private int getScroll() {
View c = leftView.getChildAt(0); // this is the first visible row
int scrollY = -c.getTop();
listViewItemHeights.put(leftView.getFirstVisiblePosition(), c.getHeight());
for (int i = 0; i < leftView.getFirstVisiblePosition(); ++i) {
if (listViewItemHeights.get(i) != null) // (this is a sanity check)
scrollY += listViewItemHeights.get(i); // add all heights of the views that are gone
}
return scrollY;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// Refresh the app that was just edited, if it's visible in the list
ListView list = (ListView) findViewById(R.id.lstApps);
if (requestCode >= list.getFirstVisiblePosition()
&& requestCode <= list.getLastVisiblePosition()) {
View v = list.getChildAt(requestCode - list.getFirstVisiblePosition());
list.getAdapter().getView(requestCode, v, list);
}
}
/**
* This simple implementation creates a Bitmap copy of the list item currently shown at ListView
* <code>position</code>.
*/
@Override
public View onCreateFloatView(int position) {
// Guaranteed that this will not be null? I think so. Nope, got
// a NullPointerException once...
View v =
mListView.getChildAt(
position + mListView.getHeaderViewsCount() - mListView.getFirstVisiblePosition());
if (v == null) {
return null;
}
v.setPressed(false);
// Create a copy of the drawing cache so that it does not get
// recycled by the framework when the list tries to clean up memory
// v.setDrawingCacheQuality(View.DRAWING_CACHE_QUALITY_HIGH);
v.setDrawingCacheEnabled(true);
mFloatBitmap = Bitmap.createBitmap(v.getDrawingCache());
v.setDrawingCacheEnabled(false);
if (mImageView == null) {
mImageView = new ImageView(mListView.getContext());
}
mImageView.setBackgroundColor(mFloatBGColor);
mImageView.setPadding(0, 0, 0, 0);
mImageView.setImageBitmap(mFloatBitmap);
mImageView.setLayoutParams(new ViewGroup.LayoutParams(v.getWidth(), v.getHeight()));
return mImageView;
}
/**
* 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);
}
@Override
public void onResume() {
super.onResume();
// Format the most recently clicked item upon returning from info page
if (ListData.indexLastClicked != 99) {
int idx = ListData.indexLastClicked;
RelativeLayout lastClicked =
(RelativeLayout)
theListView.getChildAt(
ListData.indexLastClicked - theListView.getFirstVisiblePosition());
TextView v = (TextView) lastClicked.getChildAt(0);
TextView w = (TextView) lastClicked.getChildAt(1);
boolean completed = ListData.getCompletedList().get(ListData.indexLastClicked);
if (completed) {
v.setTextColor(Color.LTGRAY);
w.setText("DONE!");
w.setTextColor(Color.parseColor("#73e600"));
} else {
v.setTextColor(Color.BLACK);
w.setText("\u2705");
w.setTextColor(Color.LTGRAY);
}
}
}
/**
* Pushes data into list adapter.
*
* @param data the data to push
*/
@UiThread
protected void updateListView(PaginatedList<Artist> data) {
if (loadingProgressBar.getVisibility() == View.VISIBLE)
loadingProgressBar.setVisibility(View.INVISIBLE);
if (data.getCount() <= 0) {
Toast.makeText(this, "No singer was found", Toast.LENGTH_LONG).show();
this.finish();
return;
}
if (artistsFound == null) artistsFound = new PaginatedList<Artist>(data);
else artistsFound.addItems(data.getItems());
list = (ListView) findViewById(android.R.id.list);
// If the adapter doesn't exist, we create one with the initial data.
// If it exists, we update it.
int currentPosition = -1;
if (adapter == null) {
adapter = new ArtistsListAdapter(this, data.getItems());
} else {
currentPosition = list.getFirstVisiblePosition();
adapter.addItems(data.getItems());
}
list.setAdapter(adapter);
list.setSelectionFromTop(currentPosition + 1, 0);
if (artistsFound.getPaging().isLast()) list.removeFooterView(loadMoreProgress);
this.isLoading = false;
}
private void reset() {
int begin = mListView.getFirstVisiblePosition();
int end = mListView.getLastVisiblePosition();
if (mAdapter.cancelSelection(mListView, begin, end) < 1 && mFromMenu) {
mActionMode.finish();
}
}
public void startSildingInAnimation(int position) {
this.selectItemPosition = position;
arrowView.setY(leftView.getChildAt(position - leftView.getFirstVisiblePosition()).getTop());
tempScrollY = (int) getScroll();
if (Math.abs(leftView.getX()) < leftlist_img_width * 0.2) { // 如果leftview大部分都显示出来，就执行动画
parentViewSliding(
viewWidth,
0,
parentView,
500l,
new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
}
@Override
public void onAnimationStart(Animator animation) {
super.onAnimationStart(animation);
parentView.setVisibility(VISIBLE);
}
});
leftViewSliding(0, -(int) leftlist_img_width, leftView, 500l);
}
}
public void loadNextFiveTransactions() {
index = lv_Transactions.getFirstVisiblePosition();
View v = lv_Transactions.getChildAt(0);
top = (v == null) ? 0 : v.getTop();
FINAL += 5;
if (FINAL > listOfAllTransactions.size()) {
FINAL = listOfAllTransactions.size();
savingsAccountTransactionsListAdapter =
new SavingsAccountTransactionsListAdapter(
getActivity(), listOfAllTransactions.subList(INITIAL, FINAL));
savingsAccountTransactionsListAdapter.notifyDataSetChanged();
lv_Transactions.setAdapter(savingsAccountTransactionsListAdapter);
lv_Transactions.setSelectionFromTop(index, top);
return;
}
savingsAccountTransactionsListAdapter =
new SavingsAccountTransactionsListAdapter(
getActivity(), listOfAllTransactions.subList(INITIAL, FINAL));
savingsAccountTransactionsListAdapter.notifyDataSetChanged();
lv_Transactions.setAdapter(savingsAccountTransactionsListAdapter);
lv_Transactions.setSelectionFromTop(index, top);
}
public void onDelete(int accountId) {
int firstVisiblePos = mListView.getFirstVisiblePosition();
int removePos = mAdapter.getItemPosition(accountId, firstVisiblePos);
mToBeRemoved[0] = removePos;
mRemoveCount = 1;
animateDeletion();
}
public View getView(int position, View convertView, ViewGroup parent) {
AlbumDescriptor albumDescriptor = mData.get(position);
if (null == convertView || !albumDescriptor.getAlbumId().equals(convertView.getTag())) {
LayoutInflater inflater = LayoutInflater.from(mContext);
convertView = (ViewGroup) inflater.inflate(R.layout.album_list_item, parent, false);
convertView.setTag(albumDescriptor.getAlbumId());
}
ListView theListView = null;
if (parent instanceof ListView) {
theListView = (ListView) parent;
}
final TextView albumText = (TextView) convertView.findViewById(R.id.item_title);
albumText.setText("" + albumDescriptor.getPhotosCount() + " hot photos");
final ImageViewProxy imgView = (ImageViewProxy) convertView.findViewById(R.id.album_cover);
imgView.setImageLink(albumDescriptor.getCoverLinkage());
imgView.setLoadingIcon(Constants.IMG_LOADING);
imgView.setImageChangeListener(
new ImageViewProxy.OnImageChangeListiner() {
@Override
public void onImageChanged() {
Rect rect = imgView.getDrawable().copyBounds();
Point size = GraphicsUtil.getDisplaySize(imgView.getContext());
if (0 == rect.width() || 0 == size.x) {
// wrong, possible 'divided by 0'
return;
}
// TODO HERE TO CALC
// suppose the image is wider than screen width
int height =
rect.height()
* imgView.getLayoutParams().width
/ rect.width(); // size.x is screen width.
/*
if(size.x > rect.width()) {
//TODO HERE TO CALC
height = (int)(rect.height() * 1.1);
}
imgView.setScaleType(ImageView.ScaleType.FIT_CENTER);
imgView.getLayoutParams().height = height;
imgView.requestLayout();
*/
}
});
if (position > theListView.getFirstVisiblePosition() - PRE_LOAD_COUNT
|| position < theListView.getLastVisiblePosition() + PRE_LOAD_COUNT) {
imgView.show();
}
albumDescriptor.printInfo();
return convertView;
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
/*unregisterReceiver(receiver);*/
if (receiver != null) {
unregisterReceiver(receiver);
receiver = null;
}
getPreferences(MODE_PRIVATE)
.edit()
.putString("listScroll", listView.getFirstVisiblePosition() + "")
.commit();
Log.v("temp on pause", listView.getFirstVisiblePosition() + "");
super.onPause();
if ((pDialog != null) && pDialog.isShowing()) pDialog.dismiss();
pDialog = null;
}
private void setAllUnselected() {
for (int i = 0;
i <= (mListView.getLastVisiblePosition() - mListView.getFirstVisiblePosition());
i++)
mListView
.getChildAt(i)
.setBackgroundColor(getActivity().getResources().getColor(R.color.non_selected_color));
}
private void reprioritizeDownloads() {
int lastVisibleItem = listView.getLastVisiblePosition();
if (lastVisibleItem >= 0) {
int firstVisibleItem = listView.getFirstVisiblePosition();
adapter.prioritizeViewRange(
firstVisibleItem, lastVisibleItem, PROFILE_PICTURE_PREFETCH_BUFFER);
}
}
public static void ensureVisible(ListView list, int positionToShow) {
// TODO could be enhanced by using setSelectionFromTop(). setSelection
// always scrolls the list to the same offset, would prefer to show item
// at top/bottom depending on direction
if (positionToShow < list.getFirstVisiblePosition()
|| positionToShow > list.getLastVisiblePosition()) {
list.setSelection(positionToShow);
}
}
public int getScrollY() {
View c = listView.getChildAt(0);
if (c == null) {
return 0;
}
int firstVisiblePosition = listView.getFirstVisiblePosition();
int top = c.getTop();
return -top + firstVisiblePosition * c.getHeight();
}
@Override
public void onSaveInstanceState(Bundle outState) {
outState.putInt(POSITION_KEY, mListView.getFirstVisiblePosition());
if (mSelectedPosition != ListView.INVALID_POSITION) {
outState.putInt(SELECTED_KEY, mSelectedPosition);
}
super.onSaveInstanceState(outState);
}
/**
* Highlight current playing item Make the playing item can be seen.
*
* @param position
*/
private void onItemPlay(int position) {
// Make the the playing item can be seen.
mMusicListView.smoothScrollToPosition(position);
int prePlayingPosition = mMusicListAdapter.getPlayingPosition();
if (prePlayingPosition >= mMusicListView.getFirstVisiblePosition()
&& prePlayingPosition <= mMusicListView.getLastVisiblePosition()) {
int preItem = prePlayingPosition - mMusicListView.getFirstVisiblePosition();
((ViewGroup) mMusicListView.getChildAt(preItem)).getChildAt(0).setVisibility(View.INVISIBLE);
}
mMusicListAdapter.setPlayingPosition(position);
if (mMusicListView.getLastVisiblePosition() < position
|| mMusicListView.getFirstVisiblePosition() > position) return;
int currentItem = position - mMusicListView.getFirstVisiblePosition();
((ViewGroup) mMusicListView.getChildAt(currentItem)).getChildAt(0).setVisibility(View.VISIBLE);
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
if (lv != null) {
// ListViewの位置
outState.putInt("lvFirstVisiblePosition", lv.getFirstVisiblePosition());
outState.putInt("lvGetTop", lv.getChildAt(0).getTop());
}
}
@Override
public boolean getIsListViewToTop() {
View topListView = singleChatLv.getChildAt(singleChatLv.getFirstVisiblePosition());
if ((topListView == null) || (topListView.getTop() != 0)) {
return false;
} else {
return true;
}
}
public void loadImage() {
int start = mListView.getFirstVisiblePosition();
int end = mListView.getLastVisiblePosition();
if (end >= getCount()) {
end = getCount() - 1;
}
syncImageLoader.setLoadLimit(start, end);
syncImageLoader.unlock();
}
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
if (scrollState == AbsListView.OnScrollListener.SCROLL_STATE_IDLE) {
View topView = singleChatLv.getChildAt(singleChatLv.getFirstVisiblePosition());
if ((topView != null) && (topView.getTop() == 0)) {
mmPullDownView.startTopScroll();
}
}
}
@Override
public void onRowLongPressed(View view, Object item) {
extrasMenu.forceHide();
mMultiSelect.setItemCount(
mSongAdapter.toggleSelection(
mListView.getChildAt((Integer) item - mListView.getFirstVisiblePosition()),
((Song) mListView.getItemAtPosition((Integer) item))));
}
@Override
public void adjustScroll(int scrollHeight, int headerHeight) {
if (mListView == null) return;
if (scrollHeight == 0 && mListView.getFirstVisiblePosition() >= 1) {
return;
}
mListView.setSelectionFromTop(1, scrollHeight);
}
public void deleteView(int position) {
if (position < 0 || position > list.size()) return;
int first = mListView.getFirstVisiblePosition();
View view = mListView.getChildAt(position - first);
if (view != null) {
mListView.removeViewAt(position - first);
return;
}
System.out.println("DeviceAdapter 发生了严重的问题....view为NULL");
System.out.println("position is " + position + " and first is " + first);
}
public View getViewByPosition(int pos, ListView listView) {
final int firstListItemPosition = listView.getFirstVisiblePosition();
final int lastListItemPosition = firstListItemPosition + listView.getChildCount() - 1;
if (pos < firstListItemPosition || pos > lastListItemPosition) {
return listView.getAdapter().getView(pos, null, listView);
} else {
final int childIndex = pos - firstListItemPosition;
return listView.getChildAt(childIndex);
}
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
StaticMusic.smoothScrollTo = lv.getFirstVisiblePosition();
try {
database.close();
} catch (Exception e) {
e.printStackTrace();
}
}
// TODO sync
public void animateDismiss(final int pos) {
final int actionPos =
pos - mListView.getFirstVisiblePosition() + mListView.getHeaderViewsCount();
final View view = mListView.getChildAt(actionPos);
final ViewGroup.LayoutParams lp = view.getLayoutParams();
final int originWidth = view.getWidth();
final int originHeight = view.getHeight();
Animator translationXAnim = ObjectAnimator.ofFloat(view, "x", 0, -originWidth);
Animator alphaAnim = ObjectAnimator.ofFloat(view, "alpha", 1, 0);
ValueAnimator layoutParamYAnim = ValueAnimator.ofInt(originHeight, 0);
layoutParamYAnim.addUpdateListener(
new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator anim) {
lp.height = (Integer) anim.getAnimatedValue();
view.setLayoutParams(lp);
}
});
AnimatorSet animSet = new AnimatorSet();
animSet.setDuration(1000);
animSet.setTarget(view);
animSet.setInterpolator(new AccelerateInterpolator());
animSet.playTogether(translationXAnim, alphaAnim, layoutParamYAnim);
layoutParamYAnim.setStartDelay(200);
animSet.addListener(
new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator arg0) {}
@Override
public void onAnimationRepeat(Animator arg0) {}
@Override
public void onAnimationCancel(Animator arg0) {}
@Override
public void onAnimationEnd(Animator arg0) {
// 还原 View 的状态
lp.height = originHeight;
view.setLayoutParams(lp);
ViewHelper.setX(view, 0);
ViewHelper.setAlpha(view, 1);
mAdapter.getData().remove(pos);
mAdapter.notifyDataSetChanged();
}
});
animSet.start();
}
public static int getScrollY(ListView lv) {
View c = lv.getChildAt(0);
if (c == null) {
return 0;
}
int firstVisiblePosition = lv.getFirstVisiblePosition();
int top = c.getTop();
int scrollY = -top + firstVisiblePosition * c.getHeight();
return scrollY;
}
private void holdUserScrollPosition() {
// Remember the scroll position and offset of the list
// From: http://stackoverflow.com/a/3035521
int offset = 0;
View v = audioFileView.getChildAt(0);
if (v != null) {
offset = v.getTop() - audioFileView.getPaddingTop();
}
Intent intent = getIntent();
intent.putExtra(TOP_LIST_ITEM, audioFileView.getFirstVisiblePosition());
intent.putExtra(TOP_LIST_ITEM_OFFSET, offset);
}