Android - 如何从 fragment 内部调用 fragment ？

Question

我有一个显示卡片 View 的 fragment ，类似于仪表板。每个卡片 View 都应替换仪表板 fragment 并在单击时调用自己的 fragment ，但我似乎无法做到。我尝试了以下方法:

imageId.Click += delegate {
                ((FragmentActivity)Activity).ShowFragment(SmokeSensor);
            };

Activity 中的方法:

public void ShowFragment(SupportFragment fragment) {
        var transaction = SupportFragmentManager.BeginTransaction();
        connectionStatus.Visibility = ViewStates.Gone;

        if (!ConnectionDetector.IsConnected(this)) {
            connectionStatus.Visibility = ViewStates.Visible;

            transaction.Detach(currentFragment);
            transaction.Commit();
            drawerLayout.CloseDrawer(leftDrawer);

            return;
        }


        if (fragment == currentFragment) {
            transaction.Detach(currentFragment);
            transaction.Attach(currentFragment);
            transaction.Commit();
            drawerLayout.CloseDrawer(leftDrawer);

            return;
        }

        transaction.SetCustomAnimations(Resource.Animation.slide_in, Resource.Animation.slide_out);
        transaction.Replace(Resource.Id.fragment_container, fragment);
        transaction.Commit();
        drawerLayout.CloseDrawer(leftDrawer);
        currentFragment = fragment;
    }

Answer 1

您可以在主 Activity 中创建一个公共(public)方法并调用该方法来替换或加载当前 fragment 中事件的 fragment 。