XIB自定义视图的整理

- (void)setAppInfo:(AppInfo *)appInfo {
    _appInfo = appInfo;
    _icon.image = appInfo.image;
    _label.text = appInfo.name;
}

+ (instancetype)appView {
    // appView要加载NIB文件，使用[[NSBundle mainBundle] loadNibNamed: owner: options:]
    return [[[NSBundle mainBundle] loadNibNamed:@"AppView" owner:nil options:nil] lastObject];
}

+ (instancetype)appViewWithAppInfo:(AppInfo *)appInfo {
    AppView *appView = [AppView appView];
    appView.appInfo = appInfo;
    return appView;
}