Android开发求助：BroadcastReceiver无法接收SMS消息

我正在开发一款需要检测SMS消息的应用，查阅了大量网络示例但仍未找到解决办法，恳请各位指点我可能存在的错误之处。

SMSReadReceiver.java #

public class SMSReadReceiver extends BroadcastReceiver {
    private static final String TAG = SMSReadReceiver.class.getSimpleName();


    @Override
    public void onReceive(Context context, Intent intent) {
        if (Telephony.Sms.Intents.SMS_RECEIVED_ACTION.equals(intent.getAction())) {
            Bundle bundle = intent.getExtras();
            if (bundle != null) {
                Object[] pdus = (Object[]) bundle.get("pdus");
                if (pdus != null) {
                    String format = bundle.getString("format");
                    String senderNumber = "***********";
                    for (Object o : pdus) {
                        SmsMessage sms = SmsMessage.createFromPdu((byte[]) o, format);
                        senderNumber = sms.getOriginatingAddress();
                        String message = sms.getDisplayMessageBody();
                        Log.i(TAG, "SMS Message " + senderNumber + ", " + message);
                    }
                    SmsManager smsManager = SmsManager.getDefault();
                    smsManager.sendTextMessage("+18888888888", null, "We received", null, null);
                }
            }
        }
    }
}

MainActivity.java #

public class MainActivity extends AppCompatActivity {

    private static final int REQUEST_SEND_SMS = 777;
    private ActivityMainBinding binding;
    private EditText etMessage, etPhone;
    private Button btnGo;
    String SENT = "SMS_SENT";
    String DELIVERED = "SMS_DELIVERED";
    PendingIntent sentPI, deliveredPI;
    BroadcastReceiver smsSentReceiver, smsDeliveredReceiver;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        binding = ActivityMainBinding.inflate(getLayoutInflater());
        setContentView(binding.getRoot());
        if(ContextCompat.checkSelfPermission(this,Manifest.permission.SEND_SMS)!= PackageManager.PERMISSION_GRANTED){
            Toast.makeText(MainActivity.this,"no permission for Send SMS",Toast.LENGTH_SHORT).show();
            ActivityCompat.requestPermissions(MainActivity.this,new String[]{Manifest.permission.SEND_SMS},PackageManager.PERMISSION_GRANTED);
        }
        if(ContextCompat.checkSelfPermission(this,Manifest.permission.READ_SMS)!=PackageManager.PERMISSION_GRANTED){
            Toast.makeText(MainActivity.this,"no permission for read",Toast.LENGTH_SHORT).show();
            ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.READ_SMS}, PackageManager.PERMISSION_GRANTED);
        }
        if(ContextCompat.checkSelfPermission(this, Manifest.permission.RECEIVE_SMS)!=PackageManager.PERMISSION_GRANTED){
            Toast.makeText(MainActivity.this,"no permission for receive",Toast.LENGTH_SHORT).show();
            ActivityCompat.requestPermissions(MainActivity.this,new String[]{Manifest.permission.RECEIVE_SMS},PackageManager.PERMISSION_GRANTED);
        }
        etMessage = binding.etMessage;
        etPhone = binding.etPhoneNumber;
        btnGo = binding.btGo;
        btnGo.setOnClickListener(v -> {
            String message = etMessage.getText().toString();
            String telno = etPhone.getText().toString();
            sentPI = PendingIntent.getBroadcast(MainActivity.this, 0, new Intent(SENT), PendingIntent.FLAG_IMMUTABLE);
            deliveredPI = PendingIntent.getBroadcast(MainActivity.this, 0, new Intent(DELIVERED), PendingIntent.FLAG_IMMUTABLE);
            if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.SEND_SMS) != PackageManager.PERMISSION_GRANTED) {
                ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.SEND_SMS}, REQUEST_SEND_SMS);
            } else {
                SmsManager sms = SmsManager.getDefault();
                sms.sendTextMessage(telno, null, message, sentPI, deliveredPI);
            }
        });
    }

    @RequiresApi(api = Build.VERSION_CODES.TIRAMISU)
    @Override
    protected void onResume() {
        super.onResume();
        smsSentReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                switch (getResultCode()) {
                    case Activity.RESULT_OK:
                        Toast.makeText(MainActivity.this, "SMS Sent", Toast.LENGTH_SHORT).show();
                        break;
                    case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                        Toast.makeText(MainActivity.this, "Generic Failure", Toast.LENGTH_SHORT).show();
                        break;
                    case SmsManager.RESULT_ERROR_NO_SERVICE:
                        Toast.makeText(MainActivity.this, "No Service", Toast.LENGTH_SHORT).show();
                        break;
                    case SmsManager.RESULT_ERROR_NULL_PDU:
                        Toast.makeText(MainActivity.this, "Null PDU", Toast.LENGTH_SHORT).show();
                        break;
                    case SmsManager.RESULT_ERROR_RADIO_OFF:
                        Toast.makeText(MainActivity.this, "Radio Off", Toast.LENGTH_SHORT).show();
                        break;
                }
            }
        };
        smsDeliveredReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                switch (getResultCode()) {
                    case Activity.RESULT_OK:
                        Toast.makeText(MainActivity.this, "SMS Delivered", Toast.LENGTH_SHORT).show();
                        break;
                    case Activity.RESULT_CANCELED:
                        Toast.makeText(MainActivity.this, "SMS Not Delivered", Toast.LENGTH_SHORT).show();
                        break;
                }
            }
        };
        registerReceiver(smsSentReceiver, new IntentFilter(SENT), Context.RECEIVER_NOT_EXPORTED);
        registerReceiver(smsDeliveredReceiver, new IntentFilter(DELIVERED), Context.RECEIVER_NOT_EXPORTED);
    }

    @Override
    protected void onPause() {
        super.onPause();
        unregisterReceiver(smsDeliveredReceiver);
        unregisterReceiver(smsSentReceiver);
    }
}

Manifest.xml #

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <uses-permission android:name="android.permission.READ_SMS" />
    <uses-permission android:name="android.permission.RECEIVE_SMS" />
    <uses-permission android:name="android.permission.SEND_SMS" />


    <uses-feature
        android:name="android.hardware.telephony"
        android:required="true" />

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.MeetInMiddle">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver
            android:name=".receivers.SMSReceiver"
            android:enabled="true"
            android:exported="true"
            android:permission="android.permission.BROADCAST_SMS">

        </receiver>
     
    </application>

</manifest>

• 广播接收器类名/路径不匹配：Manifest中注册的是.receivers.SMSReceiver，但实际代码中的接收器类是SMSReadReceiver。如果SMSReadReceiver不在receivers子包下，直接修改android:name为.SMSReadReceiver；如果在子包下，改为.receivers.SMSReadReceiver。
• 缺少短信广播的Intent Filter：Manifest里的<receiver>标签没有添加接收短信的意图过滤器，系统无法将SMS_RECEIVED广播传递给你的接收器。需要在<receiver>内部添加：

  <intent-filter>
      <action android:name="android.provider.Telephony.SMS_RECEIVED" />
  </intent-filter>
  

• 权限请求码错误：MainActivity中请求权限时，requestPermissions的第三个参数应该是自定义的请求码（比如单独定义REQUEST_READ_SMS、REQUEST_RECEIVE_SMS），而不是PackageManager.PERMISSION_GRANTED。这个参数用于在权限回调中区分不同的请求，错误的请求码会导致无法正确处理权限授予结果。
• Android 13+通知权限：Android 13（API 33）及以上版本，需要额外申请POST_NOTIFICATIONS权限才能显示Toast通知，否则通知可能无法正常弹出。

内容的提问来源于stack exchange，提问作者Brian Green