使用GPS实时记录运动路线

最新推荐文章于 2024-08-08 09:03:02 发布

转载最新推荐文章于 2024-08-08 09:03:02 发布 · 311 阅读

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原文链接：http://www.cnblogs.com/sfshine/archive/2012/04/19/2524487.html

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使用GPS实时记录运动路线,没有经过真机测试但是理论上应该没问题等有流量后进行一下性能测试

主要思路就是使用list实时记录运动坐标 , 继承 Overlay，并重写draw方法，在draw方法中通过list的数值画出path。

首先声明list

private List<GeoPoint> gPointList = new ArrayList<GeoPoint>();继承Overlay

class MyOverlay extends Overlay { @Override public void draw(Canvas canvas, MapView mapView, boolean shadow) { // TODO Auto-generated method stub super.draw(canvas, mapView, shadow); //Log.i(TAG, "draw");地图变化时候不断重绘 // 画笔 Paint paint = new Paint(); paint.setColor(Color.RED); paint.setDither(true); paint.setStyle(Paint.Style.STROKE); paint.setStrokeJoin(Paint.Join.ROUND); paint.setStrokeCap(Paint.Cap.ROUND); paint.setStrokeWidth(2); Projection projection = mapView.getProjection(); Path path = new Path(); if (gPointList.size()>1) {//2 Point p1 = new Point(); projection.toPixels(gPointList.get(0), p1); path.moveTo(p1.x, p1.y); for (int i = 0; i < gPointList.size()-1; i++) { Point p2 = new Point(); projection.toPixels(gPointList.get(i+1), p2); path.lineTo(p2.x, p2.y); Log.i(TAG, ""+p2.x+""+p2.y); } canvas.drawPath(path, paint);// 画出路径 } } }

显示在map上

//绘制路径

gpoint1 = new GeoPoint((int) (lat * 1000000), (int) (lng * 1000000)); gPointList.add(gpoint1); myOverlay = new MyOverlay(); overlays.add(myOverlay);

4月20日发现如果放到线程里貌似更好可以设置多少时间取样

class ThreadGetRoute implements Runnable { public void run() { try { gpoint1 = new GeoPoint((int) (lat * 1000000), (int) (lng * 1000000)); gPointList.add(gpoint1); myOverlay = new MyOverlay(); overlays.add(myOverlay); Thread.sleep(10000); } catch (Exception e) { e.printStackTrace(); } } }