Android 8.0(<API 26)

// 創(chuàng)建通知(標(biāo)題、內(nèi)容、圖標(biāo))
Notification notification = new Notification.Builder(this)
        .setContentTitle("通知標(biāo)題")
        .setContentText("通知內(nèi)容")
        .setSmallIcon(R.mipmap.ic_launcher)
        .build();
// 創(chuàng)建通知管理器
NotificationManager manager = (NotificationManager) context
        .getSystemService(Context.NOTIFICATION_SERVICE);
// 發(fā)送通知
manager.notify(1, notification);

Android 8.0(≥API 26)

Build.VERSION.SDK_INT >= Build.VERSION_CODES.O
// 1. 創(chuàng)建一個(gè)通知(必須設(shè)置channelId)
Context context = getApplicationContext();
String channelId = "ChannelId"; // 通知渠道
Notification notification = new Notification.Builder(context)
        .setChannelId(channelId) 
        .setSmallIcon(R.mipmap.icon_bill_64x64)
        .setContentTitle("通知標(biāo)題")
        .setContentText("通知內(nèi)容")
        .build();
// 2. 獲取系統(tǒng)的通知管理器(必須設(shè)置channelId)
NotificationManager notificationManager = (NotificationManager) context
        .getSystemService(NOTIFICATION_SERVICE);
NotificationChannel channel = new NotificationChannel(
        channelId,
        "通知的渠道名稱",
        NotificationManager.IMPORTANCE_DEFAULT);
notificationManager.createNotificationChannel(channel);
// 3. 發(fā)送通知(Notification與NotificationManager的channelId必須對(duì)應(yīng))
notificationManager.notify(id, notification);

PendingIntent

// 注意：PendingIntent.FLAG_UPDATE_CURRENT
Intent intent = new Intent(context, MainActivity.class); 
intent.putExtra(name, value);
PendingIntent pendingIntent = PendingIntent.getActivity(
        context, REQUEST_CODE, intent, PendingIntent.FLAG_UPDATE_CURRENT);
Notification notification = new Notification.Builder(this)
        .setContentTitle(title)
        .setContentText(text)
        .setSmallIcon(icon)
        .setContentIntent(pendingIntent)
        .build();