Java tutorial
/* * This is the source code of Telegram for Android v. 3.x.x. * It is licensed under GNU GPL v. 2 or later. * You should have received a copy of the license in this archive (see LICENSE). * * Copyright Nikolai Kudashov, 2013-2015. */ package org.telegram.ui.Components; import android.app.Activity; import android.content.Context; import android.content.SharedPreferences; import android.database.DataSetObserver; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.RectF; import android.graphics.drawable.Drawable; import android.os.Build; import android.support.v4.view.PagerAdapter; import android.support.v4.view.ViewPager; import android.util.TypedValue; import android.view.Gravity; import android.view.HapticFeedbackConstants; import android.view.KeyEvent; import android.view.MotionEvent; import android.view.View; import android.view.ViewGroup; import android.view.ViewTreeObserver; import android.view.WindowManager; import android.widget.AbsListView; import android.widget.AdapterView; import android.widget.BaseAdapter; import android.widget.FrameLayout; import android.widget.GridView; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.PopupWindow; import android.widget.TextView; import org.telegram.messenger.AndroidUtilities; import org.telegram.messenger.AnimationCompat.ViewProxy; import org.telegram.messenger.Emoji; import org.telegram.messenger.EmojiData; import org.telegram.messenger.LocaleController; import org.telegram.messenger.NotificationCenter; import org.telegram.messenger.query.StickersQuery; import org.telegram.messenger.FileLog; import org.telegram.messenger.R; import org.telegram.tgnet.TLRPC; import org.telegram.ui.Cells.EmptyCell; import org.telegram.ui.Cells.StickerEmojiCell; import org.telegram.ui.StickerPreviewViewer; import java.lang.reflect.Field; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.HashMap; public class EmojiView extends FrameLayout implements NotificationCenter.NotificationCenterDelegate { public interface Listener { boolean onBackspace(); void onEmojiSelected(String emoji); void onStickerSelected(TLRPC.Document sticker); } private static final Field superListenerField; static { Field f = null; try { f = PopupWindow.class.getDeclaredField("mOnScrollChangedListener"); f.setAccessible(true); } catch (NoSuchFieldException e) { /* ignored */ } superListenerField = f; } private static final ViewTreeObserver.OnScrollChangedListener NOP = new ViewTreeObserver.OnScrollChangedListener() { @Override public void onScrollChanged() { /* do nothing */ } }; private class ImageViewEmoji extends ImageView { private boolean touched; private float lastX; private float lastY; private float touchedX; private float touchedY; public ImageViewEmoji(Context context) { super(context); setOnClickListener(new View.OnClickListener() { public void onClick(View view) { sendEmoji(null); } }); setOnLongClickListener(new OnLongClickListener() { @Override public boolean onLongClick(View view) { String code = (String) view.getTag(); if (EmojiData.emojiColoredMap.containsKey(code)) { touched = true; touchedX = lastX; touchedY = lastY; String color = emojiColor.get(code); if (color != null) { switch (color) { case "\uD83C\uDFFB": pickerView.setSelection(1); break; case "\uD83C\uDFFC": pickerView.setSelection(2); break; case "\uD83C\uDFFD": pickerView.setSelection(3); break; case "\uD83C\uDFFE": pickerView.setSelection(4); break; case "\uD83C\uDFFF": pickerView.setSelection(5); break; } } else { pickerView.setSelection(0); } view.getLocationOnScreen(location); int x = emojiSize * pickerView.getSelection() + AndroidUtilities .dp(4 * pickerView.getSelection() - (AndroidUtilities.isTablet() ? 5 : 1)); if (location[0] - x < AndroidUtilities.dp(5)) { x += (location[0] - x) - AndroidUtilities.dp(5); } else if (location[0] - x + popupWidth > AndroidUtilities.displaySize.x - AndroidUtilities.dp(5)) { x += (location[0] - x + popupWidth) - (AndroidUtilities.displaySize.x - AndroidUtilities.dp(5)); } int xOffset = -x; int yOffset = view.getTop() < 0 ? view.getTop() : 0; pickerView.setEmoji(code, AndroidUtilities.dp(AndroidUtilities.isTablet() ? 30 : 22) - xOffset + (int) AndroidUtilities.dpf2(0.5f)); pickerViewPopup.setFocusable(true); pickerViewPopup.showAsDropDown(view, xOffset, -view.getMeasuredHeight() - popupHeight + (view.getMeasuredHeight() - emojiSize) / 2 - yOffset); view.getParent().requestDisallowInterceptTouchEvent(true); return true; } return false; } }); setBackgroundResource(R.drawable.list_selector); setScaleType(ImageView.ScaleType.CENTER); } private void sendEmoji(String override) { String code = override != null ? override : (String) getTag(); if (override == null) { if (pager.getCurrentItem() != 0) { String color = emojiColor.get(code); if (color != null) { code += color; } } Integer count = emojiUseHistory.get(code); if (count == null) { count = 0; } if (count == 0 && emojiUseHistory.size() > 50) { for (int a = recentEmoji.size() - 1; a >= 0; a--) { String emoji = recentEmoji.get(a); emojiUseHistory.remove(emoji); recentEmoji.remove(a); if (emojiUseHistory.size() <= 50) { break; } } } emojiUseHistory.put(code, ++count); if (pager.getCurrentItem() != 0) { sortEmoji(); } saveRecentEmoji(); adapters.get(0).notifyDataSetChanged(); if (listener != null) { listener.onEmojiSelected(Emoji.fixEmoji(code)); } } else { if (listener != null) { listener.onEmojiSelected(Emoji.fixEmoji(override)); } } } @Override public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { setMeasuredDimension(View.MeasureSpec.getSize(widthMeasureSpec), View.MeasureSpec.getSize(widthMeasureSpec)); } @Override public boolean onTouchEvent(MotionEvent event) { if (touched) { if (event.getAction() == MotionEvent.ACTION_UP || event.getAction() == MotionEvent.ACTION_CANCEL) { if (pickerViewPopup != null && pickerViewPopup.isShowing()) { pickerViewPopup.dismiss(); String color = null; switch (pickerView.getSelection()) { case 1: color = "\uD83C\uDFFB"; break; case 2: color = "\uD83C\uDFFC"; break; case 3: color = "\uD83C\uDFFD"; break; case 4: color = "\uD83C\uDFFE"; break; case 5: color = "\uD83C\uDFFF"; break; } String code = (String) getTag(); if (pager.getCurrentItem() != 0) { if (color != null) { emojiColor.put(code, color); code += color; } else { emojiColor.remove(code); } setImageDrawable(Emoji.getEmojiBigDrawable(code)); sendEmoji(null); saveEmojiColors(); } else { sendEmoji(code + (color != null ? color : "")); } } touched = false; touchedX = -10000; touchedY = -10000; } else if (event.getAction() == MotionEvent.ACTION_MOVE) { boolean ignore = false; if (touchedX != -10000) { if (Math.abs(touchedX - event.getX()) > AndroidUtilities.getPixelsInCM(0.2f, true) || Math .abs(touchedY - event.getY()) > AndroidUtilities.getPixelsInCM(0.2f, false)) { touchedX = -10000; touchedY = -10000; } else { ignore = true; } } if (!ignore) { getLocationOnScreen(location); float x = location[0] + event.getX(); pickerView.getLocationOnScreen(location); x -= location[0] + AndroidUtilities.dp(3); int position = (int) (x / (emojiSize + AndroidUtilities.dp(4))); if (position < 0) { position = 0; } else if (position > 5) { position = 5; } pickerView.setSelection(position); } } } lastX = event.getX(); lastY = event.getY(); return super.onTouchEvent(event); } } private class EmojiPopupWindow extends PopupWindow { private ViewTreeObserver.OnScrollChangedListener mSuperScrollListener; private ViewTreeObserver mViewTreeObserver; public EmojiPopupWindow() { super(); init(); } public EmojiPopupWindow(Context context) { super(context); init(); } public EmojiPopupWindow(int width, int height) { super(width, height); init(); } public EmojiPopupWindow(View contentView) { super(contentView); init(); } public EmojiPopupWindow(View contentView, int width, int height, boolean focusable) { super(contentView, width, height, focusable); init(); } public EmojiPopupWindow(View contentView, int width, int height) { super(contentView, width, height); init(); } private void init() { if (superListenerField != null) { try { mSuperScrollListener = (ViewTreeObserver.OnScrollChangedListener) superListenerField.get(this); superListenerField.set(this, NOP); } catch (Exception e) { mSuperScrollListener = null; } } } private void unregisterListener() { if (mSuperScrollListener != null && mViewTreeObserver != null) { if (mViewTreeObserver.isAlive()) { mViewTreeObserver.removeOnScrollChangedListener(mSuperScrollListener); } mViewTreeObserver = null; } } private void registerListener(View anchor) { if (mSuperScrollListener != null) { ViewTreeObserver vto = (anchor.getWindowToken() != null) ? anchor.getViewTreeObserver() : null; if (vto != mViewTreeObserver) { if (mViewTreeObserver != null && mViewTreeObserver.isAlive()) { mViewTreeObserver.removeOnScrollChangedListener(mSuperScrollListener); } if ((mViewTreeObserver = vto) != null) { vto.addOnScrollChangedListener(mSuperScrollListener); } } } } @Override public void showAsDropDown(View anchor, int xoff, int yoff) { try { super.showAsDropDown(anchor, xoff, yoff); registerListener(anchor); } catch (Exception e) { FileLog.e("tmessages", e); } } @Override public void update(View anchor, int xoff, int yoff, int width, int height) { super.update(anchor, xoff, yoff, width, height); registerListener(anchor); } @Override public void update(View anchor, int width, int height) { super.update(anchor, width, height); registerListener(anchor); } @Override public void showAtLocation(View parent, int gravity, int x, int y) { super.showAtLocation(parent, gravity, x, y); unregisterListener(); } @Override public void dismiss() { setFocusable(false); try { super.dismiss(); } catch (Exception e) { //don't promt } unregisterListener(); } } private class EmojiColorPickerView extends View { private Drawable backgroundDrawable; private Drawable arrowDrawable; private String currentEmoji; private int arrowX; private int selection; private Paint rectPaint = new Paint(Paint.ANTI_ALIAS_FLAG); private RectF rect = new RectF(); public void setEmoji(String emoji, int arrowPosition) { currentEmoji = emoji; arrowX = arrowPosition; rectPaint.setColor(0x2f000000); invalidate(); } public String getEmoji() { return currentEmoji; } public void setSelection(int position) { if (selection == position) { return; } selection = position; invalidate(); } public int getSelection() { return selection; } public EmojiColorPickerView(Context context) { super(context); backgroundDrawable = getResources().getDrawable(R.drawable.stickers_back_all); arrowDrawable = getResources().getDrawable(R.drawable.stickers_back_arrow); } @Override protected void onDraw(Canvas canvas) { backgroundDrawable.setBounds(0, 0, getMeasuredWidth(), AndroidUtilities.dp(AndroidUtilities.isTablet() ? 60 : 52)); backgroundDrawable.draw(canvas); arrowDrawable.setBounds(arrowX - AndroidUtilities.dp(9), AndroidUtilities.dp(AndroidUtilities.isTablet() ? 55.5f : 47.5f), arrowX + AndroidUtilities.dp(9), AndroidUtilities.dp((AndroidUtilities.isTablet() ? 55.5f : 47.5f) + 8)); arrowDrawable.draw(canvas); if (currentEmoji != null) { String code; for (int a = 0; a < 6; a++) { int x = emojiSize * a + AndroidUtilities.dp(5 + 4 * a); int y = AndroidUtilities.dp(9); if (selection == a) { rect.set(x, y - (int) AndroidUtilities.dpf2(3.5f), x + emojiSize, y + emojiSize + AndroidUtilities.dp(3)); canvas.drawRoundRect(rect, AndroidUtilities.dp(4), AndroidUtilities.dp(4), rectPaint); } code = currentEmoji; if (a != 0) { code += "\uD83C"; switch (a) { case 1: code += "\uDFFB"; break; case 2: code += "\uDFFC"; break; case 3: code += "\uDFFD"; break; case 4: code += "\uDFFE"; break; case 5: code += "\uDFFF"; break; } } Drawable drawable = Emoji.getEmojiBigDrawable(code); if (drawable != null) { drawable.setBounds(x, y, x + emojiSize, y + emojiSize); drawable.draw(canvas); } } } } } private ArrayList<EmojiGridAdapter> adapters = new ArrayList<>(); private HashMap<String, Integer> emojiUseHistory = new HashMap<>(); private static HashMap<String, String> emojiColor = new HashMap<>(); private ArrayList<String> recentEmoji = new ArrayList<>(); private HashMap<Long, Integer> stickersUseHistory = new HashMap<>(); private ArrayList<TLRPC.Document> recentStickers = new ArrayList<>(); private HashMap<Long, Integer> stickerSetsUseCount = new HashMap<>(); private ArrayList<TLRPC.TL_messages_stickerSet> stickerSets = new ArrayList<>(); private int[] icons = { /*R.drawable.ic_emoji_smile, R.drawable.ic_emoji_flower, R.drawable.ic_emoji_bell, R.drawable.ic_emoji_car, R.drawable.ic_emoji_symbol,*/ R.drawable.ic_emoji_sticker, R.drawable.ic_emoji_recent, }; private Listener listener; private ViewPager pager; private FrameLayout recentsWrap; private FrameLayout stickersWrap; private ArrayList<GridView> views = new ArrayList<>(); private ImageView backspaceButton; private StickersGridAdapter stickersGridAdapter; private LinearLayout pagerSlidingTabStripContainer; private ScrollSlidingTabStrip scrollSlidingTabStrip; private GridView stickersGridView; private AdapterView.OnItemClickListener stickersOnItemClickListener; private Runnable openStickerPreviewRunnable; private StickerEmojiCell currentStickerPreviewCell; private EmojiColorPickerView pickerView; private EmojiPopupWindow pickerViewPopup; private int popupWidth; private int popupHeight; private int emojiSize; private int location[] = new int[2]; private int startX; private int startY; private int oldWidth; private int lastNotifyWidth; private boolean backspacePressed; private boolean backspaceOnce; private boolean showStickers; public EmojiView(boolean needStickers, Context context) { super(context); showStickers = needStickers; //Creates 5 grid views for each emoji set + //for (int i = 0; i < EmojiData.dataColored.length; i++) { GridView gridView = new GridView(context); if (AndroidUtilities.isTablet()) { gridView.setColumnWidth(AndroidUtilities.dp(60)); } else { gridView.setColumnWidth(AndroidUtilities.dp(45)); } gridView.setNumColumns(-1); views.add(gridView); //EmojiGridAdapter emojiGridAdapter = new EmojiGridAdapter(i-1); EmojiGridAdapter emojiGridAdapter = new EmojiGridAdapter(-1); gridView.setAdapter(emojiGridAdapter); AndroidUtilities.setListViewEdgeEffectColor(gridView, 0xfff5f6f7); adapters.add(emojiGridAdapter); //} if (showStickers) { StickersQuery.checkStickers(); stickersGridView = new GridView(context) { @Override public boolean onInterceptTouchEvent(MotionEvent event) { if (event.getAction() == MotionEvent.ACTION_DOWN) { int x = (int) event.getX(); int y = (int) event.getY(); int count = stickersGridView.getChildCount(); for (int a = 0; a < count; a++) { View view = stickersGridView.getChildAt(a); int top = view.getTop(); int bottom = view.getBottom(); int left = view.getLeft(); int right = view.getRight(); if (top > y || bottom < y || left > x || right < x) { continue; } if (!(view instanceof StickerEmojiCell) || !((StickerEmojiCell) view).showingBitmap()) { return super.onInterceptTouchEvent(event); } startX = x; startY = y; currentStickerPreviewCell = (StickerEmojiCell) view; openStickerPreviewRunnable = new Runnable() { @Override public void run() { if (openStickerPreviewRunnable == null) { return; } stickersGridView.setOnItemClickListener(null); stickersGridView.requestDisallowInterceptTouchEvent(true); openStickerPreviewRunnable = null; StickerPreviewViewer.getInstance().setParentActivity((Activity) getContext()); StickerPreviewViewer.getInstance() .setKeyboardHeight(EmojiView.this.getMeasuredHeight()); StickerPreviewViewer.getInstance().open(currentStickerPreviewCell.getSticker()); currentStickerPreviewCell.setScaled(true); } }; AndroidUtilities.runOnUIThread(openStickerPreviewRunnable, 200); return true; } } return false; } }; stickersGridView.setSelector(R.drawable.transparent); stickersGridView.setColumnWidth(AndroidUtilities.dp(72)); stickersGridView.setNumColumns(-1); stickersGridView.setPadding(0, AndroidUtilities.dp(4), 0, 0); stickersGridView.setClipToPadding(false); views.add(stickersGridView); stickersGridAdapter = new StickersGridAdapter(context); stickersGridView.setAdapter(stickersGridAdapter); stickersGridView.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { if (openStickerPreviewRunnable != null || StickerPreviewViewer.getInstance().isVisible()) { if (event.getAction() == MotionEvent.ACTION_UP || event.getAction() == MotionEvent.ACTION_CANCEL || event.getAction() == MotionEvent.ACTION_POINTER_UP) { AndroidUtilities.runOnUIThread(new Runnable() { @Override public void run() { stickersGridView.setOnItemClickListener(stickersOnItemClickListener); } }, 150); if (openStickerPreviewRunnable != null) { AndroidUtilities.cancelRunOnUIThread(openStickerPreviewRunnable); openStickerPreviewRunnable = null; } else if (StickerPreviewViewer.getInstance().isVisible()) { StickerPreviewViewer.getInstance().close(); if (currentStickerPreviewCell != null) { currentStickerPreviewCell.setScaled(false); currentStickerPreviewCell = null; } } } else if (event.getAction() != MotionEvent.ACTION_DOWN) { if (StickerPreviewViewer.getInstance().isVisible()) { if (event.getAction() == MotionEvent.ACTION_MOVE) { int x = (int) event.getX(); int y = (int) event.getY(); int count = stickersGridView.getChildCount(); for (int a = 0; a < count; a++) { View view = stickersGridView.getChildAt(a); int top = view.getTop(); int bottom = view.getBottom(); int left = view.getLeft(); int right = view.getRight(); if (top > y || bottom < y || left > x || right < x) { continue; } if (!(view instanceof StickerEmojiCell) || view == currentStickerPreviewCell) { break; } if (currentStickerPreviewCell != null) { currentStickerPreviewCell.setScaled(false); } currentStickerPreviewCell = (StickerEmojiCell) view; StickerPreviewViewer.getInstance() .setKeyboardHeight(EmojiView.this.getMeasuredHeight()); StickerPreviewViewer.getInstance() .open(currentStickerPreviewCell.getSticker()); currentStickerPreviewCell.setScaled(true); return true; } } return true; } else if (openStickerPreviewRunnable != null) { if (event.getAction() == MotionEvent.ACTION_MOVE) { if (Math.hypot(startX - event.getX(), startY - event.getY()) > AndroidUtilities .dp(10)) { AndroidUtilities.cancelRunOnUIThread(openStickerPreviewRunnable); openStickerPreviewRunnable = null; } } else { AndroidUtilities.cancelRunOnUIThread(openStickerPreviewRunnable); openStickerPreviewRunnable = null; } } } } return false; } }); stickersOnItemClickListener = new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long i) { if (!(view instanceof StickerEmojiCell)) { return; } if (openStickerPreviewRunnable != null) { AndroidUtilities.cancelRunOnUIThread(openStickerPreviewRunnable); openStickerPreviewRunnable = null; } if (currentStickerPreviewCell != null) { currentStickerPreviewCell.setScaled(false); currentStickerPreviewCell = null; } StickerEmojiCell cell = (StickerEmojiCell) view; if (cell.isDisabled()) { return; } cell.disable(); TLRPC.Document document = cell.getSticker(); Integer count = stickersUseHistory.get(document.id); if (count == null) { count = 0; } if (count == 0 && stickersUseHistory.size() > 19) { for (int a = recentStickers.size() - 1; a >= 0; a--) { TLRPC.Document sticker = recentStickers.get(a); stickersUseHistory.remove(sticker.id); recentStickers.remove(a); if (stickersUseHistory.size() <= 19) { break; } } } stickersUseHistory.put(document.id, ++count); long id = StickersQuery.getStickerSetId(document); if (id != -1) { count = stickerSetsUseCount.get(id); if (count == null) { count = 0; } stickerSetsUseCount.put(id, ++count); } saveRecentStickers(); if (listener != null) { listener.onStickerSelected(document); } } }; stickersGridView.setOnItemClickListener(stickersOnItemClickListener); AndroidUtilities.setListViewEdgeEffectColor(stickersGridView, 0xfff5f6f7); stickersWrap = new FrameLayout(context); stickersWrap.addView(stickersGridView); TextView textView = new TextView(context); textView.setText(LocaleController.getString("NoStickers", R.string.NoStickers)); textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 18); textView.setTextColor(0xff888888); stickersWrap.addView(textView, LayoutHelper.createFrame(LayoutHelper.WRAP_CONTENT, LayoutHelper.WRAP_CONTENT, Gravity.CENTER)); stickersGridView.setEmptyView(textView); scrollSlidingTabStrip = new ScrollSlidingTabStrip(context) { boolean startedScroll; float lastX; float lastTranslateX; boolean first = true; @Override public boolean onInterceptTouchEvent(MotionEvent ev) { if (getParent() != null) { getParent().requestDisallowInterceptTouchEvent(true); } return super.onInterceptTouchEvent(ev); } @Override public boolean onTouchEvent(MotionEvent ev) { if (Build.VERSION.SDK_INT >= 11) { if (first) { first = false; lastX = ev.getX(); } float newTranslationX = ViewProxy.getTranslationX(scrollSlidingTabStrip); if (scrollSlidingTabStrip.getScrollX() == 0 && newTranslationX == 0) { if (!startedScroll && lastX - ev.getX() < 0) { if (pager.beginFakeDrag()) { startedScroll = true; lastTranslateX = ViewProxy.getTranslationX(scrollSlidingTabStrip); } } else if (startedScroll && lastX - ev.getX() > 0) { if (pager.isFakeDragging()) { pager.endFakeDrag(); startedScroll = false; } } } if (startedScroll) { int dx = (int) (ev.getX() - lastX + newTranslationX - lastTranslateX); try { pager.fakeDragBy(dx); lastTranslateX = newTranslationX; } catch (Exception e) { try { pager.endFakeDrag(); } catch (Exception e2) { //don't promt } startedScroll = false; FileLog.e("tmessages", e); } } lastX = ev.getX(); if (ev.getAction() == MotionEvent.ACTION_CANCEL || ev.getAction() == MotionEvent.ACTION_UP) { first = true; if (startedScroll) { pager.endFakeDrag(); startedScroll = false; } } return startedScroll || super.onTouchEvent(ev); } return super.onTouchEvent(ev); } }; scrollSlidingTabStrip.setUnderlineHeight(AndroidUtilities.dp(1)); scrollSlidingTabStrip.setIndicatorColor(0xffe2e5e7); scrollSlidingTabStrip.setUnderlineColor(0xffe2e5e7); scrollSlidingTabStrip.setVisibility(INVISIBLE); addView(scrollSlidingTabStrip, LayoutHelper.createFrame(LayoutHelper.MATCH_PARENT, 48, Gravity.LEFT | Gravity.TOP)); ViewProxy.setTranslationX(scrollSlidingTabStrip, AndroidUtilities.displaySize.x); updateStickerTabs(); scrollSlidingTabStrip.setDelegate(new ScrollSlidingTabStrip.ScrollSlidingTabStripDelegate() { @Override public void onPageSelected(int page) { if (page == 0) { pager.setCurrentItem(0); return; } else if (page == 1 && !recentStickers.isEmpty()) { views.get(6).setSelection(0); return; } int index = page - (recentStickers.isEmpty() ? 1 : 2); if (index >= stickerSets.size()) { index = stickerSets.size() - 1; } views.get(6).setSelection(stickersGridAdapter.getPositionForPack(stickerSets.get(index))); } }); stickersGridView.setOnScrollListener(new AbsListView.OnScrollListener() { @Override public void onScrollStateChanged(AbsListView view, int scrollState) { } @Override public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { int count = view.getChildCount(); for (int a = 0; a < count; a++) { View child = view.getChildAt(a); if (child.getHeight() + child.getTop() < AndroidUtilities.dp(5)) { firstVisibleItem++; } else { break; } } scrollSlidingTabStrip .onPageScrolled(stickersGridAdapter.getTabForPosition(firstVisibleItem) + 1, 0); } }); } setBackgroundColor(0xfff5f6f7); pager = new ViewPager(context) { @Override public boolean onInterceptTouchEvent(MotionEvent ev) { if (getParent() != null) { getParent().requestDisallowInterceptTouchEvent(true); } return super.onInterceptTouchEvent(ev); } }; pager.setAdapter(new EmojiPagesAdapter()); pagerSlidingTabStripContainer = new LinearLayout(context) { @Override public boolean onInterceptTouchEvent(MotionEvent ev) { if (getParent() != null) { getParent().requestDisallowInterceptTouchEvent(true); } return super.onInterceptTouchEvent(ev); } }; pagerSlidingTabStripContainer.setOrientation(LinearLayout.HORIZONTAL); pagerSlidingTabStripContainer.setBackgroundColor(0xfff5f6f7); addView(pagerSlidingTabStripContainer, LayoutHelper.createFrame(LayoutParams.MATCH_PARENT, 48)); PagerSlidingTabStrip pagerSlidingTabStrip = new PagerSlidingTabStrip(context); pagerSlidingTabStrip.setViewPager(pager); pagerSlidingTabStrip.setShouldExpand(true); pagerSlidingTabStrip.setIndicatorHeight(AndroidUtilities.dp(2)); pagerSlidingTabStrip.setUnderlineHeight(AndroidUtilities.dp(1)); pagerSlidingTabStrip.setIndicatorColor(0xff2b96e2); pagerSlidingTabStrip.setUnderlineColor(0xffe2e5e7); pagerSlidingTabStripContainer.addView(pagerSlidingTabStrip, LayoutHelper.createLinear(0, 48, 1.0f)); pagerSlidingTabStrip.setOnPageChangeListener(new ViewPager.OnPageChangeListener() { @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { EmojiView.this.onPageScrolled(position, getMeasuredWidth(), positionOffsetPixels); } @Override public void onPageSelected(int position) { } @Override public void onPageScrollStateChanged(int state) { } }); FrameLayout frameLayout = new FrameLayout(context); pagerSlidingTabStripContainer.addView(frameLayout, LayoutHelper.createLinear(52, 48)); backspaceButton = new ImageView(context) { @Override public boolean onTouchEvent(MotionEvent event) { if (event.getAction() == MotionEvent.ACTION_DOWN) { backspacePressed = true; backspaceOnce = false; postBackspaceRunnable(350); } else if (event.getAction() == MotionEvent.ACTION_CANCEL || event.getAction() == MotionEvent.ACTION_UP) { backspacePressed = false; if (!backspaceOnce) { if (listener != null && listener.onBackspace()) { backspaceButton.performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP); } } } super.onTouchEvent(event); return true; } }; backspaceButton.setImageResource(R.drawable.ic_smiles_backspace); backspaceButton.setBackgroundResource(R.drawable.ic_emoji_backspace); backspaceButton.setScaleType(ImageView.ScaleType.CENTER); frameLayout.addView(backspaceButton, LayoutHelper.createFrame(52, 48)); View view = new View(context); view.setBackgroundColor(0xffe2e5e7); frameLayout.addView(view, LayoutHelper.createFrame(52, 1, Gravity.LEFT | Gravity.BOTTOM)); recentsWrap = new FrameLayout(context); recentsWrap.addView(views.get(0)); TextView textView = new TextView(context); textView.setText(LocaleController.getString("NoRecent", R.string.NoRecent)); textView.setTextSize(18); textView.setTextColor(0xff888888); textView.setGravity(Gravity.CENTER); recentsWrap.addView(textView); views.get(0).setEmptyView(textView); addView(pager, LayoutHelper.createFrame(LayoutHelper.MATCH_PARENT, LayoutHelper.MATCH_PARENT, Gravity.LEFT | Gravity.TOP, 0, 48, 0, 0)); emojiSize = AndroidUtilities.dp(AndroidUtilities.isTablet() ? 40 : 32); pickerView = new EmojiColorPickerView(context); pickerViewPopup = new EmojiPopupWindow(pickerView, popupWidth = AndroidUtilities.dp((AndroidUtilities.isTablet() ? 40 : 32) * 6 + 10 + 4 * 5), popupHeight = AndroidUtilities.dp(AndroidUtilities.isTablet() ? 64 : 56)); pickerViewPopup.setOutsideTouchable(true); pickerViewPopup.setClippingEnabled(true); pickerViewPopup.setInputMethodMode(EmojiPopupWindow.INPUT_METHOD_NOT_NEEDED); pickerViewPopup.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED); pickerViewPopup.getContentView().setFocusableInTouchMode(true); pickerViewPopup.getContentView().setOnKeyListener(new OnKeyListener() { @Override public boolean onKey(View v, int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_MENU && event.getRepeatCount() == 0 && event.getAction() == KeyEvent.ACTION_UP && pickerViewPopup != null && pickerViewPopup.isShowing()) { pickerViewPopup.dismiss(); return true; } return false; } }); loadRecents(); } private void onPageScrolled(int position, int width, int positionOffsetPixels) { if (scrollSlidingTabStrip == null) { return; } if (width == 0) { width = AndroidUtilities.displaySize.x; } int margin = 0; if (position == 5) { margin = -positionOffsetPixels; } else if (position == 6) { margin = -width; } if (ViewProxy.getTranslationX(pagerSlidingTabStripContainer) != margin) { ViewProxy.setTranslationX(pagerSlidingTabStripContainer, margin); ViewProxy.setTranslationX(scrollSlidingTabStrip, width + margin); scrollSlidingTabStrip.setVisibility(margin < 0 ? VISIBLE : INVISIBLE); if (Build.VERSION.SDK_INT < 11) { if (margin <= -width) { pagerSlidingTabStripContainer.clearAnimation(); pagerSlidingTabStripContainer.setVisibility(GONE); } else { pagerSlidingTabStripContainer.setVisibility(VISIBLE); } } } else if (Build.VERSION.SDK_INT < 11 && pagerSlidingTabStripContainer.getVisibility() == GONE) { pagerSlidingTabStripContainer.clearAnimation(); pagerSlidingTabStripContainer.setVisibility(GONE); } } private void postBackspaceRunnable(final int time) { AndroidUtilities.runOnUIThread(new Runnable() { @Override public void run() { if (!backspacePressed) { return; } if (listener != null && listener.onBackspace()) { backspaceButton.performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP); } backspaceOnce = true; postBackspaceRunnable(Math.max(50, time - 100)); } }, time); } private String convert(long paramLong) { String str = ""; for (int i = 0;; i++) { if (i >= 4) { return str; } int j = (int) (0xFFFF & paramLong >> 16 * (3 - i)); if (j != 0) { str = str + (char) j; } } } private void saveRecentEmoji() { SharedPreferences preferences = getContext().getSharedPreferences("emoji", Activity.MODE_PRIVATE); StringBuilder stringBuilder = new StringBuilder(); for (HashMap.Entry<String, Integer> entry : emojiUseHistory.entrySet()) { if (stringBuilder.length() != 0) { stringBuilder.append(","); } stringBuilder.append(entry.getKey()); stringBuilder.append("="); stringBuilder.append(entry.getValue()); } preferences.edit().putString("emojis2", stringBuilder.toString()).commit(); } private void saveEmojiColors() { SharedPreferences preferences = getContext().getSharedPreferences("emoji", Activity.MODE_PRIVATE); StringBuilder stringBuilder = new StringBuilder(); for (HashMap.Entry<String, String> entry : emojiColor.entrySet()) { if (stringBuilder.length() != 0) { stringBuilder.append(","); } stringBuilder.append(entry.getKey()); stringBuilder.append("="); stringBuilder.append(entry.getValue()); } preferences.edit().putString("color", stringBuilder.toString()).commit(); } private void saveRecentStickers() { SharedPreferences.Editor editor = getContext().getSharedPreferences("emoji", Activity.MODE_PRIVATE).edit(); StringBuilder stringBuilder = new StringBuilder(); for (HashMap.Entry<Long, Integer> entry : stickersUseHistory.entrySet()) { if (stringBuilder.length() != 0) { stringBuilder.append(","); } stringBuilder.append(entry.getKey()); stringBuilder.append("="); stringBuilder.append(entry.getValue()); } editor.putString("stickers", stringBuilder.toString()); ArrayList<Long> toRemove = null; for (HashMap.Entry<Long, Integer> entry : stickerSetsUseCount.entrySet()) { if (!StickersQuery.isStickerPackInstalled(entry.getKey())) { if (toRemove == null) { toRemove = new ArrayList<>(); } toRemove.add(entry.getKey()); } } if (toRemove != null) { for (int a = 0; a < toRemove.size(); a++) { stickerSetsUseCount.remove(toRemove.get(a)); } } stringBuilder.setLength(0); for (HashMap.Entry<Long, Integer> entry : stickerSetsUseCount.entrySet()) { if (stringBuilder.length() != 0) { stringBuilder.append(","); } stringBuilder.append(entry.getKey()); stringBuilder.append("="); stringBuilder.append(entry.getValue()); } editor.putString("sets", stringBuilder.toString()); editor.commit(); } private void sortEmoji() { recentEmoji.clear(); for (HashMap.Entry<String, Integer> entry : emojiUseHistory.entrySet()) { recentEmoji.add(entry.getKey()); } Collections.sort(recentEmoji, new Comparator<String>() { @Override public int compare(String lhs, String rhs) { Integer count1 = emojiUseHistory.get(lhs); Integer count2 = emojiUseHistory.get(rhs); if (count1 == null) { count1 = 0; } if (count2 == null) { count2 = 0; } if (count1 > count2) { return -1; } else if (count1 < count2) { return 1; } return 0; } }); while (recentEmoji.size() > 50) { recentEmoji.remove(recentEmoji.size() - 1); } } private void sortStickers() { if (StickersQuery.getStickerSets().isEmpty()) { recentStickers.clear(); return; } recentStickers.clear(); HashMap<Long, Integer> hashMap = new HashMap<>(); for (HashMap.Entry<Long, Integer> entry : stickersUseHistory.entrySet()) { TLRPC.Document sticker = StickersQuery.getStickerById(entry.getKey()); if (sticker != null) { recentStickers.add(sticker); hashMap.put(sticker.id, entry.getValue()); } } if (stickersUseHistory.size() != hashMap.size()) { stickersUseHistory = hashMap; saveRecentStickers(); } Collections.sort(recentStickers, new Comparator<TLRPC.Document>() { @Override public int compare(TLRPC.Document lhs, TLRPC.Document rhs) { Integer count1 = stickersUseHistory.get(lhs.id); Integer count2 = stickersUseHistory.get(rhs.id); if (count1 == null) { count1 = 0; } if (count2 == null) { count2 = 0; } if (count1 > count2) { return -1; } else if (count1 < count2) { return 1; } return 0; } }); while (recentStickers.size() > 20) { recentStickers.remove(recentStickers.size() - 1); } } private void updateStickerTabs() { scrollSlidingTabStrip.removeTabs(); scrollSlidingTabStrip.addIconTab(R.drawable.ic_emoji_smile); if (!recentStickers.isEmpty()) { scrollSlidingTabStrip.addIconTab(R.drawable.ic_smiles_recent); } stickerSets.clear(); ArrayList<TLRPC.TL_messages_stickerSet> packs = StickersQuery.getStickerSets(); for (int a = 0; a < packs.size(); a++) { TLRPC.TL_messages_stickerSet pack = packs.get(a); if ((pack.set.flags & 2) != 0 || pack.documents == null || pack.documents.isEmpty()) { continue; } stickerSets.add(pack); } Collections.sort(stickerSets, new Comparator<TLRPC.TL_messages_stickerSet>() { @Override public int compare(TLRPC.TL_messages_stickerSet lhs, TLRPC.TL_messages_stickerSet rhs) { Integer count1 = stickerSetsUseCount.get(lhs.set.id); Integer count2 = stickerSetsUseCount.get(rhs.set.id); if (count1 == null) { count1 = 0; } if (count2 == null) { count2 = 0; } if (count1 > count2) { return -1; } else if (count1 < count2) { return 1; } return 0; } }); for (int a = 0; a < stickerSets.size(); a++) { scrollSlidingTabStrip.addStickerTab(stickerSets.get(a).documents.get(0)); } scrollSlidingTabStrip.updateTabStyles(); } public void loadRecents() { String str; SharedPreferences preferences = getContext().getSharedPreferences("emoji", Activity.MODE_PRIVATE); try { emojiUseHistory.clear(); if (preferences.contains("emojis")) { str = preferences.getString("emojis", ""); if (str != null && str.length() > 0) { String[] args = str.split(","); for (String arg : args) { String[] args2 = arg.split("="); long value = Long.parseLong(args2[0]); String string = ""; for (int a = 0; a < 4; a++) { char ch = (char) value; string = String.valueOf(ch) + string; value >>= 16; if (value == 0) { break; } } if (string.length() > 0) { emojiUseHistory.put(string, Integer.parseInt(args2[1])); } } } preferences.edit().remove("emojis").commit(); saveRecentEmoji(); } else { str = preferences.getString("emojis2", ""); if (str != null && str.length() > 0) { String[] args = str.split(","); for (String arg : args) { String[] args2 = arg.split("="); emojiUseHistory.put(args2[0], Integer.parseInt(args2[1])); } } } if (emojiUseHistory.isEmpty()) { String[] newRecent = new String[] { "\uD83D\uDE02", "\uD83D\uDE18", "\u2764", "\uD83D\uDE0D", "\uD83D\uDE0A", "\uD83D\uDE01", "\uD83D\uDC4D", "\u263A", "\uD83D\uDE14", "\uD83D\uDE04", "\uD83D\uDE2D", "\uD83D\uDC8B", "\uD83D\uDE12", "\uD83D\uDE33", "\uD83D\uDE1C", "\uD83D\uDE48", "\uD83D\uDE09", "\uD83D\uDE03", "\uD83D\uDE22", "\uD83D\uDE1D", "\uD83D\uDE31", "\uD83D\uDE21", "\uD83D\uDE0F", "\uD83D\uDE1E", "\uD83D\uDE05", "\uD83D\uDE1A", "\uD83D\uDE4A", "\uD83D\uDE0C", "\uD83D\uDE00", "\uD83D\uDE0B", "\uD83D\uDE06", "\uD83D\uDC4C", "\uD83D\uDE10", "\uD83D\uDE15" }; for (int i = 0; i < newRecent.length; i++) { emojiUseHistory.put(newRecent[i], newRecent.length - i); } saveRecentEmoji(); } sortEmoji(); adapters.get(0).notifyDataSetChanged(); } catch (Exception e) { FileLog.e("tmessages", e); } try { str = preferences.getString("color", ""); if (str != null && str.length() > 0) { String[] args = str.split(","); for (String arg : args) { String[] args2 = arg.split("="); emojiColor.put(args2[0], args2[1]); } } } catch (Exception e) { FileLog.e("tmessages", e); } if (showStickers) { try { stickersUseHistory.clear(); str = preferences.getString("stickers", ""); if (str != null && str.length() > 0) { String[] args = str.split(","); for (String arg : args) { String[] args2 = arg.split("="); stickersUseHistory.put(Long.parseLong(args2[0]), Integer.parseInt(args2[1])); } } stickerSetsUseCount.clear(); str = preferences.getString("sets", ""); if (str != null && str.length() > 0) { String[] args = str.split(","); for (String arg : args) { String[] args2 = arg.split("="); stickerSetsUseCount.put(Long.parseLong(args2[0]), Integer.parseInt(args2[1])); } } sortStickers(); updateStickerTabs(); } catch (Exception e) { FileLog.e("tmessages", e); } } } @Override public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { FrameLayout.LayoutParams layoutParams = (FrameLayout.LayoutParams) pagerSlidingTabStripContainer .getLayoutParams(); FrameLayout.LayoutParams layoutParams1 = null; layoutParams.width = View.MeasureSpec.getSize(widthMeasureSpec); if (scrollSlidingTabStrip != null) { layoutParams1 = (FrameLayout.LayoutParams) scrollSlidingTabStrip.getLayoutParams(); if (layoutParams1 != null) { layoutParams1.width = layoutParams.width; } } if (layoutParams.width != oldWidth) { if (scrollSlidingTabStrip != null && layoutParams1 != null) { onPageScrolled(pager.getCurrentItem(), layoutParams.width, 0); scrollSlidingTabStrip.setLayoutParams(layoutParams1); } pagerSlidingTabStripContainer.setLayoutParams(layoutParams); oldWidth = layoutParams.width; } super.onMeasure(View.MeasureSpec.makeMeasureSpec(layoutParams.width, MeasureSpec.EXACTLY), View.MeasureSpec.makeMeasureSpec(View.MeasureSpec.getSize(heightMeasureSpec), MeasureSpec.EXACTLY)); } @Override protected void onLayout(boolean changed, int left, int top, int right, int bottom) { if (lastNotifyWidth != right - left) { lastNotifyWidth = right - left; reloadStickersAdapter(); } super.onLayout(changed, left, top, right, bottom); } private void reloadStickersAdapter() { if (stickersGridAdapter != null) { stickersGridAdapter.notifyDataSetChanged(); } if (StickerPreviewViewer.getInstance().isVisible()) { StickerPreviewViewer.getInstance().close(); } if (openStickerPreviewRunnable != null) { AndroidUtilities.cancelRunOnUIThread(openStickerPreviewRunnable); openStickerPreviewRunnable = null; } if (currentStickerPreviewCell != null) { currentStickerPreviewCell.setScaled(false); currentStickerPreviewCell = null; } } public void setListener(Listener value) { listener = value; } public void invalidateViews() { for (GridView gridView : views) { if (gridView != null) { gridView.invalidateViews(); } } } @Override protected void onAttachedToWindow() { super.onAttachedToWindow(); if (stickersGridAdapter != null) { NotificationCenter.getInstance().addObserver(this, NotificationCenter.stickersDidLoaded); } } @Override public void setVisibility(int visibility) { super.setVisibility(visibility); if (visibility != GONE) { sortEmoji(); //adapters.get(0).notifyDataSetChanged(); if (stickersGridAdapter != null) { NotificationCenter.getInstance().addObserver(this, NotificationCenter.stickersDidLoaded); sortStickers(); updateStickerTabs(); reloadStickersAdapter(); } } } @Override protected void onDetachedFromWindow() { super.onDetachedFromWindow(); if (stickersGridAdapter != null) { NotificationCenter.getInstance().removeObserver(this, NotificationCenter.stickersDidLoaded); } if (pickerViewPopup != null && pickerViewPopup.isShowing()) { pickerViewPopup.dismiss(); } } @Override public void didReceivedNotification(int id, Object... args) { if (id == NotificationCenter.stickersDidLoaded) { updateStickerTabs(); reloadStickersAdapter(); } } private class StickersGridAdapter extends BaseAdapter { private Context context; private int stickersPerRow; private HashMap<Integer, TLRPC.TL_messages_stickerSet> rowStartPack = new HashMap<>(); private HashMap<TLRPC.TL_messages_stickerSet, Integer> packStartRow = new HashMap<>(); private HashMap<Integer, TLRPC.Document> cache = new HashMap<>(); private int totalItems; public StickersGridAdapter(Context context) { this.context = context; } public int getCount() { return totalItems != 0 ? totalItems + 1 : 0; } public Object getItem(int i) { return cache.get(i); } public long getItemId(int i) { return NO_ID; } public int getPositionForPack(TLRPC.TL_messages_stickerSet stickerSet) { return packStartRow.get(stickerSet) * stickersPerRow; } @Override public boolean areAllItemsEnabled() { return false; } @Override public boolean isEnabled(int position) { return cache.get(position) != null; } @Override public int getItemViewType(int position) { if (cache.get(position) != null) { return 0; } return 1; } @Override public int getViewTypeCount() { return 2; } public int getTabForPosition(int position) { if (stickersPerRow == 0) { int width = getMeasuredWidth(); if (width == 0) { width = AndroidUtilities.displaySize.x; } stickersPerRow = width / AndroidUtilities.dp(72); } int row = position / stickersPerRow; TLRPC.TL_messages_stickerSet pack = rowStartPack.get(row); if (pack == null) { return 0; } return stickerSets.indexOf(pack) + (recentStickers.isEmpty() ? 0 : 1); } public View getView(int i, View view, ViewGroup viewGroup) { TLRPC.Document sticker = cache.get(i); if (sticker != null) { if (view == null) { view = new StickerEmojiCell(context) { public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(AndroidUtilities.dp(82), MeasureSpec.EXACTLY)); } }; } ((StickerEmojiCell) view).setSticker(sticker, false); } else { if (view == null) { view = new EmptyCell(context); } if (i == totalItems) { int row = (i - 1) / stickersPerRow; TLRPC.TL_messages_stickerSet pack = rowStartPack.get(row); if (pack == null) { ((EmptyCell) view).setHeight(1); } else { int height = pager.getHeight() - (int) Math.ceil(pack.documents.size() / (float) stickersPerRow) * AndroidUtilities.dp(82); ((EmptyCell) view).setHeight(height > 0 ? height : 1); } } else { ((EmptyCell) view).setHeight(AndroidUtilities.dp(82)); } } return view; } @Override public void notifyDataSetChanged() { int width = getMeasuredWidth(); if (width == 0) { width = AndroidUtilities.displaySize.x; } stickersPerRow = width / AndroidUtilities.dp(72); rowStartPack.clear(); packStartRow.clear(); cache.clear(); totalItems = 0; ArrayList<TLRPC.TL_messages_stickerSet> packs = stickerSets; for (int a = -1; a < packs.size(); a++) { ArrayList<TLRPC.Document> documents; TLRPC.TL_messages_stickerSet pack = null; int startRow = totalItems / stickersPerRow; if (a == -1) { documents = recentStickers; } else { pack = packs.get(a); documents = pack.documents; packStartRow.put(pack, startRow); } if (documents.isEmpty()) { continue; } int count = (int) Math.ceil(documents.size() / (float) stickersPerRow); for (int b = 0; b < documents.size(); b++) { cache.put(b + totalItems, documents.get(b)); } totalItems += count * stickersPerRow; for (int b = 0; b < count; b++) { rowStartPack.put(startRow + b, pack); } } super.notifyDataSetChanged(); } @Override public void unregisterDataSetObserver(DataSetObserver observer) { if (observer != null) { super.unregisterDataSetObserver(observer); } } } private class EmojiGridAdapter extends BaseAdapter { private int emojiPage; public EmojiGridAdapter(int page) { emojiPage = page; } public int getCount() { if (emojiPage == -1) { return recentEmoji.size(); } return EmojiData.dataColored[emojiPage].length; } public Object getItem(int i) { return null; } @Override public long getItemId(int position) { return position; } public View getView(int i, View view, ViewGroup paramViewGroup) { ImageViewEmoji imageView = (ImageViewEmoji) view; if (imageView == null) { imageView = new ImageViewEmoji(getContext()); } String code; String coloredCode; if (emojiPage == -1) { coloredCode = code = recentEmoji.get(i); } else { coloredCode = code = EmojiData.dataColored[emojiPage][i]; String color = emojiColor.get(code); if (color != null) { coloredCode += color; } } imageView.setImageDrawable(Emoji.getEmojiBigDrawable(coloredCode)); imageView.setTag(code); return imageView; } @Override public void unregisterDataSetObserver(DataSetObserver observer) { if (observer != null) { super.unregisterDataSetObserver(observer); } } } private class EmojiPagesAdapter extends PagerAdapter implements PagerSlidingTabStrip.IconTabProvider { public void destroyItem(ViewGroup viewGroup, int position, Object object) { View view; if (position == 0) { view = stickersWrap; } else { view = recentsWrap; } viewGroup.removeView(view); } public int getCount() { return views.size(); } public int getPageIconResId(int paramInt) { return icons[paramInt]; } public Object instantiateItem(ViewGroup viewGroup, int position) { View view; if (position == 0) { view = stickersWrap; } else { view = recentsWrap; } viewGroup.addView(view); return view; } public boolean isViewFromObject(View view, Object object) { return view == object; } @Override public void unregisterDataSetObserver(DataSetObserver observer) { if (observer != null) { super.unregisterDataSetObserver(observer); } } } }