<?xml version= "1.0" encoding= "Utf-8"?><relativelayout xmlns:android="Http://schemas.android.com/apk/res/android" xmlns:tools= "http://schemas.android.com/tools"android:layout_width="Match_ Parent "android:layout_height="match_parent "tools:context=" Com.example.ygd.jreduch09.WebViewActivity "> <button android:id = "@+id/bt" android:layout_alignparentright< /span>= "true" android:text =" go to " android:layout_width = android:layout_height =" Wrap_ Content "/> <edittext android:id = "@+id/et" android:layout_toleftof =< Span class= "Hljs-value" > "@+id/bt" android:layout_width =" match_parent " android:layout_height =" wrap_content "/> <WebViewandroid:id="@+id/wv"android:layout_below="@+id/et" android:layout_width="Match_parent"android:layout_height="Match_parent" > </WebView></relativelayout> Public class webviewactivity extends appcompatactivity { PrivateWebView WV;PrivateEditText et;PrivateButton BT;@Override protected void onCreate(Bundle savedinstancestate) {Super. OnCreate (Savedinstancestate); Setcontentview (R.layout.activity_web_view); wv= (WebView) Findviewbyid (R.ID.WV); et= (EditText) Findviewbyid (r.id.et); bt= (Button) Findviewbyid (R.ID.BT); Bt.setonclicklistener (NewView.onclicklistener () {@Override Public void OnClick(View v) {String url="http //"+et.gettext (). toString (); WebSettings settings=wv.getsettings ();//Get Websetting objectSettings.setjavascriptenabled (true);//Set whether JavaScript is supportedSettings.setsupportzoom (true);//Set whether zooming is supportedSettings.setdisplayzoomcontrols (true);//Set built-in zoom controlWv.setwebviewclient (NewWebviewclient ());//Using webviewclient as a clientWv.loadurl (URL);//Open a page} }); }} Public class webviewhtmlactivity extends appcompatactivity { PrivateWebView WV;@Override protected void onCreate(Bundle savedinstancestate) {Super. OnCreate (Savedinstancestate); Setcontentview (r.layout.activity_web_view_html); wv= (WebView) Findviewbyid (R.ID.WV); StringBuilder sbd=NewStringBuilder ();//Use StringBuilder here as far as possibleSbd.append ("); Sbd.append ("); Sbd.append ("<body>"); Sbd.append ("); Sbd.append ("<ul>"); Sbd.append ("<li> unordered list ul tags </li>"); Sbd.append ("</ul>"); Sbd.append ("<ol>"); Sbd.append ("<li> Nested li tags </li>"); Sbd.append ("</ol>"); Sbd.append ("</body>"); Sbd.append ("); Wv.loaddatawithbaseurl (NULL, Sbd.tostring (),"Text/html","Utf-8",NULL); }}Write an HTML file into the project's assets directory (no new in the location)
The HTML code is as follows:
<html><head> <title>My first page</title> <script> function test(){var a=1; var b=' Week '; alert (b+a); } </script><body><H1>Big Headlines</H1><ul> <li>How are you doing</li> <li>World</li> <li>Ha ha</li></ul><input type="button" onclick="Test ()" value="click My "></body></head></html> Public class loadhtmlactivity extends appcompatactivity { PrivateWebView WV;PrivateButton Bt1,bt2;PrivateProgressBar ProgressBar;@Override protected void onCreate(Bundle savedinstancestate) {Super. OnCreate (Savedinstancestate); Setcontentview (r.layout.activity_load_html); wv= (WebView) Findviewbyid (R.ID.WV); bt1= (Button) Findviewbyid (R.ID.BT1); Bt2= (Button) Findviewbyid (R.ID.BT2); Progressbar= (ProgressBar) Findviewbyid (R.ID.PB); WebSettings settings=wv.getsettings (); Settings.setjavascriptenabled (true); Wv.setwebchromeclient (NewMyClient ()); Wv.setwebviewclient (NewWebviewclient ()); Wv.loadurl ("File:///android_asset/1.html");//asset don't add s//Wv.loadurl ("http://www.baidu.com");Bt1.setonclicklistener (NewView.onclicklistener () {//Invoke methods in HTML via the layout button @Override Public void OnClick(View v) {Wv.loadurl ("File:///android_asset/1.html"); Wv.loadurl ("Javascript:test ()"); } }); Bt2.setonclicklistener (NewView.onclicklistener () {@Override Public void OnClick(View v) {progressbar.setvisibility (view.visible); Wv.loadurl ("Http://www.baidu.com"); } }); } Public class myclient extends webchromeclient{ @Override Public void onprogresschanged(WebView view,intnewprogress) {Super. onprogresschanged (view, newprogress);if(newprogress== -) {progressbar.setvisibility (view.gone); } } }}Simple use summary of Android WebView controls
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