Can not resolve method 'findViewById(int)'

Question

I\'m having a trouble with findViewByid but I can\'t find where the problem is.

Here\'s my FirstFragment class code:

import and         


        

Answer 1

Add getView() before findViewById() method.

Like this:

getView().findViewById(R.id.potatoes);

Answer 2

getActivity().findViewById() This works it removes the red colour of findviewby id and it doesnt say cannot resolve symbol but when i put a colin in the end the whole statement is underlined and it says unreachable statement. barChart =(BarChart)getActivity().findViewById(R.id.barchart); I am also doing this in fragment.

Answer 3

I had this problem when I downloaded sample project from github. This project had

compileSdkVersion 23
buildToolsVersion "23.0.0"
targetSdkVersion 23

in Activity context and findViewById() were in red color inside onCreate() method. So I updated the above versions to

compileSdkVersion 25
buildToolsVersion "25.0.3"
targetSdkVersion 25

and error got resolved.

Answer 4

You need to do this in onCreateView:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle   savedInstanceState) {
   View view =  inflater.inflate(R.layout.secondefragment, container, false);
    mWebView = (WebView) view.findViewById(R.id.activity_main_webview);
   progressBar = (ProgressBar) view.findViewById(R.id.progressBar1);

   WebSettings webSettings = mWebView.getSettings();
   webSettings.setJavaScriptEnabled(true);
   mWebView.loadUrl("http://www.google.com");

   return view;


}

Answer 5

Fragment doesn't provide thefindViewById() method. This is provided in Activity or View. When implementing a Fragment you don't inflate your views in onCreate() (like you normally do in an Activity.) Instead, you do it in onCreateView() and you need to use the inflated root View to find the ID within the layout you inflated.

Answer 6

This is how you can solve the problem:

toggleButton1=(ToggleButton)findViewById(R.id.toggleButton1);  
toggleButton2=(ToggleButton)findViewById(R.id.toggleButton2);