Android Question Bluetooth problem

You should never use TextReader and TextWriter with network (or Bluetooth) streams. You should switch to AsyncStreams.

Thank you for your reply. I have changed textwirter&reader to asyncstreams. It fixed my problem - now it works on both tablets. But there another problem happened. When I awaiting new data - that data come separated like I waiting for "$WP+DCMSG=Test" but it comes like "$WP+DSCMSG" and then another "=Test". I need that data to be in one string. How can I do that. My goal is to received it in one notseparated string like "$WP+DCMSG=Test" - the lenght of string is dynamically changing I cannot know what I should expect - there will be variable lenght of data which I will receive. How I can fix that. Thank you. Source code in attachment.

If all messages end with an end of line character then you can use AsyncStreamsText: https://www.b4x.com/android/forum/t...n-working-with-streams-of-text.27002/#content

Thank you. It seems that it partically solved my problem. I have been looking for something like your asyncstreamstext class. Now it work correctly on both tablets when I receive small amount of data. But in Debug mod (my application debug option which will throught bluetooth setup debug on other device - other device start to send me huge amount of debugging data) on my old tablet (yarwik android 4.1.1) it works as before (when I was using textreader) but on the new tablet (huawei android 5.1.1) it laggs for a minute (maybe 30second) and then it shows that huge amount of data which arrived during lagg and then lagg again for another minute and so on. Where I should look for problem ? I cannot understand why it on first tablet works perfectly and on another one it doesn't work. Could you help me again ? Thank you very much. Source code in attachment.

1. Is the performance good in release mode?
2. Click on Ctrl + P (clean project) before you run it in debug mode. It will force the IDE to make a full deployment.

1.) No the performance in release mode is the same - first tablet OK, second tablet really hard lagging - by the word debug mode I thought mode of my aplication (not b4a ide mode), if I press "debug" button in my app it enable debug on my hardware (witch which I'm communicating throught bluetooth) that device then start me sending huge amounts of debug data - this make my second tablet lagg.
2.)I've tried doesn't help.

You need to test it on more devices. Bluetooth is not stable on all Android devices, though it did improve in the last two(?) years.