StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POPosting a Message to a running Thread using Handlers
primarykey
Id
15616971
data
AcceptedAnswerId
15617320
AnswerCount
2
ClosedDate
CommentCount
6
CommunityOwnedDate
CreationDate
2013-03-25T14:06:28.877
FavoriteCount
0
LastActivityDate
2013-03-25T14:22:50.297
LastEditDate
2013-03-25T14:17:36.443
LastEditorUserId
439242
OwnerUserId
439242
ParentId
0
PostTypeId
1
Score
0
ViewCount
141
LastEditorDisplayName
text
Body
I have code which calls a new Thread that connects to an IRC server. The thread has loop to listen for response from the IRC server and calls a method 'ProcessData' to action the response. On my UI I want to be able to 'QUIT' the IRC server in onStop and onPause. The trouble I have is that when I use a Handler to post a message to my IRC thread which sends a QUIT command to the IRC server it tells me that I am performing network operations on the UI thread. The handler is setup in my IRCManager class (this class extends Thread and is the class I run on a separate thread. <pre><code>public Handler networkHandler = new Handler() { @Override public void handleMessage(Message msg) { try { processData((String) msg.obj); } catch (IOException e) { Log.e(TAG, "network handler given an object NOT of type String"); } super.handleMessage(msg); } }; </code></pre> I use the handler from the main activity and instantiate it just after starting the network thread <pre><code>irc.start(); networkHandler = irc.networkHandler; </code></pre> In the onPause event I send a message to the handler <pre><code>Message msg = new Message(); msg.obj = IRCManager.QUIT; networkHandler.sendMessage(msg); </code></pre> EDIT: Here is the processData method <pre><code>void processData(String data) throws IOException { if (data.contains("PING")) { String pingId = data.substring(6, data.length()); sendMessage(pong + pingId + "\n"); isConnected = true; Message msg = new Message(); msg.what = 1; msg.obj = "test"; handler.sendMessage(msg); } else if (data.contains("Welcome")) { sendMessage("PRIVMSG " + BOT_NAME + " JOIN " + siteId + "\n"); } else if (data.contains(IRCManager.QUIT)) { disconnect(); } else if (isClientConnected()) { Message msg = new Message(); msg.what = 2; msg.obj = "test"; handler.sendMessage(msg); } } </code></pre> It seems that the handler isn't linking properly to the thread. Can anyone shed any light on how I can do this? My thread actually spends 99% of it's time in a while loop checking the inputstream from the IRC server. This may also have something to do with it.
Tags
<android><multithreading><sockets>
Title
Posting a Message to a running Thread using Handlers
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USStephen
UserOwnerUserId
1. USStephen
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
2. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 POPosting a Message to a running Thread using Handlers
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTDownMod
2. VO
 singulars
 PostPostId
 POPosting a Message to a running Thread using Handlers
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
CommentsPostId

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.