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[英]Android Context.startActivity(Intent) throws runtime exception
[英]I want to hook context.startActivity by using cglib, but got an exception
private void cghookMInstrumentation() throws Exception {
//get mInstrumentation
Class<?> activityThreadClass = Class.forName("android.app.ActivityThread");
Method currentActivityThread = activityThreadClass.getDeclaredMethod("currentActivityThread");
currentActivityThread.setAccessible(true);
Object sCurrentActivityThread = currentActivityThread.invoke(null);//ActivityThread instance
Method getInstrumentation = activityThreadClass.getDeclaredMethod("getInstrumentation");
getInstrumentation.setAccessible(true);
Instrumentation instrumentation = (Instrumentation) getInstrumentation.invoke(sCurrentActivityThread);//Instrumentation
Field mInstrumentationField = activityThreadClass.getDeclaredField("mInstrumentation");
mInstrumentationField.setAccessible(true);
Enhancer enHancer = new Enhancer();
CglibProxy cglibProxy = new CglibProxy();
enHancer.setSuperclass(instrumentation.getClass());
enHancer.setCallback(cglibProxy);
Instrumentation mInstrumentation = (Instrumentation) enHancer.create();
//replace Instrumentation
mInstrumentationField.set(instrumentation, mInstrumentation);
}
和例外:
Caused by: java.lang.UnsupportedOperationException: can't load this type of class file
at java.lang.ClassLoader.defineClass(ClassLoader.java:300)
at java.lang.reflect.Method.invoke(Native Method)
at net.sf.cglib.core.ReflectUtils.defineClass(ReflectUtils.java:384)
at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:219)
at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:145)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:117)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104)
at net.sf.cglib.proxy.Enhancer.<clinit>(Enhancer.java:69)
at cn.chx.hooklib.CgLibHookClickListener.cghookMInstrumentation(CgLibHookClickListener.java:52)
at cn.chx.hooklib.CgLibHookClickListener.onClick(CgLibHookClickListener.java:28)
at android.view.View.performClick(View.java:5198)
at android.view.View$PerformClick.run(View.java:21147)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
我想钩context.startActivity
ActivityThread -> currentActivityThread() -> mInstrumentation
我编写了一个扩展Instrumentation
的类并将其设置到mInstrumentationField
,它可以正常工作,但是我使用cglib遇到了这个异常;
我将不胜感激。
Cglib在Android上不起作用。 您试图做的事是不可能的。 您可以尝试使用Byte Buddy作为替代方案,其中包括适用于Android的类加载策略,从而可以在Android上创建代理。
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