Why Layout will be empty in fragment?

[cyyuk]

hi, when i use dynamicbox in WebView fragment. dynamicbox will empty my webView fragment Layout when i set the layout heigh="match_parent".

xml Code( WebView Fragment):

<LinearLayout
    android:id="@+id/shopping_cart_container"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <WebView
        android:id="@+id/shopping_webView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:visibility="visible" />
</LinearLayout>

Fragment Code

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

        dynamicBox = new DynamicBox(ShoppingCartContentPageFragment.this.getActivity(), frameLayout);
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

    sessionManager = new SessionManager(getActivity());

    if(sessionManager.getLang().equals("tc")){
        lang = "zh";
    }else{
        lang = "en";
    }

    actionBar = ((SupportActivity) getActivity()).getSupportActionBar();
    actionBar.setTitle(getLocaleStringResource(new Locale(lang), R.string.system_shopping_cart, getActivity()));


    MainActivity.mDrawerToggle.setDrawerIndicatorEnabled(true);

    if(view == null){
        view = inflater.inflate(R.layout.fragment_shopping_cart, container, false);

        initWebView();
    }else{
        ViewGroup viewGroup = (ViewGroup)view.getParent();

        if(viewGroup != null){
            viewGroup.removeView(view);
        }
    }
    return view;
}

private void initWebView(){
    mWebView = (WebView) view.findViewById(R.id.shopping_webView);

    mWebView.setWebViewClient(new WebViewClient() {
        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            dynamicBox.setLoadingMessage(getLocaleStringResource(new Locale(lang), R.string.system_loading, getActivity()));
            dynamicBox.showLoadingLayout();

            webViewSuccess = true;
            super.onPageStarted(view, url, favicon);
        }

        @Override
        public void onPageFinished(WebView view, String url) {

            if(webViewSuccess){
                dynamicBox.hideAll();
                view.loadUrl("javascript:$('.shopping-cart-wrapper').css('padding-top','0px');");
                view.loadUrl("javascript:$('.steps-contaier').css('padding-top','0px');");
                view.loadUrl("javascript:$('#cart-to-shopping').remove();");
                view.setVisibility(View.VISIBLE);
            }
        }

        @Override
        public boolean shouldOverrideUrlLoading(WebView webview, String url) {

            return true;
        }

        public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
            Log.e("error_code", description);

            mWebView.setVisibility(View.GONE);

            webViewSuccess = false;

            dynamicBox.setOtherExceptionTitle("Error");
            dynamicBox.setOtherExceptionMessage(description);
            dynamicBox.showExceptionLayout();
            dynamicBox.setClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    dynamicBox.hideAll();
                    mWebView.reload();
                }
            });

            super.onReceivedError(view, errorCode, description, failingUrl);
        }
    });
    mWebView.setWebChromeClient(new WebChromeClient() {
    });

    // Enable Javascript
    mWebView.getSettings().setAppCacheMaxSize(5 * 1024 * 1024); // 5MB
    mWebView.getSettings().setAppCachePath(getActivity().getApplicationContext().getCacheDir().getAbsolutePath());
    mWebView.getSettings().setAllowFileAccess(true);
    mWebView.getSettings().setAppCacheEnabled(true);
    mWebView.getSettings().setJavaScriptEnabled(true);
    mWebView.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);

    mWebView.loadUrl(AppConfig.URL_ROOT + sessionManager.getLang() + "/cart/");

}

But when i hide all Dynamicbox code. This fragment can show webview content

What wrong i make? can you help me?

[medyo]

Hi @cyyuk,
Could move the DynamicBox initialization to onViewCreated
https://developer.android.com/reference/android/app/Fragment.html#onViewCreated(android.view.View,android.os.Bundle)

[cyyuk]

HI @medyo

after move the DynamicBox initialization to onViewCreated

@Override
  public void onViewCreated(View view,
                            Bundle savedInstanceState){
      super.onViewCreated(view,savedInstanceState);
      dynamicBox = new DynamicBox(HomeContentPageFragment.this.getActivity(), view);
  }

I run in API 18(android 4.1) your code is OK, layout is not empty. But I run in >=API 22(Android 5.1.1),
layout also empty.....