下面列出了android.widget.ExpandableListView#getPackedPositionType ( ) 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。
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
// Would prefer to have this context menu view managed internal to RecentTabsGroupView
// Unfortunately, setting either onCreateContextMenuListener or onLongClickListener
// disables the native onClick (expand/collapse) behaviour of the group view.
ExpandableListView.ExpandableListContextMenuInfo info =
(ExpandableListView.ExpandableListContextMenuInfo) menuInfo;
int type = ExpandableListView.getPackedPositionType(info.packedPosition);
int groupPosition = ExpandableListView.getPackedPositionGroup(info.packedPosition);
if (type == ExpandableListView.PACKED_POSITION_TYPE_GROUP) {
mAdapter.getGroup(groupPosition).onCreateContextMenuForGroup(menu, mActivity);
} else if (type == ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
int childPosition = ExpandableListView.getPackedPositionChild(info.packedPosition);
mAdapter.getGroup(groupPosition).onCreateContextMenuForChild(childPosition, menu,
mActivity);
}
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
// Would prefer to have this context menu view managed internal to RecentTabsGroupView
// Unfortunately, setting either onCreateContextMenuListener or onLongClickListener
// disables the native onClick (expand/collapse) behaviour of the group view.
ExpandableListView.ExpandableListContextMenuInfo info =
(ExpandableListView.ExpandableListContextMenuInfo) menuInfo;
int type = ExpandableListView.getPackedPositionType(info.packedPosition);
int groupPosition = ExpandableListView.getPackedPositionGroup(info.packedPosition);
if (type == ExpandableListView.PACKED_POSITION_TYPE_GROUP) {
mAdapter.getGroup(groupPosition).onCreateContextMenuForGroup(menu, mActivity);
} else if (type == ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
int childPosition = ExpandableListView.getPackedPositionChild(info.packedPosition);
mAdapter.getGroup(groupPosition).onCreateContextMenuForChild(childPosition, menu,
mActivity);
}
}
static ExpandableListPosition obtainPosition(long packedPosition) {
if (packedPosition == ExpandableListView.PACKED_POSITION_VALUE_NULL) {
return null;
}
ExpandableListPosition elp = getRecycledOrCreate();
elp.groupPos = ExpandableListView.getPackedPositionGroup(packedPosition);
if (ExpandableListView.getPackedPositionType(packedPosition) ==
ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
elp.type = CHILD;
elp.childPos = ExpandableListView.getPackedPositionChild(packedPosition);
} else {
elp.type = GROUP;
}
return elp;
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
// Would prefer to have this context menu view managed internal to RecentTabsGroupView
// Unfortunately, setting either onCreateContextMenuListener or onLongClickListener
// disables the native onClick (expand/collapse) behaviour of the group view.
ExpandableListView.ExpandableListContextMenuInfo info =
(ExpandableListView.ExpandableListContextMenuInfo) menuInfo;
int type = ExpandableListView.getPackedPositionType(info.packedPosition);
int groupPosition = ExpandableListView.getPackedPositionGroup(info.packedPosition);
if (type == ExpandableListView.PACKED_POSITION_TYPE_GROUP) {
mAdapter.getGroup(groupPosition).onCreateContextMenuForGroup(menu, mActivity);
} else if (type == ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
int childPosition = ExpandableListView.getPackedPositionChild(info.packedPosition);
mAdapter.getGroup(groupPosition).onCreateContextMenuForChild(childPosition, menu,
mActivity);
}
}
@Override
public void onCreateContextMenu(@NonNull ContextMenu menu, @NonNull View v,
ContextMenuInfo menuInfo) {
menu.add(Menu.NONE, 0, Menu.NONE, R.string.context_action_shortcut);
menu.add(Menu.NONE, 1, Menu.NONE, R.string.context_action_launch);
ExpandableListContextMenuInfo info = (ExpandableListContextMenuInfo) menuInfo;
ExpandableListView list = getView().findViewById(R.id.expandableListView1);
switch (ExpandableListView.getPackedPositionType(info.packedPosition)) {
case ExpandableListView.PACKED_POSITION_TYPE_CHILD:
MyActivityInfo activity = (MyActivityInfo) list.getExpandableListAdapter().getChild(ExpandableListView.getPackedPositionGroup(info.packedPosition), ExpandableListView.getPackedPositionChild(info.packedPosition));
menu.setHeaderIcon(activity.icon);
menu.setHeaderTitle(activity.name);
menu.add(Menu.NONE, 2, Menu.NONE, R.string.context_action_edit);
break;
case ExpandableListView.PACKED_POSITION_TYPE_GROUP:
MyPackageInfo pack = (MyPackageInfo) list.getExpandableListAdapter().getGroup(ExpandableListView.getPackedPositionGroup(info.packedPosition));
menu.setHeaderIcon(pack.icon);
menu.setHeaderTitle(pack.name);
break;
}
super.onCreateContextMenu(menu, v, menuInfo);
}
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
int itemType = ExpandableListView.getPackedPositionType(id);
int childPosition;
int groupPosition;
if ( itemType == ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
childPosition = ExpandableListView.getPackedPositionChild(id);
groupPosition = ExpandableListView.getPackedPositionGroup(id);
final Item item = (Item) mAdapter.getChild(groupPosition, childPosition);
if (item instanceof AppItem) {
showAppDetails(((AppItem) item).info);
return true;
} else if (item instanceof BookmarkItem) {
removeBookark((BookmarkItem)item);
return true;
} else {
return false;
}
} else if(itemType == ExpandableListView.PACKED_POSITION_TYPE_GROUP) {
groupPosition = ExpandableListView.getPackedPositionGroup(id);
return false;
} else {
return false;
}
}
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
int itemType = ExpandableListView.getPackedPositionType(id);
int childPosition;
int groupPosition;
if ( itemType == ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
childPosition = ExpandableListView.getPackedPositionChild(id);
groupPosition = ExpandableListView.getPackedPositionGroup(id);
final Item item = (Item) mAdapter.getChild(groupPosition, childPosition);
if (item instanceof AppItem) {
showAppDetails(((AppItem) item).info);
return true;
} else if (item instanceof BookmarkItem) {
removeBookark((BookmarkItem)item);
return true;
} else {
return false;
}
} else if(itemType == ExpandableListView.PACKED_POSITION_TYPE_GROUP) {
groupPosition = ExpandableListView.getPackedPositionGroup(id);
return false;
} else {
return false;
}
}
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
int itemType = ExpandableListView.getPackedPositionType(id);
int childPosition;
int groupPosition;
if ( itemType == ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
childPosition = ExpandableListView.getPackedPositionChild(id);
groupPosition = ExpandableListView.getPackedPositionGroup(id);
final Item item = (Item) mAdapter.getChild(groupPosition, childPosition);
if (item instanceof AppItem) {
showAppDetails(((AppItem) item).info);
return true;
} else if (item instanceof BookmarkItem) {
removeBookark((BookmarkItem)item);
return true;
} else {
return false;
}
} else if(itemType == ExpandableListView.PACKED_POSITION_TYPE_GROUP) {
groupPosition = ExpandableListView.getPackedPositionGroup(id);
return false;
} else {
return false;
}
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
ExpandableListView.ExpandableListContextMenuInfo info = (ExpandableListView.ExpandableListContextMenuInfo) menuInfo;
MenuInflater inflater = getSherlockActivity().getMenuInflater();
int type = ExpandableListView.getPackedPositionType(info.packedPosition);
if (type == ExpandableListView.PACKED_POSITION_TYPE_GROUP) {
inflater.inflate(R.menu.novel_details_volume_context_menu, menu);
} else if (type == ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
inflater.inflate(R.menu.novel_details_chapter_context_menu, menu);
}
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
ExpandableListView.ExpandableListContextMenuInfo info = (ExpandableListView.ExpandableListContextMenuInfo) menuInfo;
MenuInflater inflater = getMenuInflater();
int type = ExpandableListView.getPackedPositionType(info.packedPosition);
if (type == ExpandableListView.PACKED_POSITION_TYPE_GROUP) {
inflater.inflate(R.menu.novel_details_volume_context_menu, menu);
} else if (type == ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
inflater.inflate(R.menu.novel_details_chapter_context_menu, menu);
}
}
/**
* {@inheritDoc}
*
* @see android.app.Activity#onCreateContextMenu(android.view.ContextMenu, android.view.View, android.view.ContextMenu.ContextMenuInfo)
*/
@Override
public void onCreateContextMenu(final ContextMenu menu, final View v, final ContextMenuInfo menuInfo) {
if (menuInfo instanceof ExpandableListContextMenuInfo) {
final ExpandableListContextMenuInfo cmi = (ExpandableListContextMenuInfo) menuInfo;
final int type = ExpandableListView.getPackedPositionType(cmi.packedPosition);
final int groupPosition = ExpandableListView.getPackedPositionGroup(cmi.packedPosition);
final int childPosition = ExpandableListView.getPackedPositionChild(cmi.packedPosition);
// System.out.println("OPDSActivity.onCreateContextMenu(): " + type + ", " + groupPosition + ", "
// + childPosition);
switch (type) {
case ExpandableListView.PACKED_POSITION_TYPE_NULL:
onCreateContextMenu(menu);
return;
case ExpandableListView.PACKED_POSITION_TYPE_GROUP:
final Entry entry = getController().adapter.getGroup(groupPosition);
if (entry instanceof Feed) {
onCreateFeedContextMenu(menu, (Feed) entry);
} else if (entry instanceof Book) {
onCreateBookContextMenu(menu, (Book) entry);
}
return;
case ExpandableListView.PACKED_POSITION_TYPE_CHILD:
final Entry group = getController().adapter.getGroup(groupPosition);
final Object child = getController().adapter.getChild(groupPosition, childPosition);
if (child instanceof Link) {
onCreateLinkContextMenu(menu, (Book) group, (Link) child);
} else if (child instanceof Feed) {
onCreateFacetContextMenu(menu, (Feed) group, (Feed) child);
}
return;
}
}
onCreateContextMenu(menu);
}
@Override
public int canFling(ListView v, int pos)
{
long packedPos = mExpandableListView.getExpandableListPosition(pos);
if (packedPos != ExpandableListView.PACKED_POSITION_VALUE_NULL
&& ExpandableListView.getPackedPositionType(packedPos) == ExpandableListView.PACKED_POSITION_TYPE_CHILD)
{
return FlingDetector.RIGHT_FLING | FlingDetector.LEFT_FLING;
}
else
{
return 0;
}
}
public static ViewNode getViewNode(View view, int viewIndex) {
int viewPosition = getViewPosition(view, viewIndex);
ViewParent parentObject = view.getParent();
if (parentObject == null) {
return null;
}
if (!WindowHelper.isDecorView(view.getClass()) || (parentObject instanceof View)) {
if (parentObject instanceof View) {
View parentView = (View) parentObject;
StringBuilder opx = new StringBuilder();
StringBuilder px = new StringBuilder();
String viewName = ViewUtil.getCanonicalName(view.getClass());
Object fragment = null;
String listPos = null;
// 处理嵌套场景，如果父 View 是列表类型控件，将父 View 的列表位置传递给非列表类型子控件; 列表类型子控件则直接用自身位置。
ViewParent parent = parentView.getParent();
if (parent instanceof View) {
View listParentView = (View) parent;
if (sViewCache == null) {
sViewCache = new SparseArray<String>();
}
String parentPos = (String) sViewCache.get(listParentView.hashCode());
if (!TextUtils.isEmpty(parentPos)) {
listPos = parentPos;
}
}
if (parentView instanceof ExpandableListView) {
ExpandableListView listParent = (ExpandableListView) parentView;
long elp = listParent.getExpandableListPosition(viewPosition);
if (ExpandableListView.getPackedPositionType(elp) != 2) {
int groupIdx = ExpandableListView.getPackedPositionGroup(elp);
int childIdx = ExpandableListView.getPackedPositionChild(elp);
if (childIdx != -1) {
listPos = String.format(Locale.CHINA, "%d:%d", groupIdx, childIdx);
px.append(opx).append("/ELVG[").append(groupIdx).append("]/ELVC[-]/").append(viewName).append("[0]");
opx.append("/ELVG[").append(groupIdx).append("]/ELVC[").append(childIdx).append("]/").append(viewName).append("[0]");
} else {
listPos = String.format(Locale.CHINA, "%d", groupIdx);
px.append(opx).append("/ELVG[-]/").append(viewName).append("[0]");
opx.append("/ELVG[").append(groupIdx).append("]/").append(viewName).append("[0]");
}
} else if (viewPosition < listParent.getHeaderViewsCount()) {
opx.append("/ELH[").append(viewPosition).append("]/").append(viewName).append("[0]");
px.append("/ELH[").append(viewPosition).append("]/").append(viewName).append("[0]");
} else {
int footerIndex = viewPosition - (listParent.getCount() - listParent.getFooterViewsCount());
opx.append("/ELF[").append(footerIndex).append("]/").append(viewName).append("[0]");
px.append("/ELF[").append(footerIndex).append("]/").append(viewName).append("[0]");
}
} else if (ViewUtil.isListView(parentView)) {
listPos = String.format(Locale.CHINA, "%d", viewPosition);
px.append(opx).append("/").append(viewName).append("[-]");
opx.append("/").append(viewName).append("[").append(listPos).append("]");
} else if (ViewUtil.instanceOfSupportSwipeRefreshLayout(parentView)) {
opx.append("/").append(viewName).append("[0]");
px.append("/").append(viewName).append("[0]");
} else if ((fragment = ViewUtil.instanceOfFragmentRootView(parentView, view)) != null) {
viewName = ViewUtil.getCanonicalName(fragment.getClass());
opx.append("/").append(viewName).append("[0]");
px.append("/").append(viewName).append("[0]");
} else {
viewPosition = VisualUtil.getChildIndex(parentObject, view);
opx.append("/").append(viewName).append("[").append(viewPosition).append("]");
px.append("/").append(viewName).append("[").append(viewPosition).append("]");
}
if (WindowHelper.isDecorView(parentView.getClass())) {
if (opx.length() > 0) {
opx.deleteCharAt(0);
}
if (px.length() > 0) {
px.deleteCharAt(0);
}
}
if (!TextUtils.isEmpty(listPos)) {
if (sViewCache == null) {
sViewCache = new SparseArray<String>();
}
sViewCache.put(parentView.hashCode(), listPos);
}
ViewNode viewNode = getViewContentAndType(view);
return new ViewNode(listPos, opx.toString(), px.toString(), viewNode.getViewContent(), viewNode.getViewType());
}
}
return null;
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenu.ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
ExpandableListView.ExpandableListContextMenuInfo info =
(ExpandableListView.ExpandableListContextMenuInfo) menuInfo;
int type = ExpandableListView.getPackedPositionType(info.packedPosition);
int groupPosition = ExpandableListView.getPackedPositionGroup(info.packedPosition);
int childPosition = ExpandableListView.getPackedPositionChild(info.packedPosition);
if (type == ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
Object o = getAdapter().getChild(groupPosition, childPosition);
if (o == null) return;
final LeadUser leadUser = ((LeadUser) o);
final List<MenuListDialog> list = new ArrayList<>();
list.add(new MenuListDialog(App.getInstance().getString(R.string.list_forums), () -> {
if (leadUser.isAllForumsOwner()) {
MainActivity.showListFragment(new ForumBrickInfo().getName(), null);
} else {
CharSequence[] forumTitles = new CharSequence[leadUser.getForums().size()];
int i = 0;
for (Forum f : leadUser.getForums()) {
forumTitles[i++] = f.getTitle();
}
Context context = getContext();
if (context != null)
new MaterialDialog.Builder(context)
.title(R.string.forums)
.items(forumTitles)
.itemsCallbackSingleChoice(-1, (dialog, view, i1, forumTitles1) -> {
ForumTopicsListFragment.showForumTopicsList(
leadUser.getForums().get(i1).getId(), leadUser.getForums().get(i1).getTitle());
return true; // allow selection
})
.show();
}
}));
ForumUser.onCreateContextMenu(getContext(), list, leadUser.getId().toString(), leadUser.getNick().toString());
ExtUrl.showContextDialog(getContext(), null, list);
}
}
@Override
public boolean onContextItemSelected(MenuItem item) {
ExpandableListContextMenuInfo info = (ExpandableListContextMenuInfo) item.getMenuInfo();
ExpandableListView list = getView().findViewById(R.id.expandableListView1);
switch (ExpandableListView.getPackedPositionType(info.packedPosition)) {
case ExpandableListView.PACKED_POSITION_TYPE_CHILD:
MyActivityInfo activity = (MyActivityInfo) list.getExpandableListAdapter().getChild(ExpandableListView.getPackedPositionGroup(info.packedPosition), ExpandableListView.getPackedPositionChild(info.packedPosition));
switch (item.getItemId()) {
case 0:
LauncherIconCreator.createLauncherIcon(getActivity(), activity);
break;
case 1:
LauncherIconCreator.launchActivity(getActivity(), activity.component_name);
break;
case 2:
DialogFragment dialog = new ShortcutEditDialogFragment();
Bundle args = new Bundle();
args.putParcelable("activity", activity.component_name);
dialog.setArguments(args);
dialog.show(getFragmentManager(), "ShortcutEditor");
break;
}
break;
case ExpandableListView.PACKED_POSITION_TYPE_GROUP:
MyPackageInfo pack = (MyPackageInfo) list.getExpandableListAdapter().getGroup(ExpandableListView.getPackedPositionGroup(info.packedPosition));
switch (item.getItemId()) {
case 0:
boolean success = LauncherIconCreator.createLauncherIcon(getActivity(), pack);
Toast.makeText(getActivity(), getString(R.string.error_no_default_activity), Toast.LENGTH_LONG).show();
break;
case 1:
PackageManager pm = getActivity().getPackageManager();
Intent intent = pm.getLaunchIntentForPackage(pack.package_name);
if (intent != null) {
Toast.makeText(getActivity(), String.format(getText(R.string.starting_application).toString(), pack.name), Toast.LENGTH_LONG).show();
getActivity().startActivity(intent);
} else {
Toast.makeText(getActivity(), getString(R.string.error_no_default_activity), Toast.LENGTH_LONG).show();
}
break;
}
}
return super.onContextItemSelected(item);
}
@Override
public boolean onFlingEnd(ListView v, View listElement, int pos, int direction)
{
long packedPos = mExpandableListView.getExpandableListPosition(pos);
if (ExpandableListView.getPackedPositionType(packedPos) == ExpandableListView.PACKED_POSITION_TYPE_CHILD)
{
ExpandableListAdapter listAdapter = mExpandableListView.getExpandableListAdapter();
Cursor cursor = (Cursor) listAdapter.getChild(ExpandableListView.getPackedPositionGroup(packedPos),
ExpandableListView.getPackedPositionChild(packedPos));
if (cursor != null)
{
long instanceId = cursor.getLong(cursor.getColumnIndex(Instances._ID));
boolean closed = cursor.getLong(cursor.getColumnIndex(Instances.IS_CLOSED)) > 0;
String title = cursor.getString(cursor.getColumnIndex(Instances.TITLE));
// TODO: use the instance URI once we support recurrence
Uri taskUri = ContentUris.withAppendedId(Instances.getContentUri(mAuthority), instanceId);
if (direction == FlingDetector.RIGHT_FLING)
{
if (closed)
{
removeTask(taskUri, title);
// we do not know for sure if the task has been removed since the user is asked for confirmation first, so return false
return false;
}
else
{
return setCompleteTask(taskUri, title, true);
}
}
else if (direction == FlingDetector.LEFT_FLING)
{
if (closed)
{
return setCompleteTask(taskUri, title, false);
}
else
{
openTaskEditor(taskUri, cursor.getString(cursor.getColumnIndex(Instances.ACCOUNT_TYPE)));
return false;
}
}
}
}
return false;
}