Question

我的申请中有下载通知。我已通过调用NotificationCompat.Builder方法向addAction()添加了“取消”按钮。但按钮无法在Android O设备上运行。当我按“取消”按钮时没有任何反应。但按钮在Android上运行＆lt; O操作。

我的Notification：

NotificationCompat.Builder notification = new NotificationCompat.Builder(context, channelId)
            .setContentTitle(title)
            .setSmallIcon(R.drawable.network_download)
            .setContentText(contentText)
            .setOngoing(true)
            .setContentIntent(null)
            .addExtras(idBundle)
            .addAction(R.drawable.cancel, context.getString(R.string.cancel), getCancelPendingIntent(context, id))
            .setProgress(100, 30, true);

我的PendingIntent：

private PendingIntent getCancelPendingIntent(Context context, int id){
    return PendingIntent.getBroadcast(
            context, id, new Intent("CANCEL_DOWNLOAD").putExtra("id", id), PendingIntent.FLAG_UPDATE_CURRENT);
}

我还有NotificationReceiver：

public static class NotificationReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if ("CANCEL_DOWNLOAD".equals(action) && context != null){
            int id = intent.getIntExtra("id", -1);
            NotificationManager mgr = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
            if (mgr != null)
                mgr.cancel(id);
            FtpManager.getInstance(new AppExecutors(), CredentialsManager.getInstance().getCredentials(context))
                    .cancelDownloading();
        }
    }
}

在Manifest文件中我有：

<receiver
        android:name="eu.warble.pjapp.util.NotificationsManager$NotificationReceiver"
        android:exported="false">
        <intent-filter>
            <action android:name="CANCEL_DOWNLOAD" />
        </intent-filter>
</receiver>

Answer 1

从不在显式Intent时使用隐式Intent。 Android O通过禁止从清单注册的接收方接收隐式Intent广播来帮助强制执行此操作。

第1步：从<intent-filter>中移除<receiver>（这也意味着您可以摆脱android:exported="false"，因为这是默认值）

第2步：将new Intent("CANCEL_DOWNLOAD").putExtra("id", id)替换为new Intent(context, NotificationReceiver.class).putExtra("id", id)

Answer 2

非常感谢CommonsWare。这个对我有用。这是我的代码

    var notifyIntent = Intent(context, NotificationBroadcastReceiver::class.java)
                notifyIntent.action = "ACTION_UPDATE_BADGE"//hardcode in manifest

                if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
                    // only for oreo and newer versions
                    notifyIntent = Intent(context, NotificationBroadcastReceiverAndroidO::class.java)
                }
val pendingIntent = PendingIntent.getBroadcast(context, it, notifyIntent, PendingIntent.FLAG_ONE_SHOT)

清单中

<receiver android:name=".firebase.NotificationBroadcastReceiver">
            <intent-filter>
                <action android:name="ACTION_UPDATE_BADGE" />
            </intent-filter>
        </receiver>

        <receiver android:name=".firebase.NotificationBroadcastReceiverAndroidO">
            <!--Android O not working when having this code
            <intent-filter>
                <action android:name="ACTION_UPDATE_BADGE" />
            </intent-filter>-->
        </receiver>

创建2个课程：

open class NotificationBroadcastReceiver : BroadcastReceiver() {...}
open class NotificationBroadcastReceiverAndroidO : NotificationBroadcastReceiver() {/*do nothing*/}

PendingIntent不适用于Android O.

2 个答案: