我使用Notification.contentView
复制通知视图:
View notificationView = notification.contentView.apply(context, parent);
不幸的是,从版本N开始,Notification.contentView
可能为空且已弃用,那么如何手动创建Notification.contentView
?
通常,我以这种方式创建通知:
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID);
builder.setAutoCancel(true)
.setColor(ContextCompat.getColor(this, R.color.colorAccent))
.setContentTitle(title)
.setContentText(text)
.setDefaults(Notification.DEFAULT_ALL)
.setWhen(when)
.setSmallIcon(smallIcon);
然后,如果我手动创建contentView,该如何映射上述所有设置?
重要说明:我不调用setCustomContentView,而是要为标准通知重现contentView。
答案 0 :(得分:2)
YES
在android N 中,该字段可能是null
通知视图由Notification.Builder;
的输入确定,自定义RemoteViews
可以选择与Notification.Builder.setCustomContentView(RemoteViews)
一起提供
示例代码
NotificationManager mNotificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
String NOTIFICATION_CHANNEL_ID = "Nilesh_channel";
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, "Your Notifications",
NotificationManager.IMPORTANCE_HIGH);
notificationChannel.setDescription("");
notificationChannel.enableLights(true);
notificationChannel.enableVibration(true);
mNotificationManager.createNotificationChannel(notificationChannel);
}
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID);
RemoteViews notificationView = new RemoteViews(getPackageName(), R.layout.custom_layout);
notificationBuilder.setAutoCancel(true)
.setColor(ContextCompat.getColor(this, R.color.colorAccent))
.setContentTitle(getString(R.string.app_name))
.setContentText("")
.setDefaults(Notification.DEFAULT_ALL)
.setWhen(System.currentTimeMillis())
.setSmallIcon(R.drawable.ic_launcher_background)
.setCustomContentView(notificationView) // set here your RemoteViews
.setAutoCancel(true);
输出
答案 1 :(得分:1)
回答我自己的问题:
通过contentView
创建Notification.Builder
:
builder.createContentView();
通过contentView
创建Notification
:
Notification.Builder.recoverBuilder(context, notification).createContentView();
由于Notification.Builder.createContentView()
是在api级别24中引入的,因此上述代码只能从Nougat 7.0或更高版本的设备中调用;对于较低版本的手机,直接引用非null的Notification.contentView始终是安全的,它是在调用builder.build()之后由android系统自动创建的。