java - onClick 通知 fragment Android

Question

我正在研究通知部分。我能够将用户导航到通知消息的单击 Activity 。我的实际任务是将用户导航到 fragment 。

这是工作正常的通知代码。

NotificationCompat.Builder builder =
            new NotificationCompat.Builder(getApplicationContext())
                    .setSmallIcon(R.mipmap.ic_launcher)
                    .setContentTitle("Lugmah Order Status")
                    .setContentText("The Order Status of Order Id: "+selectedOrderId+ " is: "+status_desc)
                    .setDefaults(NotificationCompat.DEFAULT_SOUND)
                    .setAutoCancel(true);
    int NOTIFICATION_ID = 12345;

    Intent targetIntent = new Intent(getApplicationContext(), MainActivity.class);

    targetIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);

    targetIntent.putExtra("isTrackOrder", false);
    targetIntent.putExtra("orderNotification", "orderNotification");
    targetIntent.putExtra("isLoggedIn", true);
    targetIntent.putExtra("status_desc", status_desc);
    targetIntent.putExtra("selectedOrderId", selectedOrderId);

    PendingIntent contentIntent = PendingIntent
                .getActivity(getApplicationContext(), 0, targetIntent, PendingIntent.FLAG_ONE_SHOT);

    builder.setContentIntent(contentIntent);


    NotificationManager nManager = (NotificationManager) getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE);
    nManager.notify(NOTIFICATION_ID, builder.build());

我在 Intent 中添加了MainActivity.java，因为这是我加载所有 fragment 的地方。在这次 Activity 中，我做了这样的事情。

这是 onCreate() 中的代码:

String orderNotification = getIntent().getStringExtra("orderNotification");

        android.support.v4.app.FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();

        if (orderNotification != null)
        {
            if (orderNotification.equals("orderNotification"))
            {
                TrackOrderFragment trackOrderFragment = new TrackOrderFragment();
                fragmentTransaction.replace(android.R.id.content, trackOrderFragment);
                fragmentTransaction.addToBackStack(null);
                fragmentTransaction.commit();
            }
        }

如果有帮助，我们将不胜感激。

Answer 1

您的通知代码工作正常，您需要稍微调整一下 onCreate 代码。

if(getIntent().getExtras() != null) {
   String orderNotification = getIntent().getStringExtra("orderNotification");  

  if (orderNotification.equals("orderNotification"))
            {
                TrackOrderFragment trackOrderFragment = new TrackOrderFragment();
                fragmentTransaction.replace(android.R.id.content, trackOrderFragment);
                fragmentTransaction.addToBackStack(null);
                fragmentTransaction.commit();
            }
        }

您需要在每次 Activity 运行 onCreate 时检查是否收到任何额外内容，因为可能会发生空指针异常。