Android中系统应用对WebView的适配

Android 4.4 开始修改了浏览器的内核导致从5.0 开始，如果App为系统应用或者Root用户，将无法使用WebView进行加载网页的操作

错误日志如下：

java.lang.UnsupportedOperationException: For security reasons, WebView is not allowed in privileged processes

针对错误修改方法：

1，替换WebView  如果只支持简单的

2，可以尝试分离把引用系统权限的部分分离成独立的app进行独立维护

3, 如果是定制版系统可以修改FrameWork层，注释掉相应的异常

public static void hookWebView() {

        int sdkInt = Build.VERSION.SDK_INT;

        try {

            Class<?> factoryClass = Class.forName("android.webkit.WebViewFactory");

            Field field = factoryClass.getDeclaredField("sProviderInstance");

            field.setAccessible(true);

            Object sProviderInstance = field.get(null);

            if (sProviderInstance != null) {

                Log.i("thi","sProviderInstance isn't null");

                return;

            }

            Method getProviderClassMethod;

            if (sdkInt > 22) {

                getProviderClassMethod = factoryClass.getDeclaredMethod("getProviderClass");

            } else if (sdkInt == 22) {

                getProviderClassMethod = factoryClass.getDeclaredMethod("getFactoryClass");

            } else {

                return;

            }

            getProviderClassMethod.setAccessible(true);

            Class<?> providerClass = (Class<?>) getProviderClassMethod.invoke(factoryClass);

            Class<?> delegateClass = Class.forName("android.webkit.WebViewDelegate");

            Constructor<?> providerConstructor = providerClass.getConstructor(delegateClass);

            if (providerConstructor != null) {

                providerConstructor.setAccessible(true);

                Constructor<?> declaredConstructor = delegateClass.getDeclaredConstructor();

                declaredConstructor.setAccessible(true);

                sProviderInstance = providerConstructor.newInstance(declaredConstructor.newInstance());

                field.set("sProviderInstance", sProviderInstance);

            }

        } catch (Throwable e) {

            e.printStackTrace();

        }

    }