当我旋转我的屏幕，web视图重新加载整个页面。我不能让这一点，因为我的某些内容包含动态/随机材料。目前，当旋转屏幕重新载入使用loadURL（）方法的原始URL。

任何想法有什么不对我的code？

MainActivity.java 的

 包com.mark.myapp;

进口android.app.Activity;
进口android.os.Bundle;
进口android.util.Log;
进口android.view.KeyEvent;
进口android.view.Menu;
进口android.webkit.WebView;
进口android.webkit.WebViewClient;

公共类MainActivity延伸活动{

    的WebView网页;
    字符串WEBURL =htt​​p://www.google.co.uk/;

    @覆盖
    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.activity_main）;

        如果（savedInstanceState！= NULL）
            （（web视图）findViewById（R.id.web））restoreState（savedInstanceState）。

        网页=（web视图）findViewById（R.id.web）;
        web.getSettings（）setJavaScriptEnabled（真）。
        web.loadUrl（WEBURL）;
        web.setPadding（0，0，0，0）;
        。web.getSettings（）setLoadWithOverviewMode（真正的）;
        。web.getSettings（）setUseWideViewPort（真正的）;
        。web.getSettings（）setSupportZoom（真正的）;
        。web.getSettings（）setBuiltInZoomControls（真正的）;

        web.setWebViewClient（新HelloWebViewClient（））;
    }

    @覆盖
    公共布尔onCreateOptionsMenu（功能菜单）{
        。getMenuInflater（）膨胀（R.menu.activity_main，菜单）;
        返回true;
    }

    私有类HelloWebViewClient扩展WebViewClient {
        公共布尔shouldOverrideUrlLoading（web视图网站，字符串URL）{
            web.loadUrl（URL）;
            返回true;
        }
    }

    公共布尔的onkeydown（INT键code，KeyEvent的事件）{
        如果（（钥匙code == KeyEvent.KEY code_BACK）及和放大器; web.canGoBack（））{
            web.goBack（）;
            返回true;
        }
        返回super.onKeyDown（键code，事件）;
    }

}
 

的Andr​​oidManifest.xml 的

 ＆LT;舱单的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
    包=com.mark.myapp
    安卓版code =1
    机器人：VERSIONNAME =1.0＆GT;

    ＆LT;用途-SDK
        安卓的minSdkVersion =8
        机器人：targetSdkVersion =15/＆GT;

    ＆lt;应用
        机器人：图标=@可绘制/ ic_launcher
        机器人：标签=@字符串/ APP_NAME
        机器人：主题=@风格/ AppTheme＆GT;
        ＆LT;活动
            机器人：名称=。MainActivity

            机器人：configChanges =方向| keyboardHidden＆GT;
            ＆LT;意向滤光器＆gt;
                ＆lt;作用机器人：名称=android.intent.action.MAIN/＆GT;

                ＆LT;类机器人：名称=android.intent.category.LAUNCHER/＆GT;
            ＆所述; /意图滤光器＆gt;
        ＆LT; /活性GT;
    ＆LT; /用途＆gt;
    ＆LT;使用-权限的Andr​​oid：名称=android.permission.INTERNET对/＆GT;
＆LT; /舱单＆GT;
 

解决方案

我认为主要的问题是，你调用web.loadUrl（WEBURL）;此外，当savedInstanceState！= NULL

修改

尝试：

 如果（savedInstanceState == NULL）
{
  web.loadUrl（WEBURL）;
}
 

EDIT2 ：你还需要的onSaveInstanceState和onRestoreInstanceState覆盖

  @覆盖
保护无效的onSaveInstanceState（包outState）
{
super.onSaveInstanceState（outState）;
web.saveState（outState）;
}

@覆盖
保护无效onRestoreInstanceState（包savedInstanceState）
{
super.onRestoreInstanceState（savedInstanceState）;
web.restoreState（savedInstanceState）;
}
 

When I rotate my screen, the WebView reloads the whole page. I can't have this since some of my content contains dynamic/random material. Currently when rotated the screen reloads the original URL from the loadUrl() method.

Any idea what's wrong with my code?

MainActivity.java

package com.mark.myapp;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.webkit.WebView;
import android.webkit.WebViewClient;

public class MainActivity extends Activity {

    WebView web;
    String webURL = "http://www.google.co.uk/";

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        if (savedInstanceState != null)
            ((WebView)findViewById(R.id.web)).restoreState(savedInstanceState);

        web = (WebView) findViewById(R.id.web);
        web.getSettings().setJavaScriptEnabled(true);
        web.loadUrl(webURL);
        web.setPadding(0, 0, 0, 0);
        web.getSettings().setLoadWithOverviewMode(true);
        web.getSettings().setUseWideViewPort(true);
        web.getSettings().setSupportZoom(true);
        web.getSettings().setBuiltInZoomControls(true);

        web.setWebViewClient(new HelloWebViewClient());
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

    private class HelloWebViewClient extends WebViewClient {
        public boolean shouldOverrideUrlLoading(WebView web, String url) {
            web.loadUrl(url);
            return true;
        }
    }

    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if ((keyCode == KeyEvent.KEYCODE_BACK) && web.canGoBack()) {
            web.goBack();
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }

}

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.mark.myapp"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"

            android:configChanges="orientation|keyboardHidden">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
    <uses-permission android:name="android.permission.INTERNET"/>
</manifest>

I think the main problem is that you call web.loadUrl(webURL); also when savedInstanceState != null

EDIT

Try:

if (savedInstanceState == null)
{
  web.loadUrl(webURL);
}

EDIT2: You also need the onSaveInstanceState and onRestoreInstanceState override.

@Override
protected void onSaveInstanceState(Bundle outState )
{
super.onSaveInstanceState(outState);
web.saveState(outState);
}

@Override
protected void onRestoreInstanceState(Bundle savedInstanceState)
{
super.onRestoreInstanceState(savedInstanceState);
web.restoreState(savedInstanceState);
}