Android 游戏开发之paint画笔

 

 paint画笔的一些方法和应用

canvas = sfh.lockCanvas();if (canvas != null) {canvas.drawColor(Color.WHITE);//-----设置画笔无锯齿Paint paint1 = new Paint();canvas.drawCircle(40, 30, 20, paint1);paint1.setAntiAlias(true);canvas.drawCircle(100, 30, 20, paint1);//-----设置画笔的透明度canvas.drawText("无透明度", 100, 70, new Paint());Paint paint2 = new Paint();paint2.setAlpha(0x77);canvas.drawText("半透明度", 20, 70, paint2);//-----设置绘制文本的锚点canvas.drawText("锚点", 20, 90, new Paint());Paint paint3 = new Paint();//设置以文本的中心点绘制paint3.setTextAlign(Paint.Align.CENTER);canvas.drawText("锚点", 20, 105, paint3);//------获取文本的长度Paint paint4 = new Paint();float len =paint4.measureText("文本宽度:");canvas.drawText("文本长度:"+len, 20, 130, new Paint());//------设置画笔样式canvas.drawRect(new Rect(20,140,40,160), new Paint());Paint paint5 = new Paint();//设置画笔不填充paint5.setStyle(Style.STROKE);canvas.drawRect(new Rect(60,140,80,160), paint5);//------设置画笔颜色Paint paint6 = new Paint();paint6.setColor(Color.GRAY);canvas.drawText("灰色", 30, 180, paint6);//------设置画笔的粗细程度canvas.drawLine(20, 200,70, 200, new Paint());Paint paint7 = new Paint();paint7.setStrokeWidth(7);canvas.drawLine(20, 220,70, 220,paint7);//------设置画笔绘制文本的字体粗细Paint paint8 = new Paint();paint8.setTextSize(20);canvas.drawText("文字尺寸", 20, 260, paint8);//------设置画笔的ARGB分量Paint paint9 = new Paint();paint9.setARGB(0x77, 0xff, 0x00, 0x00);canvas.drawText("红色半透明", 20, 290, paint9);}

注：以上参考自《Android游戏编程之从零开始》