Snack in a specific piece

Question

I have 5 sliding tabs in ViewPager, each of which contains a different fragment. If the data does not load, I want to notify the user through Snackbar. It works great.

I am trying to achieve if the data is not loading in a specific fragment, I want to show Snackbaronly in this specific fragment. Is it possible?

I will clarify:

Consider a sliding layout of tabs with 3 fragments like A, B and C. All 3 fragments fulfill some network request and load data. If for some reason the data is not loaded in fragment A, the snack bar should be displayed indefinitely. And if the user goes to fragment B (in which the data is loaded successfully), the snackbar should not be visible.

Thus, the snack bar should be visible only in the fragment that could not load the data.

Fragment Code:

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/fragment_latest"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="?android:attr/windowBackground"
tools:context=".MainFragment">

<android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/swipe_view"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <LinearLayout
            android:id="@+id/date_layout"
            android:visibility="gone"
            android:layout_gravity="center_horizontal"
            android:orientation="horizontal"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">

            <android.support.v7.widget.AppCompatSpinner
                android:id="@+id/country_select"
                style="@style/Base.Widget.AppCompat.Spinner.Underlined"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:entries="@array/country"
                />

            <android.support.v7.widget.AppCompatSpinner
                android:id="@+id/month_select"
                style="@style/Base.Widget.AppCompat.Spinner.Underlined"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:entries="@array/month"
                />

            <android.support.v7.widget.AppCompatSpinner
                android:id="@+id/year_select"
                style="@style/Base.Widget.AppCompat.Spinner.Underlined"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:entries="@array/year"
                />

        </LinearLayout>

        <android.support.v7.widget.RecyclerView
            android:id="@+id/latest_recyclerview"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />

    </LinearLayout>

</android.support.v4.widget.SwipeRefreshLayout>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center">

    <TextView
        android:id="@+id/not_available"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:fontFamily="sans-serif-medium"
        android:gravity="center"
        android:textSize="16sp" />

</LinearLayout>

Diner Code:

if (Utils.isNetworkAvailable(getActivity())) {
        adapter.notifyDataSetChanged();
        loadData();
    } else {
        swipeRefreshLayout.setRefreshing(false);
        textView.setText(getString(R.string.check_internet));
        Snackbar.make(frameLayout, "Loading failed.", Snackbar.LENGTH_INDEFINITE).setAction("Retry", new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                ((MainActivity) getActivity()).loadAds();
                refreshData();
            }
        }).show();
    }

Where

FrameLayout frameLayout = (FrameLayout) v.findViewById(R.id.fragment_latest);

Answer 1

What you can do is redefine setUserVisibleHintand save the snakbar in the global variable in the fragment, when the fragment becomes invisible, release the snackbar using the method below

@Override
public void setUserVisibleHint(boolean visible)
{
    super.setUserVisibleHint(visible);
    if (!visible && snackbar != null ){
       snackbar.dismiss()
    }
}