Webview load html from assets directory

Question

I m trying to load a html page from the assets directory  I tried this  but it fails   public class ViewWeb extends Activity          Override       public void onCreate Bundle savedInstanceState              super onCreate savedInstanceState             WebView wv            wv    WebView  findViewById R id webView1             wv loadUrl  file    android asset aboutcertified html         fails here         setContentView R layout webview                 I don t really get any telling errors in LogCat

User · Answer

protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main           WebView wb   new WebView this           wb loadUrl  file    android asset index html            setContentView wb           keep your  html in  asset  folder

User · Answer

You are getting the WebView before setting the Content view so the wv is probably null   public class ViewWeb extends Activity              Override           public void onCreate Bundle savedInstanceState                  super onCreate savedInstanceState               setContentView R layout webview                 WebView wv                wv    WebView  findViewById R id webView1                 wv loadUrl  file    android asset aboutcertified html         now it will not fail here

User · Answer

Download source code from here  Open html file from assets android   activity main xml   lt RelativeLayout xmlns android  http   schemas android com apk res android   android layout width  match parent   android background   FFFFFF   android layout height  match parent  gt    lt WebView  android layout width  match parent   android id    id webview   android layout height  match parent   android layout margin  10dp  gt  lt  WebView gt   lt  RelativeLayout gt    MainActivity java  package com deepshikha htmlfromassets   import android app ProgressDialog   import android support v7 app AppCompatActivity   import android os Bundle   import android webkit WebView   import android webkit WebViewClient   public class MainActivity extends AppCompatActivity    WebView webview   ProgressDialog progressDialog    Override  protected void onCreate Bundle savedInstanceState     super onCreate savedInstanceState    setContentView R layout activity main    init        private void init     webview    WebView findViewById R id webview    webview loadUrl  file    android asset download html     webview requestFocus     progressDialog   new ProgressDialog MainActivity this    progressDialog setMessage  Loading     progressDialog setCancelable false    progressDialog show     webview setWebViewClient new WebViewClient      public void onPageFinished WebView view  String url     try    progressDialog dismiss       catch  Exception e     e printStackTrace

User · Answer

Whenever you are creating activity  you must add setcontentview your layout  after super call  Because setcontentview bind xml into your activity so that s the reason you are getting nullpointerexception     setContentView R layout webview      webView    WebView  findViewById R id webView1    wv loadUrl  file    android asset xyz html

[android] Webview load html from assets directory

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