<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <TextView android:id="@+id/myLoctionText" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textSize="22dip" android:text="@string/hello" /> </LinearLayout>
package com.zhou.activity; import android.app.Activity; import android.content.Context; import android.location.Criteria; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; import android.widget.TextView; public class WhereAmIActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); //声明LocationManager对象 LocationManager loctionManager; String contextService=Context.LOCATION_SERVICE; //通过系统服务,取得LocationManager对象 loctionManager=(LocationManager) getSystemService(contextService); //通过GPS位置提供器获得位置 // String provider=LocationManager.GPS_PROVIDER; // Location location = loctionManager.getLastKnownLocation(provider); //使用标准集合,让系统自动选择可用的最佳位置提供器,提供位置 Criteria criteria = new Criteria(); criteria.setAccuracy(Criteria.ACCURACY_FINE);//高精度 criteria.setAltitudeRequired(false);//不要求海拔 criteria.setBearingRequired(false);//不要求方位 criteria.setCostAllowed(true);//允许有花费 criteria.setPowerRequirement(Criteria.POWER_LOW);//低功耗 //从可用的位置提供器中,匹配以上标准的最佳提供器 String provider = loctionManager.getBestProvider(criteria, true); //获得最后一次变化的位置 Location location = loctionManager.getLastKnownLocation(provider); //显示在TextView中 updateWithNewLocation(location); //监听位置变化,2秒一次,距离10米以上 loctionManager.requestLocationUpdates(provider, 2000, 10, locationListener); } //位置监听器 private final LocationListener locationListener = new LocationListener() { @Override public void onStatusChanged(String provider, int status, Bundle extras) { } @Override public void onProviderEnabled(String provider) { } @Override public void onProviderDisabled(String provider) { } //当位置变化时触发 @Override public void onLocationChanged(Location location) { //使用新的location更新TextView显示 updateWithNewLocation(location); } }; //将位置信息显示在TextView中 private void updateWithNewLocation(Location location) { String latLongString; TextView myLoctionText; myLoctionText=(TextView) findViewById(R.id.myLoctionText); if(location!=null){ double lat=location.getLatitude(); double lng=location.getLongitude(); latLongString = "Lat(纬度): "+lat+"\nLong(经度): "+lng; }else{ latLongString="没找到位置"; } myLoctionText.setText("您当前的位置是:\n"+latLongString); } }
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
第二种:
<pre name="code" class="java">package com.example.aaaa; import java.util.Calendar; import java.util.Iterator; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.location.Criteria; import android.location.GpsSatellite; import android.location.GpsStatus; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.location.LocationProvider; import android.os.Bundle; import android.util.Log; import android.widget.EditText; import android.widget.TextView; import android.provider.Settings; import android.widget.Toast; public class MainActivity extends Activity { private EditText editText; private TextView logText; private LocationManager lm; private static final String TAG="GpsActivity"; @Override protected void onDestroy() { // TODO Auto-generated method stub super.onDestroy(); lm.removeUpdates(locationListener); } private void setLog(String txt){ printTime(); setLogInfo(txt); } private void setLogInfo(String txt){ logText.setText(txt+"\n"+"--------------------\n"+logText.getText()); } private void printTime(){ Calendar ca = Calendar.getInstance(); int year = ca.get(Calendar.YEAR);//获取年份 int month=ca.get(Calendar.MONTH);//获取月份 int day=ca.get(Calendar.DATE);//获取日 int minute=ca.get(Calendar.MINUTE);//分 int hour=ca.get(Calendar.HOUR);//小时 int second=ca.get(Calendar.SECOND);//秒 int WeekOfYear = ca.get(Calendar.DAY_OF_WEEK); setLogInfo("当前日期:" + year +"年"+ month +"月"+ day + "日"); setLogInfo(">>>" + hour +"时"+ minute +"分"+ second +"秒"); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); editText=(EditText)findViewById(R.id.editText); logText=(TextView) this.findViewById(R.id.logText); lm=(LocationManager)getSystemService(Context.LOCATION_SERVICE); //判断GPS是否正常启动 if(!lm.isProviderEnabled(LocationManager.GPS_PROVIDER)){ Toast.makeText(this, "请开启GPS导航...", Toast.LENGTH_SHORT).show(); setLog("请开启GPS导航..."); //返回开启GPS导航设置界面 Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); startActivityForResult(intent,0); return; } //为获取地理位置信息时设置查询条件 String bestProvider = lm.getBestProvider(getCriteria(), true); //获取位置信息 //如果不设置查询要求,getLastKnownLocation方法传人的参数为LocationManager.GPS_PROVIDER Location location= lm.getLastKnownLocation(bestProvider); updateView(location); //监听状态 lm.addGpsStatusListener(listener); //绑定监听,有4个参数 //参数1,设备:有GPS_PROVIDER和NETWORK_PROVIDER两种 //参数2,位置信息更新周期,单位毫秒 //参数3,位置变化最小距离:当位置距离变化超过此值时,将更新位置信息 //参数4,监听 //备注:参数2和3,如果参数3不为0,则以参数3为准;参数3为0,则通过时间来定时更新;两者为0,则随时刷新 // 1秒更新一次,或最小位移变化超过1米更新一次; //注意:此处更新准确度非常低,推荐在service里面启动一个Thread,在run中sleep(10000);然后执行handler.sendMessage(),更新位置 lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 1, locationListener); } //位置监听 private LocationListener locationListener=new LocationListener() { /** * 位置信息变化时触发 */ public void onLocationChanged(Location location) { updateView(location); Log.i(TAG, "时间:"+location.getTime()); Log.i(TAG, "经度:"+location.getLongitude()); Log.i(TAG, "纬度:"+location.getLatitude()); Log.i(TAG, "海拔:"+location.getAltitude()); setLog( "时间:"+location.getTime()); setLog( "经度:"+location.getLongitude()); setLog( "纬度:"+location.getLatitude()); setLog( "海拔:"+location.getAltitude()); } /** * GPS状态变化时触发 */ public void onStatusChanged(String provider, int status, Bundle extras) { switch (status) { //GPS状态为可见时 case LocationProvider.AVAILABLE: Log.i(TAG, "当前GPS状态为可见状态"); setLog("当前GPS状态为可见状态"); break; //GPS状态为服务区外时 case LocationProvider.OUT_OF_SERVICE: Log.i(TAG, "当前GPS状态为服务区外状态"); setLog("当前GPS状态为服务区外状态"); break; //GPS状态为暂停服务时 case LocationProvider.TEMPORARILY_UNAVAILABLE: Log.i(TAG, "当前GPS状态为暂停服务状态"); setLog("当前GPS状态为暂停服务状态"); break; } } /** * GPS开启时触发 */ public void onProviderEnabled(String provider) { Location location=lm.getLastKnownLocation(provider); updateView(location); } /** * GPS禁用时触发 */ public void onProviderDisabled(String provider) { updateView(null); } }; //状态监听 GpsStatus.Listener listener = new GpsStatus.Listener() { public void onGpsStatusChanged(int event) { switch (event) { //第一次定位 case GpsStatus.GPS_EVENT_FIRST_FIX: Log.i(TAG, "第一次定位"); setLog("第一次定位"); break; //卫星状态改变 case GpsStatus.GPS_EVENT_SATELLITE_STATUS: Log.i(TAG, "卫星状态改变"); setLog("卫星状态改变"); //获取当前状态 GpsStatus gpsStatus=lm.getGpsStatus(null); //获取卫星颗数的默认最大值 int maxSatellites = gpsStatus.getMaxSatellites(); //创建一个迭代器保存所有卫星 Iterator<GpsSatellite> iters = gpsStatus.getSatellites().iterator(); int count = 0; while (iters.hasNext() && count <= maxSatellites) { GpsSatellite s = iters.next(); count++; } System.out.println("搜索到:"+count+"颗卫星"); lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 1, locationListener); setLog("搜索到:"+count+"颗卫星"); break; //定位启动 case GpsStatus.GPS_EVENT_STARTED: Log.i(TAG, "定位启动"); setLog("定位启动"); break; //定位结束 case GpsStatus.GPS_EVENT_STOPPED: Log.i(TAG, "定位结束"); setLog("定位结束"); break; } }; }; /** * 实时更新文本内容 * * @param location */ private void updateView(Location location){ if(location!=null){ editText.setText("设备位置信息\n\n经度:"); editText.append(String.valueOf(location.getLongitude())); editText.append("\n纬度:"); editText.append(String.valueOf(location.getLatitude())); }else{ //清空EditText对象 editText.getEditableText().clear(); } } /** * 返回查询条件 * @return */ private Criteria getCriteria(){ Criteria criteria=new Criteria(); //设置定位精确度 Criteria.ACCURACY_COARSE比较粗略,Criteria.ACCURACY_FINE则比较精细 criteria.setAccuracy(Criteria.ACCURACY_FINE); //设置是否要求速度 criteria.setSpeedRequired(false); // 设置是否允许运营商收费 criteria.setCostAllowed(false); //设置是否需要方位信息 criteria.setBearingRequired(false); //设置是否需要海拔信息 criteria.setAltitudeRequired(false); // 设置对电源的需求 criteria.setPowerRequirement(Criteria.POWER_LOW); return criteria; } }
<?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" > <LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <EditText android:id="@+id/editText" android:layout_width="fill_parent" android:layout_height="wrap_content" android:cursorVisible="false" android:editable="false" /> <TextView android:id="@+id/logText" android:layout_width="fill_parent" android:layout_height="wrap_content" android:minHeight="300dp" /> </LinearLayout> </ScrollView>权限同上