android.location.geocoder的问题

Question

我知道网站上有很多关于以下内容的问题IOExeption:服务不可用.....我已经检查了我能找到的关于这个主题的所有答案...我正在运行它async task似乎工作得很好但仍然得到相同的例外.

我已经使用isPresent()过以前的尝试,虽然它不在以下代码中,我使用相同的手机.我有互联网许可.我试图改变目标,google api看看是不是问题,但没有区别.

这是第四年项目的重要组成部分,因此任何帮助都是严肃的.在最近之前,ps从未使用过java或android,所以请原谅任何看起来编码的菜鸟.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    view1 = (TextView) findViewById(R.id.textView1);
    view2 = (TextView)findViewById(R.id.textView2);
    view3 = (TextView)findViewById(R.id.textView4);
    b1 = (Button) findViewById(R.id.button1);

    locationManager =
            (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);

    //provider =
      //      locationManager.getProvider(LocationManager.GPS_PROVIDER);

    final LocationListener listener = new LocationListener() {

        @Override
        public void onLocationChanged(Location location) {
            view2.setText(Double.toString(location.getLatitude()));
            view3.setText(Double.toString(location.getLongitude()));
            Double lat = Double.valueOf(location.getLatitude());
            Double longTemp = Double.valueOf(location.getLatitude());
            new geo().execute(lat,longTemp);
            }

        @Override
        public void onProviderDisabled(String provider) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onProviderEnabled(String provider) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onStatusChanged(String provider, int status,
                Bundle extras) {
            // TODO Auto-generated method stub

        }

    };
    b1.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            locReqest();
        }

        private void locReqest() {
            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 10000, 0, listener);
        }
    });

}

class geo extends AsyncTask<Double, Void, String>{
    Geocoder geocoder = new Geocoder(getApplicationContext(), Locale.getDefault());
    @Override
    protected String doInBackground(Double... params) {
           Address address = null;
           List<Address> addresses = null;
            try {
                // Call the synchronous getFromLocation() method by passing in the lat/long values.
                addresses = geocoder.getFromLocation(params[0].doubleValue(),params[1].doubleValue(), 1);
                address = addresses.get(0);
                if (address != null){
                    return "Got your address : " + address.getCountryName().toString();
                }
            } catch (IOException e) {
                e.printStackTrace();
                return "failed";
            }
            return"fail";
    }
    @Override
    protected void onPostExecute(String result) {
        // TODO Auto-generated method stub
        super.onPostExecute(result);
        //view1.setText(result);
        Toast.makeText(getApplicationContext(), "The address is: " + result, Toast.LENGTH_LONG).show();
    }


}

继承logcat

12-16 23:06:53.855: W/System.err(23578): java.io.IOException: Service not Available
12-16 23:06:53.865: W/System.err(23578):    at android.location.Geocoder.getFromLocation(Geocoder.java:136)
12-16 23:06:53.865: W/System.err(23578):    at com.boggerTech.local.Main$geo.doInBackground(Main.java:102)
12-16 23:06:53.880: W/System.err(23578):    at com.boggerTech.local.Main$geo.doInBackground(Main.java:1)
12-16 23:06:53.900: W/System.err(23578):    at android.os.AsyncTask$2.call(AsyncTask.java:264)
12-16 23:06:53.900: W/System.err(23578):    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
12-16 23:06:53.905: W/System.err(23578):    at java.util.concurrent.FutureTask.run(FutureTask.java:137)
12-16 23:06:53.915: W/System.err(23578):    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
12-16 23:06:53.915: W/System.err(23578):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
12-16 23:06:53.915: W/System.err(23578):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
12-16 23:06:53.920: W/System.err(23578):    at java.lang.Thread.run(Thread.java:856)
12-16 23:07:10.440: W/System.err(23578): java.io.IOException: Service not Available

Answer 1

Geocoder.isPresent() 在某些设备上可以返回false.

如果它返回true并且您仍然遇到问题,则可以使用Google Geocoding API创建自己的Geocoder

我创建了一个独立于平台的Geocoder库,可以在github和Maven Central中找到

dependencies {
    compile 'com.github.doctoror.geocoder:library:[version]'
}

编辑:上一个答案包含实现Geocoder的简短示例实现.