Android how to stop refreshing Fragments on tab change

Question

I have the following code :

MainActivity.java

package com.erc.library;

import java.io.BufferedInputStream;
import java.io.File;
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Answer 1

In my case above suggestion does not work.

To restrict recreation of fragment, what i did:

In onCreateView you can store inflated view in a global variable and initialize it only if it is null, like in this code:

    var root:View?=null
    var apiDataReceived=false
 override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?,
                          savedInstanceState: Bundle?): View? {
    // Inflate the layout for this fragment
    if (root==null)
        root=inflater!!.inflate(R.layout.fragment_layout, container, false)
    return root
}

Now if you are parsing some data and fill it into RecyclerView or any other View

1. Make a global variable like in above code apiDataReceived

2. Set it to true if you successfully parsed data.

3. Before apiCalls place a condition like this:

   if (!apiDataReceived) { apiCalls() }

So if apiCalls() would be called only if data is not parsed.

Do your http calls and parsing or any other thing in method which called after onCreateView like onStart

The above code is in kotlin, If you are facing any issue, let me know in comments.