アニメ

package org.example.test;

import android.app.*;
import android.content.*;
import android.graphics.*;
import android.os.*;
import android.view.*;
import android.widget.*;

public class Anime extends Activity implements Runnable
{
    private int width;
    private int height;
    private float count = 0.0f;
    private Handler hdl;
    private SampleView sv;

    public void onCreate(Bundle savedInstanceState)
    {
      super.onCreate(savedInstanceState);

      getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
      requestWindowFeature(Window.FEATURE_NO_TITLE);

      WindowManager wm = (WindowManager)getSystemService(Context.WINDOW_SERVICE);
      Display disp = wm.getDefaultDisplay();
      width = disp.getWidth();
      height = disp.getHeight();

      LinearLayout ll = new LinearLayout(this);
      ll.setOrientation(LinearLayout.VERTICAL);
      setContentView(ll);

      hdl = new Handler();
      hdl.postDelayed(this, 10);

      sv = new SampleView(this);

      ll.addView(sv);
    }

    public void run()
    {
      count += 0.1f;

      sv.invalidate();

      hdl.postDelayed(this, 10);
    }

    public void onDestroy()
    {
      super.onDestroy();
      hdl.removeCallbacks(this);
    }

    class SampleView extends View
    {
      private float x, y;

      public SampleView(Context cn)
      {
        super(cn);

        x = width / 2;
        y = height / 2;
      }

      protected void onDraw(Canvas cv)
      {
        super.onDraw(cv);

        Paint p = new Paint();
        p.setColor(Color.argb(255,0,255,0));
        cv.drawCircle(x + (int)(Math.sin(count) * (width / 3)), y, 10, p);
      }
    }
}