您如何更改通知操作按钮的图标？

Question

[当您使用.addAction（int图标，CharSequence标题，PendingIntent intent）构建通知并添加操作按钮时，是否有办法在按下时更改图标？

Answer 1

要实时更改操作图标，您需要设置具有相同标题和新图标的新操作，然后重新启动通知。例如：

notificationBuilder.actions[1] = new Notification.Action(R.drawable.pause, "play", pendingIntent);
startForeground(101, notificationBuilder);

或

notificationBuilder.actions[1] = new Notification.Action(R.drawable.pause, "play", pendingIntent);
((NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE)).notify(101, notificationBuilder);

Answer 2

您需要创建一个如下所示的drawable，并将其提供给addAction

button.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:drawable="@drawable/actionbarcontacts_on" android:state_pressed="true"/>
  <item android:drawable="@drawable/actionbarcontacts_on" android:state_focused="true"/>
  <item android:drawable="@drawable/actionbarcontacts_off"/>
</selector>

addAction(R.drawable.button, <title>, <intent>);