我希望通过ListView中的应用登录Facebook后显示好友列表。但我的代码不起作用。我也使用了像friendsArrayAdapter这样的类。我使用了以下代码
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.friendlist_screen);
facebook = new Facebook(APP_ID);
mAsyncRunner = new AsyncFacebookRunner(facebook);
lv = (ListView) findViewById(R.id.friendsList);
friendsArrayAdapter = new FriendsArrayAdapter(this, R.layout.rowlayout, friends);
lv.setAdapter(friendsArrayAdapter);
}
FriendsRequestListener.class
public class FriendsRequestListener implements com.facebook.android.AsyncFacebookRunner.RequestListener {
public void onComplete(final String response, Object state) {
mSpinner.dismiss();
try {
// process the response here: executed in background thread
Log.d("Facebook-Example-Friends Request", "response.length(): " + response.length());
Log.d("Facebook-Example-Friends Request", "Response: " + response);
final JSONObject json = new JSONObject(response);
JSONArray d = json.getJSONArray("data");
int l = (d != null ? d.length() : 0);
Log.d("Facebook-Example-Friends Request", "d.length(): " + l);
for (int i = 0; i < l; i++) {
JSONObject o = d.getJSONObject(i);
String n = o.getString("name");
String id = o.getString("id");
Friend f = new Friend();
f.id = id;
f.name = n;
friends.add(f);
}
// Only the original owner thread can touch its views
FrndActivity.this.runOnUiThread(new Runnable() {
public void run() {
friendsArrayAdapter = new FriendsArrayAdapter(
FrndActivity.this, R.layout.rowlayout, friends);
lv.setAdapter(friendsArrayAdapter);
friendsArrayAdapter.notifyDataSetChanged();
}
});
} catch (JSONException e) {
Log.w("Facebook-Example", "JSON Error in response");
}
}
请提示如何在ListView中显示名称，以及我是否需要为此事做任何其他课程？
答案 0 :(得分：5)
MainActivity.java
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.ArrayList;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import com.facebook.android.AsyncFacebookRunner;
import com.facebook.android.AsyncFacebookRunner.RequestListener;
import com.facebook.android.DialogError;
import com.facebook.android.Facebook;
import com.facebook.android.FacebookError;
import com.facebook.android.Facebook.DialogListener;
import com.facebook.android.Util;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;
@SuppressWarnings("deprecation")
public class MainActivity extends Activity {
// Your Facebook APP ID
private static String APP_ID = "197574013719352"; // Replace your App ID here
// Instance of Facebook Class
public static Facebook facebook = null;
public static AsyncFacebookRunner mAsyncRunner = null;
String FILENAME = "AndroidSSO_data";
private SharedPreferences mPrefs;
String _error;
Button button;
ArrayList<String> friends_list;
ListView lv;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
setContentView(R.layout.main);
facebook = new Facebook(APP_ID);
mAsyncRunner = new AsyncFacebookRunner(facebook);
friends_list = new ArrayList<String>();
button = (Button) findViewById(R.id.button);
lv = (ListView) findViewById(R.id.list);
button.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
loginToFacebook();
}
});
}
public void loginToFacebook() {
mPrefs = getPreferences(MODE_PRIVATE);
if (!facebook.isSessionValid()) {
facebook.authorize(this, new String[] { "email", "publish_stream" },
new DialogListener() {
@Override
public void onCancel() {
// Function to handle cancel event
}
@Override
public void onComplete(Bundle values) {
// Function to handle complete event
// Edit Preferences and update facebook acess_token
SharedPreferences.Editor editor = mPrefs.edit();
editor.putString("access_token",
facebook.getAccessToken());
editor.putLong("access_expires",
facebook.getAccessExpires());
editor.commit();
mAsyncRunner.request("me/friends", new FriendsRequestListener());
Toast.makeText(getApplicationContext(), "Success ", Toast.LENGTH_LONG).show();
button.setText("LogOut");
}
@Override
public void onError(DialogError error) {
// Function to handle error
}
@Override
public void onFacebookError(FacebookError fberror) {
// Function to handle Facebook errors
}
});
}
}
private class FriendsRequestListener implements RequestListener {
String friendData;
//Method runs when request is complete
public void onComplete(String response, Object state) {
Log.v("", "FriendListRequestONComplete");
//Create a copy of the response so i can be read in the run() method.
friendData = response;
Log.v("friendData--", ""+friendData);
//Create method to run on UI thread
MainActivity.this.runOnUiThread(new Runnable() {
public void run() {
try {
//Parse JSON Data
JSONObject json;
json = Util.parseJson(friendData);
//Get the JSONArry from our response JSONObject
JSONArray friendArray = json.getJSONArray("data");
Log.v("friendArray--", ""+friendArray);
for(int i = 0; i< friendArray.length(); i++)
{
JSONObject frnd_obj = friendArray.getJSONObject(i);
friends_list.add(frnd_obj.getString("name")+"~~~"+frnd_obj.getString("id"));
}
Intent ide = new Intent(MainActivity.this,Next.class);
ide.putStringArrayListExtra("friends", friends_list);
ide.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(ide);
// ArrayAdapter<String> adapter = new ArrayAdapter<String>(getBaseContext(), android.R.layout.simple_list_item_1,android.R.id.text1, friends_list);
// lv.setAdapter(adapter);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (FacebookError e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
@Override
public void onIOException(IOException e, Object state) {
// TODO Auto-generated method stub
}
@Override
public void onFileNotFoundException(FileNotFoundException e,
Object state) {
// TODO Auto-generated method stub
}
@Override
public void onMalformedURLException(MalformedURLException e,
Object state) {
// TODO Auto-generated method stub
}
@Override
public void onFacebookError(FacebookError e, Object state) {
// TODO Auto-generated method stub
}
}
}
Next.java
import java.util.ArrayList;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class Next extends Activity{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
setContentView(R.layout.list);
Intent i = getIntent();
ArrayList<String> friends_data = i.getStringArrayListExtra("friends");
ListView lv = (ListView) findViewById(R.id.list);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getBaseContext(), android.R.layout.simple_list_item_1,android.R.id.text1, friends_data);
lv.setAdapter(adapter);
}
}