Android 繪圖

package Com.DrawTest;

import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.Paint.Style;
import android.os.Bundle;
import android.view.View;

public class DrawTest extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
MyView myview = new MyView(this);
setContentView(myview);
}

private class MyView extends View
{
public MyView(Context context)
{
super(context);
}
@Override
protected void onDraw(Canvas canvas)
{
super.onDraw(canvas);
canvas.drawColor(Color.WHITE);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setColor(Color.RED);
paint.setStyle(Style.FILL);
canvas.drawCircle(120, 40, 30, paint);
canvas.drawRect(90,170,150,200, paint);
//canvas.drawBitmap(bitmap, matrix, paint)
}
}
}