Android WorkManager多通知堆叠显示策略：解决通知覆盖问题

public final class NotificationHelper {
    private final String CHANNEL_ID = "reminder_channel_id";
    private final int NOTIFICATION_ID = 1; // 固定通知ID
    private final Context context;

    // ... 省略构造函数和创建通知渠道方法

    public void createNotification(@NotNull String title, @NotNull String message) {
        createNotificationChannel();
        // ... 省略Intent和PendingIntent的创建
        Notification notification = new NotificationCompat.Builder(context, CHANNEL_ID)
                // ... 省略其他设置
                .build();
        NotificationManagerCompat.from(context).notify(NOTIFICATION_ID, notification); // 每次都使用相同的NOTIFICATION_ID
    }
}

import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Build;

import androidx.core.app.NotificationCompat;
import androidx.core.app.NotificationManagerCompat;

import org.jetbrains.annotations.NotNull;

public final class NotificationHelper {
    private final String CHANNEL_ID = "reminder_channel_id";
    private final Context context;

    public NotificationHelper(@NotNull Context context) {
        this.context = context;
    }

    // 修改：增加 notificationId 参数
    public void createNotification(@NotNull String title, @NotNull String message, int notificationId) {
        createNotificationChannel();
        Intent intent = new Intent(context, AnimeActivity.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
        // PendingIntent 的 request code 也应是唯一的，或至少与通知ID相关联，以避免冲突
        PendingIntent pendingIntent = PendingIntent.getActivity(context, notificationId /* 使用通知ID作为request code */, intent, PendingIntent.FLAG_IMMUTABLE);

        Notification notification = new NotificationCompat.Builder(context, CHANNEL_ID)
                .setSmallIcon(R.drawable.xxx) // 替换为你的图标
                .setContentTitle(title)
                .setContentText(message)
                .setContentIntent(pendingIntent)
                .setPriority(NotificationCompat.PRIORITY_DEFAULT)
                .setAutoCancel(true) // 用户点击后自动清除通知
                .build();

        // 使用传入的唯一 notificationId
        NotificationManagerCompat.from(context).notify(notificationId, notification);
    }

    private final void createNotificationChannel() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { // Android 8.0 (API 26) 及以上
            NotificationChannel channel = new NotificationChannel(this.CHANNEL_ID, "提醒通知", NotificationManager.IMPORTANCE_DEFAULT);
            channel.setDescription("用于电影上映日期的提醒通知");
            NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
            if (notificationManager != null) {
                notificationManager.createNotificationChannel(channel);
            }
        }
    }

    @NotNull
    public final Context getContext() {
        return this.context;
    }
}

import android.content.Context;

import androidx.annotation.NonNull;
import androidx.work.Worker;
import androidx.work.WorkerParameters;

import org.jetbrains.annotations.NotNull;

public final class ReminderWorker extends Worker {
    @NotNull
    private final Context context;
    @NotNull
    private final WorkerParameters params;

    public ReminderWorker(@NotNull Context context, @NotNull WorkerParameters params) {
        super(context, params);
        this.context = context;
        this.params = params;
    }

    @NotNull
    @Override
    public Result doWork() {
        String title = this.getInputData().getString("title");
        String message = "test"; // 或者从 InputData 获取

        // 生成一个唯一的通知ID，例如使用当前时间戳
        int notificationId = (int) System.currentTimeMillis(); 

        // 或者，如果 WorkRequest 有一个唯一的ID，也可以尝试从中派生
        // int notificationId = this.getId().hashCode(); 

        new NotificationHelper(this.context).createNotification(title != null ? title : "提醒", message, notificationId);
        return Result.success();
    }

    @NotNull
    public final Context getContext() {
        return this.context;
    }

    @NotNull
    public final WorkerParameters getParams() {
        return this.params;
    }
}

import androidx.work.Data;
import androidx.work.OneTimeWorkRequest;
import androidx.work.WorkManager;

import java.util.concurrent.TimeUnit;

public class MainActivity extends AppCompatActivity {
    // ... 其他代码

    private void createWorkRequest(String message, long timeDelayInSeconds) {
        OneTimeWorkRequest temp = new OneTimeWorkRequest.Builder(ReminderWorker.class)
                .setInitialDelay(timeDelayInSeconds, TimeUnit.SECONDS)
                .setInputData(new Data.Builder()
                        .putString("title", message)
                        .build()
                )
                // 为每个WorkRequest设置一个唯一的标签，方便管理和取消
                .addTag("reminder_work_" + message.hashCode()) 
                .build();

        // WorkManager.enqueue() 默认会为每个 WorkRequest 分配一个唯一的 UUID
        WorkManager.getInstance(this).enqueue(temp);
    }
}