public void removeView(View view) {
removeViewInternal(view);
requestLayout();
invalidate(true);
}
/**
* Removes a view during layout. This is useful if in your onLayout() method,
* you need to remove more views.
*
* @param view the view to remove from the group
*/
public void removeViewInLayout(View view) {
removeViewInternal(view);
}
/**
* Removes a range of views during layout. This is useful if in your onLayout() method,
* you need to remove more views.
*
* @param start the index of the first view to remove from the group
* @param count the number of views to remove from the group
*/
public void removeViewsInLayout(int start, int count) {
removeViewsInternal(start, count);
}
/**
* Removes the view at the specified position in the group.
*
* @param index the position in the group of the view to remove
*/
public void removeViewAt(int index) {
removeViewInternal(index, getChildAt(index));
requestLayout();
invalidate(true);
}
/**
* Removes the specified range of views from the group.
*
* @param start the first position in the group of the range of views to remove
* @param count the number of views to remove
*/
public void removeViews(int start, int count) {
removeViewsInternal(start, count);
requestLayout();
invalidate(true);
}
private void removeViewInternal(View view) {
final int index = indexOfChild(view);
if (index >= 0) {
removeViewInternal(index, view);
}
}
private void removeViewInternal(int index, View view) {
if (mTransition != null) {
(this, view);
}
boolean clearChildFocus = false;
if (view == mFocused) {
();
clearChildFocus = true;
}
if (() != null ||
(mTransitioningViews != null && (view))) {
addDisappearingView(view);
} else if ( != null) {
();
}
onViewRemoved(view);
needGlobalAttributesUpdate(false);
removeFromArray(index);
if (clearChildFocus) {
clearChildFocus(view);
}
}
/**
* Sets the LayoutTransition object for this ViewGroup. If the LayoutTransition object is
* not null, changes in layout which occur because of children being added to or removed from
* the ViewGroup will be animated according to the animations defined in that LayoutTransition
* object. By default, the transition object is null (so layout changes are not animated).
*
* @param transition The LayoutTransition object that will animated changes in layout. A value
* of <code>null</code> means no transition will run on layout changes.
* @attr ref #ViewGroup_animateLayoutChanges
*/
public void setLayoutTransition(LayoutTransition transition) {
if (mTransition != null) {
(mLayoutTransitionListener);
}
mTransition = transition;
if (mTransition != null) {
(mLayoutTransitionListener);
}
}
/**
* Gets the LayoutTransition object for this ViewGroup. If the LayoutTransition object is
* not null, changes in layout which occur because of children being added to or removed from
* the ViewGroup will be animated according to the animations defined in that LayoutTransition
* object. By default, the transition object is null (so layout changes are not animated).
*
* @return LayoutTranstion The LayoutTransition object that will animated changes in layout.
* A value of <code>null</code> means no transition will run on layout changes.
*/
public LayoutTransition getLayoutTransition() {
return mTransition;
}
private void removeViewsInternal(int start, int count) {
final View focused = mFocused;
final boolean detach = mAttachInfo != null;
View clearChildFocus = null;
final View[] children = mChildren;
final int end = start + count;
for (int i = start; i < end; i++) {
final View view = children[i];
if (mTransition != null) {
(this, view);
}
if (view == focused) {
();
clearChildFocus = view;
}
if (() != null ||
(mTransitioningViews != null && (view))) {
addDisappearingView(view);
} else if (detach) {
();
}
needGlobalAttributesUpdate(false);
onViewRemoved(view);
}
removeFromArray(start, count);
if (clearChildFocus != null) {
clearChildFocus(clearChildFocus);
}
}
/**
* Call this method to remove all child views from the
* ViewGroup.
*/
public void removeAllViews() {
removeAllViewsInLayout();
requestLayout();
invalidate(true);
}
/**
* Called by a ViewGroup subclass to remove child views from itself,
* when it must first know its size on screen before it can calculate how many
* child views it will render. An example is a Gallery or a ListView, which
* may "have" 50 children, but actually only render the number of children
* that can currently fit inside the object on screen. Do not call
* this method unless you are extending ViewGroup and understand the
* view measuring and layout pipeline.
*/
public void removeAllViewsInLayout() {
final int count = mChildrenCount;
if (count <= 0) {
return;
}
final View[] children = mChildren;
mChildrenCount = 0;
final View focused = mFocused;
final boolean detach = mAttachInfo != null;
View clearChildFocus = null;
needGlobalAttributesUpdate(false);
for (int i = count - 1; i >= 0; i--) {
final View view = children[i];
if (mTransition != null) {
(this, view);
}
if (view == focused) {
();
clearChildFocus = view;
}
if (() != null ||
(mTransitioningViews != null && (view))) {
addDisappearingView(view);
} else if (detach) {
();
}
onViewRemoved(view);
= null;
children[i] = null;
}
if (clearChildFocus != null) {
clearChildFocus(clearChildFocus);
}
}
/**
* Finishes the removal of a detached view. This method will dispatch the detached from
* window event and notify the hierarchy change listener.
*
* @param child the child to be definitely removed from the view hierarchy
* @param animate if true and the view has an animation, the view is placed in the
* disappearing views list, otherwise, it is detached from the window
*
* @see #attachViewToParent(View, int, )
* @see #detachAllViewsFromParent()
* @see #detachViewFromParent(View)
* @see #detachViewFromParent(int)
*/
protected void removeDetachedView(View child, boolean animate) {
if (mTransition != null) {
(this, child);
}
if (child == mFocused) {
();
}
if ((animate && () != null) ||
(mTransitioningViews != null && (child))) {
addDisappearingView(child);
} else if ( != null) {
();
}
onViewRemoved(child);
}