通过gps取得的是一个location类型的经纬度， 可以转换为两个double 纬度和经度.
纬度: 23.223871812820435
纬度: 113.58986039161628
首先创建一个textview和两个button
<textview android:id="@+id/text" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <button android:id="@+id/btnstart" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="定位" /> <button android:id="@+id/btnstop" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="停止" />
然后添加主activity的代码
location 是存放经纬度的一个类型
locationmanager是位置管理服务类型
private button btnstart; private button btnstop; private textview textview; private location mlocation; private locationmanager mlocationmanager; /** called when the activity is first created. */ @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.main); btnstart = (button)findviewbyid(r.id.btnstart); btnstop = (button)findviewbyid(r.id.btnstop); textview = (textview)findviewbyid(r.id.text); btnstart.setonclicklistener(btnclicklistener); //开始定位 btnstop.setonclicklistener(btnclicklistener); //结束定位按钮 } gpsisopen是自己写的查看当前gps是否开启 getlocation 是自己写的一个获取定位信息的方法 mlocationmanager.removeupdates()是停止当前的gps位置监听 public button.onclicklistener btnclicklistener = new button.onclicklistener() { public void onclick(view v) { button btn = (button)v; if(btn.getid() == r.id.btnstart) { if(!gpsisopen()) return; mlocation = getlocation(); if(mlocation != null) textview.settext("维度:" + mlocation.getlatitude() + "\n经度:" + mlocation.getlongitude()); else textview.settext("获取不到数据"); } else if(btn.getid() == r.id.btnstop) { mlocationmanager.removeupdates(locationlistener); } } }; private boolean gpsisopen() { boolean bret = true; locationmanager alm = (locationmanager)this.getsystemservice(context.location_service); if(!alm.isproviderenabled(locationmanager.gps_provider)) { toast.maketext(this, "未开启gps", toast.length_short).show(); bret = false; } else { toast.maketext(this, "gps已开启", toast.length_short).show(); } return bret; } 判断当前是否开启gps private boolean gpsisopen() { boolean bret = true; locationmanager alm = (locationmanager)this.getsystemservice(context.location_service); if(!alm.isproviderenabled(locationmanager.gps_provider)) { toast.maketext(this, "未开启gps", toast.length_short).show(); bret = false; } else { toast.maketext(this, "gps已开启", toast.length_short).show(); } return bret; } 该方法获取当前的经纬度， 第一次获取总是null 后面从locationlistener获取已改变的位置 mlocationmanager.requestlocationupdates()是开启一个locationlistener等待位置变化 private location getlocation() { //获取位置管理服务 mlocationmanager = (locationmanager)this.getsystemservice(context.location_service); //查找服务信息 criteria criteria = new criteria(); criteria.setaccuracy(criteria.accuracy_fine); //定位精度: 最高 criteria.setaltituderequired(false); //海拔信息：不需要 criteria.setbearingrequired(false); //方位信息: 不需要 criteria.setcostallowed(true); //是否允许付费 criteria.setpowerrequirement(criteria.power_low); //耗电量: 低功耗 string provider = mlocationmanager.getbestprovider(criteria, true); //获取gps信息 location location = mlocationmanager.getlastknownlocation(provider); mlocationmanager.requestlocationupdates(provider, 2000, 5, locationlistener); return location; } 改方法是等待gps位置改变后得到新的经纬度 private final locationlistener locationlistener = new locationlistener() { public void onlocationchanged(location location) { // todo auto-generated method stub if(location != null) textview.settext("维度:" + location.getlatitude() + "\n经度:" + location.getlongitude()); else textview.settext("获取不到数据" + integer.tostring(ncount)); } public void onproviderdisabled(string provider) { // todo auto-generated method stub } public void onproviderenabled(string provider) { // todo auto-generated method stub } public void onstatuschanged(string provider, int status, bundle extras) { // todo auto-generated method stub } };
更多android实现gps定位代码实例。