public class AndroidsCastleActivity extends Activity {

        protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(new MyView(this));
        }

        class MyView extends View {

                public MyView(Context context) {
                        super(context);
                        
                }

                @Override
                protected void onDraw(Canvas canvas) {
                
                        Paint paint = new Paint();                      
                        paint.setColor(Color.RED);

                        canvas.drawText("ハローAndroid！！", 10, 20, paint);//テキスト描画

                        Path path = new Path();//パスを作って円を追加
                        path.addCircle(150, 150, 60, Direction.CCW);
                        
                        paint.setTextSize(30);  //テキストサイズセット

                        canvas.drawTextOnPath("Androidプログラミング", path, 10, 20, paint);//テキスト描画
                }

        }
}