android 径向菜单,点击按钮的径向菜单android？-优快云博客

博客介绍了在Android项目中创建圆形菜单的过程，包括创建新视图、绘制视图、检查用户输入和设计反馈机制。还给出了onDrawMethod代码示例，提及位图、布尔数组等参考信息，指出该菜单扩展性问题及受Catch Notes应用启发，创建时确定触摸弧线有困难。

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我最近创建了这个圆形菜单，以便在我最近的项目中添加。看起来像

你需要的是创建一个新的视图并绘制这个视图，检查用户输入(他在哪里触摸)，设计一个反馈机制，例如，在我的视图中，如果用户触摸5个弧中的任何一个，背景颜色变化到azure色。这是我的onDrawMethod代码。

protected void onDraw(Canvas canvas) { // TODO Auto-generated method stub px = getMeasuredWidth()/2; py = getMeasuredHeight(); initial = 144; finalangle = 252; centerCircleradius = 30; middleCircleRadius = 140; int init, fina; init = 160; fina = 360; finalOVal.set(px-middleCircleRadius-4, py-middleCircleRadius-4, px+middleCircleRadius+4, py+middleCircleRadius+4); middleOval.set(px-middleCircleRadius, py-middleCircleRadius, px+middleCircleRadius, py+middleCircleRadius); while(init=colors.length) { i=0; } init = init + 10; } canvas.drawArc(middleOval, 180, 180, false, pencil); midInitial = 180; i=0; //Creating the first Arc if(arcTouched[0]) { canvas.drawArc(middleOval, midInitial, 36, true, arcTouchedBack); canvas.drawArc(middleOval, midInitial, 36, true, pencil); } else { canvas.drawArc(middleOval, midInitial, 36, true, middleCircleBody); canvas.drawArc(middleOval, midInitial, 36, true, pencil); } canvas.drawBitmap(bitmap.get(0), null, (putBitmapTo(midInitial, 36, 140, px, py)), null); midInitial+=36; if(arcTouched[1]) { canvas.drawArc(middleOval, midInitial, 36, true, arcTouchedBack); canvas.drawArc(middleOval, midInitial, 36, true, pencil); } else { canvas.drawArc(middleOval, midInitial, 36, true, middleCircleBody); canvas.drawArc(middleOval, midInitial, 36, true, pencil); } canvas.drawBitmap(bitmap.get(1), null, (putBitmapTo(midInitial, 36, 140, px, py)), null); midInitial+=36; if(arcTouched[2]) { canvas.drawArc(middleOval, midInitial, 36, true, arcTouchedBack); canvas.drawArc(middleOval, midInitial, 36, true, pencil); } else { canvas.drawArc(middleOval, midInitial, 36, true, middleCircleBody); canvas.drawArc(middleOval, midInitial, 36, true, pencil); } canvas.drawBitmap(bitmap.get(2), null, (putBitmapTo(midInitial, 36, 140, px, py)), null); midInitial+=36; //Creatring the second Arc if(arcTouched[3]) { canvas.drawArc(middleOval, midInitial, 36, true, arcTouchedBack); canvas.drawArc(middleOval, midInitial, 36, true, pencil); } else { canvas.drawArc(middleOval, midInitial, 36, true, middleCircleBody); canvas.drawArc(middleOval, midInitial, 36, true, pencil); } canvas.drawBitmap(bitmap.get(3), null, (putBitmapTo(midInitial, 36, 140, px, py)), null); midInitial+=36; if(arcTouched[4]) { canvas.drawArc(middleOval, midInitial, 36, true, arcTouchedBack); canvas.drawArc(middleOval, midInitial, 36, true, pencil); } else { canvas.drawArc(middleOval, midInitial, 36, true, middleCircleBody); canvas.drawArc(middleOval, midInitial, 36, true, pencil); } canvas.drawBitmap(bitmap.get(4), null, (putBitmapTo(midInitial, 36, 140, px, py)), null); canvas.drawCircle(px, py-10, 40, pencil); canvas.drawCircle(px, py-10, 39, smallCircleCore); canvas.drawCircle(px, py-10, 35, bigArc); canvas.drawCircle(px, py-10, 20, smallCircleCore); canvas.drawCircle(px, py-10, 15, bigArc); canvas.drawLine(px-8, py-10, px+8, py-10, lineCore); canvas.save(); }

您可能需要的一些参考。

位图 – >是包含图像的arraylist

arcToched [] – >是一个定义arc背景的数组，这个布尔数组的值在onTouchEvent()方法中被修改。

lineCore，smallCircleCore …..是油漆。

我知道这不是最好的方式，也不是专业的。我根据需要创建了这个菜单。在更改角度计算之前，它无法扩展。

此视图受Catch Notes应用程序的高度启发。我在创建此视图时遇到的唯一问题是确定触摸的弧线。我在这里使用的唯一animation就像Catch Notes一样(循环菜单扩展了一点比给定大小更多然后恢复正常)。