我正在使用Yelp API，现在我正在使用静态方法根据位置和术语进行API调用。我想让这个动态，点击按钮我应该点击API并根据我当前的位置获取餐馆列表，即纬度和经度。我在下面的代码中尝试了这个但是不起作用。
MainActivity.java package com ........ projectmaw;
import android.Manifest;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
double latitude; // Latitude
double longitude; // Longitude
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
/*
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});*/
Log.v("TAG", "MainOnCreate");
Button searchButton = (Button) findViewById(R.id.restCall);
Log.v("TAG", "Button Created");
searchButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// instantiate the location manager, note you will need to request permissions in your manifest
LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
// get the last know location from your location manager.
if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getApplicationContext(), 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;
}
Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
// now get the lat/lon from the location and do something with it.
latitude = location.getLatitude();
longitude = location.getLongitude();
Log.d("Lat and Lon", "lat " + latitude + " " + "Lon " + longitude);
search();
}
});
}
public void search() {
Log.v("TAG", "search");
Intent intent = new Intent("android.intent.action.YELPSEARCH");
startActivity(intent);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}/* End of MainActivity Activity */
Yelp.java
import android.content.Context;
import android.util.Log;
import org.scribe.builder.ServiceBuilder;
import org.scribe.model.OAuthRequest;
import org.scribe.model.Response;
import org.scribe.model.Token;
import org.scribe.model.Verb;
import org.scribe.oauth.OAuthService;
public class Yelp {
OAuthService service;
Token accessToken;
static String YELP_CONSUMER_KEY ="xxxxxxxxxxxxxxxxxxxx";
static String YELP_CONSUMER_SECRET = "xxxxxxxxxxxxxxxxxxxx";
static String YELP_TOKEN = "xxxxxxxxxxxxxxxxxxxx";
static String YELP_TOKEN_SECRET = "xxxxxxxxxxxxxxxxxxxx";
public static Yelp getYelp(Context context) {
return new Yelp(YELP_CONSUMER_KEY, YELP_CONSUMER_SECRET,
YELP_TOKEN, YELP_TOKEN_SECRET);
}
public Yelp(String consumerKey, String consumerSecret, String token, String tokenSecret) {
this.service = new ServiceBuilder().provider(TwoStepOAuth.class).apiKey(consumerKey).apiSecret(consumerSecret).build();
this.accessToken = new Token(token, tokenSecret);
}
public String search(String term, String location) {
Log.v("TAG","YelpSearch");
OAuthRequest request = new OAuthRequest(Verb.GET, "http://api.yelp.com/v2/search");
request.addQuerystringParameter("term", term);
request.addQuerystringParameter("location", location);
this.service.signRequest(this.accessToken, request);
Log.v("TAG","Before Response");
Response response = request.send();
Log.v("TAG","response :"+response.getBody());
return response.getBody();
}
}
YelpHelper.java
import android.app.ListActivity;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class YelpSearch extends ListActivity implements Serializable {
@SuppressWarnings("serial")
class Business implements Serializable {
final String name;
final String url;
final String id;
final String rating;
public Business(String name, String url, String id, String rating) {
this.name = name;
this.url = url;
this.id = id;
this.rating = rating;
}
@Override
public String toString() {
return "name :"+name+""+"ID : "+id;
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
super.onCreate(savedInstanceState);
setTitle("Finding Tacos...");
setProgressBarIndeterminateVisibility(true);
Log.v("TAG","YelpSearchOnCreate");
new AsyncTask<Void, Void, List<Business>>() {
@Override
protected List<Business> doInBackground(Void... params) {
Log.v("TAG","Async List");
String businesses = Yelp.getYelp(YelpSearch.this).search("food", "91754");
Log.v("TAG","String businsesses"+businesses);
try {
Log.v("TAG","try");
return processJson(businesses);
} catch (JSONException e) {
return Collections.<Business>emptyList();
}
}
@Override
protected void onPostExecute(List<Business> businesses) {
Log.v("TAG","onPostExecute");
Log.v("BusinessesList","Businesses "+ businesses);
//setTitle("Tacos Found");
setProgressBarIndeterminateVisibility(false);
getListView().setAdapter(new ArrayAdapter<Business>(YelpSearch.this, android.R.layout.simple_list_item_1, businesses));
}
}.execute();
}
@Override
protected void onListItemClick(ListView listView, View view, int position, long id) {
Business biz = (Business) listView.getItemAtPosition(position);
Log.v("Sending data to Detail","hi "+biz);
startActivity(new Intent(getApplicationContext(), YelpBizDetail.class).putExtra("Detailclass",biz));
}
List<Business> processJson(String jsonStuff) throws JSONException {
JSONObject json = new JSONObject(jsonStuff);
JSONArray businesses = json.getJSONArray("businesses");
ArrayList<Business> businessObjs = new ArrayList<Business>(businesses.length());
for (int i = 0; i < businesses.length(); i++) {
JSONObject business = businesses.getJSONObject(i);
businessObjs.add(new Business(business.optString("name"), business.optString("mobile_url"),business.optString("id"),business.optString("rating")));
}
return businessObjs;
}
}
如何使这项工作。