextFocus = FocusFinder.getInstance().findNextFocus((ViewGroup) getRootView(), currentFocus, direction); if (globalNextFocus != null) { return isViewAncestorOf(globalNextFocus, this); } } } return false; }
From source file:com.aliasapps.seq.scroller.TwoWayView.java
private boolean handleKeyEvent(int keyCode, int count, KeyEvent event) { if (mAdapter == null || !mIsAttached) { return false; }// ww w.j a v a 2 s . c o m if (mDataChanged) { layoutChildren(); } boolean handled = false; final int action = event.getAction(); if (action != KeyEvent.ACTION_UP) { switch (keyCode) { case KeyEvent.KEYCODE_DPAD_UP: if (mIsVertical) { handled = handleKeyScroll(event, count, View.FOCUS_UP); } else if (KeyEventCompat.hasNoModifiers(event)) { handled = handleFocusWithinItem(View.FOCUS_UP); } break; case KeyEvent.KEYCODE_DPAD_DOWN: { if (mIsVertical) { handled = handleKeyScroll(event, count, View.FOCUS_DOWN); } else if (KeyEventCompat.hasNoModifiers(event)) { handled = handleFocusWithinItem(View.FOCUS_DOWN); } break; } case KeyEvent.KEYCODE_DPAD_LEFT: if (!mIsVertical) { handled = handleKeyScroll(event, count, View.FOCUS_LEFT); } else if (KeyEventCompat.hasNoModifiers(event)) { handled = handleFocusWithinItem(View.FOCUS_LEFT); } break; case KeyEvent.KEYCODE_DPAD_RIGHT: if (!mIsVertical) { handled = handleKeyScroll(event, count, View.FOCUS_RIGHT); } else if (KeyEventCompat.hasNoModifiers(event)) { handled = handleFocusWithinItem(View.FOCUS_RIGHT); } break; case KeyEvent.KEYCODE_DPAD_CENTER: case KeyEvent.KEYCODE_ENTER: if (KeyEventCompat.hasNoModifiers(event)) { handled = resurrectSelectionIfNeeded(); if (!handled && event.getRepeatCount() == 0 && getChildCount() > 0) { keyPressed(); handled = true; } } break; case KeyEvent.KEYCODE_SPACE: if (KeyEventCompat.hasNoModifiers(event)) { handled = resurrectSelectionIfNeeded() || pageScroll(mIsVertical ? View.FOCUS_DOWN : View.FOCUS_RIGHT); } else if (KeyEventCompat.hasModifiers(event, KeyEvent.META_SHIFT_ON)) { handled = resurrectSelectionIfNeeded() || fullScroll(mIsVertical ? View.FOCUS_UP : View.FOCUS_LEFT); } handled = true; break; case KeyEvent.KEYCODE_PAGE_UP: if (KeyEventCompat.hasNoModifiers(event)) { handled = resurrectSelectionIfNeeded() || pageScroll(mIsVertical ? View.FOCUS_UP : View.FOCUS_LEFT); } else if (KeyEventCompat.hasModifiers(event, KeyEvent.META_ALT_ON)) { handled = resurrectSelectionIfNeeded() || fullScroll(mIsVertical ? View.FOCUS_UP : View.FOCUS_LEFT); } break; case KeyEvent.KEYCODE_PAGE_DOWN: if (KeyEventCompat.hasNoModifiers(event)) { handled = resurrectSelectionIfNeeded() || pageScroll(mIsVertical ? View.FOCUS_DOWN : View.FOCUS_RIGHT); } else if (KeyEventCompat.hasModifiers(event, KeyEvent.META_ALT_ON)) { handled = resurrectSelectionIfNeeded() || fullScroll(mIsVertical ? View.FOCUS_DOWN : View.FOCUS_RIGHT); } break; case KeyEvent.KEYCODE_MOVE_HOME: if (KeyEventCompat.hasNoModifiers(event)) { handled = resurrectSelectionIfNeeded() || fullScroll(mIsVertical ? View.FOCUS_UP : View.FOCUS_LEFT); } break; case KeyEvent.KEYCODE_MOVE_END: if (KeyEventCompat.hasNoModifiers(event)) { handled = resurrectSelectionIfNeeded() || fullScroll(mIsVertical ? View.FOCUS_DOWN : View.FOCUS_RIGHT); } break; } } if (handled) { return true; } switch (action) { case KeyEvent.ACTION_DOWN: return super.onKeyDown(keyCode, event); case KeyEvent.ACTION_UP: if (!isEnabled()) { return true; } if (isClickable() && isPressed() && mSelectedPosition >= 0 && mAdapter != null && mSelectedPosition < mAdapter.getCount()) { final View child = getChildAt(mSelectedPosition - mFirstPosition); if (child != null) { performItemClick(child, mSelectedPosition, mSelectedRowId); child.setPressed(false); } setPressed(false); return true; } return false; case KeyEvent.ACTION_MULTIPLE: return super.onKeyMultiple(keyCode, count, event); default: return false; } }
From source file:com.zhongsou.souyue.ui.HListView.java
/** * To avoid horizontal focus searches changing the selected item, we manually focus search within the selected item (as * applicable), and prevent focus from jumping to something within another item. * * @param direction one of {View.FOCUS_LEFT, View.FOCUS_RIGHT} * @return Whether this consumes the key event. *//*from ww w . j a v a2 s . co m*/ private boolean handleHorizontalFocusWithinListItem(int direction) { // TODO: implement this if (direction != View.FOCUS_LEFT && direction != View.FOCUS_RIGHT) { throw new IllegalArgumentException("direction must be one of" + " {View.FOCUS_LEFT, View.FOCUS_RIGHT}"); } final int numChildren = getChildCount(); if (mItemsCanFocus && numChildren > 0 && mSelectedPosition != INVALID_POSITION) { final View selectedView = getSelectedView(); if (selectedView != null && selectedView.hasFocus() && selectedView instanceof ViewGroup) { final View currentFocus = selectedView.findFocus(); final View nextFocus = FocusFinder.getInstance().findNextFocus((ViewGroup) selectedView, currentFocus, direction); if (nextFocus != null) { // do the math to get interesting rect in next focus' coordinates currentFocus.getFocusedRect(mTempRect); offsetDescendantRectToMyCoords(currentFocus, mTempRect); offsetRectIntoDescendantCoords(nextFocus, mTempRect); if (nextFocus.requestFocus(direction, mTempRect)) { return true; } } // we are blocking the key from being handled (by returning true) // if the global result is going to be some other view within this // list. this is to acheive the overall goal of having // horizontal d-pad navigation remain in the current item. final View globalNextFocus = FocusFinder.getInstance().findNextFocus((ViewGroup) getRootView(), currentFocus, direction); if (globalNextFocus != null) { return isViewAncestorOf(globalNextFocus, this); } } } return false; }
From source file:com.filemanager.free.activities.MainActivity.java
public void updatePath(@NonNull final String news, boolean results, int openmode, int folder_count, int file_count) { if (news.length() == 0) return;/* w ww . jav a 2 s .co m*/ if (news == null) return; if (openmode == 1 && news.startsWith("smb:/")) newPath = mainActivityHelper.parseSmbPath(news); else if (openmode == 2) newPath = mainActivityHelper.getIntegralNames(news); else newPath = news; final TextView bapath = (TextView) pathbar.findViewById(R.id.fullpath); final TextView animPath = (TextView) pathbar.findViewById(R.id.fullpath_anim); TextView textView = (TextView) pathbar.findViewById(R.id.pathname); if (!results) { textView.setText(folder_count + " " + getResources().getString(R.string.folders) + "" + " " + file_count + " " + getResources().getString(R.string.files)); } else { bapath.setText(R.string.searchresults); textView.setText(R.string.empty); return; } final String oldPath = bapath.getText().toString(); if (null != oldPath && oldPath.equals(newPath)) return; // implement animation while setting text newPathBuilder = new StringBuffer().append(newPath); oldPathBuilder = new StringBuffer().append(oldPath); final Animation slideIn = AnimationUtils.loadAnimation(this, R.anim.slide_in); Animation slideOut = AnimationUtils.loadAnimation(this, R.anim.slide_out); if (newPath.length() > oldPath.length() && newPathBuilder.delete(oldPath.length(), newPath.length()).toString().equals(oldPath) && oldPath.length() != 0) { // navigate forward newPathBuilder.delete(0, newPathBuilder.length()); newPathBuilder.append(newPath); newPathBuilder.delete(0, oldPath.length()); animPath.setAnimation(slideIn); animPath.animate().setListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { super.onAnimationEnd(animation); new Handler().postDelayed(new Runnable() { @Override public void run() { animPath.setVisibility(View.GONE); bapath.setText(newPath); } }, PATH_ANIM_END_DELAY); } @Override public void onAnimationStart(Animator animation) { super.onAnimationStart(animation); animPath.setVisibility(View.VISIBLE); animPath.setText(newPathBuilder.toString()); //bapath.setText(oldPath); scroll.post(new Runnable() { @Override public void run() { scroll1.fullScroll(View.FOCUS_RIGHT); } }); } @Override public void onAnimationCancel(Animator animation) { super.onAnimationCancel(animation); //onAnimationEnd(animation); } }).setStartDelay(PATH_ANIM_START_DELAY).start(); } else if (newPath.length() < oldPath.length() && oldPathBuilder.delete(newPath.length(), oldPath.length()).toString().equals(newPath)) { // navigate backwards oldPathBuilder.delete(0, oldPathBuilder.length()); oldPathBuilder.append(oldPath); oldPathBuilder.delete(0, newPath.length()); animPath.setAnimation(slideOut); animPath.animate().setListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { super.onAnimationEnd(animation); animPath.setVisibility(View.GONE); bapath.setText(newPath); scroll.post(new Runnable() { @Override public void run() { scroll1.fullScroll(View.FOCUS_RIGHT); } }); } @Override public void onAnimationStart(Animator animation) { super.onAnimationStart(animation); animPath.setVisibility(View.VISIBLE); animPath.setText(oldPathBuilder.toString()); bapath.setText(newPath); scroll.post(new Runnable() { @Override public void run() { scroll1.fullScroll(View.FOCUS_LEFT); } }); } }).setStartDelay(PATH_ANIM_START_DELAY).start(); } else if (oldPath.isEmpty()) { // case when app starts // FIXME: COUNTER is incremented twice on app startup COUNTER++; if (COUNTER == 2) { animPath.setAnimation(slideIn); animPath.setText(newPath); animPath.animate().setListener(new AnimatorListenerAdapter() { @Override public void onAnimationStart(Animator animation) { super.onAnimationStart(animation); animPath.setVisibility(View.VISIBLE); bapath.setText(""); scroll.post(new Runnable() { @Override public void run() { scroll1.fullScroll(View.FOCUS_RIGHT); } }); } @Override public void onAnimationEnd(Animator animation) { super.onAnimationEnd(animation); new Handler().postDelayed(new Runnable() { @Override public void run() { animPath.setVisibility(View.GONE); bapath.setText(newPath); } }, PATH_ANIM_END_DELAY); } @Override public void onAnimationCancel(Animator animation) { super.onAnimationCancel(animation); //onAnimationEnd(animation); } }).setStartDelay(PATH_ANIM_START_DELAY).start(); } } else { // completely different path // first slide out of old path followed by slide in of new path animPath.setAnimation(slideOut); animPath.animate().setListener(new AnimatorListenerAdapter() { @Override public void onAnimationStart(Animator animator) { super.onAnimationStart(animator); animPath.setVisibility(View.VISIBLE); animPath.setText(oldPath); bapath.setText(""); scroll.post(new Runnable() { @Override public void run() { scroll1.fullScroll(View.FOCUS_LEFT); } }); } @Override public void onAnimationEnd(Animator animator) { super.onAnimationEnd(animator); //animPath.setVisibility(View.GONE); animPath.setText(newPath); bapath.setText(""); animPath.setAnimation(slideIn); animPath.animate().setListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { super.onAnimationEnd(animation); new Handler().postDelayed(new Runnable() { @Override public void run() { animPath.setVisibility(View.GONE); bapath.setText(newPath); } }, PATH_ANIM_END_DELAY); } @Override public void onAnimationStart(Animator animation) { super.onAnimationStart(animation); // we should not be having anything here in path bar animPath.setVisibility(View.VISIBLE); bapath.setText(""); scroll.post(new Runnable() { @Override public void run() { scroll1.fullScroll(View.FOCUS_RIGHT); } }); } }).start(); } @Override public void onAnimationCancel(Animator animation) { super.onAnimationCancel(animation); //onAnimationEnd(animation); } }).setStartDelay(PATH_ANIM_START_DELAY).start(); } }
From source file:com.appunite.list.HorizontalListView.java
/** * Handle an arrow scroll going up or down. Take into account whether items are selectable, * whether there are focusable items etc. * * @param direction Either {@link android.view.View#FOCUS_LEFT} or {@link android.view.View#FOCUS_RIGHT}. * @return Whether any scrolling, selection or focus change occured. *///from ww w.j ava 2 s . c o m private boolean arrowScrollImpl(int direction) { if (getChildCount() <= 0) { return false; } View selectedView = getSelectedView(); int selectedPos = mSelectedPosition; int nextSelectedPosition = (direction == View.FOCUS_RIGHT) ? lookForSelectablePosition(selectedPos + 1, true) : lookForSelectablePosition(selectedPos - 1, false); int amountToScroll = amountToScroll(direction, nextSelectedPosition); // if we are moving focus, we may OVERRIDE the default behavior final ArrowScrollFocusResult focusResult = mItemsCanFocus ? arrowScrollFocused(direction) : null; if (focusResult != null) { nextSelectedPosition = focusResult.getSelectedPosition(); amountToScroll = focusResult.getAmountToScroll(); } boolean needToRedraw = focusResult != null; if (nextSelectedPosition != INVALID_POSITION) { handleNewSelectionChange(selectedView, direction, nextSelectedPosition, focusResult != null); setSelectedPositionInt(nextSelectedPosition); setNextSelectedPositionInt(nextSelectedPosition); selectedView = getSelectedView(); selectedPos = nextSelectedPosition; if (mItemsCanFocus && focusResult == null) { // there was no new view found to take focus, make sure we // don't leave focus with the old selection final View focused = getFocusedChild(); if (focused != null) { focused.clearFocus(); } } needToRedraw = true; checkSelectionChanged(); } if (amountToScroll > 0) { scrollListItemsBy((direction == View.FOCUS_UP) ? amountToScroll : -amountToScroll); needToRedraw = true; } // if we didn't find a new focusable, make sure any existing focused // item that was panned off screen gives up focus. if (mItemsCanFocus && (focusResult == null) && selectedView != null && selectedView.hasFocus()) { final View focused = selectedView.findFocus(); if (!isViewAncestorOf(focused, this) || distanceToView(focused) > 0) { focused.clearFocus(); } } // if the current selection is panned off, we need to remove the selection if (nextSelectedPosition == INVALID_POSITION && selectedView != null && !isViewAncestorOf(selectedView, this)) { selectedView = null; hideSelector(); // but we don't want to set the ressurect position (that would make subsequent // unhandled key events bring back the item we just scrolled off!) mResurrectToPosition = INVALID_POSITION; } if (needToRedraw) { if (selectedView != null) { positionSelector(selectedPos, selectedView); mSelectedLeft = selectedView.getLeft(); } if (!awakenScrollBars()) { invalidate(); } invokeOnItemScrollListener(); return true; } return false; }
From source file:android.support.custom.view.VerticalViewPager.java
public boolean arrowScroll(int direction) { View currentFocused = findFocus(); if (currentFocused == this) currentFocused = null;/*w w w. java2 s .c o m*/ boolean handled = false; View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction); if (nextFocused != null && nextFocused != currentFocused) { if (direction == View.FOCUS_UP) { // 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. final int nextUp = getChildRectInPagerCoordinates(mTempRect, nextFocused).top; final int currUp = getChildRectInPagerCoordinates(mTempRect, currentFocused).top; if (currentFocused != null && nextUp >= currUp) { handled = pageUp(); } 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. final int nextDown = getChildRectInPagerCoordinates(mTempRect, nextFocused).bottom; final int currDown = getChildRectInPagerCoordinates(mTempRect, currentFocused).bottom; if (currentFocused != null && nextDown <= currDown) { handled = pageDown(); } else { handled = nextFocused.requestFocus(); } } } else if (direction == FOCUS_LEFT || direction == FOCUS_BACKWARD) { // Trying to move left and nothing there; try to page. handled = pageUp(); } else if (direction == FOCUS_RIGHT || direction == FOCUS_FORWARD) { // Trying to move right and nothing there; try to page. handled = pageDown(); } if (handled) { playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction)); } return handled; }
From source file:cn.ismartv.tvrecyclerview.widget.RecyclerView.java
/** * Since RecyclerView is a collection ViewGroup that includes virtual children (items that are * in the Adapter but not visible in the UI), it employs a more involved focus search strategy * that differs from other ViewGroups./*from w w w.j a v a2 s . c om*/ * <p> * It first does a focus search within the RecyclerView. If this search finds a View that is in * the focus direction with respect to the currently focused View, RecyclerView returns that * child as the next focus target. When it cannot find such child, it calls * {@link LayoutManager#onFocusSearchFailed(View, int, Recycler, State)} to layout more Views * in the focus search direction. If LayoutManager adds a View that matches the * focus search criteria, it will be returned as the focus search result. Otherwise, * RecyclerView will call parent to handle the focus search like a regular ViewGroup. * <p> * When the direction is {@link View#FOCUS_FORWARD} or {@link View#FOCUS_BACKWARD}, a View that * is not in the focus direction is still valid focus target which may not be the desired * behavior if the Adapter has more children in the focus direction. To handle this case, * RecyclerView converts the focus direction to an absolute direction and makes a preliminary * focus search in that direction. If there are no Views to gain focus, it will call * {@link LayoutManager#onFocusSearchFailed(View, int, Recycler, State)} before running a * focus search with the original (relative) direction. This allows RecyclerView to provide * better candidates to the focus search while still allowing the view system to take focus from * the RecyclerView and give it to a more suitable child if such child exists. * * @param focused The view that currently has focus * @param direction One of {@link View#FOCUS_UP}, {@link View#FOCUS_DOWN}, * {@link View#FOCUS_LEFT}, {@link View#FOCUS_RIGHT}, {@link View#FOCUS_FORWARD}, * {@link View#FOCUS_BACKWARD} or 0 for not applicable. * * @return A new View that can be the next focus after the focused View */ @Override public View focusSearch(View focused, int direction) { View result = mLayout.onInterceptFocusSearch(focused, direction); if (result != null) { return result; } final boolean canRunFocusFailure = mAdapter != null && mLayout != null && !isComputingLayout() && !mLayoutFrozen; final FocusFinder ff = FocusFinder.getInstance(); if (canRunFocusFailure && (direction == View.FOCUS_FORWARD || direction == View.FOCUS_BACKWARD)) { // convert direction to absolute direction and see if we have a view there and if not // tell LayoutManager to add if it can. boolean needsFocusFailureLayout = false; if (mLayout.canScrollVertically()) { final int absDir = direction == View.FOCUS_FORWARD ? View.FOCUS_DOWN : View.FOCUS_UP; final View found = ff.findNextFocus(this, focused, absDir); needsFocusFailureLayout = found == null; } if (!needsFocusFailureLayout && mLayout.canScrollHorizontally()) { boolean rtl = mLayout.getLayoutDirection() == ViewCompat.LAYOUT_DIRECTION_RTL; final int absDir = (direction == View.FOCUS_FORWARD) ^ rtl ? View.FOCUS_RIGHT : View.FOCUS_LEFT; final View found = ff.findNextFocus(this, focused, absDir); needsFocusFailureLayout = found == null; } if (needsFocusFailureLayout) { consumePendingUpdateOperations(); final View focusedItemView = findContainingItemView(focused); if (focusedItemView == null) { // panic, focused view is not a child anymore, cannot call super. return null; } eatRequestLayout(); mLayout.onFocusSearchFailed(focused, direction, mRecycler, mState); resumeRequestLayout(false); } result = ff.findNextFocus(this, focused, direction); } else { result = ff.findNextFocus(this, focused, direction); if (result == null && canRunFocusFailure) { consumePendingUpdateOperations(); final View focusedItemView = findContainingItemView(focused); if (focusedItemView == null) { // panic, focused view is not a child anymore, cannot call super. return null; } eatRequestLayout(); result = mLayout.onFocusSearchFailed(focused, direction, mRecycler, mState); resumeRequestLayout(false); } } return isPreferredNextFocus(focused, result, direction) ? result : super.focusSearch(focused, direction); }