系统级安卓App集成uni小程序sdk，异常闪退的问题处理

本文链接：https://blog.youkuaiyun.com/Sandroid_java/article/details/131379064

当安卓App配置为系统级应用时，可能会导致uni小程序因WebView问题闪退。为解决此问题，可以在Application的onCreate方法中添加hookWebView()方法，该方法通过反射机制调整WebView的初始化，从而避免找不到路径的错误。此解决方案适用于不同AndroidSDK版本。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

问题描述：

如果你的安卓App是系统级应用，比如在AndroidManifest.xml 里配置了

android:sharedUserId="android.uid.system"

打卡uni小程序可能会直接闪退，提示找不到路径之类的错误。这其实是webview引起的。

解决方法：

在Application的 onCreate 方法里，调用下面的方法即可。

public 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("hookWebView","sProviderInstance isn't null");
                return;
            }
            Method getProviderClassMethod;
            if (sdkInt > 22) {
                getProviderClassMethod = factoryClass.getDeclaredMethod("getProviderClass");
            } else if (sdkInt == 22) {
                getProviderClassMethod = factoryClass.getDeclaredMethod("getFactoryClass");
            } else {
                Log.i("hookWebView","Don't need to Hook WebView");
                return;
            }
            getProviderClassMethod.setAccessible(true);
            Class<?> factoryProviderClass = (Class<?>) getProviderClassMethod.invoke(factoryClass);
            Class<?> delegateClass = Class.forName("android.webkit.WebViewDelegate");
            Constructor<?> delegateConstructor = delegateClass.getDeclaredConstructor();
            delegateConstructor.setAccessible(true);
            if(sdkInt < 26){//低于Android O版本
                Constructor<?> providerConstructor = factoryProviderClass.getConstructor(delegateClass);
                if (providerConstructor != null) {
                    providerConstructor.setAccessible(true);
                    sProviderInstance = providerConstructor.newInstance(delegateConstructor.newInstance());
                }
            } else {
                Field chromiumMethodName = factoryClass.getDeclaredField("CHROMIUM_WEBVIEW_FACTORY_METHOD");
                chromiumMethodName.setAccessible(true);
                String chromiumMethodNameStr = (String)chromiumMethodName.get(null);
                if (chromiumMethodNameStr == null) {
                    chromiumMethodNameStr = "create";
                }
                Method staticFactory = factoryProviderClass.getMethod(chromiumMethodNameStr, delegateClass);
                if (staticFactory!=null){
                    sProviderInstance = staticFactory.invoke(null, delegateConstructor.newInstance());
                }
            }

            if (sProviderInstance != null){
                field.set("sProviderInstance", sProviderInstance);
                Log.i("hookWebView","Hook success!");
            } else {
                Log.i("hookWebView","Hook failed!");
            }
        } catch (Throwable e) {
            Log.w("hookWebView",e);
        }
    }