gps定位

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<?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"    ><TextViewandroid: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() {@Overridepublic void onStatusChanged(String provider, int status, Bundle extras) {}@Overridepublic void onProviderEnabled(String provider) {}@Overridepublic void onProviderDisabled(String provider) {}//当位置变化时触发@Overridepublic 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>
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