Youra's questions

我正在尝试从 Firebase 控制台发送推送消息，但没有任何消息发送成功。

有这样一段代码：

package dem.corp.androidmessenger;

import static androidx.fragment.app.FragmentManager.TAG;

import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;

import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.messaging.FirebaseMessaging;

import java.util.HashMap;
import java.util.Map;

import dem.corp.androidmessenger.bottomnav.chats.ChatsFragment;
import dem.corp.androidmessenger.bottomnav.new_chat.NewChatFragment;
import dem.corp.androidmessenger.bottomnav.profile.ProfileFragment;
import dem.corp.androidmessenger.databinding.ActivityMainBinding;

public class MainActivity extends AppCompatActivity {

    private ActivityMainBinding binding;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        binding = ActivityMainBinding.inflate(getLayoutInflater());
        setContentView(binding.getRoot());

//fcm
        FirebaseMessaging.getInstance().getToken()
                .addOnCompleteListener(new OnCompleteListener<String>() {
                    @Override
                    public void onComplete(@NonNull Task<String> task) {
                        if (!task.isSuccessful()) {
                            Log.w(TAG, "Fetching FCM registration token failed", task.getException());
                            return;
                        }
                        // Get new FCM registration token
                        String token = task.getResult();
                        // Log and toast
                        //String msg = getString(R.string.msg_token_fmt, token);
                        Log.d(TAG, "222 token = " + token);
                        Toast.makeText(MainActivity.this, token, Toast.LENGTH_SHORT).show();
                    }
                });  //END FCM


        if (FirebaseAuth.getInstance().getCurrentUser()==null){
            startActivity(new Intent(MainActivity.this, LoginActivity.class));
        }

        getSupportFragmentManager().beginTransaction().replace(binding.fragmentContainer.getId(), new ChatsFragment()).commit();
        binding.bottomNav.setSelectedItemId(R.id.chats);

        Map<Integer, Fragment> fragmentMap = new HashMap<>();
        fragmentMap.put(R.id.chats, new ChatsFragment());
        fragmentMap.put(R.id.new_chat, new NewChatFragment());
        fragmentMap.put(R.id.profile, new ProfileFragment());

        binding.bottomNav.setOnItemSelectedListener(item -> {
            Fragment fragment = fragmentMap.get(item.getItemId());

            getSupportFragmentManager().beginTransaction().replace(binding.fragmentContainer.getId(), fragment).commit();

            return true;
        });
    }
}

从此代码中我获得一个令牌并将该令牌输入到 Firebase 控制台。

我没有在清单中配置任何东西。告诉我，为什么我收不到来自 FCM 的消息？

在 LogCat 中它说：

  ndroidmessenger         dem.corp.androidmessenger            W  Accessing hidden method Landroid/os/WorkSource;->add(I)Z (unsupported,test-api, reflection, allowed)
2025-02-01 12:53:26.688  6595-6820  ndroidmessenger         dem.corp.androidmessenger            W  Accessing hidden method Landroid/os/WorkSource;->add(ILjava/lang/String;)Z (unsupported,test-api, reflection, allowed)
2025-02-01 12:53:26.688  6595-6820  ndroidmessenger         dem.corp.androidmessenger            W  Accessing hidden method Landroid/os/WorkSource;->get(I)I (unsupported, reflection, allowed)
2025-02-01 12:53:26.688  6595-6820  ndroidmessenger         dem.corp.androidmessenger            W  Accessing hidden method Landroid/os/WorkSource;->getName(I)Ljava/lang/String; (unsupported, reflection, allowed)
2025-02-01 12:53:26.718  6595-6824  FirebaseMessaging       dem.corp.androidmessenger            W  Missing Default Notification Channel metadata in AndroidManifest. Default value will be used.
2025-02-01 12:53:26.727  6595-6824  Compatibil...geReporter dem.corp.androidmessenger            D  Compat change id reported: 160794467; UID 10192; state: ENABLED

并且文件显示如下内容： Android Stdio 建议我使用管理器更改文件：我选中了所有框，但文件没有任何更改：

同时，我在宣言中补充了以下数据：

  <meta-data
        android:name="default_notification_channel_id"
        android:value="@string/default_notification_channel_id" />
    <meta-data
        android:name="com.google.firebase.messaging.default_notification_channel_id"
        android:value="high_importance_channel" />

救命，为什么我收不到 fcm 消息？

你能帮忙吗？在拆分（用逗号将字符串分成数组）时，会出现一些错误信息。以下是我尝试拆分成数组的变量 chatsStr 的内容：

chatsStr-ODqP1-1G1AtcwnrDVLk, ZqnkGaeyk3UkRLRJH8Qh1tQiF7d2

日志中显示的内容如下：

chatsIds[Ljava.lang.String;@86a42f3

激活码如下：

package dem.corp.androidmessenger.bottomnav.chats;

import static androidx.fragment.app.FragmentManager.TAG;

import androidx.fragment.app.Fragment;

import android.annotation.SuppressLint;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.recyclerview.widget.LinearLayoutManager;

import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Objects;

import dem.corp.androidmessenger.chats.Chat;
import dem.corp.androidmessenger.chats.ChatsAdapter;
import dem.corp.androidmessenger.databinding.FragmentChatsBinding;
import dem.corp.androidmessenger.utils.ChatUtil;

public class ChatsFragment extends Fragment {
    private FragmentChatsBinding binding;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        binding = FragmentChatsBinding.inflate(inflater, container, false);

        loadChats();

        return binding.getRoot();
    }

    @SuppressLint("RestrictedApi")
    private void loadChats(){

        Log.w(TAG, "Error getting documents. 222");
        ArrayList<Chat> chats = new ArrayList<>();

        String uid = Objects.requireNonNull(FirebaseAuth.getInstance().getCurrentUser()).getUid();
        Log.w(TAG, "Error getting documents. 222 uid =" + uid);
        FirebaseDatabase.getInstance().getReference().addListenerForSingleValueEvent(new ValueEventListener() {
            @SuppressLint("RestrictedApi")
            @Override
            public void onDataChange(@NonNull DataSnapshot snapshot) {
                String chatsStr = Objects.requireNonNull(snapshot.child("Users").child("ZqnkGaeyk3UkRLRJH8Qh1tQiF7d2").child("chats").getValue()).toString();
                Log.w(TAG, "Error getting documents. 2222 chatsStr" + chatsStr);

                String[] chatsIds = chatsStr.split(",");
                Log.w(TAG, "Error getting documents. 2222 chatsIds" + chatsIds);

                //ChatUtil.createChat("ZqnkGaeyk3UkRLRJH8Qh1tQiF7d2");
               // FirebaseDatabase.getInstance().getReference().child("Users").child("mdlfnx5Bo4dbpKOjwmUxaiyJzAY2")
                 //       .child("chats").setValue(chatsUpd);
                String uid = Objects.requireNonNull(FirebaseAuth.getInstance().getCurrentUser()).getUid();
                Log.w(TAG, "Error getting documents. 2222 chats uid=" + uid);
                HashMap<String, String> chatInfo = new HashMap<>();
                chatInfo.put("user1", uid);
                chatInfo.put("user2", "1Sx2FCTKDcdfjhztPtTbWgSxFZP2");

                String chatCurrentId = "ZqnkGaeyk3UkRLRJH8Qh1tQiF7d2";
               // String chatId = generateChatId(uid, user.uid);
                FirebaseDatabase.getInstance().getReference().child("Chats").child(chatCurrentId)
                        .setValue(chatInfo);

                if (chatsIds.length==0) return;

                for (String chatId : chatsIds){
                   // DataSnapshot chatSnapshot = snapshot.child("Chats").child(chatId);
                    DataSnapshot chatSnapshot = snapshot.child("Chats").child("ZqnkGaeyk3UkRLRJH8Qh1tQiF7d2");
                    String userId1 = Objects.requireNonNull(chatSnapshot.child("user1").getValue()).toString();
                    Log.w(TAG, "Error getting documents. 2222 userId1=" + userId1);
                    String userId2 = Objects.requireNonNull(chatSnapshot.child("user2").getValue()).toString();
                    Log.w(TAG, "Error getting documents. 2222 userId2=" + userId2);


                    String chatUserId = (uid.equals(userId1)) ? userId2 : userId1;
                    Log.w(TAG, "Error getting documents. 2222 chatUserId=" + chatUserId);
                    String chatName = Objects.requireNonNull(snapshot.child("Users").child(chatUserId).child("username").getValue()).toString();

                    Chat chat = new Chat(chatId, chatName, userId1, userId2);
                    chats.add(chat);
                }

                binding.chatsRv.setLayoutManager(new LinearLayoutManager(getContext()));
                binding.chatsRv.setAdapter(new ChatsAdapter(chats));
            }

            @Override
            public void onCancelled(@NonNull DatabaseError error) {
                Toast.makeText(getContext(), "Failed to get user chats", Toast.LENGTH_SHORT).show();
            }
        });
    }
}

告诉我，发生什么事了？