锁定屏幕中无法点击通知操作按钮

时间:2014-12-28 05:37:54

标签: android android-notifications

为了更好地支持Android 5通知,我现在将应用程序的通知可见性设置为“public”。在考虑Lollipop Notification setVisibility() Does Not Work?上的答案后,通知现在按预期显示。但是,当我想单击通知的操作按钮时,我首先必须解锁不应该需要的设备。 (该操作显示密码数据库已解锁,操作按钮将锁定数据库。)

这是我使用创建通知的代码(使用Xamarin的Mono for Android):

NotificationCompat.Builder builder =
                new NotificationCompat.Builder(this)
                    .SetOngoing(true)
                    .SetSmallIcon(Resource.Drawable.ic_notify)
                    .SetLargeIcon(...)
                    .SetVisibility((int)Android.App.NotificationVisibility.Public)
                    .SetContentTitle(...)
                    .SetContentText(...);

builder.AddAction(Resource.Drawable.ic_action_lock, GetString(Resource.String.menu_lock), PendingIntent.GetBroadcast(this, 0, new Intent(Intents.LockDatabase), PendingIntentFlags.UpdateCurrent));

其中this是服务实例。

我知道MediaStyle通知有可点击的按钮,但感觉就像使用MediaStyle一样,即使它不是关于媒体的。有什么方法可以让我的动作在锁定屏幕上可用吗?

2 个答案:

答案 0 :(得分:4)

不是添加操作,而是定义自己的通知布局,并通过RemoteView连接pendingIntent以触发该操作。 (以下示例基于Holo外观,并且仍然需要更新棒棒糖。您可以在sdk的android-21 / data / res文件夹中找到所有正确的资源)

// NOTE: while creating pendingIntent: requestcode must be different!
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(myService)
        .setSmallIcon(R.drawable.notification_icon).setContentTitle("My Title")
        .setContentText("Service running in the background");
Intent openIntent = new Intent(MainActivity.this, MainActivity.class);
PendingIntent pOpenIntent = PendingIntent.getActivity(this, 0, openIntent, 0);
mBuilder.setContentIntent(pOpenIntent);

// Notification with exit button if supported
String ACTION_NOTIFICATION_EXITACTIVITY = "com.jmols.example.exitactivity";
Intent exitIntent = new Intent();
exitIntent.setAction(ACTION_NOTIFICATION_EXITACTIVITY);
PendingIntent pExitIntent = PendingIntent.getBroadcast(this, 1, exitIntent, 0);
RemoteViews view = new RemoteViews(getPackageName(), R.layout.notification_discoveryservice);
view.setOnClickPendingIntent(R.id.notification_closebtn_ib, pExitIntent);
mBuilder.setContent(view);

使用通知布局:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:internal="http://schemas.android.com/apk/prv/res/android"
    android:id="@+id/status_bar_latest_event_content"
    android:layout_width="match_parent"
    android:layout_height="64dp"
    internal:layout_maxHeight="64dp"
    internal:layout_minHeight="64dp" >

    <ImageView
        android:id="@+id/notification_icon_iv"
        android:layout_width="64dp"
        android:layout_height="64dp"
        android:padding="10dp"
        android:layout_alignParentLeft="true"
        android:scaleType="center"
        android:src="@drawable/notification_icon"
        android:background="#3333B5E5" />

    <ImageButton
        android:id="@+id/notification_closebtn_ib"
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:scaleType="centerInside"
        android:src="@drawable/notification_exitbtn"
        android:background="@drawable/notification_imagebtn_bg"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="fill_vertical"
        android:gravity="top"
        android:minHeight="64dp"
        android:layout_toRightOf="@id/notification_icon_iv"
        android:layout_toLeftOf="@id/notification_closebtn_ib"
        android:orientation="vertical"
        android:paddingBottom="2dp"
        android:paddingEnd="8dp"
        android:paddingTop="2dp" >

        <TextView
            android:id="@+id/notification_title_tv"
            style="@android:style/TextAppearance.StatusBar.EventContent.Title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="8dp"
            android:ellipsize="marquee"
            android:paddingTop="6dp"
            android:singleLine="true"
            android:text="JMols Service" />

        <TextView
            android:id="@+id/notification_contenttext_tv"
            style="@android:style/TextAppearance.StatusBar.EventContent"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="8dp"
            android:ellipsize="marquee"
            android:singleLine="true"
            android:text="Service running in the background" />

    </LinearLayout>

</RelativeLayout>

通知背景是:

<selector xmlns:android="http://schemas.android.com/apk/res/android"
    android:exitFadeDuration="@android:integer/config_mediumAnimTime">

    <item android:state_pressed="true"  android:drawable="@drawable/notification_bg_normal_pressed" />
    <item android:state_pressed="false" android:drawable="@drawable/notification_bg_normal" />
</selector>

notification_bg_normal.9 notification_bg_normal_pressed.9

通知图像按钮背景是:

<selector xmlns:android="http://schemas.android.com/apk/res/android"
    android:exitFadeDuration="@android:integer/config_mediumAnimTime">

    <item android:state_pressed="true"  android:drawable="@drawable/notification_imagebtn_bg_normal_pressed" />
    <item android:state_pressed="false" android:drawable="@drawable/notification_imagebtn_bg_normal" />
</selector>

notification_imagebtn_bg_normal.9.png notification_imagebtn_bg_normal_pressed.9.png

答案 1 :(得分:0)

我认为Android只允许Media Lockback可以从锁定屏幕进行控制,其他通知必须首先解锁屏幕以启动活动是为了安全起见。例如,您可能想知道您收到新邮件,您甚至可能希望显示刚刚到达的邮件的某些内容,但您可能不希望其他人在设备被锁定时访问您的电子邮件帐户。在媒体播放控制中,用例不会出现此类安全问题。