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POAndroid: clear the listview data on button click
 

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  1. POAndroid: clear the listview data on button click
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    <p>In my app I have a listview where it is loading data based on the search keyword, now I want to clear the loaded data on button click. </p> <pre><code> @Override protected void onPreExecute() { SearchUtils searchUtils = null; List&lt;Place&gt; searchResult = null; String searchType = null; Log.d(TAG, "onPreExecute start="); // show your dialog super.onPreExecute(); Log.d(TAG, "LoadMenuSearch isOldDataToLoad : " + isOldDataToLoad); if(!this.isOldDataToLoad){ this.dialog.setCanceledOnTouchOutside(false); this.dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER); this.dialog.setOnCancelListener(new OnCancelListener() { @Override public void onCancel(DialogInterface arg0) { } }); Button morerecords = (Button) activity.findViewById(R.id.morerecords); morerecords.setVisibility(View.GONE); morerecords.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Log.d(TAG, "Do Nothing........................"); } }); //morerecords.setVisibility(View.VISIBLE); final Button closesearch = (Button) activity.findViewById(R.id.closesearch); closesearch.setVisibility(View.VISIBLE); closesearch.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { ListView menuSearchListView = (ListView) activity .findViewById(R.id.menusearchlist); searchAdapter.clear(); searchAdapter.notifyDataSetChanged(); closesearch.setVisibility(View.GONE); } }); </code></pre> <p>Here in the preexecute I have a button, now when I click the button loaded data should be clear and the listview should get refreshed.</p> <p>my search adaptor </p> <pre><code> public SearchAdapter(Activity activity, int viewResourceId, int renderer, double latitute, double longitute, String menuId, ArrayList&lt;Neighborhood&gt; nhdDetails, ArrayList&lt;AttractionData&gt; items, boolean isAddressBook, boolean isRecommended) { super(activity, viewResourceId, items); streetView = new StreetViewUtils(activity); streetView.loadHtml(); } @Override public View getView(final int position, View convertView, ViewGroup parent) { View view = convertView; if (view == null) { LayoutInflater inflater = (LayoutInflater) (getContext() .getSystemService(Context.LAYOUT_INFLATER_SERVICE)); view = inflater.inflate(renderer, null); } attractionData = items.get(position); Log.d(TAG, "attractionData " + attractionData + " for position " + position); TextView textName = (TextView) view.findViewById(R.id.textName); TextView textAddress = (TextView) view.findViewById(R.id.textAddress); TextView textPhone = (TextView) view.findViewById(R.id.textPhone); addFavorite = (ImageView) view.findViewById(R.id.pinsave); LinearLayout itemlayer = (LinearLayout) view .findViewById(R.id.itemlayer); itemlayer.setTag(attractionData); textName.setText(attractionData.getfName()); if (!isRecommended) { TextView mapidDisplay = (TextView) view.findViewById(R.id.mapid); mapidDisplay.setTextSize(Constants.defaultFontSize + 2); if (isAddressBook) { mapidDisplay.setBackgroundColor(Color.YELLOW); mapidDisplay.setTextColor(Color.BLACK); } else { mapidDisplay.setBackgroundColor(Color.RED); mapidDisplay.setTextColor(Color.WHITE); } mapidDisplay.setTag(attractionData); mapidDisplay.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { focusLication(v, event); return true; } }); Log.d(TAG, "attractionData.getLatitude() -----&gt;" + attractionData.getLatitude() + " attractionData.getLongitude()---&gt; " + attractionData.getLongitude()); if (attractionData.getLatitude() != 0 &amp;&amp; attractionData.getLongitude() != 0) { mapidDisplay.setText(" " + abbrMapId + (position + 1) + " "); mapidDisplay.setVisibility(View.VISIBLE); } else { mapidDisplay.setVisibility(View.GONE); } } else { ImageView acceptRecommend = (ImageView) view .findViewById(R.id.acceptRecommend); ImageView rejectRecommend = (ImageView) view .findViewById(R.id.rejectRecommend); acceptRecommend.setVisibility(View.VISIBLE); rejectRecommend.setVisibility(View.VISIBLE); acceptRecommend.setTag(attractionData); rejectRecommend.setTag(attractionData); acceptRecommend.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: AttractionData data = (AttractionData) ((ImageView) v).getTag(); ((CityPreferences) activity.getApplication()).updateRecommended(data); items.remove(position); notifyDataSetChanged(); break; case MotionEvent.ACTION_MOVE: break; case MotionEvent.ACTION_UP: break; } return true; } }); rejectRecommend.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: AttractionData data = (AttractionData) ((ImageView) v).getTag(); long id = data.getId(); ((CityPreferences) activity.getApplication()).deleteSavedAttractions(data); data.setStatus("unselect"); items.remove(position); notifyDataSetChanged(); break; case MotionEvent.ACTION_MOVE: break; case MotionEvent.ACTION_UP: break; } return true; } }); } textAddress.setText(attractionData.getAddress()); TextView distance = (TextView) view.findViewById(R.id.distance); ImageView distanceDir = (ImageView) view .findViewById(R.id.distancedirection); Bitmap bitmap = BitmapFactory.decodeResource(activity.getResources(), R.drawable.navigationdir); float newRot = new Float(attractionData.getNavigationAngle()); Matrix matrix = new Matrix(); matrix.postRotate(newRot); // Log.d(TAG, "Roating the Navigation Image : 01" + // Constants.mOrientation[0]); if (Constants.mOrientation != null &amp;&amp; Constants.mOrientation.length &gt; 0) { double bearingToTarget = newRot + Constants.mOrientation[0]; double drawingAngle = Math.toRadians(bearingToTarget) - (Math.PI / 2); float cos = (float) Math.cos(drawingAngle); float sin = (float) Math.sin(drawingAngle); matrix.setSinCos(sin, cos); Bitmap redrawnBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true); distanceDir.setImageBitmap(redrawnBitmap); // distanceDir.setRotation(90); } else { Bitmap redrawnBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true); distanceDir.setImageBitmap(redrawnBitmap); } if (attractionData.getDistance() != null &amp;&amp; !attractionData.getDistance().equals("")) { distance.setText(attractionData.getDistance()); } else { distance.setText(""); } if (attractionData.getLatitude() != 0.00 &amp;&amp; attractionData.getLongitude() != 0.00) { distanceDir.setVisibility(View.VISIBLE); distance.setVisibility(View.VISIBLE); } else { distanceDir.setVisibility(View.GONE); distance.setVisibility(View.GONE); } // Log.d(TAG, "end to search distance --&gt;"); LinearLayout llReviews = (LinearLayout) view .findViewById(R.id.reviewsrating); llReviews.setVisibility(View.VISIBLE); GridView gridview = (GridView) view.findViewById(R.id.ratingView); TextView textRating = (TextView) view.findViewById(R.id.rating); TextView textReviews = (TextView) view.findViewById(R.id.reviews); textRating.setText("(" + attractionData.getRating() + ")"); gridview.setAdapter(new ImageAdapter(getContext(), attractionData .getRating())); // code for review if (attractionData.getReview() != null &amp;&amp; (attractionData.getReview().equals("1") || attractionData .getReview().equals("0"))) { textReviews.setText(attractionData.getReview() + " review"); } else if (attractionData.getReview() != null) { textReviews.setText(attractionData.getReview() + " reviews"); } else { textReviews.setText("0 review"); } textReviews.setTag(attractionData.getReviewUrl()); textReviews.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { String webURL = (String) v.getTag(); utils.openWebURL(v.getContext(), webURL); } }); if (Constants.isDefineNeighbourHood) { addFavorite.setVisibility(View.GONE); } else { if (attractionData.getId() &gt; 0) { if (menuId != null &amp;&amp; menuId.equalsIgnoreCase(Constants.menuFavouritePlaceId)) { addFavorite.setImageResource(R.drawable.favorite_active); addFavorite.setVisibility(View.GONE); attractionData.setStatus("select"); EditAttraction editAttraction = new EditAttraction(activity, false); itemlayer.setOnLongClickListener(editAttraction); if (!Constants.isEysonly) { Loginmyplaces loginmyplaces = new Loginmyplaces(activity); itemlayer.setOnClickListener(loginmyplaces); } } else { addFavorite.setImageResource(R.drawable.favorite_active); addFavorite.setVisibility(View.VISIBLE); attractionData.setStatus("select"); EditAttraction editAttraction = new EditAttraction(activity, true); itemlayer.setOnLongClickListener(editAttraction); } } else { addFavorite.setVisibility(View.VISIBLE); addFavorite.setImageResource(R.drawable.favorite); attractionData.setStatus("unselect"); EditAttraction editAttraction = new EditAttraction(activity, true); itemlayer.setOnLongClickListener(editAttraction); } } // Log.d(TAG, "Constants.totalFavorite : status : " + // attractionData.getStatus() + " for " + attractionData.getName()); addFavorite.setTag(attractionData); addFavorite.setOnTouchListener(new OnTouchListener() { public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: AttractionData data = (AttractionData) ((ImageView) v) .getTag(); ImageView currentpinsave = (ImageView) v .findViewById(R.id.pinsave); Log.d(TAG, "Constants.totalFavorite : status : " + data.getStatus()); Log.d(TAG, "Constants.totalFavorite : Resource : " + currentpinsave); if (data.getStatus() != null &amp;&amp; data.getStatus().equalsIgnoreCase("select")) { Log.d(TAG, "data.status " + data.getStatus()); currentpinsave.setImageResource(R.drawable.favorite); currentpinsave.setTag(data); long id = data.getId(); ((CityPreferences) activity.getApplication()) .deleteSavedAttractions(data); data.setStatus("unselect"); currentpinsave.setImageResource(R.drawable.favorite); new DeleteFromConstance().execute(id); } else { Log.d(TAG, "data.status " + data.getStatus()); currentpinsave .setImageResource(R.drawable.favorite_active); currentpinsave.setTag(data); data.setMenuId(menuId); streetView.checkPhotoView(data); ((CityPreferences) activity.getApplication()) .saveMyAttractions(data, true); data.setStatus("select"); utils.checkFavoriteCity(activity, data); } break; case MotionEvent.ACTION_MOVE: break; case MotionEvent.ACTION_UP: break; } return true; } }); if (!isRecommended) { if (attractionData.getImages() != null) { Log.d(TAG, "ImageUtils --&gt; inside blob saved"); ImageView placeImage = (ImageView) view .findViewById(R.id.placeimage); placeImage.setVisibility(View.VISIBLE); placeImage.setImageBitmap(attractionData.getImages()); } else { Log.d(TAG, "ImageUtils --&gt; inside blob not saved"); ImageView placeImage = (ImageView) view .findViewById(R.id.placeimage); placeImage.setVisibility(View.GONE); } } ImageView navigationImage = (ImageView) view .findViewById(R.id.navigationImage); ImageView streetViewImage = (ImageView) view .findViewById(R.id.streetview); if (attractionData.getLatitude() != 0 &amp;&amp; attractionData.getLongitude() != 0) { navigationImage.setImageResource(R.drawable.navigation); navigationImage.setTag(attractionData); navigationImage.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: if (utils.isConnectionAvailable(v.getContext())) { Intent intent = new Intent(v.getContext(), Navigator.class); AttractionData data = (AttractionData) ((ImageView) v).getTag(); Bundle bundle = new Bundle(); // add data to bundle bundle.putString("startlatitude", latitute + ""); bundle.putString("startlongitude", longitute + ""); bundle.putString("latitude", data.getLatitude() + ""); bundle.putString("longitude", data.getLongitude() + ""); intent.putExtras(bundle); v.getContext().startActivity(new Intent(intent).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK)); } else { Toast.makeText(v.getContext(), v.getContext().getResources().getString(R.string.noconnection), Toast.LENGTH_LONG).show(); } break; case MotionEvent.ACTION_MOVE: break; case MotionEvent.ACTION_UP: break; } return true; } }); streetViewImage.setTag(attractionData); streetViewImage.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: AttractionData data = (AttractionData) v.getTag(); Location location = new Location(""); location.setLatitude(data.getLatitude()); location.setLongitude(data.getLongitude()); streetView.checkStreetView(location); break; case MotionEvent.ACTION_MOVE: break; case MotionEvent.ACTION_UP: break; } return true; }}); streetViewImage.setVisibility(View.VISIBLE); navigationImage.setVisibility(View.VISIBLE); } else { streetViewImage.setVisibility(View.GONE); navigationImage.setVisibility(View.GONE); } LinearLayout commentLayout = (LinearLayout) view .findViewById(R.id.commentLayout); if (attractionData.getComments() != null &amp;&amp; !attractionData.getComments().trim().equals("")) { commentLayout.setVisibility(View.VISIBLE); TextView comment = (TextView) view.findViewById(R.id.comment); comment.setText(attractionData.getComments()); } else { commentLayout.setVisibility(View.GONE); } ImageView phImage = (ImageView) view.findViewById(R.id.phoneImage); String phoneNo = attractionData.getPhoneNo(); if (attractionData.getMobileNo() != null &amp;&amp; !attractionData.getMobileNo().equals("") &amp;&amp; !attractionData.getMobileNo().equalsIgnoreCase("null")) { if (phoneNo != null &amp;&amp; !phoneNo.equals("") &amp;&amp; !phoneNo.equalsIgnoreCase("null")) { phoneNo = phoneNo + ",\n" + attractionData.getMobileNo(); } else { phoneNo = attractionData.getMobileNo(); } } Log.d(TAG, "------------------&gt; phoneNo " + phoneNo); if (phoneNo != null &amp;&amp; !phoneNo.equals("") &amp;&amp; !phoneNo.equalsIgnoreCase("null")) { textPhone.setText(phoneNo); textPhone.setVisibility(View.VISIBLE); phImage.setVisibility(View.VISIBLE); phImage.setImageResource(R.drawable.phone); phImage.setTag(phoneNo); phImage.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: String phone = (String) ((ImageView) v).getTag(); Log.d(TAG, "onTouch phone--" + phone); utils.dailPhone(v.getContext(), phone); break; case MotionEvent.ACTION_MOVE: break; case MotionEvent.ACTION_UP: break; } return true; } }); } else { phImage.setVisibility(View.GONE); textPhone.setVisibility(View.GONE); } LinearLayout htmllayout = (LinearLayout) view .findViewById(R.id.htmllayout); if (attractionData.getHtmlAttributions() != null &amp;&amp; !attractionData.getHtmlAttributions().equals("") &amp;&amp; !attractionData.getHtmlAttributions().equalsIgnoreCase( "null")) { htmllayout.setVisibility(View.VISIBLE); TextView htmlAttributions = (TextView) view .findViewById(R.id.htmlAttributions); TextView htmlAttributionsLink = (TextView) view .findViewById(R.id.htmlAttributionsLink); htmlAttributions.setText(attractionData.getHtmlAttributions()); htmlAttributionsLink.setText(attractionData .getHtmlAttributionsLink()); htmlAttributionsLink.setTag(attractionData); htmlAttributionsLink.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { AttractionData data = (AttractionData) ((TextView) v) .getTag(); utils.openWebURL(v.getContext(), data.getHtmlAttributionsUrl()); new Intent(Intent.ACTION_VIEW); return true; } }); } else { htmllayout.setVisibility(View.GONE); } // ********************************************* changing for showing // the zagat review and price level String priceTag = attractionData.getPriceTag(); String zagatReview = attractionData.getZagatReview(); Log.d(TAG, "Extra Parameter Setup : " + attractionData.getfName() + " URL : " + attractionData.getReviewUrl()); Log.d(TAG, "Extra Parameter Setup : priceTag : " + priceTag + " zagatReview : " + zagatReview); if (priceTag != null &amp;&amp; !priceTag.equals("")) { ((TextView) view.findViewById(R.id.pricelevelvalue)) .setText(priceTag); } else { view.findViewById(R.id.pricelevelvalue).setVisibility(View.GONE); } if (zagatReview != null &amp;&amp; !zagatReview.equals("")) { view.findViewById(R.id.moredetail_review).setVisibility( View.VISIBLE); ((TextView) view.findViewById(R.id.zagatreviewvalue)) .setText(zagatReview); } else { view.findViewById(R.id.moredetail_review).setVisibility(View.GONE); } Reservation reservation = attractionData.getReservation(); List&lt;PlaceMenu&gt; menus = attractionData.getMenu(); if ((reservation != null) || (menus != null &amp;&amp; !menus.isEmpty())) { view.findViewById(R.id.moredetail_menu_reservation).setVisibility( View.VISIBLE); TextView reservationTextView = (TextView) view .findViewById(R.id.reservationvalues); if (reservation != null &amp;&amp; reservation.getName() != null &amp;&amp; !reservation.getName().equals("")) { Log.d(TAG, "Extra Parameter Setup : reservation " + reservation.getName() + " URL : " + reservation.getUrl()); view.findViewById(R.id.reservation).setVisibility(View.VISIBLE); reservationTextView.setVisibility(View.VISIBLE); reservationTextView.setText(reservation.getName()); reservationTextView.setTag(reservation.getUrl()); reservationTextView.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { utils.openWebURL(v.getContext(), (String) ((TextView) v).getTag()); new Intent(Intent.ACTION_VIEW); return true; } }); } else { view.findViewById(R.id.reservation).setVisibility(View.GONE); reservationTextView.setVisibility(View.GONE); } TextView placemenuTextView = (TextView) view .findViewById(R.id.placemenu); if (menus != null &amp;&amp; !menus.isEmpty()) { Log.d(TAG, "Extra Parameter Setup : Menu Size : " + menus.size()); placemenuTextView.setVisibility(View.VISIBLE); placemenuTextView.setTag(menus); placemenuTextView.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: List&lt;PlaceMenu&gt; placeMenu = (List&lt;PlaceMenu&gt;) ((TextView) v).getTag(); ArrayList&lt;DialogData&gt; data = new ArrayList&lt;DialogData&gt;(); for (int i = 0; i &lt; placeMenu.size(); i++) { DialogData dialogData = new DialogData(); dialogData.setName(placeMenu.get(i).getName()); dialogData.setValue(placeMenu.get(i).getUrl()); dialogData.setType("url"); data.add(dialogData); } utils.showPopupDailog(v.getContext(), data, "Menu"); new Intent(Intent.ACTION_VIEW); break; case MotionEvent.ACTION_MOVE: break; case MotionEvent.ACTION_UP: break; } return true; } }); } else { placemenuTextView.setVisibility(View.GONE); } } else { view.findViewById(R.id.moredetail_menu_reservation).setVisibility( View.GONE); } if (attractionData.getHotelReview() != null) { PlaceHotelReview hotelReview = null; TextView textView = null; textView = (TextView) view.findViewById(R.id.hotelreviewtext); if (menuId != null &amp;&amp; menuId.equals(Constants.menuHotelId)) { textView.setText(R.string.hotelPricing); } else { textView.setText(R.string.hotelreview); } Log.d(TAG, "Hotel Review Step 02 : "); LinearLayout rl = (LinearLayout) view .findViewById(R.id.hotelreview); LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams( LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT); view.findViewById(R.id.hotelreview).setVisibility(View.VISIBLE); rl.removeAllViews(); rl.addView(textView, lp); for (int i = 0; i &lt; attractionData.getHotelReview().size(); i++) { hotelReview = attractionData.getHotelReview().get(i); Log.d(TAG, "Hotel Review Step 03 : " + hotelReview); textView = new TextView(activity); Log.d(TAG, "Hotel Review Step 04 : " + hotelReview.getName()); Log.d(TAG, "Hotel Review Step 05 : " + hotelReview.getReviews()); textView.setText(hotelReview.getName().replaceAll("\"", "")); if (i == attractionData.getHotelReview().size() - 1) { textView.setPadding(5, 5, 0, 5); } else if (i == attractionData.getHotelReview().size() - 1) { textView.setPadding(5, 0, 0, 5); } else { textView.setPadding(5, 5, 0, 0); } textView.setTextColor(Color.parseColor("#0000ff")); textView.setTag(hotelReview); Log.d(TAG, "Hotel Review Step 05 : "); textView.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: PlaceHotelReview hotelReview = (PlaceHotelReview) v.getTag(); utils.openWebURL(v.getContext(), hotelReview.getUrl().replaceAll("\"", "")); break; case MotionEvent.ACTION_MOVE: break; case MotionEvent.ACTION_UP: break; } return true; } }); rl.addView(textView, lp); } } else { view.findViewById(R.id.hotelreview).setVisibility(View.GONE); } TextView openCloseTime = (TextView) view .findViewById(R.id.openclosedesc); if (attractionData.getOpenCloseDesc() != null &amp;&amp; !attractionData.getOpenCloseDesc().equals("") &amp;&amp; !attractionData.getOpenCloseDesc().equalsIgnoreCase("null")) { openCloseTime.setText(attractionData.getOpenCloseDesc()); } else { openCloseTime.setVisibility(View.GONE); } itemlayer.setOnTouchListener(new DetectMotion(activity, isAddressBook)); if (position % 2 == 0) view.setBackgroundResource(R.drawable.listshape); else view.setBackgroundResource(R.drawable.favoritebody); return view; } private void focusLication(View v, MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: AttractionData ad = (AttractionData) v.getTag(); Constants.isMaptobeLoaded = true; if (ad.getLatitude() != 0 &amp;&amp; ad.getLongitude() != 0) { if (Constants.isDefineNeighbourHood) { if (Constants.focusLocationNH == null) { Constants.focusLocationNH = new Location(""); } Constants.focusLocationNH.setLatitude(ad.getLatitude()); Constants.focusLocationNH.setLongitude(ad.getLongitude()); if (Constants.myNeighborHoodLocation == null) { Constants.myNeighborHoodLocation = new Location(""); } Constants.myNeighborHoodLocation.setLatitude(ad .getLatitude()); Constants.myNeighborHoodLocation.setLongitude(ad .getLongitude()); } else { if (Constants.focusLocation == null) { Constants.focusLocation = new Location(""); } Constants.focusLocation.setLatitude(ad.getLatitude()); Constants.focusLocation.setLongitude(ad.getLongitude()); } activity.finish(); if (isAddressBook) { Constants.isPABImportant = true; activity.overridePendingTransition(R.anim.slide_in_left, R.anim.slide_out_left); } else { Constants.isPABImportant = false; activity.overridePendingTransition(R.anim.slide_out_right, R.anim.slide_in_right); } } break; case MotionEvent.ACTION_MOVE: break; case MotionEvent.ACTION_UP: break; } } </code></pre> <p>Any help is appreciated.</p>
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