AndroidApp/RecordingService.java

package com.example.myapplication.Service;

import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.Service;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ServiceInfo;
import android.os.Build;
import android.os.IBinder;
import android.widget.Toast;

import androidx.annotation.RequiresApi;
import androidx.core.app.ActivityCompat;
import androidx.core.app.NotificationCompat;
import androidx.core.app.NotificationManagerCompat;

import com.example.myapplication.R;

public class RecordingService extends Service {
    private static final String CHANNEL_ID = "recording_channel";
    private static final int NOTIFICATION_ID = 1;

    @RequiresApi(api = Build.VERSION_CODES.R)
    @Override
    public void onCreate() {
        super.onCreate();
        try {
        createNotificationChannel();
        // 启动前台服务（必须5秒内调用startForeground）
        Notification notification = buildNotification("录音服务运行中");

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
                // Android 10+ 需要指定类型
                startForeground(NOTIFICATION_ID, notification,
                        ServiceInfo.FOREGROUND_SERVICE_TYPE_MICROPHONE);
            } else {
                // Android 8.0-9.0
                startForeground(NOTIFICATION_ID, notification);
            }
        } catch (Exception e) {
            Toast.makeText(this,"错误:"+e,Toast.LENGTH_LONG).show();
            stopSelf();
        }
    }


    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {

        return START_STICKY;
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    private void createNotificationChannel() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel(
                    "recording_channel",
                    "Recording Service",
                    NotificationManager.IMPORTANCE_LOW);
            NotificationManager manager = getSystemService(NotificationManager.class);
            if (manager != null) {
                manager.createNotificationChannel(channel);
            }
        }
    }

    private Notification buildNotification(String text) {
        // 确保图标有效（R.drawable.ic_mic_on必须存在）
        return new NotificationCompat.Builder(this, CHANNEL_ID)
                .setSmallIcon(R.drawable.ic_mic_on)
                .setContentTitle("录音服务")
                .setContentText(text)
                .setPriority(NotificationCompat.PRIORITY_LOW)
                .build();
    }

    public void updateNotification(String text) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
            if (ActivityCompat.checkSelfPermission(this,
                    android.Manifest.permission.POST_NOTIFICATIONS)
                    != PackageManager.PERMISSION_GRANTED) {
                // 无权限时不显示通知（避免崩溃）
                return;
            }
        }
        NotificationManagerCompat.from(this)
                .notify(NOTIFICATION_ID, buildNotification(text));
    }
}