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The returned error is: android.os.NetworkOnMainThreadException That means you try to access a network in the main thread, which is not recommended under Android (and other OS as well) because that can freeze the UI and raise an ApplicationNotResponding error after a few seconds. Use only asynchrono
link: Close End Sub Sub ServerEvents_NewConnection (Successful As Boolean, NewSocket As Socket) If Successful Then Istream=NewSocket.InputStream '

Hello experts! Can anyone tell me why when my application is released it can't connect to the database? I'm using the JdbcSql library and the connection happens under my private network. However, with debugging it manages to connect. The problem is as follows: (NetworkOnMainThreadException) android
link: Thanks Erel. I am not using the asynchronous methods for the moment because I am testing the app. Then when the code is ready I proceed with adding th
link: 1. Use the search feature: https://www.b4x.com/search?query=NetworkOnMainThreadException 2. Include the relevant information in your post. I assume t

network i/o involves, among others, the possibility of delay in transmission. in other words, a situation over which you have no control. such delays are anathema to android and may cause the so-called ANR failure because the main thread (your app) is frozen waiting for the operation to finish.
link: what is the value here? Mean: what is the url you are calling? I can´t see how a NetworkOnMainthread exception can happen here. You code is INCOMPLET
link: I am trying, since a few weeks, to develop a B4A application to consult the real time price of stocks. The best results have been obtained using the
link: ChatGPT sums up what the other users in this thread are saying: For the issues you're experiencing with your B4A (Basic4Android) application, let's t

I am using the Network Library, sending something to the (Arduino) Server and wait for the respose in the same sub. In Debug mode it is working, in Release mode I get the NetworkOnMainThreadException error on this line: tr_Server.ReadLine ' tr_Server is a TextReader .Initialize(Socket1.InputStream)
link: You should never use TextReader / TextWriter with network streams. Always use AsyncStreams. Because it is intended to be use with AsyncStreams. htt
link: Thank you for the fast reply. I tried the AsyncStreams, but AStream_NewData is never fired. This I am doing: - CallSub2(Starter, "Connect", sRequest)

Looks like a bug in the underlying library. I will send you a PM with an updated library. Please try it.
link: Is there another solution for this problem?

USE the forumsearch! ;-) https://www.b4x./?query=%%29+android.os.NetworkOnMainThreadException and https://www.b4x.-the-networkonmainthread-exception.44760/#content
link: I've tried the old socket example. All goes correctly with debug, but when i go to the release mode, the app break and give me this exception. (Netw

Sorry, I don't do Android, I just googled android.os.NetworkOnMainThreadException and there were several suggestions to prevent this error, but not sure how you would implement in B4A.
link: Caused by: android.os.NetworkOnMainThreadException Are you running any network task on the main thread instead of in a background task?
link: run(View.java:29146) at android.os.Handler.handleCallback(Handler.java:938) at android.os.Handler.dispatchMessage(Handler.java:99) at andr

No ... (NetworkOnMainThreadException) android.os.NetworkOnMainThreadException
link: Do you get the NetworkOnMainThread error? If yes then you can workaround it: https://www.b4x./#content Though the correct solution is to avoid using
link: This error means that you should avoid using this library if you want to implement a good and reliable solution. Workaround: Workaround the NetworkOn

I'm using HttpRequest to communicate with my mysql but with a device SDK 2.2 everything works perfectly! device with a 4.0 sdk I go to NetworkOnMainThreadException. How do I get out? 22280

https://www.b4x./?query=NetworkOnMainThreadException
link: I have tested your program. It works smoothly in "Debug mode" while in "Release mode" an error occurred. "An error has occurred in sub:main:button1:cl

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