Java tutorial
/* * Copyright (C) 2014 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package bluetoothchat; import android.app.Activity; import android.app.AlertDialog; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.content.Intent; import android.content.SharedPreferences; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Matrix; import android.graphics.PorterDuff; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.os.AsyncTask; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.preference.PreferenceManager; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.util.Log; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.view.inputmethod.EditorInfo; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.ImageView; import android.widget.RelativeLayout; import android.widget.TextView; import android.widget.Toast; import Database.Database; import main.MainActivity; import Steps.StepsFragment; import stickers.Sticker; import com.astuetz.viewpager.extensions.sample.R; import com.mingle.entity.MenuEntity; import com.mingle.sweetpick.DimEffect; import com.mingle.sweetpick.SweetSheet; import com.mingle.sweetpick.ViewPagerDelegate; import org.json.JSONException; import org.json.JSONObject; import java.util.ArrayList; import java.util.List; import java.util.ListIterator; /** * This fragment controls Bluetooth to communicate with other devices. */ public class BluetoothChatFragment extends Fragment { private static final String TAG = "BluetoothChatFragment"; private static final String ARG_POSITION = "position"; // Intent request codes private static final int REQUEST_CONNECT_DEVICE_SECURE = 1; private static final int REQUEST_CONNECT_DEVICE_INSECURE = 2; private static final int REQUEST_ENABLE_BT = 3; private ArrayList<MenuEntity> list = new ArrayList<>(); // Layout Views private Button mSendButton; private SweetSheet mSweetSheet3; private boolean givePic; private boolean getPic; private boolean otherAccepted; private boolean Iaccepted; private ImageView imageReceive; private ImageView imageGive; private String stickerNameGive; private String stickerNameRecieve; private boolean connectionLost; private boolean isHideAccept = false; private boolean isHideDecline = false; private StepsFragment.OnStickerChange notifyActivityStickerStatusChange; /** * Name of the connected device */ private String mConnectedDeviceName = null; /** * Array adapter for the conversation thread */ private ArrayAdapter<String> mConversationArrayAdapter; /** * String buffer for outgoing messages */ private StringBuffer mOutStringBuffer; /** * Local Bluetooth adapter */ private BluetoothAdapter mBluetoothAdapter = null; /** * Member object for the chat services */ private BluetoothChatService mChatService = null; private TextView statusTextView; private RelativeLayout rl; private Button btnAccept; private Button btnDecline; private Button btnEnableSwap; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); // Get local Bluetooth adapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); givePic = false; getPic = false; otherAccepted = false; Iaccepted = false; new setUpListStickers().execute(""); connectionLost = false; // If the adapter is null, then Bluetooth is not supported if (mBluetoothAdapter == null) { FragmentActivity activity = getActivity(); Toast.makeText(activity, "Bluetooth is not available", Toast.LENGTH_LONG).show(); activity.finish(); } } @Override public void onStart() { super.onStart(); // If BT is not on, request that it be enabled. // setupChat() will then be called during onActivityResult // if (!mBluetoothAdapter.isEnabled()) { // Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); // startActivityForResult(enableIntent, REQUEST_ENABLE_BT); // // Otherwise, setup the chat session // } else if (mChatService == null) { // setupChat(); // } } private void EnableBluetooth() { if (!mBluetoothAdapter.isEnabled()) { Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enableIntent, REQUEST_ENABLE_BT); // Otherwise, setup the chat session } else if (mChatService == null) { setupChat(); } } @Override public void onDestroy() { super.onDestroy(); if (mChatService != null) { mChatService.stop(); } } @Override public void onResume() { super.onResume(); // Performing this check in onResume() covers the case in which BT was // not enabled during onStart(), so we were paused to enable it... // onResume() will be called when ACTION_REQUEST_ENABLE activity returns. if (mChatService != null) { // Only if the state is STATE_NONE, do we know that we haven't started already if (mChatService.getState() == BluetoothChatService.STATE_NONE) { // Start the Bluetooth chat services mChatService.start(); } } } @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { return inflater.inflate(R.layout.fragment_bluetooth_chat, container, false); } @Override public void onAttach(Activity activity) { super.onAttach(activity); // This makes sure that the container activity has implemented // the callback interface. If not, it throws an exception try { notifyActivityStickerStatusChange = (StepsFragment.OnStickerChange) activity; } catch (ClassCastException e) { throw new ClassCastException(activity.toString() + " must implement OnHeadlineSelectedListener"); } } @Override public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { statusTextView = (TextView) view.findViewById(R.id.bluetoothStatus); imageGive = (ImageView) view.findViewById(R.id.imageViewGive); imageReceive = (ImageView) view.findViewById(R.id.imageView2); btnAccept = (Button) view.findViewById(R.id.imageButton); btnDecline = (Button) view.findViewById(R.id.imageButton2); rl = (RelativeLayout) view.findViewById(R.id.rlBlth); btnEnableSwap = (Button) view.findViewById(R.id.enableSwap); if (mBluetoothAdapter.isEnabled()) btnEnableSwap.setText("Connect a device"); btnEnableSwap.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { //enable bluetooth if not enabled if (!mBluetoothAdapter.isEnabled()) { EnableBluetooth(); } else { // Launch the DeviceListActivity to see devices and do scan Intent serverIntent = new Intent(getActivity(), DeviceListActivity.class); startActivityForResult(serverIntent, REQUEST_CONNECT_DEVICE_SECURE); } } }); btnAccept.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { Iaccepted = true; imageGive.buildDrawingCache(); imageGive.setImageBitmap(bitmapOverlay(imageGive.getDrawingCache())); sendMessage(toJSon("accept", null, true)); //if both accepted change the sticker status if (otherAccepted) { changeStickerdbStatus(stickerNameRecieve, false); changeStickerdbStatus(stickerNameGive, true); resultGUI("The stickers were successfully swapped", true); notifyActivityStickerStatusChange.notifyChange(); new setUpListStickers().execute(""); setupCustomView(); updateSwapCount(); } } }); btnDecline.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { resultGUI("The stickers were not swapped, Transaction was cancelled", false); sendMessage(toJSon("accept", null, false)); } }); rl.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { if (mChatService == null) Toast.makeText(getActivity(), "Connect to a device first", Toast.LENGTH_LONG).show(); } }); btnAccept.getBackground().setColorFilter(Color.GRAY, PorterDuff.Mode.SRC_IN); btnDecline.getBackground().setColorFilter(Color.GRAY, PorterDuff.Mode.SRC_IN); // if(! mBluetoothAdapter.isEnabled()) btnAccept.setVisibility(View.INVISIBLE); btnDecline.setVisibility(View.INVISIBLE); if (rl == null) android.util.Log.d("HEREEEE", "IT IS NUULLL"); else { android.util.Log.d("HEREEEE", " not null"); } view.findViewById(R.id.imageViewGive).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (mChatService != null && connectionLost == false) { if (!otherAccepted && (!Iaccepted || otherAccepted)) { if (list.size() != 0) { setupCustomView(); mSweetSheet3.toggle(); //nasty hack to bring the buttons to the background //otherwise they go on top of the sweetSheet if (mSweetSheet3.isShow()) { if (btnAccept.isEnabled()) { isHideAccept = true; btnAccept.setEnabled(false); } if (btnDecline.isEnabled()) { isHideDecline = true; btnDecline.setEnabled(false); } } else { if (isHideAccept) { isHideAccept = false; btnAccept.setEnabled(true); } if (isHideDecline) { isHideDecline = false; btnDecline.setEnabled(true); } } } else { Toast.makeText(getActivity(), "You don't have any stickers to swap", Toast.LENGTH_LONG) .show(); } } } else { Toast.makeText(getActivity(), "Connect to a device first", Toast.LENGTH_LONG).show(); } } ; }); } private void updateSwapCount() { SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getActivity()); int count = prefs.getInt("swap count", 0); prefs.edit().putInt("swap count", count + 1).apply(); } //update the list in asyncTask private class setUpListStickers extends AsyncTask<String, Void, String> { @Override protected String doInBackground(String... params) { list.clear(); Database db = Database.getInstance(getActivity()); List<Sticker> stickers = db.getStickersWithCountGreatherOrEqualTo(1); android.util.Log.d("File id ", Integer.toString(stickers.size())); for (ListIterator<Sticker> iter = stickers.listIterator(); iter.hasNext();) { Sticker element = iter.next(); String file = element.getImagesrc(); file = file.substring(0, file.lastIndexOf(".")); //trim the extension android.util.Log.d("File ", file); Resources resources = getActivity().getResources(); int resourceId = resources.getIdentifier(file, "drawable", getActivity().getPackageName()); //set the sampled sized of the image with the given dimensions Bitmap image = decodeSampledBitmapFromResource(getResources(), resourceId, 30, 30); Drawable drawable = new BitmapDrawable(getResources(), image); MenuEntity menuEntity1 = new MenuEntity(); menuEntity1.icon = drawable; menuEntity1.title = element.getName(); list.add(menuEntity1); } db.close(); return "Executed"; } } private void resultGUI(String message, boolean success) { givePic = false; getPic = false; otherAccepted = false; Iaccepted = false; imageGive.setImageResource(R.drawable.questionmark); imageReceive.setImageResource(R.drawable.questionmark); btnAccept.getBackground().setColorFilter(Color.GRAY, PorterDuff.Mode.SRC_IN); btnDecline.getBackground().setColorFilter(Color.GRAY, PorterDuff.Mode.SRC_IN); btnAccept.setEnabled(false); btnDecline.setEnabled(false); showAlertDialog("Result Message", message, success); } /** * Set up the UI and background operations for chat. */ private void setupChat() { Log.d(TAG, "setupChat()"); // Initialize the array adapter for the conversation thread mConversationArrayAdapter = new ArrayAdapter<String>(getActivity(), R.layout.message); // mConversationView.setAdapter(mConversationArrayAdapter); // Initialize the compose field with a listener for the return key // Initialize the BluetoothChatService to perform bluetooth connections mChatService = new BluetoothChatService(getActivity(), mHandler); // Initialize the buffer for outgoing messages mOutStringBuffer = new StringBuffer(""); } /** * Makes this device discoverable. */ public void ensureDiscoverable() { if (mBluetoothAdapter.getScanMode() != BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE) { Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE); discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300); startActivity(discoverableIntent); } } /** * Sends a message. * * @param message A string of text to send. */ private void sendMessage(String message) { // Check that we're actually connected before trying anything if (mChatService.getState() != BluetoothChatService.STATE_CONNECTED) { Toast.makeText(getActivity(), R.string.not_connected, Toast.LENGTH_SHORT).show(); return; } // Check that there's actually something to send if (message.length() > 0) { // Get the message bytes and tell the BluetoothChatService to write byte[] send = message.getBytes(); mChatService.write(send); // Reset out string buffer to zero and clear the edit text field mOutStringBuffer.setLength(0); } } /** * The action listener for the EditText widget, to listen for the return key */ private TextView.OnEditorActionListener mWriteListener = new TextView.OnEditorActionListener() { public boolean onEditorAction(TextView view, int actionId, KeyEvent event) { // If the action is a key-up event on the return key, send the message if (actionId == EditorInfo.IME_NULL && event.getAction() == KeyEvent.ACTION_UP) { String message = view.getText().toString(); sendMessage(message); } return true; } }; /** * Updates the status on the action bar. * * @param resId a string resource ID */ private void setStatus(int resId) { android.util.Log.i("BLUETOOTH", "SubTitle2"); statusTextView.setText(resId); } /** * Updates the status on the action bar. * * @param subTitle status */ private void setStatus(CharSequence subTitle) { android.util.Log.i("BLUETOOTH", "SubTitle"); statusTextView.setText(subTitle); } /** * The Handler that gets information back from the BluetoothChatService */ private final Handler mHandler = new Handler() { @Override public void handleMessage(Message msg) { FragmentActivity activity = getActivity(); switch (msg.what) { case Constants.MESSAGE_STATE_CHANGE: switch (msg.arg1) { case BluetoothChatService.STATE_CONNECTED: setStatus(getString(R.string.title_connected_to, mConnectedDeviceName)); mConversationArrayAdapter.clear(); btnEnableSwap.setVisibility(View.GONE); btnAccept.setVisibility(View.VISIBLE); btnDecline.setVisibility(View.VISIBLE); btnAccept.setEnabled(false); btnDecline.setEnabled(false); break; case BluetoothChatService.STATE_CONNECTING: setStatus(R.string.title_connecting); break; case BluetoothChatService.STATE_LISTEN: case BluetoothChatService.STATE_NONE: setStatus(R.string.title_not_connected); btnEnableSwap.setVisibility(View.VISIBLE); btnAccept.setVisibility(View.GONE); btnDecline.setVisibility(View.GONE); btnAccept.setEnabled(false); btnDecline.setEnabled(false); break; } break; case Constants.MESSAGE_WRITE: byte[] writeBuf = (byte[]) msg.obj; // construct a string from the buffer String writeMessage = new String(writeBuf); mConversationArrayAdapter.add("Me: " + writeMessage); break; case Constants.MESSAGE_READ: byte[] readBuf = (byte[]) msg.obj; // construct a string from the valid bytes in the buffer String readMessage = new String(readBuf, 0, msg.arg1); fromJSon(readMessage); break; case Constants.MESSAGE_DEVICE_NAME: // save the connected device's name mConnectedDeviceName = msg.getData().getString(Constants.DEVICE_NAME); if (null != activity) { Toast.makeText(activity, "Connected to " + mConnectedDeviceName, Toast.LENGTH_SHORT).show(); connectionLost = false; } break; //this is used when disconnection event happens case Constants.MESSAGE_TOAST: if (null != activity) { Toast.makeText(activity, msg.getData().getString(Constants.TOAST), Toast.LENGTH_SHORT).show(); Log.d("HEREE", "Disconestion"); if (msg.getData().getString(Constants.TOAST).equals("Device connection was lost")) { connectionLost = true; Log.d("Print lost connection", "Lost connection"); resultGUI("Sorry, device connection was lost", false); } } break; } } }; public void onActivityResult(int requestCode, int resultCode, Intent data) { switch (requestCode) { case REQUEST_CONNECT_DEVICE_SECURE: // When DeviceListActivity returns with a device to connect if (resultCode == Activity.RESULT_OK) { connectDevice(data, true); } break; case REQUEST_CONNECT_DEVICE_INSECURE: // When DeviceListActivity returns with a device to connect if (resultCode == Activity.RESULT_OK) { connectDevice(data, false); } break; case REQUEST_ENABLE_BT: // When the request to enable Bluetooth returns if (resultCode == Activity.RESULT_OK) { btnEnableSwap.setText("Connect a device"); // Bluetooth is now enabled, so set up a chat session setupChat(); } else { // User did not enable Bluetooth or an error occurred Log.d(TAG, "BT not enabled"); Toast.makeText(getActivity(), R.string.bt_not_enabled_leaving, Toast.LENGTH_SHORT).show(); // getActivity().finish(); } } } /** * Establish connection with other divice * * @param data An {@link Intent} with {@link DeviceListActivity#EXTRA_DEVICE_ADDRESS} extra. * @param secure Socket Security type - Secure (true) , Insecure (false) */ private void connectDevice(Intent data, boolean secure) { // Get the device MAC address String address = data.getExtras().getString(DeviceListActivity.EXTRA_DEVICE_ADDRESS); // Get the BluetoothDevice object BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address); // Attempt to connect to the device //in case blth is enabled prior the start of the application init mChatService if (mChatService == null) setupChat(); mChatService.connect(device, secure); } public boolean onOptionsItemSelectedPrivate(MenuItem item) { switch (item.getItemId()) { case R.id.discoverable: { // Ensure this device is discoverable by others ensureDiscoverable(); return true; } default: return ((MainActivity) getActivity()).optionsItemSelected(item); } } public static BluetoothChatFragment newInstance(int i) { BluetoothChatFragment f = new BluetoothChatFragment(); Bundle b = new Bundle(); b.putInt(ARG_POSITION, i); f.setArguments(b); return f; } /** * overllay a tick on the underlaying sticker image * @param bmp1 sticker image * @return */ private Bitmap bitmapOverlay(Bitmap bmp1) { Bitmap bmp2 = BitmapFactory.decodeResource(getResources(), R.drawable.accept2); Bitmap bmOverlay = Bitmap.createBitmap(bmp1.getWidth(), bmp1.getHeight(), bmp1.getConfig()); Canvas canvas = new Canvas(bmOverlay); canvas.drawBitmap(bmp1, new Matrix(), null); canvas.drawBitmap(bmp2, new Matrix(), null); return bmOverlay; } public static Bitmap decodeSampledBitmapFromResource(Resources res, int resId, int reqWidth, int reqHeight) { // First decode with inJustDecodeBounds=true to check dimensions final BitmapFactory.Options options = new BitmapFactory.Options(); options.inJustDecodeBounds = true; BitmapFactory.decodeResource(res, resId, options); // Calculate inSampleSize options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight); // Decode bitmap with inSampleSize set options.inJustDecodeBounds = false; return BitmapFactory.decodeResource(res, resId, options); } public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) { // Raw height and width of image final int height = options.outHeight; final int width = options.outWidth; int inSampleSize = 1; if (height > reqHeight || width > reqWidth) { final int halfHeight = height / 2; final int halfWidth = width / 2; // Calculate the largest inSampleSize value that is a power of 2 and keeps both // height and width larger than the requested height and width. while ((halfHeight / inSampleSize) > reqHeight && (halfWidth / inSampleSize) > reqWidth) { inSampleSize *= 2; } } return inSampleSize; } public void setupCustomView() { mSweetSheet3 = null; mSweetSheet3 = new SweetSheet(rl); //menu mSweetSheet3.setMenuList(list); mSweetSheet3.setDelegate(new ViewPagerDelegate()); mSweetSheet3.setBackgroundEffect(new DimEffect(8f)); mSweetSheet3.setOnMenuItemClickListener(new SweetSheet.OnMenuItemClickListener() { @Override public boolean onItemClick(int position, MenuEntity menuEntity1) { givePic = true; imageGive.setImageResource(getImageResourceIdForStickerName(String.valueOf(menuEntity1.title))); imageGive.buildDrawingCache(); stickerNameGive = String.valueOf(menuEntity1.title); //send message, make it Json object and convert id to string sendMessage(toJSon("giveSticker", String.valueOf(menuEntity1.title), null)); // Toast.makeText(getActivity(), menuEntity1.title + " " +menuEntity1.icon, Toast.LENGTH_SHORT).show(); return true; } }); } private int getImageResourceIdForStickerName(String stickerName) { Database db = Database.getInstance(getActivity()); Sticker sticker = db.getStickerForName(String.valueOf(stickerName)); String file = sticker.getImagesrc(); Resources resources = getActivity().getResources(); //trim the extension file = file.substring(0, file.lastIndexOf(".")); return resources.getIdentifier(file, "drawable", getActivity().getPackageName()); } public boolean backPressed() { if (mSweetSheet3 != null && mSweetSheet3.isShow()) { mSweetSheet3.dismiss(); return false; } else { return true; } } public String toJSon(String type, String str, Boolean accept) { JSONObject jsonObject = new JSONObject(); try { if (type.equals("giveSticker")) { jsonObject.put("giveSticker", str); givePic = true; if (givePic && getPic) { btnAccept.getBackground().setColorFilter(null); btnDecline.getBackground().setColorFilter(null); btnAccept.setEnabled(true); btnDecline.setEnabled(true); } } if (type.equals("accept")) jsonObject.put("accept", accept); } catch (JSONException e) { e.printStackTrace(); } return jsonObject.toString(); } public String fromJSon(String data) { String stickername = null; Boolean accept = null; try { JSONObject jObj = new JSONObject(data); if (jObj.has("giveSticker")) { getPic = true; stickername = jObj.getString("giveSticker"); imageReceive.setImageResource(getImageResourceIdForStickerName(stickername)); imageReceive.buildDrawingCache(); stickerNameRecieve = stickername; mConversationArrayAdapter.add(mConnectedDeviceName + ": " + data); if (givePic && getPic) { btnAccept.getBackground().setColorFilter(null); btnDecline.getBackground().setColorFilter(null); btnAccept.setEnabled(true); btnDecline.setEnabled(true); } if (getPic) { btnDecline.setEnabled(true); btnDecline.getBackground().setColorFilter(null); } } if (jObj.has("accept")) { accept = jObj.getBoolean("accept"); if (accept) { otherAccepted = true; mConversationArrayAdapter.add(mConnectedDeviceName + ": " + data); imageReceive.buildDrawingCache(); imageReceive.setImageBitmap(bitmapOverlay(imageReceive.getDrawingCache())); //if both has accepted do the swap if (Iaccepted) { changeStickerdbStatus(stickerNameGive, true); changeStickerdbStatus(stickerNameRecieve, false); resultGUI("The stickers were successfully swapped", true); notifyActivityStickerStatusChange.notifyChange(); new setUpListStickers().execute(""); setupCustomView(); updateSwapCount(); } } else { resultGUI("The stickers were not swapped, Transaction was cancelled", false); } } } catch (JSONException e) { e.printStackTrace(); } return stickername; } private void changeStickerdbStatus(String stickername, boolean give) { Database db = Database.getInstance(getActivity()); Sticker sticker_1 = db.getStickerForName(stickername); //give if (give) { if (sticker_1.getCount() == 1) { db.updateStatus(sticker_1.getId(), 0); db.updateCount(sticker_1.getId(), "decrease"); } else { db.updateCount(sticker_1.getId(), "decrease"); } } else { //receive if (sticker_1.getCount() == 0) { db.updateStatus(sticker_1.getId(), 1); db.updateCount(sticker_1.getId(), "increase"); } else { db.updateCount(sticker_1.getId(), "increase"); } } db.close(); } /** * Function to display simple Alert Dialog * @param title - alert dialog title * @param message - alert message * @param status - success/failure (used to set icon) * */ public void showAlertDialog(String title, String message, Boolean status) { AlertDialog.Builder builder = new AlertDialog.Builder(getActivity(), R.style.AppCompatAlertDialogStyle); builder.setTitle(title); builder.setMessage(message); builder.setPositiveButton("OK", null); // Setting Dialog Message builder.setMessage(message); // Setting alert dialog icon builder.setIcon((status) ? R.drawable.success : R.drawable.fail); builder.show(); } //recieve listChange from the mainActivity public void updateList() { new setUpListStickers().execute(""); } }