下面列出了android.view.accessibility.AccessibilityNodeInfo#addChild ( ) 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。
private AccessibilityNodeInfo onProvideAutofillCompatModeAccessibilityNodeInfo() {
final AccessibilityNodeInfo node = AccessibilityNodeInfo.obtain();
final String packageName = getContext().getPackageName();
node.setPackageName(packageName);
node.setClassName(getClass().getName());
final int childrenSize = mVirtualViews.size();
for (int i = 0; i < childrenSize; i++) {
final Item item = mVirtualViews.valueAt(i);
if (DEBUG) {
Log.d(TAG, "Adding new A11Y child with id " + item.id + ": " + item);
}
node.addChild(this, item.id);
}
return node;
}
private AccessibilityNodeInfo onProvideAutofillCompatModeAccessibilityNodeInfo() {
final AccessibilityNodeInfo node = AccessibilityNodeInfo.obtain();
final String packageName = getContext().getPackageName();
node.setPackageName(packageName);
node.setClassName(getClass().getName());
final int childrenSize = mVirtualViews.size();
for (int i = 0; i < childrenSize; i++) {
final Item item = mVirtualViews.valueAt(i);
if (DEBUG) {
Log.d(TAG, "Adding new A11Y child with id " + item.id + ": " + item);
}
node.addChild(this, item.id);
}
return node;
}
private AccessibilityNodeInfo createNodeForHost(int rootId) {
// Since we don't want the parent to be focusable, but we can't remove
// actions from a node, copy over the necessary fields.
final AccessibilityNodeInfo result = AccessibilityNodeInfo.obtain(mView);
final AccessibilityNodeInfo source = AccessibilityNodeInfo.obtain(mView);
mView.onInitializeAccessibilityNodeInfo(source);
// Copy over parent and screen bounds.
Rect rect = new Rect();
source.getBoundsInParent(rect);
result.setBoundsInParent(rect);
source.getBoundsInScreen(rect);
result.setBoundsInScreen(rect);
// Set up the parent view, if applicable.
final ViewParent parent = mView.getParentForAccessibility();
if (parent instanceof View) {
result.setParent((View) parent);
}
// Populate the minimum required fields.
result.setVisibleToUser(source.isVisibleToUser());
result.setEnabled(source.isEnabled());
result.setPackageName(source.getPackageName());
result.setClassName(source.getClassName());
// Add the Chrome root node.
if (isFrameInfoInitialized()) {
result.addChild(mView, rootId);
}
return result;
}
private void addChildrenForAccessibility(AccessibilityNodeInfo info, ViewGroup v) {
final int childCount = v.getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = v.getChildAt(i);
if (includeChildForAccessibility(child)) {
info.addChild(child);
}
}
}
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;
}
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
// 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(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);
Rect boundsInParent = mTempRect;
boundsInParent.set(left, top, right, bottom);
info.setBoundsInParent(boundsInParent);
info.setVisibleToUser(getVisibility() == View.VISIBLE);
Rect boundsInScreen = boundsInParent;
int[] locationOnScreen = mTempArray;
getLocationOnScreen(locationOnScreen);
boundsInScreen.offset(locationOnScreen[0], locationOnScreen[1]);
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;
}
@CalledByNative
private void addAccessibilityNodeInfoChild(AccessibilityNodeInfo node, int childId) {
node.addChild(mView, childId);
}
@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;
}
@CalledByNative
private void addAccessibilityNodeInfoChild(AccessibilityNodeInfo node, int child_id) {
node.addChild(mView, child_id);
}
@CalledByNative
private void addAccessibilityNodeInfoChild(AccessibilityNodeInfo node, int child_id) {
node.addChild(mView, child_id);
}