获取位置(LocationManager)

1. 需要申请权限

    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
   

2. 代码

    public class TestgpsActivity extends Activity {
        private LocationManager lm;
        private MyListener listener;
   
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
            lm = (LocationManager) getSystemService(LOCATION_SERVICE);
   
            Criteria criteria = new Criteria();
            criteria.setAccuracy(Criteria.ACCURACY_FINE);
            criteria.setCostAllowed(true);
            criteria.setPowerRequirement(Criteria.POWER_HIGH);
            criteria.setSpeedRequired(true);
            String provider = lm.getBestProvider(criteria, true);
            //第一个参数 位置提供者 第二个参数 最短更新时间 第三参数 最短的更新的距离
            listener = new MyListener();
            lm.requestLocationUpdates(provider, 0, 0, listener);
   
        }
        @Override
        protected void onDestroy() {
            lm.removeUpdates(listener);
            super.onDestroy();
        }
   
        private class MyListener implements LocationListener{
   
            /**
             * 当位置改变的时候
             */
            @Override
            public void onLocationChanged(Location location) {
                float accuracy = location.getAccuracy();
                double wlong = location.getLatitude(); //纬度
                double jlong = location.getLongitude(); //经度
   
                TextView tv = new TextView(getApplicationContext());
                tv.setText("经度:"+jlong+"\n"+"纬度:"+wlong+"\n"+ accuracy);
                setContentView(tv);
   
            }
            /**
             * 某一个位置提供者的状态发生改变的时候调用的方法
             */
            @Override
            public void onStatusChanged(String provider, int status, Bundle extras) {
   
            }
   
            @Override
            public void onProviderEnabled(String provider) {
   
            }
   
            @Override
            public void onProviderDisabled(String provider) {
   
            }
        }
    }
   

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