如何使用FB FriendPickerFragment显示你的所有朋友列表,以邀请他们使用你的应用程序



EDIT-----:所以我确实设法使它向我显示用户,并能够选择一些,并将我送回选定的用户到我的应用程序,但有一个轻微的问题。"Uri.parse("picker://friend");"不会给我我的朋友列表,而只给我一个我拥有的并且安装了我的应用程序的朋友列表。

我遵循这个例子:https://developers.facebook.com/docs/android/scrumptious/show-friends但我试图修改它,所以基本上我拿出了selectionActivity和Fragment。我从我的活动中有一个按钮它调用PickerActivity它包含FriendPickerFragment。我可以选择我的朋友从那里,但回到我的活动onActivityResult我得到返回"数据"为空。

我有一个应用程序类在我的应用程序,在那里我保存FB会话,也有登录功能在那里。

在我的MainActivity onCreate我有这个:

   MyApp.getInstance().facebookLogin(PSAddFriendsActivity.this, new CrudStateCallback() {
        @Override
        public void onResponse(final String string) {
            Log.i("", "session : session is opened? : " + MyApp.getInstance().fbSession.getAccessToken());               
        }
    });

登录后,我实例化了我在应用程序中拥有的当前好友列表,该列表的第一个位置是FB按钮:

@Override
protected void onListItemClick(ListView l, View v, int position, long id){
    super.onListItemClick(l, v, position, id);
    if(position == 0){
            startPickerActivity(PSPickerActivity.FRIEND_PICKER, 0);
    }else if(position ==1){
        //TODO: OPEN CONTACTS PAGE TO ADD FRIENDS        
    }
}

这是我的onACtivityResult和"startPickerActivity"从这个类:

 @Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data);
    Log.i("","--------------data is : " + data);
    Log.i("","--------------resultCode is : " + resultCode);
    Log.i("","--------------requestCode is : " + requestCode);
}
public void startPickerActivity(Uri data, int requestCode) {
    Intent intent = new Intent();
    intent.setData(data);
    intent.setClass(PSAddFriendsActivity.this, PickerActivity.class);
    startActivityForResult(intent, requestCode);
}

这是PickerActivity,我是如何把它从FB:

public class PickerActivity extends FragmentActivity{
private FriendPickerFragment friendPickerFragment;
public static final Uri FRIEND_PICKER = Uri.parse("picker://friend");
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.pickers);
    Bundle args = getIntent().getExtras();
    FragmentManager manager = getSupportFragmentManager();
    Fragment fragmentToShow = null;
    Uri intentUri = getIntent().getData();
    if (FRIEND_PICKER.equals(intentUri)) {
        if (savedInstanceState == null) {
            friendPickerFragment = new FriendPickerFragment(args);
        } else {
            friendPickerFragment =
                    (FriendPickerFragment) manager.findFragmentById(R.id.picker_fragment);
        }
        // Set the listener to handle errors
        friendPickerFragment.setOnErrorListener(new PickerFragment.OnErrorListener() {
            @Override
            public void onError(PickerFragment<?> fragment,
                                FacebookException error) {
                PSPickerActivity.this.onError(error);
            }
        });
        // Set the listener to handle button clicks
        friendPickerFragment.setOnDoneButtonClickedListener(
                new PickerFragment.OnDoneButtonClickedListener() {
                    @Override
                    public void onDoneButtonClicked(PickerFragment<?> fragment) {
                        finishActivity();
                    }
                });
        fragmentToShow = friendPickerFragment;
    } else {
        // Nothing to do, finish
        setResult(RESULT_CANCELED);
        finish();
        return;
    }
    manager.beginTransaction()
            .replace(R.id.picker_fragment, fragmentToShow)
            .commit();
}
private void onError(Exception error) {
    onError(error.getLocalizedMessage(), false);
}
private void onError(String error, final boolean finishActivity) {
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle(R.string.error_dialog_title).
            setMessage(error).
            setPositiveButton(R.string.error_dialog_button_text,
                    new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialogInterface, int i) {
                            if (finishActivity) {
                                finishActivity();
                            }
                        }
                    });
    builder.show();
}
private void finishActivity() {
    setResult(RESULT_OK, null);
    finish();
}
@Override
protected void onStart() {
    super.onStart();
    if (FRIEND_PICKER.equals(getIntent().getData())) {
        try {
            friendPickerFragment.loadData(false);
        } catch (Exception ex) {
            onError(ex);
        }
    }
}
@Override
protected void onResume() {
    Log.i("", "location test onResume");
    super.onResume();
    MyApp.getInstance().pref.setIsBackground(this, false);
    MyApp.getInstance().startLocationClient();
}
@Override
protected void onPause() {
    Log.i("", "location test onPause");
    super.onPause();
    MyApp.getInstance().pref.setIsBackground(this, true);
}
}

现在我看了看这个片段,不知道我是否要添加一些东西或保存一些东西从片段"onDoneButtonClicked"?或者确切地说,因为我的主活动返回null作为数据..

忘记在finishactivity:

if (FRIEND_PICKER.equals(getIntent().getData())) {
        if (friendPickerFragment != null) {
            MyApp.getInstance().setSelectedUsers(friendPickerFragment.getSelection());
        }
    }

现在我可以从我的应用程序中获得所选用户的列表。

关于我的编辑,在这之后我发现Graph2.0你不能得到你的所有朋友列表。你只能获得同样喜欢该应用的好友的信息。你可以邀请好友喜欢该应用,但前提是你必须在facebook开发者页面将其设置为游戏

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