dx：X軸方向的偏移量

dy：Y軸方向的偏移量

color：陰影顏色

package xiaosi.textShadow;import android.app.Activity;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import
 
 android.os.Bundle;import android.view.View;public class TextShadowActivity extends Activity{ @Override public void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(new drawCanvas(this)); } class drawCanvas extends View {  private Bitmap  bitmap = null;  public
 
 drawCanvas(Context context)  {   super(context);   bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.i_skinprocess);  }  @Override  protected void onDraw(Canvas canvas)  {   super.onDraw(canvas);   // 建立Paint 物件   Paint paint1 = new Paint();   // 設定顏色   paint1.setColor(0xFFFFFF00);   // 設定陰影(柔邊, X 軸位移, Y 軸位移, 陰影顏色)
 
   paint1.setShadowLayer(5, 3, 3, 0xFFFF00FF);   // 實心矩形& 其陰影   canvas.drawText("我很愛你", 20,40,paint1);   Paint paint2 = new Paint();   paint2.setColor(Color.GREEN);   paint2.setShadowLayer(10, 5, 2, Color.YELLOW);   canvas.drawText("你真傻", 20,60,paint2);      Paint paint3 = new Paint();   paint3.setColor(Color.RED);   paint3.setShadowLayer(30, 5, 2, Color.GREEN);   canvas.drawCircle(50, 130,30, paint3);      Paint paint4 = new Paint();   paint4.setShadowLayer(5, 8, 7, Color.DKGRAY);   canvas.drawBitmap(bitmap, 50, 200, paint4);  } }}