Ladediog bis GPS verfügbar

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12.06.2018, 19:30:25 via Website

Wie kann ich einen loading Dialog anzeigen, solange die gps daten abgefragt werden?

— geändert am 13.06.2018, 03:21:01 durch Moderator

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  • Forum-Beiträge: 2

12.06.2018, 19:33:11 via Website

import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.ProgressDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Build;
import android.provider.Settings;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.view.View;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.Switch;
import android.widget.TextView;
import android.widget.Toast;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.Volley;

import org.json.JSONException;
import org.json.JSONObject;

import java.io.IOException;
import java.util.List;
import java.util.Locale;
import java.util.Objects;

public class MainActivity extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener {
Activity activity;

android.support.v7.widget.Toolbar toolbar;
private TextView temperatureTextView, conditionTextView, lastUpdateTextView, yahooWeatherTextView;
private EditText locationEditText;
private ImageView weatherImageView;
private ImageButton searchImageButton;
Switch gpsSwitch = null;
private ProgressDialog loadingDialog = new ProgressDialog(this);
private LocationManager locationManager;
private LocationListener locationListener;
RequestQueue requestQueue;

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

    //findViewById
    locationEditText = findViewById(R.id.locationEditText);
    searchImageButton = findViewById(R.id.searchImageButton);
    yahooWeatherTextView = findViewById(R.id.yahooWeatherTextView);
    weatherImageView = findViewById(R.id.weatherImageView);
    temperatureTextView = findViewById(R.id.temperatureTextView);
    conditionTextView = findViewById(R.id.conditionTextView);
    lastUpdateTextView = findViewById(R.id.lastUpdateTextView);
    this.activity = this;

    //Toolbar
    toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    Objects.requireNonNull(getSupportActionBar()).setTitle("Weather App with Yahoo API");
    getSupportActionBar().setIcon(getDrawable(R.drawable.ic_action_dhbw));

    //setVisibility
    locationEditText.setVisibility(View.INVISIBLE);
    searchImageButton.setVisibility(View.INVISIBLE);

    //function Switch
    gpsSwitch = findViewById(R.id.gpsSwitch);
    gpsSwitch.setOnCheckedChangeListener(this);

    //function of ImageButton
    searchImageButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            final String EditTextCity = locationEditText.getText().toString();
            locationEditText.setText("");
            getWeatherInfoEditText(EditTextCity);
        }
    });



    //get location
    locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
    locationListener = new LocationListener() {
        //when there is a new location
        @Override
        public void onLocationChanged(Location location) {
            double latitude = location.getLatitude();
            double longitude = location.getLongitude();
            Geocoder geocoder = new Geocoder(MainActivity.this, Locale.getDefault());
            List<Address> addresses;
            try {
                addresses = geocoder.getFromLocation(latitude, longitude, 1);
                if (addresses.size() > 0) {
                    String gpsCity = addresses.get(0).getLocality();
                    getWeatherInfoGPS(gpsCity);
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }


        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {
        }

        @Override
        public void onProviderEnabled(String provider) {
        }

        //check if GPS is disabled
        @Override
        public void onProviderDisabled(String provider) {
            Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
            startActivity(intent);
        }

    };

    //start message allow GPS
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            requestPermissions(new String[]{
                    Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.INTERNET
            }, 10);
        }
    } else {
        getlocation();
    }
}

//if Switch true&false
@Override
public void onCheckedChanged(CompoundButton gpsSwitch, boolean isChecked) {
    if (isChecked) {
        locationEditText.setVisibility(View.INVISIBLE);
        searchImageButton.setVisibility(View.INVISIBLE);
        //getWeatherInfoGPS(String gpsCity);


    } else {
        locationEditText.setVisibility(View.VISIBLE);
        searchImageButton.setVisibility(View.VISIBLE);
    }
}

//get WeatherInfo for GPS
public void getWeatherInfoGPS(String gpsCity) {
    try {
        loadingDialog = new ProgressDialog(this);
        loadingDialog.setMessage(getString(R.string.loading));
        loadingDialog.setCancelable(false);
        loadingDialog.show();
        new Thread() {
            public void run() {
                try {
                    sleep(1000);
                } catch (Exception ignored) {
                }
                loadingDialog.dismiss();
            }
        }.start();
        requestQueue = Volley.newRequestQueue(this);
        url = url.replaceAll(" ", "%20");
        final JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
            @SuppressLint("SetTextI18n")
            @Override
            public void onResponse(JSONObject response) {
                try {
                    //Yahoo! Weather for city, region, country
                    String header = response.getJSONObject("query").getJSONObject("results").getJSONObject("channel").getString("description");
                    //weather image code
                    int imagecode = response.getJSONObject("query").getJSONObject("results").getJSONObject("channel").getJSONObject("item").getJSONObject("condition").getInt("code");
                    //temperature
                    int temperature = response.getJSONObject("query").getJSONObject("results").getJSONObject("channel").getJSONObject("item").getJSONObject("condition").getInt("temp");
                    //condition
                    String condition = response.getJSONObject("query").getJSONObject("results").getJSONObject("channel").getJSONObject("item").getJSONObject("condition").getString("text");
                    //last update
                    String lastupdate = response.getJSONObject("query").getJSONObject("results").getJSONObject("channel").getString("lastBuildDate");

                    //setTitle
                    yahooWeatherTextView.setText(header);
                    //setImage
                    int WeatherImageCode = getResources().getIdentifier("dhbw.weatherappwithyahooapi:drawable/icon_" + imagecode, null, null);
                    weatherImageView.setImageResource(WeatherImageCode);
                    //setTemperature
                    temperatureTextView.setText(temperature + " °C");
                    //setCondition
                    conditionTextView.setText(condition);
                    //setLastUpdate
                    lastUpdateTextView.setText("last update: " + lastupdate);
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                Toast.makeText(activity, "Sorry, weather is currently not available! \uD83D\uDE15", Toast.LENGTH_LONG).show();
            }
        });
        Volley.newRequestQueue(this).add(request);
    } catch (Exception ignored) {
    }
}

//get WeatherInfo for EditText
public void getWeatherInfoEditText(String EditTextCity) {
    try {
        loadingDialog = new ProgressDialog(this);
        loadingDialog.setMessage(getString(R.string.loading));
        loadingDialog.setCancelable(false);
        loadingDialog.show();
        new Thread() {
            public void run() {
                try {
                    sleep(1000);
                } catch (Exception ignored) {
                }
                loadingDialog.dismiss();
            }
        }.start();
        requestQueue = Volley.newRequestQueue(this);
        url = url.replaceAll(" ", "%20");
        final JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
            @SuppressLint("SetTextI18n")
            @Override
            public void onResponse(JSONObject response) {
                try {
                    //Yahoo! Weather for city, region, country
                    String header = response.getJSONObject("query").getJSONObject("results").getJSONObject("channel").getString("description");
                    //weather image code
                    int imagecode = response.getJSONObject("query").getJSONObject("results").getJSONObject("channel").getJSONObject("item").getJSONObject("condition").getInt("code");
                    //temperature
                    int temperature = response.getJSONObject("query").getJSONObject("results").getJSONObject("channel").getJSONObject("item").getJSONObject("condition").getInt("temp");
                    //condition
                    String condition = response.getJSONObject("query").getJSONObject("results").getJSONObject("channel").getJSONObject("item").getJSONObject("condition").getString("text");
                    //last update
                    String lastupdate = response.getJSONObject("query").getJSONObject("results").getJSONObject("channel").getString("lastBuildDate");

                    //setTitle
                    yahooWeatherTextView.setText(header);
                    //setImage
                    int WeatherImageCode = getResources().getIdentifier("dhbw.weatherappwithyahooapi:drawable/icon_" + imagecode, null, null);
                    weatherImageView.setImageResource(WeatherImageCode);
                    //setTemperature
                    temperatureTextView.setText(temperature + " °C");
                    //setCondition
                    conditionTextView.setText(condition);
                    //setLastUpdate
                    lastUpdateTextView.setText("last update: " + lastupdate);
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                Toast.makeText(activity, "Sorry, weather is currently not available! \uD83D\uDE15", Toast.LENGTH_LONG).show();
            }
        });
        Volley.newRequestQueue(this).add(request);
    } catch (Exception ignored) {
    }
}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    switch (requestCode) {
        case 10:
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED)
                getlocation();
    }
}

//get location
private void getlocation() {
    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.
        return;
    }
    locationManager.requestSingleUpdate(LocationManager.GPS_PROVIDER, locationListener, null);
}

//when app opan again, load new gps data
@Override
protected void onStop() {
    super.onStop();
    finish();
}

}

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Pascal P.
  • Mod
  • Blogger
  • Forum-Beiträge: 10.168

13.06.2018, 03:22:35 via App

Hallo madu31,
ohne deine. Code gelesen zu haben:

ProgressDialog öffnen wenn du den GPS request sendest und schließen wenn Daten verfügbar.
Ansonsten eine. Tipp: Steukturiere deinen Code in verschiedene Klassen. Wird dann deutlich übersichtlicher...

LG Pascal //It's not a bug, it's a feature. :) ;)

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