Question

我尝试通过存储在通知中的意图传递String。但是当我从新片段的意图中获取String时，它是一个null并且它给了我一个NullPointerException。

创建通知的代码（在活动A中的片段A的方法A中）

Notification.Builder mBuilder = new Notification.Builder(getActivity().getBaseContext());
        mBuilder.setContentTitle("My first notification");
        mBuilder.setContentText("Click to see the details...");
        mBuilder.setSmallIcon(R.drawable.ic_launcher);

        //Intent maken voor notification
        Intent intentVoorNotificatie = new Intent(getActivity(), activity_detail_notification.class);
        EditText edTekst = (EditText) getActivity().findViewById(R.id.etTekst);


        String strTekstNotificatie = edTekst.getText().toString();
        intentVoorNotificatie.putExtra("detailNotificatie", strTekstNotificatie);


        //Intent naar PendingIntent converteren
        PendingIntent pIntentVootNotificatie = PendingIntent.getActivity(getActivity().getBaseContext(),
                                                0, intentVoorNotificatie, PendingIntent.FLAG_ONE_SHOT);
        mBuilder.setContentIntent(pIntentVootNotificatie);

        //Notificatie tonen
        NotificationManager mNotificationManager = (NotificationManager) getActivity().getSystemService(Context.NOTIFICATION_SERVICE);
        mNotificationManager.notify(1,mBuilder.build());

活动B中片段B的方法A

//Haal doorgegeven tekst uit intent
    Intent intent = getActivity().getIntent();
    String strTekst = intent.getStringExtra("detailNotificatie");

    TextView tvTekst = (TextView) getActivity().findViewById(R.id.tvDetailVanNotificatie);
    tvTekst.setText(strTekst);

我在setText()方法上得到nullPointer，因为当从意图中提取String时，String为空。

我是否因为数据丢失或被解雇而做错了什么？

Answer 1

尝试更改此代码`

 PendingIntent pIntentVootNotificatie = PendingIntent.getActivity(getActivity().getBaseContext(),
                                                0, intentVoorNotificatie, PendingIntent.FLAG_ONE_SHOT);

到这个`

PendingIntent pIntentVootNotificatie = PendingIntent.getActivity(getActivity().getBaseContext(),
                                                0, intentVoorNotificatie, PendingIntent.FLAG_UPDATE_CURRENT);

Android意图通过通知不保留额外数据

1 个答案: