Java Code Examples for android.widget.listview#getLastVisiblePosition()
The following examples show how to use
android.widget.listview#getLastVisiblePosition() .
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Example 1
Source File: UiUtil.java From android-file-chooser with Apache License 2.0 | 6 votes |
public static void ensureVisible(@Nullable ListView listView, int pos) { if (listView == null || listView.getAdapter() == null) { return; } if (pos < 0 || pos >= listView.getAdapter().getCount()) { return; } int first = listView.getFirstVisiblePosition(); int last = listView.getLastVisiblePosition(); if (pos < first) { listView.setSelection(pos); return; } if (pos >= last) { listView.setSelection(1 + pos - (last - first)); } }
Example 2
Source File: FsBrowserRecord.java From edslite with GNU General Public License v2.0 | 6 votes |
public static RowViewInfo getCurrentRowViewInfo(FileListViewFragment host, Object item) { if(host == null || host.isRemoving() || !host.isResumed()) return null; ListView list = host.getListView(); if(list == null) return null; int start = list.getFirstVisiblePosition(); for(int i=start, j=list.getLastVisiblePosition();i<=j;i++) if(j<list.getCount() && item == list.getItemAtPosition(i)) { RowViewInfo rvi = new RowViewInfo(); rvi.view = list.getChildAt(i-start); rvi.position = i; rvi.listView = list; return rvi; } return null; }
Example 3
Source File: GitHistoryActivity.java From APDE with GNU General Public License v2.0 | 6 votes |
public void selectItem(int num) { final ListView commitList = (ListView) getView().findViewById(R.id.git_history_commit_list); selectedItem = num; int selection = num - commitList.getFirstVisiblePosition(); //Keep the selected commit on screen... with a little bit of breathing room if (num < commitList.getFirstVisiblePosition() + 2) { commitList.setSelection(num == 0 ? num : num - 1); } else if (num > commitList.getLastVisiblePosition() - 2) { commitList.setSelection(num == commitList.getCount() - 1 ? num : num + 1); } for (int i = 0; i < commitList.getCount(); i ++) { View child = commitList.getChildAt(i); if (child != null) { child.setBackgroundColor(selection == i ? getResources().getColor(R.color.holo_select) : getResources().getColor(android.R.color.transparent)); } } }
Example 4
Source File: MessageActivity.java From sctalk with Apache License 2.0 | 6 votes |
private void onMsgRecv(MessageEntity entity) { logger.d("message_activity#onMsgRecv"); imService.getUnReadMsgManager().ackReadMsg(entity); logger.d("chat#start pushList"); pushList(entity); ListView lv = lvPTR.getRefreshableView(); if (lv != null) { if (lv.getLastVisiblePosition() < adapter.getCount()) { textView_new_msg_tip.setVisibility(View.VISIBLE); } else { scrollToBottomListItem(); } } }
Example 5
Source File: AppMenu.java From AndroidChromium with Apache License 2.0 | 5 votes |
/** * Notifies the menu that the contents of the menu item specified by {@code menuRowId} have * changed. This should be called if icons, titles, etc. are changing for a particular menu * item while the menu is open. * @param menuRowId The id of the menu item to change. This must be a row id and not a child * id. */ public void menuItemContentChanged(int menuRowId) { // Make sure we have all the valid state objects we need. if (mAdapter == null || mMenu == null || mPopup == null || mPopup.getListView() == null) { return; } // Calculate the item index. int index = -1; int menuSize = mMenu.size(); for (int i = 0; i < menuSize; i++) { if (mMenu.getItem(i).getItemId() == menuRowId) { index = i; break; } } if (index == -1) return; // Check if the item is visible. ListView list = mPopup.getListView(); int startIndex = list.getFirstVisiblePosition(); int endIndex = list.getLastVisiblePosition(); if (index < startIndex || index > endIndex) return; // Grab the correct View. View view = list.getChildAt(index - startIndex); if (view == null) return; // Cause the Adapter to re-populate the View. list.getAdapter().getView(index, view, list); }
Example 6
Source File: ListViewUtil.java From NIM_Android_UIKit with MIT License | 5 votes |
public static Object getViewHolderByIndex(ListView listView, int index) { int firstVisibleFeedPosition = listView.getFirstVisiblePosition() - listView.getHeaderViewsCount(); int lastVisibleFeedPosition = listView.getLastVisiblePosition() - listView.getHeaderViewsCount(); //只有获取可见区域的 if (index >= firstVisibleFeedPosition && index <= lastVisibleFeedPosition) { View view = listView.getChildAt(index - firstVisibleFeedPosition); Object tag = view.getTag(); return tag; } else { return null; } }
Example 7
Source File: ListViewUtil.java From NIM_Android_UIKit with MIT License | 5 votes |
public static boolean isLastMessageVisible(ListView messageListView) { if (messageListView == null || messageListView.getAdapter() == null) { return false; } if (messageListView.getLastVisiblePosition() >= messageListView.getAdapter().getCount() - 1 - messageListView.getFooterViewsCount()) { return true; } else { return false; } }
Example 8
Source File: DataList.java From trekarta with GNU General Public License v3.0 | 5 votes |
@Override public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) { ListView listView = getListView(); int count = listView.getCheckedItemCount(); mode.setTitle(getResources().getQuantityString(R.plurals.itemsSelected, count, count)); // Update (redraw) list item view int start = listView.getFirstVisiblePosition(); for (int i = start, j = listView.getLastVisiblePosition(); i <= j; i++) { if (position == i) { View view = listView.getChildAt(i - start); listView.getAdapter().getView(i, view, listView); break; } } }
Example 9
Source File: UARTLogFragment.java From Android-nRF-Toolbox with BSD 3-Clause "New" or "Revised" License | 5 votes |
@Override public void onSaveInstanceState(@NonNull final Bundle outState) { super.onSaveInstanceState(outState); // Save the last log list view scroll position final ListView list = getListView(); final boolean scrolledToBottom = list.getCount() > 0 && list.getLastVisiblePosition() == list.getCount() - 1; outState.putInt(SIS_LOG_SCROLL_POSITION, scrolledToBottom ? LOG_SCROLLED_TO_BOTTOM : list.getFirstVisiblePosition()); }
Example 10
Source File: AppMenu.java From 365browser with Apache License 2.0 | 5 votes |
/** * Notifies the menu that the contents of the menu item specified by {@code menuRowId} have * changed. This should be called if icons, titles, etc. are changing for a particular menu * item while the menu is open. * @param menuRowId The id of the menu item to change. This must be a row id and not a child * id. */ public void menuItemContentChanged(int menuRowId) { // Make sure we have all the valid state objects we need. if (mAdapter == null || mMenu == null || mPopup == null || mPopup.getListView() == null) { return; } // Calculate the item index. int index = -1; int menuSize = mMenu.size(); for (int i = 0; i < menuSize; i++) { if (mMenu.getItem(i).getItemId() == menuRowId) { index = i; break; } } if (index == -1) return; // Check if the item is visible. ListView list = mPopup.getListView(); int startIndex = list.getFirstVisiblePosition(); int endIndex = list.getLastVisiblePosition(); if (index < startIndex || index > endIndex) return; // Grab the correct View. View view = list.getChildAt(index - startIndex); if (view == null) return; // Cause the Adapter to re-populate the View. list.getAdapter().getView(index, view, list); }
Example 11
Source File: ConversationFragment.java From Pix-Art-Messenger with GNU General Public License v3.0 | 5 votes |
private ScrollState getScrollPosition() { final ListView listView = this.binding == null ? null : this.binding.messagesView; if (listView == null || listView.getCount() == 0 || listView.getLastVisiblePosition() == listView.getCount() - 1) { return null; } else { final int pos = listView.getFirstVisiblePosition(); final View view = listView.getChildAt(0); if (view == null) { return null; } else { return new ScrollState(pos, view.getTop()); } } }
Example 12
Source File: BounceTouchListener.java From Bounce with Apache License 2.0 | 5 votes |
private boolean hasHitBottom() { if (mMainView instanceof ScrollView) { ScrollView scrollView = (ScrollView) mMainView; View view = scrollView.getChildAt(scrollView.getChildCount() - 1); int diff = (view.getBottom() - (scrollView.getHeight() + scrollView.getScrollY()));// Calculate the scrolldiff return diff == 0; } else if (mMainView instanceof ListView) { ListView listView = (ListView) mMainView; if (listView.getAdapter() != null) { if (listView.getAdapter().getCount() > 0) { return listView.getLastVisiblePosition() == listView.getAdapter().getCount() - 1 && listView.getChildAt(listView.getChildCount() - 1).getBottom() <= listView.getHeight(); } } } else if (mMainView instanceof RecyclerView) { RecyclerView recyclerView = (RecyclerView) mMainView; if (recyclerView.getAdapter() != null && recyclerView.getLayoutManager() != null) { RecyclerView.Adapter adapter = recyclerView.getAdapter(); if (adapter.getItemCount() > 0) { RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager(); if (layoutManager instanceof LinearLayoutManager) { LinearLayoutManager linearLayoutManager = (LinearLayoutManager) layoutManager; return linearLayoutManager.findLastCompletelyVisibleItemPosition() == adapter.getItemCount() - 1; } else if (layoutManager instanceof StaggeredGridLayoutManager) { StaggeredGridLayoutManager staggeredGridLayoutManager = (StaggeredGridLayoutManager) layoutManager; int[] checks = staggeredGridLayoutManager.findLastCompletelyVisibleItemPositions(null); for (int check : checks) { if (check == adapter.getItemCount() - 1) return true; } } } } } return false; }
Example 13
Source File: WordListPreference.java From Android-Keyboard with Apache License 2.0 | 5 votes |
void onWordListClicked(final View v) { // Note : v is the preference view final ViewParent parent = v.getParent(); // Just in case something changed in the framework, test for the concrete class if (!(parent instanceof ListView)) return; final ListView listView = (ListView)parent; final int indexToOpen; // Close all first, we'll open back any item that needs to be open. final boolean wasOpen = mInterfaceState.isOpen(mWordlistId); mInterfaceState.closeAll(); if (wasOpen) { // This button being shown. Take note that we don't want to open any button in the // loop below. indexToOpen = -1; } else { // This button was not being shown. Open it, and remember the index of this // child as the one to open in the following loop. mInterfaceState.setOpen(mWordlistId, mStatus); indexToOpen = listView.indexOfChild(v); } final int lastDisplayedIndex = listView.getLastVisiblePosition() - listView.getFirstVisiblePosition(); // The "lastDisplayedIndex" is actually displayed, hence the <= for (int i = 0; i <= lastDisplayedIndex; ++i) { final ButtonSwitcher buttonSwitcher = (ButtonSwitcher)listView.getChildAt(i) .findViewById(R.id.wordlist_button_switcher); if (i == indexToOpen) { buttonSwitcher.setStatusAndUpdateVisuals(getButtonSwitcherStatus(mStatus)); } else { buttonSwitcher.setStatusAndUpdateVisuals(ButtonSwitcher.STATUS_NO_BUTTON); } } }
Example 14
Source File: AppMenu.java From delion with Apache License 2.0 | 5 votes |
/** * Notifies the menu that the contents of the menu item specified by {@code menuRowId} have * changed. This should be called if icons, titles, etc. are changing for a particular menu * item while the menu is open. * @param menuRowId The id of the menu item to change. This must be a row id and not a child * id. */ public void menuItemContentChanged(int menuRowId) { // Make sure we have all the valid state objects we need. if (mAdapter == null || mMenu == null || mPopup == null || mPopup.getListView() == null) { return; } // Calculate the item index. int index = -1; int menuSize = mMenu.size(); for (int i = 0; i < menuSize; i++) { if (mMenu.getItem(i).getItemId() == menuRowId) { index = i; break; } } if (index == -1) return; // Check if the item is visible. ListView list = mPopup.getListView(); int startIndex = list.getFirstVisiblePosition(); int endIndex = list.getLastVisiblePosition(); if (index < startIndex || index > endIndex) return; // Grab the correct View. View view = list.getChildAt(index - startIndex); if (view == null) return; // Cause the Adapter to re-populate the View. list.getAdapter().getView(index, view, list); }
Example 15
Source File: ViewHelper.java From DMusic with Apache License 2.0 | 5 votes |
/** * 判断 ListView 是否已经滚动到底部 * * @param listView 需要被判断的 ListView * @return */ public static boolean isListViewAlreadyAtBottom(ListView listView) { if (listView.getAdapter() == null || listView.getHeight() == 0) { return false; } if (listView.getLastVisiblePosition() == listView.getAdapter().getCount() - 1) { View lastItemView = listView.getChildAt(listView.getChildCount() - 1); if (lastItemView != null && lastItemView.getBottom() == listView.getHeight()) { return true; } } return false; }
Example 16
Source File: AutoScrollListView.java From Android-Next with Apache License 2.0 | 5 votes |
public static void smoothScrollToPositionCompat(ListView listView, int position, int offset) { if (android.os.Build.VERSION.SDK_INT >= 11) { listView.smoothScrollToPositionFromTop(position, offset); } { int firstVisible = listView.getFirstVisiblePosition(); int lastVisible = listView.getLastVisiblePosition(); if (position < firstVisible) listView.smoothScrollToPosition(position); else listView.smoothScrollToPosition(position + lastVisible - firstVisible - 2); } }
Example 17
Source File: WordListPreference.java From Indic-Keyboard with Apache License 2.0 | 5 votes |
void onWordListClicked(final View v) { // Note : v is the preference view final ViewParent parent = v.getParent(); // Just in case something changed in the framework, test for the concrete class if (!(parent instanceof ListView)) return; final ListView listView = (ListView)parent; final int indexToOpen; // Close all first, we'll open back any item that needs to be open. final boolean wasOpen = mInterfaceState.isOpen(mWordlistId); mInterfaceState.closeAll(); if (wasOpen) { // This button being shown. Take note that we don't want to open any button in the // loop below. indexToOpen = -1; } else { // This button was not being shown. Open it, and remember the index of this // child as the one to open in the following loop. mInterfaceState.setOpen(mWordlistId, mStatus); indexToOpen = listView.indexOfChild(v); } final int lastDisplayedIndex = listView.getLastVisiblePosition() - listView.getFirstVisiblePosition(); // The "lastDisplayedIndex" is actually displayed, hence the <= for (int i = 0; i <= lastDisplayedIndex; ++i) { final ButtonSwitcher buttonSwitcher = (ButtonSwitcher)listView.getChildAt(i) .findViewById(R.id.wordlist_button_switcher); if (i == indexToOpen) { buttonSwitcher.setStatusAndUpdateVisuals(getButtonSwitcherStatus(mStatus)); } else { buttonSwitcher.setStatusAndUpdateVisuals(ButtonSwitcher.STATUS_NO_BUTTON); } } }
Example 18
Source File: LocationListBaseFragment.java From edslite with GNU General Public License v2.0 | 5 votes |
private void updateRowView(ListView lv, int pos) { int start = lv.getFirstVisiblePosition(); if(pos >= start && pos <= lv.getLastVisiblePosition()) { View view = lv.getChildAt(pos - start); lv.getAdapter().getView(pos, view, lv); } }
Example 19
Source File: ViewHelper.java From Common with Apache License 2.0 | 5 votes |
/** * 判断 ListView 是否已经滚动到底部 * * @param listView 需要被判断的 ListView * @return */ public static boolean isListViewAlreadyAtBottom(ListView listView) { if (listView.getAdapter() == null || listView.getHeight() == 0) { return false; } if (listView.getLastVisiblePosition() == listView.getAdapter().getCount() - 1) { View lastItemView = listView.getChildAt(listView.getChildCount() - 1); if (lastItemView != null && lastItemView.getBottom() == listView.getHeight()) { return true; } } return false; }
Example 20
Source File: FromListViewListener.java From GestureViews with Apache License 2.0 | 4 votes |
@Override boolean isShownInList(ListView list, int pos) { return pos >= list.getFirstVisiblePosition() && pos <= list.getLastVisiblePosition(); }