Android立体球painter

public class GameView extends View implements Runnable {

 public final static String TAG = "Example_05_03_GameView";
 //   Paint  
 private Paint mPaint = null;

 public GameView(Context context) {
  super(context);
  //     
  mPaint = new Paint();

  //     
  new Thread(this).start();
 }

 @Override
 protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);

  
  //   Paint       、Alpha 、     、    
//  
//  GradientDrawable mDrawable = new GradientDrawable(GradientDrawable.Orientation.TL_BR,
//    new int[] { 0xFFFF0000, 0xFF00FF00,
//     0xFF0000FF });
//  mDrawable.setGradientType(GradientDrawable.LINEAR_GRADIENT);
//  setCornerRadii(mDrawable, 90, 90, 100, 10);
//  mDrawable.draw(canvas);
//  mDrawable.setGradientType(GradientDrawable.RADIAL_GRADIENT);
//  setCornerRadii(mDrawable, 0, 0, 100, 100);
//  mDrawable.draw(canvas);

  //canvas.drawCircle(300, 300, 100, mPaint);
  
//  int colorFrom = Color.BLACK;
//
//     int colorTo = Color.WHITE;

     RadialGradient linearGradientShader = new RadialGradient(300, 300, 100,Color.GREEN, Color.BLACK,Shader.TileMode.CLAMP);
     mPaint.setShader(linearGradientShader);
     canvas.drawCircle(300, 300, 100, mPaint);
  
 }
 static void setCornerRadii(GradientDrawable drawable,
    float r0, float r1, float r2, float r3) {
    drawable.setCornerRadii(new float[] { r0, r0, r1, r1,
    r2, r2, r3, r3 });
 }
 
 public void paintTriangle (int x1, int y1, int x2, int y2, int x3, int y3, Paint mPaint,Canvas canvas){
  canvas.drawLine(x1, y1, x2, y2, mPaint);
  canvas.drawLine(x2, y2, x3, y3, mPaint);
  canvas.drawLine(x3, y3, x1, y1, mPaint);
 }
 
 
 //     
 
 
 public boolean onTouchEvent(MotionEvent event) {
  return true;
 }

 //       
 public boolean onKeyDown(int keyCode, KeyEvent event) {
  return true;
 }

 //       
 public boolean onKeyUp(int keyCode, KeyEvent event) {
  return true;
 }

 public boolean onKeyMultiple(int KeyCode, int repeatCount, KeyEvent event) {
  return true;
 }

 @Override
 public void run() {
  while (!Thread.currentThread().isInterrupted()) {
   try {
    Thread.sleep(100);
   } catch (Exception e) {
    Thread.currentThread().interrupt();
   }
   //     
   postInvalidate();
  }
 }
}