public class MainActivity extends Activity {
    
    private LocationManager lm;
    
    private MyLocationListener listener;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        lm = (LocationManager) getSystemService(LOCATION_SERVICE);
        listener = new MyLocationListener();
        lm.requestLocationUpdates("gps", 0, 0, listener);
        
    }
    
    public class MyLocationListener implements LocationListener{

        //当位置发生变化的时候
        @Override
        public void onLocationChanged(Location location) {
            String  longitude = "经度："+location.getLongitude()+"\n";
            String  latitude = "纬度："+location.getLatitude()+"\n";
            String accuracy = "精确度："+location.getAccuracy()+"\n";
            
            TextView textView = new TextView(MainActivity.this);
            textView.setText(longitude+latitude+accuracy);
            setContentView(textView);
            
        }

        //某个位置提供者的状态发生变化的时候 打开--》关闭 ；关闭--》开启
        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {
             
        }

        //某个位置提供者可用
        @Override
        public void onProviderEnabled(String provider) {
            
        }
        //某个位置提供者不可用

        @Override
        public void onProviderDisabled(String provider) {
            
        }
        
        
    }
    
    @Override
    protected void onDestroy() {
        super.onDestroy();
        lm.removeUpdates(listener);
        listener = null;
        
    }

    

}

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