android.app.PendingIntent cannot be accessed ouside the package

问题

I'm trying to make notification, but it keeps telling me that

PendingIntent in android.app.PendingIntent is not public it cannot be accessed outside the package

this is the full method:

final Runnable m_Runnable = new Runnable() {
    public void run()

    {
        FirebaseDatabase.getInstance().getReference("messages").endAt(user.getUid()).addListenerForSingleValueEvent(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                //Toast.makeText(Chat.this,user.getUid(),Toast.LENGTH_SHORT).show();
                if (user != null) {
                    for (DataSnapshot ds : dataSnapshot.getChildren()) {
                        Conversation conversation = ds.getValue(Conversation.class);
                        lastMsgMil = Calendar.getInstance().getTimeInMillis();
                        if (lastMsgDate == null
                                || lastMsgDate.before(conversation.getDate())) {
                            if (lastMsgMil < conversation.getTimeinmillies()
                                    || (conversation.getReceiver().contentEquals(user.getUid())
                                    && conversation.getSender().contentEquals(buddy.getId()))) {
                                lastMsgDate = conversation.getDate();
                                //lastMsgMil = conversation.getTimeinmillies();
                                if (conversation.getReceiver().contentEquals(user.getUid()) && conversation.getSender().contentEquals(buddy.getId())) {
                                    conversation.setStatus(Conversation.STATUS_RECEIVED);
                                    FirebaseDatabase.getInstance().getReference("messages").child(ds.getKey()).child("status").setValue(Conversation.STATUS_RECEIVED);
                                }
                                if ((conversation.getReceiver().contentEquals(user.getUid())
                                        && conversation.getSender().contentEquals(buddy.getId()))
                                        || (conversation.getSender().contentEquals(user.getUid())
                                        && conversation.getReceiver().contentEquals(buddy.getId()))) {
                                    convList.add(conversation);
                                }
                                if ((conversation.getReceiver().contentEquals(user.getUid())
                                        && !conversation.getSender().contentEquals(buddy.getId()))) {
                                    //notList.add(conversation.getMsg());
                                    NotificationManager notMan = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
                                    Intent intent = new Intent(Chat.this, Chat.class);
                                    intent.putExtra(Const.EXTRA_DATA, conversation.getSender());
                                    PendingIntent pendingIntent = new android.app.PendingIntent(Chat.this, (int) System.currentTimeMillis(), intent, 0);
                                    NotificationCompat.Builder builder = new NotificationCompat.Builder(Chat.this);
                                    builder.setSmallIcon(R.drawable.ic_launcher)
                                            .setContentTitle(conversation.getSender())
                                            .setContentText(conversation.getMsg())
                                            .build();
                                    //android.app.TaskStackBuilder stackBuilder = new android.app.TaskStackBuilder(Chat.this);


                                }
                            }
                        }
                    }
                }

and here is the problem

NotificationManager notMan = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
                                    Intent intent = new Intent(Chat.this, Chat.class);
                                    intent.putExtra(Const.EXTRA_DATA, conversation.getSender());
                                    PendingIntent pendingIntent = new android.app.PendingIntent(Chat.this, (int) System.currentTimeMillis(), intent, 0);
                                    NotificationCompat.Builder builder = new NotificationCompat.Builder(Chat.this);
                                    builder.setSmallIcon(R.drawable.ic_launcher)
                                            .setContentTitle(conversation.getSender())
                                            .setContentText(conversation.getMsg())
                                            .build();

回答1:

You do not create a PendingIntent via a constructor. You create a PendingIntent via one of the factory methods, such as getActivity(), getService(), or getBroadcast().

来源：https://stackoverflow.com/questions/41594693/android-app-pendingintent-cannot-be-accessed-ouside-the-package