如何在Android Studio的手机上显示通知？

// 创建通知渠道
String channelId = "my_channel_id";
CharSequence channelName = "My Channel";
int importance = NotificationManager.IMPORTANCE_DEFAULT;
NotificationChannel channel = new NotificationChannel(channelId, channelName, importance);

// 设置通知渠道的描述和其他属性
channel.setDescription("My Channel Description");
// ...

// 在NotificationManager中注册通知渠道
NotificationManager notificationManager = getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel);

// 创建通知的内容和样式
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, channelId)
        .setSmallIcon(R.drawable.notification_icon)
        .setContentTitle("My Notification")
        .setContentText("This is a notification from my app")
        .setPriority(NotificationCompat.PRIORITY_DEFAULT);

// 显示通知
int notificationId = 1;
notificationManager.notify(notificationId, builder.build());