我正在尝试制作一个聊天应用程序。我有一个SlidingDrawer活动，它有很多片段，其中ChatFragment是一个片段。现在当我向朋友发送消息时，我有一个Chatting Window，如果有消息来自GCM服务，我在ChatFragment中，然后此消息将转到该片段并更新列表视图，因为我想在聊天时收到任何消息时更新chatWindow现在，我尝试执行以下操作。
GcmIntentService：
public class GcmIntentService extends IntentService {
public GcmIntentService() {
super("GcmIntentService");
}
@Override
protected void onHandleIntent(Intent intent) {
Bundle extras = intent.getExtras();
GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);
// The getMessageType() intent parameter must be the intent you received
// in your BroadcastReceiver.
String messageType = gcm.getMessageType(intent);
if (extras != null && !extras.isEmpty()) { // has effect of unparcelling Bundle
// Since we're not using two way messaging, this is all we really to check for
if (GoogleCloudMessaging.MESSAGE_TYPE_MESSAGE.equals(messageType)) {
Logger.getLogger("GCM_RECEIVED").log(Level.INFO, extras.toString());
showToast(extras.getString("message"));
Intent sendData = new Intent("chatupdater");
sendData.putExtra("msg", extras.getString("message"));
LocalBroadcastManager.getInstance(this).sendBroadcast(sendData);
Log.i("chat","i am in GCMIntentService");
}
}
GcmBroadcastReceiver.completeWakefulIntent(intent);
}
在这里，我正在onHandleIntent（）中启动广播接收器。
ChatBroadCastReceiver：
public class ChatBroadCastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Log.i("chat","I am in ChatBroadCastReceiver");
String msg = intent.getStringExtra("msg");
Log.i("chat",msg);
//Intent data = new Intent("chatupdater");
//Intent data = new Intent("chatupdater");
//data.putExtra("key","data");
//data.putInt("fragmentno",1); // Pass the unique id of fragment we talked abt earlier
//context.sendBroadcast(intent);
}
}
这是我的
ChatBroadCastReceiver类，如果有任何消息成功通过onReceive()方法接收，现在我想将此消息发送到Fragment。我尝试了一下，我向Fragment注册了Fragment并尝试获取相同的数据在onReceive()的ChatFragment处。但是它没有调用。我试图通过登录查看。public class ChatFragment extends Fragment {
//ChatBroadCastReceiver mReceiver;
private EditText et_chat;
Bundle mailData;
String caller_mail;
private ListView chatListview;
private ChatWindowAdapter chatWindowAdapter;
private List<ChatSession>PreviousChatSession;
private List<ChatInfo> chatListItems;
Button chat_send;
public ChatFragment() {
}
public BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
Log.i("chat","I am in BroadCastReceiver");
String msg = intent.getStringExtra("msg");
Toast.makeText(getActivity(),msg,Toast.LENGTH_LONG).show();
}
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mReceiver = new ChatBroadCastReceiver();
//getActivity().registerReceiver(new ChatBroadCastReceiver(),new IntentFilter("chatupdater"));
LocalBroadcastManager.getInstance(getActivity()).registerReceiver(new ChatBroadCastReceiver(),new IntentFilter("chatupdater"));
Log.i("chat", "I am in onCreate");
}
现在如何将我在Broadcastreceiver中收到的消息发送到ChatFragment的onReceive（）？
最佳答案
注册广播您正在使用：
mReceiver = new ChatBroadCastReceiver();
LocalBroadcastManager.getInstance(getActivity()).registerReceiver(mReceiver ,new IntentFilter("chatupdater"));
因此，您将仅在
ChatBroadCastReceiver类上接收广播。因为mReceiver是ChatBroadCastReceiver类的实例。现在要在
ChatFragment中创建的匿名类上接收广播消息，您需要像下面的代码一样进行注册。其中mReceiver是您在ChatFragment类中实现的匿名BroadcastReceiver类的实例。LocalBroadcastManager.getInstance(getActivity()).registerReceiver(mReceiver ,new IntentFilter("chatupdater"))
要在ChatFragment和ChatBroadCastReceiver上接收广播消息，您需要两次注册广播接收器。
LocalBroadcastManager.getInstance(getActivity()).registerReceiver(mReceiver ,new IntentFilter("chatupdater"))
ChatBroadCastReceiver mChatBroadCastReceiver = new ChatBroadCastReceiver();
LocalBroadcastManager.getInstance(getActivity()).registerReceiver(mChatBroadCastReceiver ,new IntentFilter("chatupdater"))
希望这个答案能帮助您理解您的问题。