在Android8.0版本中，Notification较之前版本有所变化，主要是加入了NotificationChannel。
文章中主要举例：NormalStyle，BigTextStyle，BigPictureStyle，InputStyle，CustomViewStyle。
文中是部分代码，如果大家参考代码的话，请参见github代码：
NotificationDemo
下面请看代码：正常的通知样式。
@RequiresApi(api = Build.VERSION_CODES.O)
public void sendNotification(View view) {
String id = "channel_0";
String des = "111";
NotificationChannel channel = new NotificationChannel(id, des, NotificationManager.IMPORTANCE_MIN);
notificationManager.createNotificationChannel(channel);
Notification notification = new Notification.Builder(MainActivity.this, id)
.setContentTitle("Base Notification View")
.setContentText("您有一条新通知")
.setSmallIcon(R.drawable.jd_icon)
.setStyle(new Notification.MediaStyle())
.setAutoCancel(false)
.addExtras(new Bundle())
.build();
notificationManager.notify(1, notification);
}
创建大文本样式Notification.BigTextStyle：
@RequiresApi(api = Build.VERSION_CODES.O)
private void sendNotification_O() {
intent = new Intent(MainActivity.this, LoginActivity.class);
PendingIntent pintent = PendingIntent.getActivity(this, 0, intent, 0);
String id = "channel_1";
String description = "123";
NotificationChannel mChannel = new NotificationChannel(id, "123", NotificationManager.IMPORTANCE_HIGH);
mChannel.setDescription(description);
notificationManager.createNotificationChannel(mChannel);
Notification notification = new Notification.Builder(MainActivity.this, id).setContentTitle("Title")
.setSmallIcon(R.drawable.jd_icon)
.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.jingdong_icon))
.setContentTitle("您有一条新通知")
.setCategory(Notification.CATEGORY_MESSAGE)
.setContentText("这是一条逗你玩的消息")
.setStyle(new Notification.BigTextStyle()
.bigText(getString(R.string.dialog_message)))
.setAutoCancel(false)
.addExtras(new Bundle())
.setContentIntent(pintent)
.build();
notificationManager.notify(1, notification);
}
创建大图样式Notification.BigPictureStyle：
public void sendNotificationBigPic(View view) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
intent = new Intent(MainActivity.this, LoginActivity.class);
PendingIntent pintent = PendingIntent.getActivity(this, 0, intent, 0);
Icon icon = Icon.createWithResource(this, R.drawable.jd_icon);
Notification.Action action1 = new Notification.Action.Builder(icon, "Action1", pintent).build();
String cancelId = "channel_2";
NotificationChannel cannel = new NotificationChannel(cancelId, "456", NotificationManager.IMPORTANCE_MIN);
cannel.setDescription("456_des");
notificationManager.createNotificationChannel(cannel);
Notification notification = new Notification.Builder(this, cancelId)
.setSmallIcon(R.drawable.jd_icon)
.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.jingdong_icon))
.setContentTitle("您有一条新通知1")
.setCategory(Notification.CATEGORY_MESSAGE)
.setContentText("这是一条逗你玩的消息1")
.setStyle(new Notification.BigPictureStyle()
.bigPicture(BitmapFactory.decodeResource(getResources(), R.drawable.fm_ting_card)))
.setAutoCancel(false)
.setContentIntent(pintent)
.addAction(action1)
.build();
notificationManager.notify(2, notification);
}
}
创建快速回复输入框：
@RequiresApi(api = Build.VERSION_CODES.O)
public void sendNotificationInput(View view) {
// Key for the string that's delivered in the action's intent.
String KEY_TEXT_REPLY = "key_text_reply";
String replyLabel = getResources().getString(R.string.reply_label);
RemoteInput remoteInput = new RemoteInput.Builder(KEY_TEXT_REPLY)
.setLabel(replyLabel)
.build();
intent = new Intent(MainActivity.this, LoginActivity.class);
PendingIntent pintent = PendingIntent.getActivity(this, 0, intent, 0);
// Build a PendingIntent for the reply action to trigger.
PendingIntent replyPendingIntent =
PendingIntent.getActivity(getApplicationContext(),
100,
intent,
PendingIntent.FLAG_UPDATE_CURRENT);
// Create the reply action and add the remote input.
Notification.Action action =
new Notification.Action.Builder(R.drawable.jd_icon,
getString(R.string.label), replyPendingIntent)
.addRemoteInput(remoteInput)
.build();
// Build the notification and add the action.
Notification newMessageNotification = new Notification.Builder(this, CHANNEL_ID)
.setSmallIcon(R.drawable.jd_icon)
.setContentTitle(getString(R.string.title_activity_login))
.setContentText(getString(R.string.error_invalid_email))
.addAction(action)
.build();
// Issue the notification.
notificationManager.notify(3, newMessageNotification);
}
创建一个自定义样式：
public void sendNotificationCustomView(View view) {
// Get the layouts to use in the custom notification
RemoteViews notificationLayout = new RemoteViews(getPackageName(), R.layout.notification_small);
RemoteViews notificationLayoutExpanded = new RemoteViews(getPackageName(), R.layout.notification_large);
// Apply the layouts to the notification
Notification customNotification = new NotificationCompat.Builder(this, CHANNEL_ID)
.setSmallIcon(R.drawable.jd_icon)
//如果不显示icon和title，那么就把下面这句去掉
.setStyle(new NotificationCompat.DecoratedCustomViewStyle())
.setCustomContentView(notificationLayout)
.setCustomBigContentView(notificationLayoutExpanded)
.build();
notificationManager.notify(7, customNotification);
}
以上是部分代码，如果大家参考代码的话，请参见github代码：
