下面列出了android.view.accessibility.AccessibilityNodeInfo#setScrollable ( ) 实例代码,或者点击链接到github查看源代码,也可以在右侧发表评论。
/** @hide */
@Override
public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfoInternal(info);
final int scrollRange = getScrollRange();
if (scrollRange > 0) {
info.setScrollable(true);
if (isEnabled() && mScrollX > 0) {
info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_BACKWARD);
info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_LEFT);
}
if (isEnabled() && mScrollX < scrollRange) {
info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_FORWARD);
info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_RIGHT);
}
}
}
/** @hide */
@Override
public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfoInternal(info);
if (isEnabled()) {
final int scrollRange = getScrollRange();
if (scrollRange > 0) {
info.setScrollable(true);
if (mScrollY > 0) {
info.addAction(
AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_BACKWARD);
info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_UP);
}
if (mScrollY < scrollRange) {
info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_FORWARD);
info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_DOWN);
}
}
}
}
@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(info);
info.setScrollable(isScrollableForAccessibility());
View selectedView = getSelectedView();
if (selectedView != null) {
info.setEnabled(selectedView.isEnabled());
}
}
/** @hide */
@Override
public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfoInternal(info);
info.setScrollable(mItemCount > 1);
if (isEnabled()) {
if (mItemCount > 0 && mSelectedPosition < mItemCount - 1) {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_FORWARD);
}
if (isEnabled() && mItemCount > 0 && mSelectedPosition > 0) {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD);
}
}
}
/** @hide */
@Override
public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfoInternal(info);
info.setScrollable(isScrollableForAccessibility());
View selectedView = getSelectedView();
if (selectedView != null) {
info.setEnabled(selectedView.isEnabled());
}
}
@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(info);
info.setScrollable(isScrollableForAccessibility());
View selectedView = getSelectedView();
if (selectedView != null) {
info.setEnabled(selectedView.isEnabled());
}
}
@CalledByNative
private void setAccessibilityNodeInfoBooleanAttributes(AccessibilityNodeInfo node,
int virtualViewId, boolean checkable, boolean checked, boolean clickable,
boolean enabled, boolean focusable, boolean focused, boolean password,
boolean scrollable, boolean selected, boolean visibleToUser) {
node.setCheckable(checkable);
node.setChecked(checked);
node.setClickable(clickable);
node.setEnabled(enabled);
node.setFocusable(focusable);
node.setFocused(focused);
node.setPassword(password);
node.setScrollable(scrollable);
node.setSelected(selected);
node.setVisibleToUser(visibleToUser);
if (focusable) {
if (focused) {
node.addAction(AccessibilityNodeInfo.ACTION_CLEAR_FOCUS);
} else {
node.addAction(AccessibilityNodeInfo.ACTION_FOCUS);
}
}
if (mAccessibilityFocusId == virtualViewId) {
node.setAccessibilityFocused(true);
node.addAction(AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS);
} else {
node.setAccessibilityFocused(false);
node.addAction(AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS);
}
if (clickable) {
node.addAction(AccessibilityNodeInfo.ACTION_CLICK);
}
}
@Override
public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info)
{
super.onInitializeAccessibilityNodeInfo( host, info );
info.setClassName( SdkCenteredViewPager.class.getName() );
info.setScrollable( canScroll() );
if ( canScrollHorizontally( 1 ) )
{
info.addAction( AccessibilityNodeInfo.ACTION_SCROLL_FORWARD );
}
if ( canScrollHorizontally( -1 ) )
{
info.addAction( AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD );
}
}
@Override
public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info)
{
super.onInitializeAccessibilityNodeInfo( host, info );
info.setClassName( SdkCenteredViewPager.class.getName() );
info.setScrollable( canScroll() );
if ( canScrollHorizontally( 1 ) )
{
info.addAction( AccessibilityNodeInfo.ACTION_SCROLL_FORWARD );
}
if ( canScrollHorizontally( -1 ) )
{
info.addAction( AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD );
}
}
@TargetApi(14)
@Override
public void onInitializeAccessibilityNodeInfo( AccessibilityNodeInfo info ) {
super.onInitializeAccessibilityNodeInfo( info );
info.setClassName( AdapterView.class.getName() );
info.setScrollable( isScrollableForAccessibility() );
View selectedView = getSelectedView();
if ( selectedView != null ) {
info.setEnabled( selectedView.isEnabled() );
}
}
@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(info);
info.setScrollable(isScrollableForAccessibility());
View selectedView = getSelectedView();
if (selectedView != null) {
info.setEnabled(selectedView.isEnabled());
}
}
@CalledByNative
private void setAccessibilityNodeInfoBooleanAttributes(AccessibilityNodeInfo node,
int virtualViewId, boolean checkable, boolean checked, boolean clickable,
boolean enabled, boolean focusable, boolean focused, boolean password,
boolean scrollable, boolean selected, boolean visibleToUser) {
node.setCheckable(checkable);
node.setChecked(checked);
node.setClickable(clickable);
node.setEnabled(enabled);
node.setFocusable(focusable);
node.setFocused(focused);
node.setPassword(password);
node.setScrollable(scrollable);
node.setSelected(selected);
node.setVisibleToUser(visibleToUser);
if (focusable) {
if (focused) {
node.addAction(AccessibilityNodeInfo.ACTION_CLEAR_FOCUS);
} else {
node.addAction(AccessibilityNodeInfo.ACTION_FOCUS);
}
}
if (mAccessibilityFocusId == virtualViewId) {
node.setAccessibilityFocused(true);
node.addAction(AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS);
} else {
node.setAccessibilityFocused(false);
node.addAction(AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS);
}
if (clickable) {
node.addAction(AccessibilityNodeInfo.ACTION_CLICK);
}
}
@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(info);
info.setScrollable(getPageCount() > 1);
if (getCurrentPage() < getPageCount() - 1) {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_FORWARD);
}
if (getCurrentPage() > 0) {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD);
}
}
@CalledByNative
private void setAccessibilityNodeInfoBooleanAttributes(AccessibilityNodeInfo node,
int virtualViewId,
boolean checkable, boolean checked, boolean clickable,
boolean enabled, boolean focusable, boolean focused, boolean password,
boolean scrollable, boolean selected, boolean visibleToUser) {
node.setCheckable(checkable);
node.setChecked(checked);
node.setClickable(clickable);
node.setEnabled(enabled);
node.setFocusable(focusable);
node.setFocused(focused);
node.setPassword(password);
node.setScrollable(scrollable);
node.setSelected(selected);
node.setVisibleToUser(visibleToUser);
node.setMovementGranularities(
AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
| AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
| AccessibilityNodeInfo.MOVEMENT_GRANULARITY_LINE);
if (mAccessibilityFocusId == virtualViewId) {
node.setAccessibilityFocused(true);
} else {
node.setAccessibilityFocused(false);
}
}
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo paramAccessibilityNodeInfo) {
super.onInitializeAccessibilityNodeInfo(paramAccessibilityNodeInfo);
paramAccessibilityNodeInfo.setScrollable(isScrollableForAccessibility());
View localView = getSelectedView();
if (localView != null)
paramAccessibilityNodeInfo.setEnabled(localView.isEnabled());
}
@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(info);
info.setScrollable(getPageCount() > 1);
if (getCurrentPage() < getPageCount() - 1) {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_FORWARD);
}
if (getCurrentPage() > 0) {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD);
}
}
private AccessibilityNodeInfo createAccessibilityNodeInfoForNumberPicker(int left, int top,
int right, int bottom) {
AccessibilityNodeInfo info = AccessibilityNodeInfo.obtain();
info.setClassName(NumberPicker.class.getName());
info.setPackageName(mContext.getPackageName());
info.setSource(NumberPicker.this);
if (hasVirtualDecrementButton()) {
info.addChild(NumberPicker.this, VIRTUAL_VIEW_ID_DECREMENT);
}
info.addChild(NumberPicker.this, VIRTUAL_VIEW_ID_INPUT);
if (hasVirtualIncrementButton()) {
info.addChild(NumberPicker.this, VIRTUAL_VIEW_ID_INCREMENT);
}
info.setParent((View) getParentForAccessibility());
info.setEnabled(NumberPicker.this.isEnabled());
info.setScrollable(true);
final float applicationScale =
getContext().getResources().getCompatibilityInfo().applicationScale;
Rect boundsInParent = mTempRect;
boundsInParent.set(left, top, right, bottom);
boundsInParent.scale(applicationScale);
info.setBoundsInParent(boundsInParent);
info.setVisibleToUser(isVisibleToUser());
Rect boundsInScreen = boundsInParent;
int[] locationOnScreen = mTempArray;
getLocationOnScreen(locationOnScreen);
boundsInScreen.offset(locationOnScreen[0], locationOnScreen[1]);
boundsInScreen.scale(applicationScale);
info.setBoundsInScreen(boundsInScreen);
if (mAccessibilityFocusedView != View.NO_ID) {
info.addAction(AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS);
}
if (mAccessibilityFocusedView == View.NO_ID) {
info.addAction(AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS);
}
if (NumberPicker.this.isEnabled()) {
if (getWrapSelectorWheel() || getValue() < getMaxValue()) {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_FORWARD);
}
if (getWrapSelectorWheel() || getValue() > getMinValue()) {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD);
}
}
return info;
}
@Override
public AccessibilityNodeInfo createAccessibilityNodeInfo(int thumbId) {
AccessibilityNodeInfo info = null;
if (thumbId == View.NO_ID) {
// We are requested to create an AccessibilityNodeInfo describing
// this View, i.e. the root of the virtual sub-tree. Note that the
// host View has an AccessibilityNodeProvider which means that this
// provider is responsible for creating the node info for that root.
info = AccessibilityNodeInfo.obtain(MultiSlider.this);
onInitializeAccessibilityNodeInfo(info);
// Add the virtual children of the root View.
final int childCount = mThumbs.size();
for (int i = 0; i < childCount; i++) {
info.addChild(MultiSlider.this, i);
}
if (mThumbs.size() == 1) {
info.setScrollable(true);
if (Build.VERSION.SDK_INT >= 21) {
info.addAction(ACTION_SET_PROGRESS);
info.addAction(ACTION_SCROLL_BACKWARD);
info.addAction(ACTION_SCROLL_FORWARD);
} else {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD);
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_FORWARD);
}
}
} else {
// Find the view that corresponds to the given id.
Thumb thumb = mThumbs.get(thumbId);
if (thumb == null) {
return null;
}
// Obtain and initialize an AccessibilityNodeInfo with
// information about the virtual view.
info = AccessibilityNodeInfo.obtain(MultiSlider.this, thumbId);
info.setClassName(thumb.getClass().getName());
info.setParent(MultiSlider.this);
info.setSource(MultiSlider.this, thumbId);
info.setContentDescription("Multi-Slider thumb no:" + thumbId);
if (Build.VERSION.SDK_INT >= 21) {
info.addAction(ACTION_SET_PROGRESS);
if (thumb.getPossibleMax() > thumb.value) {
info.addAction(ACTION_SCROLL_BACKWARD);
}
if (thumb.getPossibleMax() > thumb.value) {
info.addAction(ACTION_SCROLL_FORWARD);
}
} else {
if (thumb.getPossibleMin() > thumb.value) {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD);
}
if (thumb.getPossibleMax() > thumb.value) {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_FORWARD);
}
}
if (thumb.getThumb() != null) {
int[] loc = new int[2];
getLocationOnScreen(loc);
Rect rect = thumb.getThumb().copyBounds();
rect.top += loc[1];
rect.left += loc[0];
rect.right += loc[0];
rect.bottom += loc[1];
info.setBoundsInScreen(rect);
//TODO somehow this resuls in [0,0][0,0]. wonder check why
//info.setBoundsInParent(rect);
}
info.setText(thumb.tag + ": " + thumb.value);
info.setEnabled(thumb.isEnabled());
if (Build.VERSION.SDK_INT >= 24) {
info.setImportantForAccessibility(true);
}
info.setVisibleToUser(true);
info.setScrollable(true);
}
return info;
}
private AccessibilityNodeInfo createAccessibilityNodeInfoForNumberPicker(int left, int top,
int right, int bottom) {
AccessibilityNodeInfo info = AccessibilityNodeInfo.obtain();
info.setClassName(NumberPicker.class.getName());
info.setPackageName(getContext().getPackageName());
info.setSource(NumberPicker.this);
if (hasVirtualDecrementButton()) {
info.addChild(NumberPicker.this, VIRTUAL_VIEW_ID_DECREMENT);
}
info.addChild(NumberPicker.this, VIRTUAL_VIEW_ID_INPUT);
if (hasVirtualIncrementButton()) {
info.addChild(NumberPicker.this, VIRTUAL_VIEW_ID_INCREMENT);
}
info.setParent((View) getParentForAccessibility());
info.setEnabled(NumberPicker.this.isEnabled());
info.setScrollable(true);
/** TODO: Figure out compat implementation for this
final float applicationScale =
getContext().getResources().getCompatibilityInfo().applicationScale;
Rect boundsInParent = mTempRect;
boundsInParent.set(left, top, right, bottom);
boundsInParent.scale(applicationScale);
info.setBoundsInParent(boundsInParent);
info.setVisibleToUser(isVisibleToUser());
Rect boundsInScreen = boundsInParent;
int[] locationOnScreen = mTempArray;
getLocationOnScreen(locationOnScreen);
boundsInScreen.offset(locationOnScreen[0], locationOnScreen[1]);
boundsInScreen.scale(applicationScale);
info.setBoundsInScreen(boundsInScreen);
*/
if (mAccessibilityFocusedView != View.NO_ID) {
info.addAction(AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS);
}
if (mAccessibilityFocusedView == View.NO_ID) {
info.addAction(AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS);
}
if (NumberPicker.this.isEnabled()) {
if (getWrapSelectorWheel() || getValue() < getMaxValue()) {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_FORWARD);
}
if (getWrapSelectorWheel() || getValue() > getMinValue()) {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD);
}
}
return info;
}
private AccessibilityNodeInfo createAccessibilityNodeInfoForNumberPicker(int left, int top,
int right, int bottom) {
AccessibilityNodeInfo info = AccessibilityNodeInfo.obtain();
info.setClassName(TextPicker.class.getName());
info.setPackageName(getContext().getPackageName());
info.setSource(TextPicker.this);
if (hasVirtualDecrementButton()) {
info.addChild(TextPicker.this, VIRTUAL_VIEW_ID_DECREMENT);
}
info.addChild(TextPicker.this, VIRTUAL_VIEW_ID_INPUT);
if (hasVirtualIncrementButton()) {
info.addChild(TextPicker.this, VIRTUAL_VIEW_ID_INCREMENT);
}
info.setParent((View) getParentForAccessibility());
info.setEnabled(TextPicker.this.isEnabled());
info.setScrollable(true);
/** TODO: Figure out compat implementation for this
final float applicationScale =
getContext().getResources().getCompatibilityInfo().applicationScale;
Rect boundsInParent = mTempRect;
boundsInParent.set(left, top, right, bottom);
boundsInParent.scale(applicationScale);
info.setBoundsInParent(boundsInParent);
info.setVisibleToUser(isVisibleToUser());
Rect boundsInScreen = boundsInParent;
int[] locationOnScreen = mTempArray;
getLocationOnScreen(locationOnScreen);
boundsInScreen.offset(locationOnScreen[0], locationOnScreen[1]);
boundsInScreen.scale(applicationScale);
info.setBoundsInScreen(boundsInScreen);
*/
if (mAccessibilityFocusedView != View.NO_ID) {
info.addAction(AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS);
}
if (mAccessibilityFocusedView == View.NO_ID) {
info.addAction(AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS);
}
if (TextPicker.this.isEnabled()) {
if (getWrapSelectorWheel() || getValue() < getMaxValue()) {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_FORWARD);
}
if (getWrapSelectorWheel() || getValue() > getMinValue()) {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD);
}
}
return info;
}