/** Define hook configuration */
public class AndHookConfig {
    /** Hook Activity's onStart() method */
    @HookHelper.Hook(clazz = Activity.class)
    private static void onStart(Activity activity) {
        Log.d(AndTest.LOG_TAG, "onStart: HookedActivity::onStart start, this is " + activity.getClass());
        HookHelper.invokeVoidOrigin(activity);// invoke the origin method
        Log.d(AndTest.LOG_TAG, "onStart: HookedActivity::onStart end, this is " + activity.getClass());
    }
}

public class MainApplication extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        // Make sure AndHook's native library is loaded first.
        AndHook.ensureNativeLibraryLoaded(null);
        // Then apply hook configuration before target method running.
        HookHelper.applyHooks(AndHookConfig.class);
    }
}

public class MainActivity extends Activity {
    @Override
    protected void onStart() {
        Log.i(TAG, "MainActivity.super::onStart: start");
        super.onStart();// the method which is hooked
        Log.i(TAG, "MainActivity.super::onStart: end");
    }
}

// After MainActivity launched, you will be able to see log in logcat like:
// AndHook_Test: MainActivity.super::onStart: start
// AndHook_Test: onStart: HookedActivity::onStart start, this is class andhook.test.ui.MainActivity
// AndHook_Test: onStart: HookedActivity::onStart end, this is class andhook.test.ui.MainActivity
// AndHook_Test: MainActivity.super::onStart: end