PendingIntent 不适用于 Android O

我的应用程序中有下载通知。我添加了“取消”按钮NotificationCompat.Builder通过致电addAction()方法。但按钮在 Android O 设备上不起作用。当我按“取消”按钮时，什么也没有发生。但按钮在 Android

My 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);

My 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();
        }
    }
}

In Manifest我有的文件：

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

Never使用隐式Intent当明确的Intent会做。 Android O 通过禁止接收隐式信息来帮助强制执行此操作Intent来自清单注册接收器的广播。

步骤#1：删除<intent-filter>从你的<receiver>（这也意味着你可以摆脱android:exported="false"，因为现在这是默认值）

步骤#2：更换new Intent("CANCEL_DOWNLOAD").putExtra("id", id) with new Intent(context, NotificationReceiver.class).putExtra("id", id)