Can anyone help?

Question

I wanted to create an app that at start displays a green circle in which hello is written then for every 0.1 seconds draws a circle of random size and position. things go well till the green circle with hello but it doesn't draws any circles. Please see my code and tell what to do?
I am newbie to android, who has started just two days ago.

Answer 1

package com.mycompany.myappcanvas;

import android.app.*;
import android.os.*;
import android.view.*;
import android.content.*;
import android.graphics.*;
import android.widget.*;
import java.util.*;
public class MainActivity extends Activity
{
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
DemoView d=new DemoView(this);
setContentView(d);
}
private class DemoView extends View{
public DemoView(Context c){
super(c);
}
@Override
protected void onDraw(Canvas ca){
super.onDraw(ca);
Paint p= new Paint();
p.setStyle(Paint.Style.FILL);
p.setColor(Color.BLACK);
ca.drawPaint(p);
p.setAntiAlias(true);
p.setColor(Color.GREEN);
ca.drawCircle(200,200,105,p);
p.setColor(Color.WHITE);
ca.drawText("Hello",200,200,p);
Timer t=new Timer();
Xfdr x=new Xfdr(ca,p);
long n=100;
t.schedule(x,n);
}
private class Xfdr extends TimerTask
{
Canvas cnx;
Paint px;
public Xfdr(Canvas cn,Paint p1){
this.cnx=cn;
this.px=p1;
}
public void run(){
cnx.drawCircle(((float)Math.round(Math.random()*450)),((float)Math.round(Math.random()*450)),((float)Math.round(Math.random()*450)),px);
}
}
}

}

Answer 2

@Conrad
java
Please try only modifying my code below

Answer 3

du u want to use java on the circle or xml