Как вызвать API для сбора информации в формате JSON с openweathermap.org в студии Android ⇐ Android

[Anonymous]

Я новичок в разработке для Android и создаю приложение погоды в студии Android с использованием Java.
Я хочу использовать API от openweathermap.org, чтобы получать информацию о погоде с использованием точек широты и долготы. Я сгенерировал ключ API, но когда я нажимаю на URL-адрес открытой карты погоды в своем коде, отображается ошибка 401, и никакая информация JSON не отображается, а когда я запускаю приложение в эмуляторе, отображается всплывающее сообщение «Запрос не выполнен». который я закодировал в методе onfailure. Я застрял в этой проблеме на 3 дня. Код прикрепляю ниже.

package com.londonappbrewery.climapm;
import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.RequestParams;
import com.loopj.android.http.JsonHttpResponseHandler;

import org.json.JSONObject;

import cz.msebera.android.httpclient.Header;

public class WeatherController extends AppCompatActivity {

// Constants:
final int REQUEST_CODE =123;
final String WEATHER_URL = "http://api.openweathermap.org/data/2.5/weather";
final String APP_ID = "8256c76143428856df5bc4985ff9e5ef";
// Time between location updates (5000 milliseconds or 5 seconds)
final long MIN_TIME = 5000;
// Distance between location updates (1000m or 1km)
final float MIN_DISTANCE = 1000;

// TODO: Set LOCATION_PROVIDER here:
String LOCATION_PROVIDER = LocationManager.GPS_PROVIDER;

// Member Variables:
TextView mCityLabel;
ImageView mWeatherImage;
TextView mTemperatureLabel;
LocationManager mLocationManager;
LocationListener mLocationListener;

// TODO: Declare a LocationManager and a LocationListener here:

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

// Linking the elements in the layout to Java code
mCityLabel = (TextView) findViewById(R.id.locationTV);
mWeatherImage = (ImageView) findViewById(R.id.weatherSymbolIV);
mTemperatureLabel = (TextView) findViewById(R.id.tempTV);
ImageButton changeCityButton = (ImageButton) findViewById(R.id.changeCityButton);

// TODO: Add an OnClickListener to the changeCityButton here:

}

// TODO: Add onResume() here:
@Override
protected void onResume() {
super.onResume();
getWeatherForCurrentLocation();
}

// TODO: Add getWeatherForNewCity(String city) here:

// TODO: Add getWeatherForCurrentLocation() here:
private void getWeatherForCurrentLocation() {
mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
mLocationListener = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
Log.d("Clima","onLocationChanges() callback recieved");
String latitude= String.valueOf(location.getLatitude());
String longitude= String.valueOf(location.getLongitude());
Log.d("Clima","latitude is"+latitude);
Log.d("Clima","longitude is"+longitude);
RequestParams params= new RequestParams();
params.put("lat",latitude);
params.put("lon",longitude);
params.put("appid",APP_ID);
letsDoSomeNetworking(params);

}

@Override
public void onStatusChanged(String s, int i, Bundle bundle) {

}

@Override
public void onProviderEnabled(String s) {

}

@Override
public void onProviderDisabled(String s) {
Log.d("Clima","onProviderDisabled(), callback recieved");

}
};
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.ACCESS_FINE_LOCATION},REQUEST_CODE);

return;
}
mLocationManager.requestLocationUpdates(LOCATION_PROVIDER, MIN_TIME, MIN_DISTANCE, mLocationListener);
}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if(requestCode==REQUEST_CODE){
if(grantResults.length>0 && grantResults[0]==PackageManager.PERMISSION_GRANTED){
Log.d("Clima","Permission granted!");
}
}
else{
Log.d("Clima","Permission denied");
}
}
// TODO: Add letsDoSomeNetworking(RequestParams params) here:
private void letsDoSomeNetworking(RequestParams params){
AsyncHttpClient client = new AsyncHttpClient();
client.get(WEATHER_URL, params,new JsonHttpResponseHandler(){
@Override
public void onSuccess(int statusCode, Header[] headers, JSONObject response){
Log.d("Clima","Success ! JSON "+response.toString());
WeatherDataModel weatherData = WeatherDataModel.fromJson(response);
Toast.makeText(WeatherController.this,"Request succesfull",Toast.LENGTH_SHORT).show();

updateUI(weatherData);
}
@Override
public void onFailure(int statusCode,Header[] headers, Throwable e,JSONObject response){
Log.d("Clima","Fail ! "+e.toString());
Log.d("Clima","Status Code"+ statusCode);
Toast.makeText(WeatherController.this,"Request failed!",Toast.LENGTH_SHORT).show();

}

});
}

// TODO: Add updateUI() here:
private void updateUI(WeatherDataModel weather){
mTemperatureLabel.setText(weather.getTemperature());
mCityLabel.setText(weather.getCity());

int ResourceID= getResources().getIdentifier(weather.getIconName(),"drawable",getPackageName());
mWeatherImage.setImageResource(ResourceID);

}

// TODO: Add onPause() here:

}


Подробнее здесь: https://stackoverflow.com/questions/624 ... android-st