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ご存じのとおり、JELLY_BEAN 以来、JavasScriptInterface@JavascriptInterfaceを介してアクセス可能なすべてのメソッドで注釈を付ける必要があります。

私はいくつかの JavaScript を注入しながらそれを行っており、API>JELLY_BEAN_MR1 を使用して端末で正常に動作しています。それにもかかわらず、古いデバイスには NoClassDefFoundError があります。

これは私のコードです：

wvPromo.setWebViewClient(new WebViewClient() {
        @Override
        public void onPageFinished(WebView view, String url) {
            if(mDialog!=null && mDialog.isShowing()) mDialog.dismiss();
            view.loadUrl("javascript:(function() { "
                    + "var myEl = document.getElementById('mw-mf-main-menu-button');   "
                    + "myEl.addEventListener('click', function(){window.JSInterface.share();}, false);"
                    + "})();");
            view.addJavascriptInterface(this, "JSInterface");           
        }
    });.
...

@JavascriptInterface
public void share() {
    Log.i(getClass().getSimpleName(), "Share button");
    Intent i = Utils.shareContentIntent(this, "word", "Title");
    startActivity(i);
}

これは例外です:

01-30 12:42:41.750: E/AndroidRuntime(13662): FATAL EXCEPTION: main
01-30 12:42:41.750: E/AndroidRuntime(13662): java.lang.RuntimeException: Unable to start activity 
ComponentInfo{com.cleverox.flamencomovil/com.zonaapp.flamencomovil.PromotionActivity}: com.google.inject.internal.util.$ComputationException: java.lang.NoClassDefFoundError: android.webkit.JavascriptInterface
01-30 12:42:41.750: E/AndroidRuntime(13662):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at android.app.ActivityThread.access$1500(ActivityThread.java:117)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at android.os.Handler.dispatchMessage(Handler.java:99)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at android.os.Looper.loop(Looper.java:130)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at android.app.ActivityThread.main(ActivityThread.java:3691)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at java.lang.reflect.Method.invokeNative(Native Method)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at java.lang.reflect.Method.invoke(Method.java:507)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:912)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:670)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at dalvik.system.NativeStart.main(Native Method)
01-30 12:42:41.750: E/AndroidRuntime(13662): Caused by: com.google.inject.internal.util.$ComputationException: java.lang.NoClassDefFoundError: android.webkit.JavascriptInterface
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.internal.util.$MapMaker$StrategyImpl.compute(MapMaker.java:553)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.internal.util.$MapMaker$StrategyImpl.compute(MapMaker.java:419)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.internal.util.$CustomConcurrentHashMap$ComputingImpl.get(CustomConcurrentHashMap.java:2041)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.internal.FailableCache.get(FailableCache.java:50)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.internal.MembersInjectorStore.get(MembersInjectorStore.java:65)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.internal.InjectorImpl.getMembersInjector(InjectorImpl.java:950)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.internal.InjectorImpl.getMembersInjector(InjectorImpl.java:957)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.internal.InjectorImpl.injectMembers(InjectorImpl.java:943)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at roboguice.inject.ContextScopedRoboInjector.injectMembersWithoutViews(ContextScopedRoboInjector.java:243)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.zonaapp.utils.roboguice.RoboSherlockActivity.onCreate(RoboSherlockActivity.java:60)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.zonaapp.flamencomovil.PromotionActivity.onCreate(PromotionActivity.java:40)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1050)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
01-30 12:42:41.750: E/AndroidRuntime(13662):    ... 11 more
01-30 12:42:41.750: E/AndroidRuntime(13662): Caused by: java.lang.NoClassDefFoundError: android.webkit.JavascriptInterface
01-30 12:42:41.750: E/AndroidRuntime(13662):    at java.lang.reflect.Method.getDeclaredAnnotations(Native Method)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at java.lang.reflect.Method.getDeclaredAnnotations(Method.java:262)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at java.lang.reflect.AccessibleObject.getAnnotations(AccessibleObject.java:188)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at java.lang.reflect.AccessibleObject.getAnnotation(AccessibleObject.java:196)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.spi.InjectionPoint.getAtInject(InjectionPoint.java:466)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.spi.InjectionPoint.getInjectionPoints(InjectionPoint.java:664)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.spi.InjectionPoint.forInstanceMethodsAndFields(InjectionPoint.java:356)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.internal.MembersInjectorStore.createWithListeners(MembersInjectorStore.java:90)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.internal.MembersInjectorStore.access$000(MembersInjectorStore.java:34)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.internal.MembersInjectorStore$1.create(MembersInjectorStore.java:42)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.internal.MembersInjectorStore$1.create(MembersInjectorStore.java:39)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.internal.FailableCache$1.apply(FailableCache.java:39)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at com.google.inject.internal.util.$MapMaker$StrategyImpl.compute(MapMaker.java:549)
01-30 12:42:41.750: E/AndroidRuntime(13662):    ... 23 more
01-30 12:42:41.750: E/AndroidRuntime(13662): Caused by: java.lang.ClassNotFoundException: android.webkit.JavascriptInterface in loader dalvik.system.PathClassLoader[/system/framework/com.google.android.maps.jar:/data/app/com.cleverox.flamencomovil-1.apk]
01-30 12:42:41.750: E/AndroidRuntime(13662):    at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
01-30 12:42:41.750: E/AndroidRuntime(13662):    at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
01-30 12:42:41.750: E/AndroidRuntime(13662):    ... 36 more

背景を透明にする方法を教えてください。

私はCSSにかなり慣れていないので、コースでこれを行う必要があります。この問題に遭遇しました。背景を唯一の透明なビットにし、残りの div を透明にする方法がわかりません。このリンクをチェックしてください:

http://jsfiddle.net/xiiJaMiiE/LfWBn/

html,body {
background-color:orange;
background-size:auto;
opacity:0.6;
z-index:1;
}

バーがすべてずれていることは理解していますが、サファリで表示すると元に戻ります。

前もって感謝します！

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