Notification 介紹見：https://developer.android.com/reference/android/app/Notification.html
Android api 一直對通知欄進行升級！ 包括7.0繼續改善快捷通知欄，接下來介紹下通知欄不同版本的兼容適配.
**Android JELLY_BEAN(16) 通知可以直接new Notification()**
Notification notification = new Notification();
notification.icon = android.R.drawable.stat_sys_download_done;
notification.flags |= Notification.FLAG_AUTO_CANCEL;
// 設置點擊事件的PendingIntent
notification.setLatestEventInfo(mContext, aInfo.mFilename, contentText, pendingIntent);
**Android .LOLLIPOP_MR1(22) 通知可以通過Notification.Builder（）**
Notification notification = new Notification.Builder(mContext)
.setAutoCancel(false)
.setContentIntent(pi)// 設置pendingIntent
.setSmallIcon(android.R.drawable.stat_sys_download_done)
.setWhen(System.currentTimeMillis())
.build();
**Android .LOLLIPOP_MR1(22)以上 也就從6.0開始 只能通過new NotificationCompat.Builder(mContext)**
Notification notification = new NotificationCompat.Builder(mContext)
.setContentTitle(aInfo.mFilename)
.setContentText(contentText)
.setSmallIcon(android.R.drawable.stat_sys_download_done)
.setContentIntent(pi)// 設置pendingIntent
.build();
**Android .O以上 也就從8.0開始 需要制定chanel屬性**
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
String CHANNEL_ID = "my_channel_01";
CharSequence name = "my_channel";
String Description = "This is my channel";
int importance = NotificationManager.IMPORTANCE_HIGH;
NotificationChannel mChannel = new NotificationChannel(CHANNEL_ID, name, importance);
mChannel.setDescription(Description);
mChannel.enableLights(true);
mChannel.setLightColor(Color.RED);
mChannel.enableVibration(true);
mChannel.setVibrationPattern(new long[]{100, 200, 300, 400, 500, 400, 300, 200, 400});
mChannel.setShowBadge(false);
notificationManager.createNotificationChannel(mChannel);
}
NotificationCompat.Builder builder = new NotificationCompat.Builder(ctx, CHANNEL_ID)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle(title)
.setContentText(message);