import org.xutils.view.annotation.ContentView; //导入依赖的package包/类
@Override
public void inject(Activity activity) {
    //获取Activity的ContentView的注解
    Class<?> handlerType = activity.getClass();
    try {
        ContentView contentView = findContentView(handlerType);
        if (contentView != null) {
            int viewId = contentView.value();
            if (viewId > 0) {
                Method setContentViewMethod = handlerType.getMethod("setContentView", int.class);
                setContentViewMethod.invoke(activity, viewId);
            }
        }
    } catch (Throwable ex) {
        LogUtil.e(ex.getMessage(), ex);
    }

    injectObject(activity, handlerType, new ViewFinder(activity));
}
 

import org.xutils.view.annotation.ContentView; //导入依赖的package包/类
/**
 * 从父类获取注解View
 */
private static ContentView findContentView(Class<?> thisCls) {
    if (thisCls == null || IGNORED.contains(thisCls)) {
        return null;
    }
    ContentView contentView = thisCls.getAnnotation(ContentView.class);
    if (contentView == null) {
        return findContentView(thisCls.getSuperclass());
    }
    return contentView;
}