设备环境：Android O ， android:sharedUserId="android.uid.system" 进程
错误： android.view.InflateException: Binary XML file line #24: Error inflating class android.webkit.WebView。。。。
。。。For security reasons, WebView is not allowed in privileged processes
网上的解决办法：
1. manifest的Application下面添加：
<meta-data android:name="android.webkit.WebView.EnableSafeBrowsing"
android:value="true"/>
验证结果：然并卵2. 在app文件下的build.gradle里面的appcompat版本如果是1.1.0的话webview会出错误，改成1.0.2
验证结果：然并卵3. （效果同第4点）application属性增加： android:usesCleartextTraffic="true"
验证结果：然并卵 (非 android:sharedUserId="android.uid.system" 进程 有效)4. （效果同第3点） application属性增加：android:networkSecurityConfig="@xml/network_security_config" res/xml/下面放置的network_security_config.xml 内容：
<?xml version="1.0" encoding="utf-8"?> <network-security-config> <base-config cleartextTrafficPermitted="true" /> </network-security-config>验证结果：然并卵 (非 android:sharedUserId="android.uid.system" 进程 有效)5. 终极有效的解决方法： 在Application启动的时候先调用该方法 (同时要加上第3点或者第4点)
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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(TAG,"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(TAG,"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(TAG,"Hook success!");
} else {
Log.i(TAG,"Hook failed!");
}
} catch (Throwable e) {
Log.w(TAG,e);
}
}