Question

我正在使用以下代码在android中设置mapview并显示效果良好的位置标记。

此外，我正在尝试使用maps.googleapis.com和我的api密钥来检索+显示附近的XML附近位置数据，或者使用Toast消息，或者在调试器中

我知道我不应该在主线程上运行HTTPrequest，但出于调试目的，我只是想确认我实际上正在检索所需的JSON数据

（它在浏览器中使用“https://maps.googleapis.com/maps/api/place/search/json?location=39.9165171,116.450872&radius=50&sensor=false&key=MYKEY”）例如

我无法解决Logcat中的主机错误

public class MainActivity extends MapActivity implements LocationListener {

    MyLocationOverlay myLocationOverlay;

    public MapView mapView;
    MapController mc;

    OverlayItem overlayitem;
    List<Overlay> mapOverlays;
    HelloItemizedOverlay itemizedoverlay;
    GeoPoint myLocationGeoPoint;
    String result = "nothing";

    private MockGpsProvider mMockGpsProviderTask = null;

    /* This method is called when use position will get changed */
    public void onLocationChanged(Location location) {

        final String TAG = getClass().getSimpleName();  
        String googleAPIKey = "xxxxxxxxx"; 
        String searchRadius = "50";
        String baseUrl = "https://maps.googleapis.com/maps/api/place/search/json?";
        String lat = String.valueOf(location.getLatitude());
        String lon = String.valueOf(location.getLongitude());
        String url = baseUrl + "location=" + lat + "," + lon + "&" +
               "radius=" + searchRadius + "&" + "sensor=false" +
               "&" + "key=" + googleAPIKey;
        Log.v(TAG,url);
        Toast.makeText(this, url, Toast.LENGTH_LONG).show();

        HttpClient httpclient = new DefaultHttpClient();  
        HttpGet request = new HttpGet(url);  

        ResponseHandler<String> handler = new BasicResponseHandler();  
    try {  
        result = httpclient.execute(request, handler); 
    } catch (ClientProtocolException e) {  
        e.printStackTrace();  
    } catch (IOException e) {  
        e.printStackTrace();  
    }  
    httpclient.getConnectionManager().shutdown(); 

    Log.v(TAG,result);
    Toast.makeText(this, result, Toast.LENGTH_LONG).show();
}

Answer 1

没关系，通过执行异步任务+ json解析来弄明白

Android maps.googleapis.com，检索JSON数据的问题

1 个答案: