Android Development _ About WebView loading page blank question

According to my own tests, I found that sometimes when you open a Web page with an app, some pages take a long time before they load, and some of them come out (like Baidu).

When the load time is too long, the display is a blank interface, in fact, is not a code problem, but to open the page is too large.

So in order to improve the user experience, we have to find a way to add something in the case of waiting on this blank interface.

The first thing that comes to mind is the cue box

Specific operation

Package Com.example.qunxiong;import Android.app.activity;import android.app.alertdialog;import Android.app.progressdialog;import Android.content.dialoginterface;import Android.os.bundle;import Android.util.log;import Android.view.keyevent;import Android.view.window;import Android.webkit.WebSettings;import Android.webkit.webview;import Android.webkit.webviewclient;import android.widget.Toast; Public classWeb_shijianjinbi extends Activity {PrivateWebView WebView; Private StaticFinal String TAG ="Web_shijianjinbi";//class name    PrivateProgressDialog ProgressBar; /** Called when the activity is first created.*/@Override Public voidonCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);         Requestwindowfeature (Window.feature_no_title);  Setcontentview (r.layout.web_show); The corresponding layout This. WebView =(WebView) Findviewbyid (R.id.webview);//This is the ID of the WebView control in Layout websettings settings=webview.getsettings (); Settings.setjavascriptenabled (true);         Webview.setscrollbarstyle (Webview.scrollbars_outside_overlay); Final Alertdialog Alertdialog=NewAlertdialog.builder ( This). Create (); ProgressBar= Progressdialog.show (Web_shijianjinbi. This,"here is the title of the Cue box","here is the content of the cue box"); Webview.setwebviewclient (Newwebviewclient () { PublicBoolean shouldoverrideurlloading (WebView view, String URL) {log.i (TAG,"processing webview URL click ...");                View.loadurl (URL); return true; }              Public voidonpagefinished (WebView view, String URL) {log.i (TAG,"finished loading URL:"+URL); if(Progressbar.isshowing ()) {Progressbar.dismiss (); }            }              Public voidOnreceivederror (WebView view,intErrorCode, string description, String failingurl) {LOG.E (TAG,"Error:"+description); Toast.maketext (Web_shijianjinbi. This,"Oh no!"+description, Toast.length_short). Show (); Alertdialog.settitle ("Error");                Alertdialog.setmessage (description); Alertdialog.setbutton ("OK",NewDialoginterface.onclicklistener () { Public voidOnClick (Dialoginterface Dialog,intwhich) {                        return;                }                });            Alertdialog.show ();        }        }); //here is the page to open
Webview.loadurl ("http://www.baidu.com");    }}

The following is a simple layout file

1<?xml version="1.0"encoding="Utf-8"?>2<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" 3android:orientation="Vertical" 4Android:layout_width="fill_parent" 5android:layout_height="fill_parent" 6>7<WebView8Android:id="@+id/webview" 9Android:layout_width="fill_parent" Tenandroid:layout_height="fill_parent"  One/> A</LinearLayout>

Android Development _ About WebView loading page blank question