I think you are not using the handler for the updating of the GUI which is causing problem.
Take a look at this tutorial that explains the basics of GUI/View updates. http://www.anddev.org/the_pizza_timer_-_threading-drawing_on_canvas-t126.html Hope it helps... On Jul 28, 5:23 am, Manjul <[email protected]> wrote: > Hi, all i am making a arc whose size keep on changing as value is > changed in thread, but problem is, i am not able to run thread, no > error nothing. > here is my code > > package com.Arcs; > > import android.app.Activity; > import android.content.Context; > import android.graphics.Canvas; > import android.graphics.Color; > import android.graphics.Paint; > import android.graphics.RectF; > import android.os.Bundle; > import android.view.KeyEvent; > import android.view.View; > > public class ArcTest extends Activity > { > SampleView sv; > > public void onCreate(Bundle savedInstanceState) > { > super.onCreate(savedInstanceState); > sv=new SampleView(this); > setContentView(sv); > } > > class SampleView extends View implements Runnable > { > Paint paint; > RectF oval; > float f,j=360; > boolean running=true; > > SampleView(Context arc) > { > super(arc); > paint=new Paint(); > paint.setColor(0x88FF0000); > Thread t=new Thread(this); > t.start(); > t.setPriority(10); > } > > protected void onDraw(Canvas canvas) > { > System.out.println("in ondraw"); > canvas.drawColor(Color.WHITE); > oval=new RectF(10,10,280,250); > canvas.drawArc(oval, f, j, true, paint); > canvas.drawText(""+j, 30, 300, paint); > // f++; > // if(f>360) > // f=0; > // j--; > // if(j<0) > // j=360; > // invalidate(); > > } > > public void run() > { > try{ > while(running) > { > j--; > if(j<0) > j=360; > invalidate(); > Thread.sleep(150); > System.out.println("in thread"); > } > }catch(Exception e){e.printStackTrace();} > } > > } > > > > } --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Beginners" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -~----------~----~----~----~------~----~------~--~---
