1、北京信息職業(yè)技術(shù)學(xué)院 | 范美英Android中Shape類的子類2Shape的繼承關(guān)系A(chǔ)ndroid中Shape類的子類| 概況3RectShape（矩形形狀）Android中Shape類的子類| 各子類的介紹 /創(chuàng)建該形狀的對(duì)象 RectShape rectShape = new RectShape(); /使用這種形狀構(gòu)造 ShapeDrawable drawable = new ShapeDrawable(rectShape); drawable.getPaint().setColor(Color.RED); drawable.getPaint().setStyle(Paint.Sty

2、le.FILL); view.setBackgroundDrawable(drawable); 4RoundRectShape（圓角矩形形狀）Android中Shape類的子類| 各子類的介紹 float outerRadii = 20, 20, 40, 40, 60, 60, 80, 80;/外矩形 左上、右上、右下、左下 圓角半徑 RectF inset = new RectF(100, 100, 200, 200);/內(nèi)矩形距外矩形，左上角x,y距離， 右下角x,y距離 float innerRadii = 20, 20, 20, 20, 20, 20, 20, 20;/內(nèi)矩形 圓角半徑

3、 /RoundRectShape roundRectShape = new RoundRectShape(outerRadii, inset, innerRadii); RoundRectShape roundRectShape = new RoundRectShape(outerRadii, null, innerRadii); /無(wú)內(nèi)矩形 ShapeDrawable drawable = new ShapeDrawable(roundRectShape); drawable.getPaint().setColor(Color.MAGENTA); drawable.getPaint().se

4、tAntiAlias(true); drawable.getPaint().setStyle(Paint.Style.STROKE);/描邊 view.setBackground(drawable); 5OvalShape（橢圓形形狀）Android中Shape類的子類| 各子類的介紹 OvalShape ovalShape = new OvalShape(); ShapeDrawable drawable = new ShapeDrawable(ovalShape); drawable.getPaint().setColor(Color.RED); drawable.getPaint().s

5、etStyle(Paint.Style.FILL_AND_STROKE); view.setBackgroundDrawable(drawable); 6ArcShape（扇形形狀）Android中Shape類的子類| 各子類的介紹 ArcShape arcShape = new ArcShape(45, 270); /順時(shí)針 開始角度45， 掃描的角度270 扇形 ShapeDrawable drawable = new ShapeDrawable(arcShape); drawable.getPaint().setColor(Color.RED); drawable.getPaint().

6、setStyle(Paint.Style.FILL); view.setBackgroundDrawable(drawable); 7ArcShapeAndroid中Shape類的子類| 各子類的介紹 ArcShape arcShape = new ArcShape(45, 270); /順時(shí)針 開始角度45， 掃描的角度270 扇形 ShapeDrawable drawable = new ShapeDrawable(arcShape); Bitmap bitmap = (BitmapDrawable)getResources().getDrawable(R.drawable.aa).get

7、Bitmap(); BitmapShader bitmapShader = new BitmapShader(bitmap, Shader.TileMode.MIRROR, Shader.TileMode.REPEAT); Matrix matrix = new Matrix(); matrix.preScale(600.00f / bitmap.getWidth(), 600.00f /bitmap.getHeight(); bitmapShader.setLocalMatrix(matrix); drawable.getPaint().setShader(bitmapShader); vi

8、ew.setBackgroundDrawable(drawable); 8PathShape（自定義路徑的形狀）Android中Shape類的子類| 各子類的介紹 Path path = new Path(); path.moveTo(50, 0); path.lineTo(0, 50); path.lineTo(50, 100); path.lineTo(100, 50); path.lineTo(50, 0); PathShape pathShape = new PathShape(path, 200, 100); ShapeDrawable drawable = new ShapeDrawable(pathShape); drawable.getPaint().setColor(Color.RED); drawable.getPai