android cavas阴影的绘制

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1、Androidcavas阴影的绘制在AndroidView中,要绘制阴影可以利用Paint物件的setShadowLayer函数.Java代码:publicclasshelloWorldextendsActivity{@OverridepublicvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(newdrawCanvas(this));}classdrawCanvasextendsView{publicdrawCanvas(Contextc

2、ontext){super(context);}@OverrideprotectedvoidonDraw(Canvascanvas){super.onDraw(canvas);//建立Paint物件PaintvPaint=newPaint();PaintvPaint2=newPaint();//--------------------------------------------//设定颜色vPaint.setColor(0xFFFFFF00);//实心矩形canvas.drawRect(30,50,130,150,vPaint);//设定阴影(柔边,X轴位移,Y轴

3、位移,阴影颜色)vPaint.setShadowLayer(5,3,3,0xFFFF00FF);//实心矩形&其阴影canvas.drawRect(30,200,130,300,vPaint);//--------------------------------------------//设定颜色vPaint2.setColor(0xFFFFFF00);//空心vPaint2.setStyle(Style.STROKE);//空心矩形canvas.drawRect(200,50,300,150,vPaint2);//设定阴影(柔边,X轴位移,Y轴位移,阴影颜色) vP

4、aint2.setShadowLayer(5,3,3,0xFFFF00FF);//空心矩形&其阴影canvas.drawRect(200,200,300,300,vPaint2);}}}