/** Provide the cursor for the list view. */ public void setListAdapter(ExpandableListAdapter adapter) { boolean hadAdapter = mAdapter != null; mAdapter = adapter; if (mList != null) { mList.setAdapter(adapter); if (!mListShown && !hadAdapter) { // The list was hidden, and previously didn't have an // adapter. It is now time to show it. setListShown(true, getView().getWindowToken() != null); } } } /** * Set the currently selected list item to the specified * position with the adapter's data */ public void setSelection(int position) { ensureList(); mList.setSelection(position); } public long getSelectedPosition() { ensureList(); return mList.getSelectedPosition(); } public long getSelectedId() { ensureList(); return mList.getSelectedId(); } public ExpandableListView getExpandableListView() { ensureList(); return mList; } /** * The default content for a ListFragment has a TextView that can * be shown when the list is empty. If you would like to have it * shown, call this method to supply the text it should use. */ public void setEmptyText(CharSequence text) { ensureList(); if (mStandardEmptyView == null) { throw new IllegalStateException("Can't be used with a custom content view"); } mStandardEmptyView.setText(text); if (!mSetEmptyText) { mList.setEmptyView(mStandardEmptyView); mSetEmptyText = true; } } /** * Control whether the list is being displayed. You can make it not * displayed if you are waiting for the initial data to show in it. During * this time an indeterminant progress indicator will be shown instead. * <p/> * <p>Applications do not normally need to use this themselves. The default * behavior of ListFragment is to start with the list not being shown, only * showing it once an adapter is given with {@link #setListAdapter(ListAdapter)}. * If the list at that point had not been shown, when it does get shown * it will be do without the user ever seeing the hidden state. * @param shown If true, the list view is shown; if false, the progress * indicator. The initial value is true. */ public void setListShown(boolean shown) { setListShown(shown, true); } /** * Like {@link #setListShown(boolean)}, but no animation is used when * transitioning from the previous state. */ public void setListShownNoAnimation(boolean shown) { setListShown(shown, false); } /** * Control whether the list is being displayed. You can make it not * displayed if you are waiting for the initial data to show in it. During * this time an indeterminant progress indicator will be shown instead. * @param shown If true, the list view is shown; if false, the progress * indicator. The initial value is true. * @param animate If true, an animation will be used to transition to the * new state. */ private void setListShown(boolean shown, boolean animate) { ensureList(); if (mListShown == shown) { return; } mListShown = shown; if (mListContainer != null) { if (shown) { if (animate) { mListContainer.startAnimation(AnimationUtils.loadAnimation(getActivity(), android.R.anim.fade_in)); } mListContainer.setVisibility(View.VISIBLE); } else { if (animate) { mListContainer.startAnimation(AnimationUtils.loadAnimation(getActivity(), android.R.anim.fade_out)); } mListContainer.setVisibility(View.GONE); } } } /** Get the ListAdapter associated with this activity's ListView. */ public ExpandableListAdapter getExpandableListAdapter() { return mAdapter; } private void ensureList() { if (mList != null) { return; } View root = getView(); if (root == null) { throw new IllegalStateException("Content view not yet created"); } if (root instanceof ExpandableListView) { mList = (ExpandableListView) root; } else { mStandardEmptyView = (TextView) root.findViewById(INTERNAL_EMPTY_ID); if (mStandardEmptyView == null) { mEmptyView = root.findViewById(android.R.id.empty); } mListContainer = root.findViewById(INTERNAL_LIST_CONTAINER_ID); View rawListView = root.findViewById(android.R.id.list); if (!(rawListView instanceof ExpandableListView)) { if (rawListView == null) { throw new RuntimeException("Your content must have a ExpandableListView whose id attribute is " + "'android.R.id.list'"); } throw new RuntimeException("Content has view with id attribute 'android.R.id.list' " + "that is not a ExpandableListView class"); } mList = (ExpandableListView) rawListView; if (mEmptyView != null) { mList.setEmptyView(mEmptyView); } } mListShown = true; mList.setOnItemClickListener(mOnClickListener); if (mAdapter != null) { setListAdapter(mAdapter); } else { // We are starting without an adapter, so assume we won't // have our data right away and start with the progress indicator.