java.lang.IllegalArgumentException：setShowActionsInCompactView：action 1 out of bounds（max 0）

Question

我正在为android中的无线电应用程序构建媒体样式通知。这是我的通知代码：

NotificationCompat.Action action = new android.support.v4.app.NotificationCompat.Action.Builder(imgNotificationAction, "playPause", pendingIntent).build();
    //create new notification
    NotificationCompat.Builder notificationBuilder = (NotificationCompat.Builder) new NotificationCompat.Builder(this)
            .setShowWhen(false)
            .setStyle(new NotificationCompat.MediaStyle()
                    .setMediaSession(mediaSession.getSessionToken())
                    .setShowActionsInCompactView(0, 1, 2))
            .setColor(ContextCompat.getColor(this, R.color.colorPrimary))
            //.setLargeIcon(largeIcon)
            .setSmallIcon(android.R.drawable.stat_sys_headset)
            .setContentText(radioName)
            .setContentTitle("Igala Radio presents")
            .setContentInfo("Igala language radio")
            .setContentIntent(pendingIntent)
            .addAction(action);

    NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.notify(NOTIFICATION_ID, notificationBuilder.build());

但我在Log cat中得到以下异常：

Caused by: java.lang.IllegalArgumentException: setShowActionsInCompactView: action 1 out of bounds (max 0)
                                                                 at android.app.Notification$MediaStyle.makeMediaContentView(Notification.java:4493)
                                                                 at android.app.Notification$MediaStyle.populateContentView(Notification.java:4427)
                                                                 at android.app.Notification$Style.buildStyled(Notification.java:3894)
                                                                 at android.app.Notification$MediaStyle.buildStyled(Notification.java:4415)
                                                                 at android.app.Notification$Builder.build(Notification.java:3638)
                                                                 at android.support.v4.app.NotificationCompatApi21$Builder.build(NotificationCompatApi21.java:132)
                                                                 at android.support.v7.app.NotificationCompat$LollipopExtender.build(NotificationCompat.java:484)
                                                                 at android.support.v4.app.NotificationCompat$NotificationCompatImplApi21.build(NotificationCompat.java:827)
                                                                 at android.support.v4.app.NotificationCompat$Builder.build(NotificationCompat.java:1744)
                                                                 at com.radio.igala.Service.PlayService.buildNotification(PlayService.java:253)
                                                                 at com.radio.igala.Service.PlayService.onStartCommand(PlayService.java:127)
                                                                 at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3216)
                                                                 at android.app.ActivityThread.access$2200(ActivityThread.java:188) 
                                                                 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1628) 
                                                                 at android.os.Handler.dispatchMessage(Handler.java:111) 
                                                                 at android.os.Looper.loop(Looper.java:210) 
                                                                 at android.app.ActivityThread.main(ActivityThread.java:5839) 
                                                                 at java.lang.reflect.Method.invoke(Native Method) 
                                                                 at java.lang.reflect.Method.invoke(Method.java:372) 
                                                                 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1113) 
                                                                 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:879) 

我想知道为什么它表示行动1超出界限（最大0）。这是否意味着我无法在其中添加任何操作？

Answer 1

我认为错误正在发生，因为你在addAction()之后定义了行动（setShowActionsInCompactView()）。

这样，当setShowActionsInCompactView还没有动作时，你正在尝试notificationBuilder。换句话说，它的内部数组有0个元素（最大0）

你可以尝试这样的事情：

NotificationCompat.Builder notificationBuilder = (NotificationCompat.Builder) new NotificationCompat.Builder(this)
        .addAction(action)
        ...
        .setStyle(new NotificationCompat.MediaStyle()
                .setMediaSession(mediaSession.getSessionToken())
                .setShowActionsInCompactView(0, 1, 2))
        ....;

编辑

我发现的另一个错误是：

您只创建一个操作：

NotificationCompat.Action action = new android.support.v4.app.NotificationCompat.Action.Builder(imgNotificationAction, "playPause", pendingIntent).build();

但是在这里，你要设置3个动作：

.setShowActionsInCompactView(0, 1, 2))

行动次数setShowActionsInCompactView()应与您通过addAction()添加的行动次数相匹配。

您可以添加更多操作（创建新操作并再次调用addAction()或仅向setShowActionsInCompactView()发送一个参数