GCM MultiCastResult Approach - android

This is my approach to use gcm for more than 1000 devices. Is it right that way? As I cannot try it unless I have more than 1000 users so any feedback would be appreciated and most importantly am I checking errors correctly? and updating database in a right way?
public class MessagingEndpoint {
private static final Logger log = Logger.getLogger(MessagingEndpoint.class.getName());
/**
* Api Keys can be obtained from the google cloud console
*/
private static final String API_KEY = System.getProperty("gcm.api.key");
private List<RegistrationRecord> records;
private List<String> getRegistrationId() {
records = ofy().load().type(RegistrationRecord.class).list();
List<String> records_ID = new ArrayList<String>();
for (int i = 0; i < records.size(); i++) {
records_ID.add(records.get(i).getRegId());
}
return records_ID;
}
private List<List<String>> regIdInThousands(List<String> list, final int L) {
List<List<String>> parts = new ArrayList<List<String>>();
final int N = list.size();
for (int i = 0; i < N; i += L) {
parts.add(new ArrayList<String>(list.subList(i, Math.min(N, i + L))));
}
return parts;
}
*
* #param message The message to send
*/
public void sendMessage(#Named("message") String message) throws IOException {
if (message == null || message.trim().length() == 0) {
log.warning("Not sending message because it is empty");
return;
}
// crop longer messages
if (message.length() > 1000) {
message = message.substring(0, 1000) + "[...]";
}
Sender sender = new Sender(API_KEY);
Message msg = new Message.Builder().addData("message", message).build();
List<List<String>> regIdsParts = regIdInThousands(getRegistrationId(), 1000);
for (int i = 0; i < regIdsParts.size(); i++) {
MulticastResult multicastResult = sender.send(msg, regIdsParts.get(i), 5);
if (multicastResult.getCanonicalIds() != 0) {
List<Result> results = multicastResult.getResults();
for (int j = 0; j < results.size(); j++) {
if (results.get(j).getMessageId() != null) {
log.info("Message sent to " + regIdsParts.get(i).get(j));
String canonicalRegId = results.get(j).getCanonicalRegistrationId();
if (canonicalRegId != null) {
// if the regId changed, we have to update the datastore
log.info("Registration Id changed for " + regIdsParts.get(i).get(j) + " updating to " + canonicalRegId);
regIdsParts.get(i).set(j, canonicalRegId);
ofy().save().entity(records.get((i*1000)+j)).now();
} else {
String error = results.get(j).getErrorCodeName();
if (error.equals(Constants.ERROR_NOT_REGISTERED)) {
log.warning("Registration Id " + regIdsParts.get(i).get(j) + " no longer registered with GCM, removing from datastore");
// if the device is no longer registered with Gcm, remove it from the datastore
ofy().delete().entity(records.get((i*1000)+j)).now();
} else {
log.warning("Error when sending message : " + error);
}
}
}
}
}
}
}
}

Your code looks good, Only thing I can notice is its quite verbose and complicated. You can take a look at this one just as a option if you are considerate about error handling:
public void sendMessageToMultipleDevices(String key, String value, ArrayList devices) {
Sender sender = new Sender(myApiKey);
Message message = new Message.Builder().addData(key, value).build();
try {
MulticastResult result = sender.send(message, devices, 5);
MTLog.info(TAG, "result " + result.toString());
for (int i = 0; i < result.getTotal(); i++) {
Result r = result.getResults().get(i);
if (r.getMessageId() != null) {
String canonicalRegId = r.getCanonicalRegistrationId();
if (canonicalRegId != null) {
// devices.get(i) has more than on registration ID: update database
}
} else {
String error = r.getErrorCodeName();
if (error.equals(Constants.ERROR_NOT_REGISTERED)) {
// application has been removed from devices.get(i) - unregister database
}
}
}
} catch (IOException ex) {
MTLog.err(TAG, "sending message failed", ex);
}
}

Related

IndexOutOfRangeException: Array index is out of range. DataCache.GetAchievementCacheData () (at Assets/Scripts/Mission/Plugin/DataCache.cs:329)

When I run the game using unity I get this error continuously in the console window and the loading screen is not going further next. Help me to fix this issue.
IndexOutOfRangeException: Array index is out of range.
DataCache.GetAchievementCacheData () (at
Assets/Scripts/Mission/Plugin/DataCache.cs:329)
Here is my code below
using System.IO;
using System.Security.Cryptography;
using System.Text;
using System.Xml;
using System.Xml.Serialization;
using UnityEngine;
//Class luu mission current
public class CurrentMission
{
public string FB_id { get; set; }
public string Name { get; set; }
public string Mission { get; set; }
public CurrentMission(string id, string name, string mission)
{
this.FB_id = id;
this.Name = name;
this.Mission = mission;
}
public CurrentMission()
{
this.FB_id = "";
this.Name = "";
this.Mission = "";
}
}
public class MissionDataSave
{
public int Mission;
public long Score;
public int Star;
public int Open;//0-false. 1-true
public MissionDataSave(int mission, long score, int star, int open)
{
Mission = mission;
Score = score;
Star = star;
Open = open;
}
public MissionDataSave()
{
Mission = 0;
Score = 0;
Star = 0;
Open = 0;
}
}
public class AchievementCache
{
//group nhiem vu
public int Group;
//Level hien tai cua group
public int Level;
//Gia tri hien tai
public int Value;
//Thong bao mission hoan thanh
public int Notify;//0 - False, 1 - true
//public AchievementCache()
//{
// this.Group = 1;
// this.Level = 1;
// this.Value = 0;
//}
public AchievementCache(int group, int level, int value, int notify)
{
this.Group = group;
this.Value = value;
this.Level = level;
this.Notify = notify;
}
public AchievementCache()
{
this.Group = 1;
this.Value = 0;
this.Level = 1;
this.Notify = 0;
}
}
public class DataCache
{
public static string FB_ID = "FB_ID";
public static string FB_USER = "FB_USER";
public static string Achievement_data_key = "Achievement_data_key";
public static string Mission_data_key = "Mission_data_key";
public static string Current_mission_data_key = "Current_mission_data_key";
public static AchievementCache[] dataAchievementCache;
public static MissionDataSave[] dataMissionCache;
public static CurrentMission[] dataCurrentMissionCache;
//public static string XML_Current_Mission_Path = "CurrentMissionSave.xml";
//public static string XML_Data_Mission_Path = "DataMissionSave.xml";
//public static string XML_Data_Achievement_Path = "AchievementCache.xml";
//serialize xml theo tung phan tu
//public static List<MissionDataSave> DeserializeMissionDataSaveListFromXML(string filePath)
//{
// if (!System.IO.File.Exists(filePath))
// {
// Debug.LogError("File " + filePath + " not exist!");
// return new List<MissionDataSave>();
// }
// XmlSerializer deserializer = new XmlSerializer(typeof(List<MissionDataSave>), new XmlRootAttribute("MissionDataSaveRoot"));
// TextReader textReader = new StreamReader(filePath);
// List<MissionDataSave> movies = (List<MissionDataSave>)deserializer.Deserialize(textReader);
// textReader.Close();
// return movies;
//}
//public static void readXMLTest()
//{
// string xmlDataCache1 = Application.persistentDataPath + "/" + XML_Current_Mission_Path;
// TextReader textReader = new StreamReader(xmlDataCache1);
// XmlDocument xmlDoc = new XmlDocument();
// xmlDoc.Load(textReader);
// XmlNodeList xmlNodeList = xmlDoc.DocumentElement.ChildNodes;
// Debug.Log("TRUOC");
// foreach (XmlNode node in xmlNodeList)
// {
// Debug.Log("aaaaaaaaaaaaaaaaaaaaa " + node.Attributes["Id"].Value);
// }
// Debug.Log("SAU");
// XmlNode root = xmlDoc.DocumentElement;
// XmlElement elem = xmlDoc.CreateElement("CurrentMissionCache");
// elem.SetAttribute("Id", "112312");
// elem.SetAttribute("Name", "NameDG");
// elem.SetAttribute("Mission", "MissionDG");
// root.AppendChild(elem);
// textReader.Close();
// xmlDoc.Save(xmlDataCache1);
//}
//Add mission xml node
public static void UpdateMissionScore(long score, int star, int mission, int open)
{
MissionDataSave data = dataMissionCache[mission - 1];
if (data.Star < star)
{
data.Star = star;
}
if (data.Score < score)
{
data.Score = score;
}
data.Open = open;
}
public static void SaveMissionDataCache(bool submitToServer = false)
{
string dataSave = "";
string dataSendServer = "";
for (int i = 0; i < dataMissionCache.Length; i++)
{
dataSave += dataMissionCache[i].Mission + "-" + dataMissionCache[i].Score + "-" + dataMissionCache[i].Star + "-" + dataMissionCache[i].Open + ",";
//Chi gui nhung mission da open len server
if (dataMissionCache[i].Open == 1)
{
if (dataSendServer.Length > 0)
dataSendServer += ",";
dataSendServer += dataMissionCache[i].Mission + "-" + dataMissionCache[i].Score + "-" + dataMissionCache[i].Star + "-" + dataMissionCache[i].Open;
}
}
Debug.Log("Data save " + dataSave);
PlayerPrefs.SetString(Mission_data_key, dataSave);
if (submitToServer)
{
Debug.Log("Data send server " + dataSendServer);
AudioControl.getMonoBehaviour().StartCoroutine(DHS.PostMeInfoMissionUpdate(FB.UserId, dataSendServer));
}
}
public static void GetMissionDataCache()
{
int max_mission = 100;
if (dataMissionCache != null)
{
dataMissionCache = null;
}
dataMissionCache = new MissionDataSave[max_mission];
//Tao moi neu chua co
if (!PlayerPrefs.HasKey(Mission_data_key))
{
string datas = "1-0-0-1,";
for (int i = 2; i <= max_mission; i++)
{
//Mission - Score - Star - Open
if (DataMissionControlNew.test)
{
datas += i + "-0-0-1,";
//if (i < 16)
// datas += i + "-0-0-1,";
//else datas += i + "-0-0-0,";
}
else
{
datas += i + "-0-0-0,";
}
}
PlayerPrefs.SetString(Mission_data_key, datas);
}
string missionData = PlayerPrefs.GetString(Mission_data_key);
string[] data = missionData.Split(',');
for (int i = 0; i < max_mission; i++)
{
string[] infoData = data[i].Split('-');
//Debug.Log("Info " + data[i]);
string mission = infoData[0];
string score = infoData[1];
string star = infoData[2];
string open = infoData[3];
dataMissionCache[i] = new MissionDataSave(Convert.ToUInt16(mission), Convert.ToUInt32(score), Convert.ToUInt16(star), Convert.ToUInt16(open));
}
}
//-------------------------CURRENT MISSION---------------------------
//Add current mission xml node
public static void SaveCurrentMission(string data = "")
{
if (String.IsNullOrEmpty(data))
{
string dataSave = "";
for (int i = 0; i < dataCurrentMissionCache.Length; i++)
{
if (dataSave.Length > 0)
dataSave += ",";
dataSave += dataCurrentMissionCache[i].FB_id + "-" + dataCurrentMissionCache[i].Name + "-" + dataCurrentMissionCache[i].Mission;
}
PlayerPrefs.SetString(Current_mission_data_key, dataSave);
}
else
{
PlayerPrefs.SetString(Current_mission_data_key, data);
GetCurrentMission();
}
}
public static void GetCurrentMission()
{
if (!PlayerPrefs.HasKey(Current_mission_data_key))
{
PlayerPrefs.SetString(Current_mission_data_key, "Me-User-1");
}
if (dataCurrentMissionCache != null)
{
dataCurrentMissionCache = null;
}
string current_data = PlayerPrefs.GetString(Current_mission_data_key);
string[] data = current_data.Split(',');
dataCurrentMissionCache = new CurrentMission[data.Length];
for (int i = 0; i < data.Length; i++)
{
string[] info = data[i].Split('-');
//fb - User name - missison
dataCurrentMissionCache[i] = new CurrentMission(info[0], info[1], info[2]);
}
}
public static void SetMeCurrentMission(int mission)
{
for (int i = 0; i < DataCache.dataCurrentMissionCache.Length; i++)
{
if ("Me".Equals(DataCache.dataCurrentMissionCache[i].FB_id))
{
int old = Convert.ToInt16(DataCache.dataCurrentMissionCache[i].Mission);
if (old < mission)
{
DataCache.dataCurrentMissionCache[i].Mission = "" + mission;
DataCache.UpdateMissionScore(0, 0, mission, 1);//Them mission moi vao xml
}
}
}
DataCache.SaveCurrentMission();
}
//-------------------------ACHIEVEMENT---------------------------
//Ghi de len du lieu cu
public static void ReplaceAchievementCache(int groupLevel, int value, int level = -1)
{
dataAchievementCache[groupLevel - 1].Value = value;
if (level != -1)
{
dataAchievementCache[groupLevel - 1].Level = level;
}
}
//Cap nhat them du lieu
public static void AddAchievementCache(int groupLevel, int addValue, int addLevel = 0)
{
dataAchievementCache[groupLevel - 1].Level += addLevel;
dataAchievementCache[groupLevel - 1].Value += addValue;
}
public static void GetAchievementCacheData()
{
Debug.Log("-------------GetAchievementCacheData--------------------");
if (dataAchievementCache != null)
{
dataAchievementCache = null;
}
dataAchievementCache = new AchievementCache[22];
//Tao achievement
if (!PlayerPrefs.HasKey(Achievement_data_key))
{
string achi = "";
for (int i = 1; i <= 22; i++)
{
achi += i + "-1-0-0,";
}
//Debug.Log("Create new achievement " + achi);
PlayerPrefs.SetString(Achievement_data_key, achi);
}
string achievement = PlayerPrefs.GetString(Achievement_data_key);
//Debug.Log(achievement);
string[] achie = achievement.Split(',');
for (int i = 0; i< dataAchievementCache.Length; i++)
{
//Debug.Log(achie[i]);
string[] infoAchie = achie[i].Split('-');
string group = infoAchie[0];
string level = infoAchie[1];
string value = infoAchie[2];
string notify = infoAchie[3];
//Debug.Log(group +" " + dataAchievementCache[i].Group);
dataAchievementCache[i] = new AchievementCache();
dataAchievementCache[i].Group = Convert.ToInt16(group);
dataAchievementCache[i].Level = Convert.ToInt16(level);
dataAchievementCache[i].Value = Convert.ToInt32(value);
dataAchievementCache[i].Notify = Convert.ToInt16(notify);
}
}
public static void SaveAchievementCache(bool sendServer = false)
{
try
{
Debug.Log("-------------------SaveAchievementCache-----------------");
if (dataAchievementCache != null)
{
string achievement = "";
for (int i = 0; i < dataAchievementCache.Length; i++)
{
string s = "" + dataAchievementCache[i].Group + "-" + dataAchievementCache[i].Level + "-" + dataAchievementCache[i].Value + "-" + dataAchievementCache[i].Notify + ",";
achievement += s;
}
//Debug.Log("----------LUU ACHIEVEMENT------------ " + achievement);
PlayerPrefs.SetString(Achievement_data_key, achievement);
if (FB.IsLoggedIn && sendServer)
{
//Nếu chưa có playerprefs thì sẽ submit lên luôn
//Nếu có rồi thì phải check nó cập nhật hoàn thành từ server về thì mới cho up lên
bool check = !PlayerPrefs.HasKey(DataMissionControlNew.key_update_achievement_data_from_server) ||
(PlayerPrefs.HasKey(DataMissionControlNew.key_update_achievement_data_from_server) && PlayerPrefs.GetInt(DataMissionControlNew.key_update_achievement_data_from_server) == 1);
if (check)
{
AudioControl.getMonoBehaviour().StartCoroutine(DHS.PostMeInfoUpdate(DFB.UserId, "" + VariableSystem.diamond, "" + achievement, "", (www) =>
{
Debug.Log("----------Update achievement to server success!------------- " + achievement);
}));
}
else
{
Debug.Log("----------KHONG CHO UP ACHIEVEMENT VA DIAMOND LEN SERVER------------- " + PlayerPrefs.GetInt(DataMissionControlNew.key_update_mission_data_from_server, 0));
}
}
}
}
catch (Exception e)
{
Debug.Log("------------ERROR ---------------" + e.Message);
if (DataMissionControlNew.test)
{
MobilePlugin.getInstance().ShowToast("ERROR " + e.Message);
}
}
}
public static void DeleteUserData()
{
PlayerPrefs.DeleteKey(FB_ID);
PlayerPrefs.DeleteKey(Mission_data_key);
PlayerPrefs.DeleteKey(Current_mission_data_key);
PlayerPrefs.DeleteKey(Achievement_data_key);
PlayerPrefs.DeleteKey("diamond");
PlayerPrefs.DeleteKey(DataMissionControlNew.key_update_mission_data_from_server);
VariableSystem.diamond = 8;
VariableSystem.heart = 5;
}
public static void RestoreUserData(int diamond, string achievement)
{
Debug.Log("Restore user data");
VariableSystem.diamond = diamond;
VariableSystem.heart = PlayerPrefs.GetInt("heart", 5);
string[] achie = achievement.Split(',');
if (achie.Length > 5)
{
for (int i = 0; i < dataAchievementCache.Length; i++)
{
string[] infoAchie = achie[i].Split('-');
string group = infoAchie[0];
string level = infoAchie[1];
string value = infoAchie[2];
string notify = infoAchie[3];
dataAchievementCache[i].Group = Convert.ToInt16(group);
dataAchievementCache[i].Level = Convert.ToInt16(level);
dataAchievementCache[i].Value = Convert.ToInt32(value);
dataAchievementCache[i].Notify = Convert.ToInt16(notify);
}
//Debug.Log("---Luu achievement----");
SaveAchievementCache();
GetAchievementCacheData();
}
Debug.Log("----------------ACHIEVEMENT da dc cap nhat tu -----------------");
PlayerPrefs.SetInt(DataMissionControlNew.key_update_achievement_data_from_server, 1);
}
The line 329 is this
string level = infoAchie[1];
The problem is coming from the last comma you are adding in the string you are adding to your PlayerPrefs in this part:
if (!PlayerPrefs.HasKey(Achievement_data_key))
{
string achi = "";
for (int i = 1; i <= 22; i++)
{
achi += i + "-1-0-0,";
}
//Debug.Log("Create new achievement " + achi);
PlayerPrefs.SetString(Achievement_data_key, achi);
}
This code generates this string:
1-1-0-0,2-1-0-0,3-1-0-0,4-1-0-0,5-1-0-0,6-1-0-0,7-1-0-0,8-1-0-0,9-1-0-0,10-1-0-0,11-1-0-0,12-1-0-0,13-1-0-0,14-1-0-0,15-1-0-0,16-1-0-0,17-1-0-0,18-1-0-0,19-1-0-0,20-1-0-0,21-1-0-0,22-1-0-0,
Keep in memory that last comma at the end of the string.
You are later doing a split on the ',' character, and iterating over them.
string[] achie = achievement.Split(',');
for (int i = 0; i< dataAchievementCache.Length; i++)
{
//Debug.Log(achie[i]);
string[] infoAchie = achie[i].Split('-');
string group = infoAchie[0];
string level = infoAchie[1];
...
}
The problem is that by doing so, your achie string array contains an empty last element. So when you are later splitting on the "-" character, your infoAchie string array only contains one element: the empty string. The first line:
string group = infoAchie[0];
Still works, but is filled with the empty string. Then:
string level = infoAchie[1];
Can't work, as you are indeed out of the bounds of the infoAchie array.
The solution would be to add the comma to your string only if it is not the last element.
Also, I strongly advise you to use a StringBuilder over a simple string for optimization purposes. Your code could then look like, for instance:
if (!PlayerPrefs.HasKey(Achievement_data_key))
{
StringBuilder achi = new StringBuilder();
for (int i = 1; i <= 22; i++)
{
achi.Append(i).Append("-1-0-0");
if(i != 22)
achi.Append(",");
}
//Debug.Log("Create new achievement " + achi);
PlayerPrefs.SetString(Achievement_data_key, achi.ToString());
}
Which generates this string:
1-1-0-0,2-1-0-0,3-1-0-0,4-1-0-0,5-1-0-0,6-1-0-0,7-1-0-0,8-1-0-0,9-1-0-0,10-1-0-0,11-1-0-0,12-1-0-0,13-1-0-0,14-1-0-0,15-1-0-0,16-1-0-0,17-1-0-0,18-1-0-0,19-1-0-0,20-1-0-0,21-1-0-0,22-1-0-0

Apply a filter on FirebaseRecyclerAdapter

I am using FirebaseRecyclerAdapter to display chat messages.
private void attachRecyclerViewAdapter() {
lastFifty = mChatRef.limitToLast(50).;
mRecyclerViewAdapter = new FirebaseRecyclerAdapter<Chat, ChatHolder>(
Chat.class, R.layout.message, ChatHolder.class, lastFifty) {
#Override
public void populateViewHolder(ChatHolder chatView, Chat chat, int position) {
chatView.setName(chat.getName());
chatView.setText(chat.getText());
chatView.setTimeLocation(chat.getTime());
FirebaseUser currentUser = mAuth.getCurrentUser();
if (currentUser != null && chat.getUid().equals(currentUser.getUid())) {
chatView.setIsSender(true);
} else {
chatView.setIsSender(false);
}
}
};
I have a list that contains list of specific users. I would like to apply filter to see only messages from those specific users. What should I do ?
You can create messages with user id pair nodes. For example messages->'uid1-uid2'->...
To prevent which is first order uids alphatecially as the following messageId generator code does:
public static String getMessageId(String id1, String id2){
String messageId;
if(id1.compareTo(id2) < 0){
messageId = id1 + "-" + id2;
}else if(id1.compareTo(id2) > 0) {
messageId = id2 + "-" + id1;
}else{
messageId = id1;
}
return messageId;
}
When you want to see the chat history between a user and urself, obtain the user's id and generate messageId = getMessageId(id1, id2); or messageId = getMessageId(id2, id1); gives the same result since the order doesn't affect the result.
Then call the messages from the node messages -> messageId
P.S. you should restructure your messages node as i describe.
EDIT
You can convert messageId to md5 equivalent to save chars.
just change
return messageId;
to
return md5(messageId);
where md5 is:
public static String md5(final String s) {
try {
// Create MD5 Hash
MessageDigest digest = java.security.MessageDigest
.getInstance("MD5");
digest.update(s.getBytes());
byte messageDigest[] = digest.digest();
// Create Hex String
StringBuffer hexString = new StringBuffer();
for (int i = 0; i < messageDigest.length; i++) {
String h = Integer.toHexString(0xFF & messageDigest[i]);
while (h.length() < 2)
h = "0" + h;
hexString.append(h);
}
return hexString.toString();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
return "";
}

Android Bluetooth input stream not reading full array

I'm creating an app to read string values over Bluetooth serial port. My data receiving but in two parts. If I send $F00,A,B,0,M# via bluetooth it only reads $ in first part and F00,A,B,0,M# in next part. I provided my code here. Please do correct me if I'm wrong.
InputStream inputStream=null;
int avilableBytes=0;
public ConnectedThread(BluetoothSocket socket){
InputStream temp=null;
try{
temp=socket.getInputStream();
}catch (IOException e){
e.printStackTrace();
}
inputStream=temp;
}
public void run() {
try{
int bytes;
while (true){
try{
avilableBytes=inputStream.available();
if (avilableBytes>0){
byte[] buffer=new byte[avilableBytes];
bytes=inputStream.read(buffer);
final String readMessage=new String(buffer,0,bytes);
bt_handler.obtainMessage(handlerState,bytes,-1,readMessage).sendToTarget();
Log.d("PRAVEEN",readMessage);
}
}catch (IOException e){
e.printStackTrace();
}
}
}catch (Exception e){
e.printStackTrace();
}
}
Data are like stream bytes and can not be processed immediately when it comes with a few bytes. Data will not come all at once as a single packet. You have to use the other byte[] buffer (MainBuffer) in which you will gradually save incoming byte and move the index in that buffer. Then, from time to time (e.g. in the timer once per second) take data from the main buffer and processed it. By default you must implement some data frame with a separator (eg. Data * data * data * - Many ways to do it good or bad). I dealt with this in .net via Xamarin, but just as an example it may be helpfull :
update example, format
In ConnectedThread :
public override void Run()
{
while (true)
{
try
{
int readBytes = 0;
lock (InternaldataReadLock)
{
readBytes = clientSocketInStream.Read(InternaldataRead, 0, InternaldataRead.Length);
Array.Copy(InternaldataRead, TempdataRead, readBytes);
}
if (readBytes > 0)
{
lock (dataReadLock)
{
dataRead = new byte[readBytes];
for (int i = 0; i < readBytes; i++)
{
dataRead[i] = TempdataRead[i];
}
}
Bundle dataBundle = new Bundle();
dataBundle.PutByteArray("Data", dataRead);
Message message = btlManager.sourceHandler.ObtainMessage();
message.What = 1;
message.Data = dataBundle;
btlManager.sourceHandler.SendMessage(message);
}
}
catch (System.Exception e)
{
btlManager.btlState = BTLService.BTLState.Nothing;
}
}
}
In BTLHandler :
public override void HandleMessage(Message msg)
{
switch (msg.What)
{
case 1:
{
byte[] data = msg.Data != null ? msg.Data.GetByteArray("Data") : new byte[0];
btlService.BTLReceiveData(data);
}
break;
}
}
public void BTLReceiveData(byte[] data)
{
lock (dataReadLock)
{
for (int i = 0; i < data.Length; i++)
{
dataRead[dataReadWriteCursor] = data[i];
dataReadWriteCursor++;
}
}
}
In Timer :
int tmpWriteCursor = dataReadWriteCursor;
int tmpReadCursor = dataReadReadCursor;
lock (dataReadLock)
{
int newBytes = dataReadWriteCursor - dataReadReadCursor;
for (int i = 0; i < newBytes; i++)
{
dataReadMain[dataReadReadCursor] = dataRead[dataReadReadCursor++];
}
}
bool odradkovani = false;
string tmpRadek = "";
int lastLineIndex = 0;
List<string> list = new List<string>();
for (int i = LastWriteLineIndex; i < tmpWriteCursor; i++)
{
if (dataReadMain[i] >= 32 && dataReadMain[i] <= 255)
{
tmpRadek += (char)dataReadMain[i];
}
else if (dataReadMain[i] == 13) odradkovani = true;
else if (dataReadMain[i] == 10)
{
if (odradkovani)
{
odradkovani = false;
list.Add(Utils.GetFormatedDateTime(DateTime.Now) + " " + tmpRadek);
tmpRadek = "";
lastLineIndex = i + 1;
}
}
else
{
tmpRadek += "?" + dataReadMain[i].ToString() + "?";
}
}
WriteDataToLog(list);
LastWriteLineIndex = lastLineIndex;

Initialize the value of a arraylist

I can't understand what is wrong in my code . I am getting error in myAddressUniqueness. don't know why.Before i have tried it with string data type but got the same error. It is saying java.null exception.
ArrayList<String> myAddressUniqueness = null;
String name = "hello";
if (indexBody < 0 || !cursor.moveToFirst())
return;
smsList.clear();
do {
// int cursorPostion = cursor.getPosition();
String address;
String msgStr = cursor.getString(indexBody);
String senderNumber = cursor.getString(indexAddr);
Log.d("Name : ", senderNumber);
// String name = cursor.getString(cursor
// .getColumnIndex(PhoneLookup.DISPLAY_NAME));
// Log.d("Name : ",name);
if (name != null) {
address = name;
} else {
address = senderNumber;
}
Log.d("Address: ", address);
flag = 1;
//Log.e("Number: ", addressUniqueness.length + "");
for (j = 0; j < myAddressUniqueness.size(); j++) {
if (myAddressUniqueness.contains(address)) {
flag = 0;
break;
}
}
if (flag == 1) {
myAddressUniqueness.add(new String(address));
i++;
String str = "Sender: " + address + "\n";
smsList.add(str);
}
// TODO Auto-generated catch block
} while (cursor.moveToNext());
Change your declaration to
ArrayList<String> myAddressUniqueness = new ArrayList<String>();
You have it initialized to null. This will instantiate it then you can add data to it.
You should instantiate myAddressUniqueness by myAddressUniqueness = new ArrayList<String>() before using it.

Why the connection to Gmail server is change my mails situation from "Unread" to "Read"?

I can receive my mails from Gmail Server and show theme on a listview on my Android Project. Yesterday, I started to change my mail's imageview for "unread" or "read" situation. But, then I realized that when my application connected to Gmail Server and receiving my mails, the RECENT mails become SEEN mails. And because of this reason I can't set my imageview's for unread mails.
I mean; I want to receive my mails from Gmail Server without changing their situations on Gmail Server. I want to receive them 3 unread and 4 read as in server.
What should I do for doing that?
My connection code sample is:
public Message[] ConnectionToServer(String email, String password)
throws Exception
{
Properties props = System.getProperties();
props.setProperty("mail.imaps.partialfetch", "false");
URLName server = new URLName("imaps://" + email + ":" + password + "#imap.gmail.com/INBOX");
Session session = Session.getDefaultInstance(props, null);
folder = session.getFolder(server);
if (folder == null)
{
System.exit(0);
}
folder.open(Folder.READ_WRITE);
messages = folder.getMessages();
for (int i = messages.length - 1; i >= 23; i--)
{
Part p = messages[i];
subject = messages[i].getSubject();
if (messages[i].isSet(Flags.Flag.RECENT)) {
isSet = true;
System.out.println("Recent");
isSetlist.add(String.valueOf(isSet));
}
if (messages[i].isSet(Flags.Flag.SEEN))
{
isSet = false;
System.out.println("Read");
isSetlist.add(String.valueOf(isSet));
}
else
{
isSet = true;
System.out.println("Recent");
isSetlist.add(String.valueOf(isSet));
}
body = getText(p);
list.add(body);
}
return (Message[]) messages;
}
I am using getContent in getText() method
public String getText(Part p) throws MessagingException, IOException {
if (p.isMimeType("text/*")) {
boolean textIsHtml = false;
String s = (String) p.getContent();
textIsHtml = p.isMimeType("text/html");
return String.valueOf(s);
}
if (p.isMimeType("multipart/alternative")) {
// prefer html text over plain text
Multipart mp = (Multipart) p.getContent();
String text = null;
for (int i = 0; i < mp.getCount(); i++) {
Part bp = mp.getBodyPart(i);
if (bp.isMimeType("text/plain")) {
if (text == null)
text = getText(bp);
continue;
} else if (bp.isMimeType("text/html")) {
String s = getText(bp);
if (s != null)
return String.valueOf(s);
} else {
return getText(bp);
}
}
return text;
} else if (p.isMimeType("multipart/*")) {
Multipart mp = (Multipart) p.getContent();
for (int i = 0; i < mp.getCount(); i++) {
String s = getText(mp.getBodyPart(i));
if (s != null)
return String.valueOf(s);
}
}
return null;
}
Access the message flags (to determine if the message is SEEN or not) before you access the content. Accessing the content normally sets the SEEN flag.
Try opening the folder in READONLY mode if you don't need to do any modifications - alternately, try preserving the Message flags across getContent calls.

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