如何正確地擴展WebView？

我使用的Scroll webview horizontally inside a ViewPager 如何正確地擴展WebView？

它的解決方案看起來非常有用的，我是在XML參考ExtendedWebView中的.class

<ExtendedWebView 
    android:id="@+id/webview" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
/>

例如ExtendedWebView，

LayoutInflater mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
layout = mInflater.inflate(R.layout.lay1, null); 
ExtendedWebView webView = (ExtendedWebView)layout.findViewById(R.id.webview);

，但我得到了「錯誤膨脹類ExtendedWebView'，所以任何人都可以幫助我給我一些想法，謝謝你的時間和經驗！

繼承人是整個堆棧跟蹤，

12-27 22:14:44.263: E/AndroidRuntime(10824): FATAL EXCEPTION: main 
12-27 22:14:44.263: E/AndroidRuntime(10824): android.view.InflateException: Binary XML file line #7: Error inflating class com.vv_package_name.ExtendedWebView 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:576) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.view.LayoutInflater.rInflate(LayoutInflater.java:618) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.view.LayoutInflater.inflate(LayoutInflater.java:407) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.view.LayoutInflater.inflate(LayoutInflater.java:320) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.view.LayoutInflater.inflate(LayoutInflater.java:276) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at com.vv_package_name.vv_main$ExtendedPagerAdapter.instantiateItem(vv_main.java:135) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.support.v4.view.PagerAdapter.instantiateItem(PagerAdapter.java:110) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:801) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.support.v4.view.ViewPager.populate(ViewPager.java:930) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.support.v4.view.ViewPager.populate(ViewPager.java:881) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1366) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.view.View.measure(View.java:8226) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.widget.LinearLayout.measureVertical(LinearLayout.java:526) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.widget.LinearLayout.onMeasure(LinearLayout.java:304) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.view.View.measure(View.java:8226) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3132) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.widget.FrameLayout.onMeasure(FrameLayout.java:245) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.view.View.measure(View.java:8226) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.widget.LinearLayout.measureVertical(LinearLayout.java:526) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.widget.LinearLayout.onMeasure(LinearLayout.java:304) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.view.View.measure(View.java:8226) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3132) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.widget.FrameLayout.onMeasure(FrameLayout.java:245) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.view.View.measure(View.java:8226) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.view.ViewRoot.performTraversals(ViewRoot.java:801) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.view.ViewRoot.handleMessage(ViewRoot.java:1727) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.os.Handler.dispatchMessage(Handler.java:99) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.os.Looper.loop(Looper.java:123) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.app.ActivityThread.main(ActivityThread.java:4627) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at java.lang.reflect.Method.invokeNative(Native Method) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at java.lang.reflect.Method.invoke(Method.java:521) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at dalvik.system.NativeStart.main(Native Method) 
12-27 22:14:44.263: E/AndroidRuntime(10824): Caused by: java.lang.ClassNotFoundException: com.vv_package_name.ExtendedWebView in loader dalvik.system.PathClassLoader[/data/app/com.vv_package_name-2.apk] 
12-27 22:14:44.263: E/AndroidRuntime(10824): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at java.lang.ClassLoader.loadClass(ClassLoader.java:573) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at java.lang.ClassLoader.loadClass(ClassLoader.java:532) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.view.LayoutInflater.createView(LayoutInflater.java:466) 
12-27 22:14:44.263: E/AndroidRuntime(10824): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:565) 
12-27 22:14:44.263: E/AndroidRuntime(10824): ... 33 more

如果使用的WebView代替ExtendedWebView，我的代碼工作正常:)

來源

2012-12-27 user1928432

您需要提供一個完整的參考類，包括包。

例如，

<org.example.myapp.ExtendedWebView 
    android:id="@+id/webview" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
/>

來源

2012-12-27 13:15:01

感謝您的重播，但它劇照不工作，' user1928432

我想你必須粘貼整個堆棧跟蹤和日誌才能獲得更多幫助。 –

對不起，我是個菜鳥，這是我的問題，我把這些擴展在主Activity類的WebView代碼在一個.class文件...它應該有一個獨立的進行保存.class文件... :)

public class ExtendedWebView extends WebView {

來源

2012-12-28 09:58:28 user1928432

如果你確實希望它們在同一個類文件中，你可以使它成爲靜態的，並通過XML參考它：'' –

@Tom Leese，感謝您的關注和經驗，真的幫助我.. – user1928432

-1

這是如何爲我工作：

MainActivity.java：

package com.example.test; 

import android.os.Bundle; 
import android.app.Activity; 
import android.view.Menu; 
import android.webkit.WebView; 

public class MainActivity extends Activity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     WebView webView = (WebView)findViewById(R.id.webView); 
     webView.loadUrl("file:///android_asset/www/index.html");   
    } 


    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.main, menu); 
     return true; 
    } 

}

activity_main.xml中：

<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" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    tools:context=".MainActivity" > 

    <WebView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:id="@+id/webView" /> 

</RelativeLayout>

的index.html：

Hello world 
<input type=text name=test value="some value" /> 
<button />

來源

2013-06-30 23:15:29 YumYumYum

在我的XML使用該解決對我來說：

<view 
    class="com.example.MainActivity$MyWebView" 
    android:id="@+id/web_view" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"/>

來源

2013-09-14 15:30:08

如何正確地擴展WebView？

回答

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