【Android】【绘图】Canvas类，Paint类

canvas.save();//保存画布状态canvas.translate(10, 10);//画布原点移到(10,10),默认为(0,0)canvas.clipRect(0, 0, 100, 100); //设置绘图区域Bitmap bitmap=BitmapFactory.decodeResource(getResources(), R.drawable.bitmap);//从res获得bitmapcanvas.drawBitmap(bitmap, 0, 0, paint);//绘制bitmapcanvas.restore();//取出保存的画布状态

paint = new Paint();paint.setColor(Color.WHITE);paint.setStyle(Style.FILL);//填充方式：实心paint.setPathEffect(new CornerPathEffect(3));//设置路径效果：圆角Shader shader= new LinearGradient(0, 0, 100, 100,  new int[] { Color.RED, Color.GREEN, Color.BLUE, Color.YELLOW }, null, Shader.TileMode.REPEAT);  //定义阴影paint.setShader(shader);//设置阴影paint.setAntiAlias(true);//设置平滑边缘，这个操作会消耗资源