inflate 属性失效

获得 LayoutInflater 实例的三种方式

1.LayoutInflater infalte=context.getSytemService(Context.LAYOUT_INFLATE_SERVICE)；

2.LayoutInflater inflater = getLayoutInflater(); //调用Activity的getLayoutInflater()

3.LayoutInflater flater = LayoutInflater.from(this);

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
        view = inflater.inflate(R.layout.layout_menu, null);//正确

        view = inflater.inflate(R.layout.layout_menu, container, false);//正确
        view = View.inflate(getActivity(), R.layout.layout_menu, null);//正确
       view = LayoutInflater.from(getActivity()).inflate(R.layout.layout_menu, null);//正确,跟参数LayoutInflater inflater一样


      view = inflater.inflate(R.layout.layout_menu, container);//错误
      view = inflater.inflate(R.layout.layout_menu, container, true);//错误
      view = LayoutInflater.from(getActivity()).inflate(R.layout.layout_menu, container);//错误

        return view;
}

ViewGroup.LayoutParams仅有width和height2个属性，也就是说会忽略掉inflate出来的xml的根layout的除了width和height以外的其他所有属性

所以，如果要给根layout设置margin，可以在这个根layout外再放一个RelativeLayout(使他不再处于根位置)

或者换成padding去解决，因为padding不是LayoutParams中的属性

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