一直试图用字符伙伴连接android但是我的目标有问题;那个目标是拦截onCreate,然后添加一个Log.d(TAG," Message") 所有活动都被创建了。
更新了导入
package he.herpa.autoloader;
import android.app.Application;
import android.content.Context;
import android.util.Log;
import net.bytebuddy.ByteBuddy;
import net.bytebuddy.ClassFileVersion;
import net.bytebuddy.android.AndroidClassLoadingStrategy;
import net.bytebuddy.implementation.MethodDelegation;
import net.bytebuddy.implementation.bind.annotation.SuperCall;
import net.bytebuddy.matcher.ElementMatchers;
import net.bytebuddy.utility.RandomString;
import java.io.File;
import java.io.IOException;
import java.util.concurrent.Callable;
public class App extends Application {
private static final String TAG = "TEST";
@Override
public void onCreate() {
super.onCreate();
ByteBuddy byteBuddy;
byteBuddy = new ByteBuddy(ClassFileVersion.JAVA_V6);
try {
File file = this.getDir(RandomString.make(), Context.MODE_PRIVATE);
if (!file.isDirectory()) {
throw new IOException("Not a directory: " + file);
}
try {
byteBuddy
.redefine(Activity.class)
.method(ElementMatchers.named("onCreate"))
.intercept(MethodDelegation.to(Interceptor.class))
.make()
.load(Activity.class.getClassLoader(), new AndroidClassLoadingStrategy(file));
} catch (Throwable e) {
Log.w(TAG, e);
return;
}
} catch (Throwable e) {
Log.w(TAG, e);
}
}
@Override
public void onTerminate() {
super.onTerminate();
}
public static class Interceptor {
public static Void intercept(@SuperCall Callable<Void> zuper) throws Exception {
Log.d("Test", "Should have placed a log in all onCreates");
return zuper.call();
}
}
第一个问题是似乎找不到类Activity。
修改 java.lang.IllegalArgumentException: Cannot locate the class file for class he.herpa.autoloader.Activity using ClassFileLocator.ForClassLoader
第二个问题是,我是否走上正轨?
答案 0 :(得分:2)
Byte Buddy不支持Android上的重新定义或重新定位。您只能在构建期间执行此操作,但Android的运行时不提供对Java字节代码的标准化访问。