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android api android-asynctask geonames

android-我无法使用Geonames API从邮政编码中获得城市名称

(android - I am unable to get the City name from postal code using Geonames API)

发布于 2020-06-18 11:30:38

我正在尝试使用Geonames API从邮政编码中搜索或获取城市名称。

但是，我得到了一个空值期望。

以下是我获得邮政编码的代码，并将其传递给AsyncTask以在后台执行

private void sharedPreferenceCreate(final String userAddress, Double latitude, Double longitude, Intent data) throws Exception {

    final String City;
    final String Country;
    final String State;

    Geocoder gcd = new Geocoder(MainActivity.this, Locale.getDefault());
    List<Address> addresses = null;

    try {
        addresses = gcd.getFromLocation(latitude, longitude, 1);
    } catch (IOException e) {
        e.printStackTrace();
    }

    if (addresses.size() > 0) {

        City= addresses.get(0).getLocality();
        Country= addresses.get(0).getCountryName();
        State= addresses.get(0).getAdminArea();
        String q=addresses.get(0).getSubLocality();
        String w=addresses.get(0).getFeatureName();
        String e=addresses.get(0).getPostalCode();  //Here I get the Postal code
        String r=addresses.get(0).getSubAdminArea();
        String t=addresses.get(0).getPremises();
        String g= e+"&country=";

        urlBackground background= new urlBackground();

        background.doInBackground(e);
        background.execute();

        Log.i(TAG, "sharedPreferenceCreate: "+city);

        distanceRestaurant(latitude,longitude, City,Country,State);
              }).show();

    }
    else {
        Toast.makeText(this, "Unable to fetch your location, try again", Toast.LENGTH_SHORT).show();
    }
}

这是我的AsyncTask类

public class urlBackground extends AsyncTask<String, Void, String> {

    String result;

    public urlBackground() {
    }

    @Override
    protected String doInBackground(String... strings) {

        WebService.setUserName("Jack"); // add your username here

        ToponymSearchCriteria searchCriteria = new ToponymSearchCriteria();
        searchCriteria.setQ(String.valueOf(strings));
        ToponymSearchResult searchResult = new ToponymSearchResult();

        try {
            searchResult = WebService.search(searchCriteria);
        } catch (Exception e) {
            e.printStackTrace();
        }

        for (Toponym toponym : searchResult.getToponyms()) //When I run the Code it skip this line IDK Why?? 
              {
            System.out.println(toponym.getName()+" "+ toponym.getCountryName());

            try {
                result= toponym.getAdminCode3();
            } catch (InsufficientStyleException e) {
                e.printStackTrace();
            }
        }

        return result; // I get null Value
    }
}

当我使用WebSite Geonames.org并从邮政编码中搜索城市名称时，我就能得到它。

谁能帮我！！就像我尝试做2天一样，但仍然得到空引用

堆栈跟踪

2020-06-18 17:39:08.171 18749-18749/com.chonang.main D/VanillaMapActivity: AddressResultReceiver.onReceiveResult: address: Pilongri Bhavan, Vaikang Road, Rongkhelan, Diphu, Assam 782460, India
2020-06-18 17:39:09.682 18749-19054/com.chonang.main D/FetchAddressIntentService: Addresses >> [{}]
2020-06-18 17:39:09.683 18749-19054/com.chonang.main I/FetchAddressIntentService: Address found
2020-06-18 17:39:09.684 18749-18749/com.chonang.main D/VanillaMapActivity: AddressResultReceiver.onReceiveResult: address: NH329, Assam 782460, India
2020-06-18 17:39:18.957 18749-18749/com.chonang.main W/om.chonang.mai: Got a deoptimization request on un-deoptimizable method java.net.InetAddress[] libcore.io.Linux.android_getaddrinfo(java.lang.String, android.system.StructAddrinfo, int)
2020-06-18 17:39:18.958 18749-18749/com.chonang.main W/System.err: android.os.NetworkOnMainThreadException
2020-06-18 17:39:18.959 18749-18749/com.chonang.main W/System.err:     at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1565)
2020-06-18 17:39:18.960 18749-18749/com.chonang.main W/System.err:     at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:115)
2020-06-18 17:39:18.961 18749-18749/com.chonang.main W/System.err:     at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:103)
2020-06-18 17:39:18.962 18749-18749/com.chonang.main W/System.err:     at java.net.InetAddress.getAllByName(InetAddress.java:1152)
2020-06-18 17:39:18.962 18749-18749/com.chonang.main W/System.err:     at com.android.okhttp.Dns$1.lookup(Dns.java:41)
2020-06-18 17:39:18.963 18749-18749/com.chonang.main W/System.err:     at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:178)
2020-06-18 17:39:18.964 18749-18749/com.chonang.main W/System.err:     at com.android.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:144)
2020-06-18 17:39:18.965 18749-18749/com.chonang.main W/System.err:     at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:86)
2020-06-18 17:39:18.966 18749-18749/com.chonang.main W/System.err:     at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:176)
2020-06-18 17:39:18.967 18749-18749/com.chonang.main W/System.err:     at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:128)
2020-06-18 17:39:18.968 18749-18749/com.chonang.main W/System.err:     at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:97)
2020-06-18 17:39:18.969 18749-18749/com.chonang.main W/System.err:     at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:289)
2020-06-18 17:39:18.970 18749-18749/com.chonang.main W/System.err:     at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:232)
2020-06-18 17:39:18.971 18749-18749/com.chonang.main W/System.err:     at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:465)
2020-06-18 17:39:18.972 18749-18749/com.chonang.main W/System.err:     at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:411)
2020-06-18 17:39:18.973 18749-18749/com.chonang.main W/System.err:     at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:248)
2020-06-18 17:39:18.974 18749-18749/com.chonang.main W/System.err:     at org.geonames.WebService.connect(WebService.java:235)
2020-06-18 17:39:18.974 18749-18749/com.chonang.main W/System.err:     at org.geonames.WebService.connectAndParse(WebService.java:302)
2020-06-18 17:39:18.975 18749-18749/com.chonang.main W/System.err:     at org.geonames.WebService.search(WebService.java:1292)
2020-06-18 17:39:18.976 18749-18749/com.chonang.main W/System.err:     at com.chonang.main.MainActivity$urlBackground.doInBackground(MainActivity.java:344)
2020-06-18 17:39:18.977 18749-18749/com.chonang.main W/System.err:     at com.chonang.main.MainActivity.sharedPreferenceCreate(MainActivity.java:283)
2020-06-18 17:39:18.978 18749-18749/com.chonang.main W/System.err:     at com.chonang.main.MainActivity.onActivityResult(MainActivity.java:142)
2020-06-18 17:39:18.978 18749-18749/com.chonang.main W/System.err:     at android.app.Activity.dispatchActivityResult(Activity.java:8135)
2020-06-18 17:39:18.980 18749-18749/com.chonang.main W/System.err:     at android.app.ActivityThread.deliverResults(ActivityThread.java:4955)
2020-06-18 17:39:18.981 18749-18749/com.chonang.main W/System.err:     at android.app.ActivityThread.handleSendResult(ActivityThread.java:5003)
2020-06-18 17:39:18.982 18749-18749/com.chonang.main W/System.err:     at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:51)
2020-06-18 17:39:18.983 18749-18749/com.chonang.main W/System.err:     at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
2020-06-18 17:39:18.983 18749-18749/com.chonang.main W/System.err:     at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
2020-06-18 17:39:18.984 18749-18749/com.chonang.main W/System.err:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2109)
2020-06-18 17:39:18.985 18749-18749/com.chonang.main W/System.err:     at android.os.Handler.dispatchMessage(Handler.java:107)
2020-06-18 17:39:18.985 18749-18749/com.chonang.main W/System.err:     at android.os.Looper.loop(Looper.java:214)
2020-06-18 17:39:18.986 18749-18749/com.chonang.main W/System.err:     at android.app.ActivityThread.main(ActivityThread.java:7682)
2020-06-18 17:39:18.986 18749-18749/com.chonang.main W/System.err:     at java.lang.reflect.Method.invoke(Native Method)
2020-06-18 17:39:18.987 18749-18749/com.chonang.main W/System.err:     at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:516)
2020-06-18 17:39:18.988 18749-18749/com.chonang.main W/System.err:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)`

我进行了一些更改，但仍然无效。

这是我更新的代码

 @Override
    protected String doInBackground(String... strings) {

         StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);

        SharedPreferences sharedPreferences= getSharedPreferences("POSTAL",MODE_PRIVATE);
        String code= sharedPreferences.getString("postal","");

        WebService.setUserName("jack"); // add your username here

        String result= new String();

        ToponymSearchCriteria searchCriteria= new ToponymSearchCriteria();
        searchCriteria.setQ(code);

        ToponymSearchResult searchResult = new ToponymSearchResult();
        try {
            searchResult = WebService.search(searchCriteria);
        } catch (Exception e) {
            e.printStackTrace();
        }

        for (Toponym tp: searchResult.getToponyms()){

            result= tp.getAdminName3();
            Log.i(TAG, "doInBackground: city name is "+ result);
        }

        Log.i(TAG, "doInBackground: postal Admin3 name is"+ result);


        return result;// ignore this value!!
    }

但是，当我在Web上搜索结果时，会得到结果：

在此处输入图片说明

Questioner
Wade
Viewed
0
分享
Wade 2020-06-19 19:38:43

我要感谢所有尝试给我答案的人。不幸的是，我没有得到答案。但是，经过两天的奋斗，我终于能够获得所需的结果。使用邮政编码，我能够获得城市名称。

我添加的以上内容是正确的，但没错，但是由于Strick模式，我无法获取它。但是仍然有一个问题，我使用以下代码代替了ToponmySearch：

PostalCodeSearchCriteria codeSearchCriteria= new PostalCodeSearchCriteria();
            codeSearchCriteria.setPostalCode("<Past_Your_postal_code_here>");
    List<PostalCode> postalCodes= WebService.postalCodeSearch(codeSearchCriteria);
                String ci= postalCodes.get(0).getAdminName3(); //CityName
                String cq= postalCodes.get(0).getAdminCode1();//StateName
                String cw= postalCodes.get(0).getAdminName2();//DistrictName
                String ce= postalCodes.get(0).getPlaceName();//PlaceName and etc many more you cam call there.```

希望对其他希望从邮政编码中获得城市名称的人有所帮助。但是，你必须在GEONAMES.ORG中拥有一个帐户，并且已经激活了免费服务选项。之后，你将可以从邮政编码中获取所需的值。你必须为此使用Geonames API。

谢谢！！

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