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.util.Log;  import android.widget.TextView;  import android.widget.Toast;    public class GPSActivity extends Activity {      //声明位置管理对象       private LocationManager locationManager;       //声明位置监听对象       private LocationListener locationListener;       //声明字符串变量       String locationprovider;       //声明显示文本视图组建       private TextView textview;      /** Called when the activity is first created. */      @Override      public void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.main);          //获得文本视图          textview = (TextView)this.findViewById(R.id.textView1);          try{              //新建Criteria类              Criteria locationcriteria = new Criteria();              //设置精确精度              locationcriteria.setAccuracy(Criteria.ACCURACY_FINE);              //不提供海拔高度信息              locationcriteria.setAltitudeRequired(false);              //不提供方向信息              locationcriteria.setBearingRequired(false);              //允许运营商计费              locationcriteria.setCostAllowed(true);              //设置电池消耗为低耗费              locationcriteria.setPowerRequirement(Criteria.POWER_LOW);              //使用getSystemService()方法获得位置管理器对象              locationManager              =(LocationManager)getSystemService(Context.LOCATION_SERVICE);              //locationManager.setTestProviderEnabled("gps", true);              Toast.makeText(GPSActivity.this, "getSystemService", Toast.LENGTH_SHORT).show();              //检查gps功能开启              if(checkgps()){                  locationprovider                   =locationManager.getBestProvider(locationcriteria, true);                  Log.d("provider", locationprovider);                  //注册位置监听器                  locationListener = new MyLocationListener();                  locationManager.requestLocationUpdates(locationprovider, 1000, 0,locationListener);              }          }catch(Exception e){              Toast.makeText(GPSActivity.this, "异常错误"+e.toString(),Toast.LENGTH_LONG).show();          }        }      private class MyLocationListener implements LocationListener{           /**            * 若位置发生变化，onLocationChanged方法被调用            */          @Override          public void onLocationChanged(Location location) {              // TODO Auto-generated method stub              Log.i("位置发生变化", "Invoke");              if(location != null){                  //获得经度                  String latitude = Double.toString(location.getLatitude());//经度                    //获得纬度                   String longitude = Double.toString(location.getLongitude());//纬度                  //在文本框中显示                 textview = (TextView)GPSActivity.this.findViewById(R.id.textView1);                  textview.setText("经度："+longitude+"纬度"+latitude);              }              //locationManager.removeUpdates(this);              //locationManager.setTestProviderEnabled("gps", true);          }           //若屏蔽提供商，该方法被调用            @Override          public void onProviderDisabled(String provider) {              // TODO Auto-generated method stub              Log.i("屏蔽提供商", "Invode");          }          //若激活提供商，该方法被调用          @Override          public void onProviderEnabled(String provider) {              // TODO Auto-generated method stub              Log.i("激活提供商", "Invode");          }         //若状态发生变化，该方法被调用          @Override          public void onStatusChanged(String provider, int status, Bundle extras) {              // TODO Auto-generated method stub              Log.i("状态发生变化", "Invode");          }        }      private boolean checkgps(){          boolean providerEnabled           = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);          //若被激活，则返回真值          if(providerEnabled ==true){              Toast.makeText(this, "Gps模块活动正常", Toast.LENGTH_SHORT).show();              return true;          }          else{              Toast.makeText(this, "请开启GPS", Toast.LENGTH_SHORT);              return false;          }        }    }

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>  <manifest xmlns:android="http://schemas.android.com/apk/res/android"        package="com.android.antking.gps"        android:versionCode="1"        android:versionName="1.0">      <uses-sdk android:minSdkVersion="7" />      <uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION"></uses-permission>      <uses-permission android:name="android.permission.UPDATE_DEVICE_STATS"></uses-permission>      <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>      <uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS"></uses-permission>      <application android:icon="@drawable/icon" android:label="@string/app_name">          <activity android:name=".GPSActivity"                    android:label="@string/app_name">              <intent-filter>                  <action android:name="android.intent.action.MAIN" />                  <category android:name="android.intent.category.LAUNCHER" />              </intent-filter>          </activity>        </application>  </manifest>