环信3.0 监听不到好友申请， 怎么解决啊。急急急！

EMClient.getInstance().contactManager().setContactListener(new MyContactListener());

public class MyContactListener implements EMContactListener {

        @Override

        public void onContactAdded(String username) {

            Log.e("onContactAdded", "onContactAdded: " + username);

            new Thread(new Runnable() {

                @Override

                public void run() {

                    contactListFragment.setContactsMap(getContacts());

                    contactListFragment.refresh();

                }

            }).start();



        }

        @Override

        public void onContactDeleted(final String username) {

            runOnUiThread(new Runnable() {

                public void run() {

                    if (ChatActivity.activityInstance != null && ChatActivity.activityInstance.toChatUsername != null &&

                            username.equals(ChatActivity.activityInstance.toChatUsername)) {

                        String st10 = getResources().getString(R.string.have_you_removed);

                        Toast.makeText(MainActivity.this, ChatActivity.activityInstance.getToChatUsername() + st10, Toast.LENGTH_LONG)

                                .show();

                        ChatActivity.activityInstance.finish();

                    }

                }

            });

        }

        @Override

        public void onContactInvited(final String username, String reason) {

            Log.e("onContactInvited", "onContactInvited: " + username);

            runOnUiThread(new Runnable(){

                @Override

                public void run() {

                    Toast.makeText(getApplicationContext(), "收到好友申请：+"+username, Toast.LENGTH_SHORT).show();

                }

            });

        }

        @Override

        public void onFriendRequestAccepted(final String username) {

            runOnUiThread(new Runnable(){

                @Override

                public void run() {

                    Toast.makeText(getApplicationContext(), "好友申请同意：+"+username, Toast.LENGTH_SHORT).show();

                }

            });

        }

        @Override

        public void onFriendRequestDeclined(String username) {

            Log.d(username, username + "拒绝了你的好友请求");

        }

    }