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POhow to change view to fragment programmatically (when internet not available)
 

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  1. POhow to change view to fragment programmatically (when internet not available)
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    <p>It's been all day, I'm trying to do what I thought it was a simple task: implementing a fragment that display different views based on internet availability.</p> <p>To be clear: try to start youtube app without connectivity, you will see a beautiful error screen with a 'Retry' button. When you click the button the fragment (of just the view, or something else) reloads and, if internet is now available, display the correct items.</p> <p>I have two fragments inside a ViewPager. I want the first fragment to display an error message and a 'Retry' button. When the button is pressed, just like the youtube app does, I want to reload the content of the fragments and display the correct stuff, if the network is available.</p> <p>I've tried replacing the entire fragment from inside itself and from the main activity, changing the view programmatically and other stuff by I hadn't any success.</p> <p>Please help!</p> <p><img src="https://i.stack.imgur.com/7En8h.png" alt="Youtube error screen"></p> <p>EDIT:</p> <p>I can display the error view, I just check the internet availability inside the OnCreateView method:</p> <pre><code>@Override public View onCreateView(final LayoutInflater inflater, final ViewGroup container, final Bundle savedInstanceState) { final View view; if(CheckNetwork.isInternetAvailable(getActivity())){ view = inflater.inflate(R.layout.fragment_with_connection, container, false); } else{ view = inflater.inflate(R.layout.layout_no_connectivity, container, false); Button button = (Button)view.findViewById(R.id.button_retry); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View mview) { //DUNNO WAT TO DO } }); </code></pre> <p>}</p> <p>EDIT: I have used the answer by @daro2189 to solve my problem, who was slightly different: in this case I only need to change the view of ONE of two fragments inside a view pager.</p> <pre><code>@Override public View onCreateView(final LayoutInflater inflater, final ViewGroup container, final Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_with_connection, container, false); initNoInternetView(view); if (!CheckNetwork.isInternetAvailable(getActivity())) { if (noInternetView != null) { View child = view.findViewById(R.id.child ); child.setVisibility(View.GONE); noInternetView.setVisibility(View.VISIBLE); } } else { getInfoFromInternet(); } return view; } private void initNoInternetView(final View view) { if(view == null) return; RelativeLayout parentView = (RelativeLayout)view.findViewById(R.id.layout_no_connectivity); LayoutInflater inflater = (LayoutInflater)getActivity().getSystemService(getActivity().LAYOUT_INFLATER_SERVICE); noInternetView = inflater.inflate(R.layout.layout_no_connectivity, null); noInternetView.setVisibility(View.GONE); parentView.addView(noInternetView); final Button button = (Button)noInternetView.findViewById(R.id.button_retry); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View mview) { if(!CheckNetwork.isInternetAvailable(getActivity())){ if(noInternetView != null){ noInternetView.setVisibility(View.VISIBLE); noInternetView.bringToFront(); } } else { if(noInternetView != null){ noInternetView.setVisibility(View.GONE); View child = view.findViewById(R.id.child); child.setVisibility(View.VISIBLE); getInfoFromInternet(); } } } }); } </code></pre>
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