在新片段中打开解析通知

Question

我正在开发一个在主要活动中运行3个标签（片段）的android项目。我想在通知选项卡中打开从解析发送的通知，而不是打开主要活动。已经阅读了与此相关的所有答案，但没有奏效。这是我的代码如下。 这是接收通知的代码

 Intent launchActivity = new Intent(context, MainActivity.class);
    launchActivity.setAction("op_notify");
    PendingIntent pi = PendingIntent.getActivity(context, 0, launchActivity, 0);
    NotificationCompat.InboxStyle inboxStyle = new NotificationCompat.InboxStyle();

    Notification noti = new NotificationCompat.Builder(context)
            .setContentTitle(title)
            .setContentText(message)
            .setSmallIcon(R.drawable.ic_push)
            .setStyle(inboxStyle)
            .setLargeIcon(icon)
            .setContentIntent(pi)
            .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
            .setAutoCancel(true)
            .build();

    NotificationManager nm = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
    nm.notify(0, noti);

MainActivity中的代码

protected void onCreate(Bundle savedInstanceState) {
    Intent intent = getIntent();
    String action = intent.getAction();
    if(action!=null)
    {
        Log.e("Received action",action);
        FragmentManager fragmentManager = getSupportFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        Shownotifications shownotifications = new Shownotifications();
        fragmentTransaction.replace(R.id.pager, shownotifications);

    }

    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    FragmentManager manager = getSupportFragmentManager();
    viewPager = (ViewPager) findViewById(R.id.pager);
    tabLayout= (SlidingTabLayout) findViewById(R.id.tabs);

    viewPager.setAdapter(new PagerAdapter(manager));

    tabLayout.setDistributeEvenly(true);
    tabLayout.setCustomTabColorizer(new SlidingTabLayout.TabColorizer() {
        @Override
        public int getIndicatorColor(int position) {
            return getResources().getColor(R.color.tabsScrollColor);
        }
    });
    tabLayout.setViewPager(viewPager);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

class PagerAdapter extends FragmentStatePagerAdapter
{

    public PagerAdapter(FragmentManager fm)
    {
        super(fm);
    }

    @Override
    public Fragment getItem(int i)
    {
        Fragment frag=null;
        if(i==0)
        {
            frag = new PostsView();

        }
        if(i==1)
        {
            frag= new Favourite();

        }
        if(i==2)
        {

            frag= new Shownotifications();
        }


        return frag;
    }

    @Override
    public int getCount() {

        return 3;
    }
     @Override
    public CharSequence getPageTitle(int position) {
        if(position==0){
            return "Posts";
        }

        if(position==1){
             return "Favourite";
         }

         if(position==2){
             return "Notifications";
         }

        return "Default";
    }
}