Question

I initialize new Thread in service but when i start service the new one is made and it make my app crash beacause I use camera in it.
How to make that it will be ony one instance of that Thread?

When Thread is closing? If I close service where I made it, it will be also closed?

Answer 1

you could use a lock or a static variable:

private static boolean isThreadRunning;

and then in your service:

if(isThreadRunning)
   return;

Thread t=new Thread(new Runnable(){

protected void run(){
   isThreadRunning=true;
   while(yourcondition){
     //your thread code...
   }
   isThreadRunning=false;
   //if you want to start another thread after this one is ended, you should post a message to a handler here and it should start another thread like this
}

});