How To Use Timer-threads And Views

My problem is: I wrote a little android app, which uses many ImageViews. Their Images have to be changed in the code. So far it worked fine, but I wanted to add kind of algorithm s

Solution 1:

Use a handler. Timer task runs on a different thread. So you cannot update ui from it. You should update ui on the main UI Thread. You can either use a handler or runonuithread inside the timer tak run method to update ui. But i would suggest you to use a handler

Handler m_handler;
       Runnable m_handlerTask ;  
       m_handler = newHandler();
       m_handlerTask = newRunnable()
       {
         @Overridepublicvoidrun() {

                   // do something 
              m_handler.postDelayed(m_handlerTask, 1000); // instad of 1000 mention the delay in milliseconds
         }
       };
       m_handlerTask.run(); 

Or use

runOnUiThread(newRunnable(){

              @Overridepublicvoidrun(){
                //update ui here

              }
           });