相对布局不工作设置页边距 [英] setting margins on relative layout doesnt work

问题描述

我用FragmentTransaction一个片段加入到一个的FrameLayout。我想动态改变的RelativeLayout由片段中的余量。然而，利润率不与RelativeLayout.layoutParams改变。我还用 setMargins（）并没有工作。

 公开查看onCreateView（LayoutInflater充气器，容器的ViewGroup，捆绑savedInstanceState）{        查看查看= inflater.inflate（R.layout.infocard，集装箱，FALSE）;        RelativeLayout的infoLayout =（RelativeLayout的）view.findViewById（R.id.info）;
        infoLayout.setOnClickListener（新EmptyClickListener（））;        最终诠释宽度= 250;
        最终诠释高= 320;
        INT LEFTMARGIN = 0;
        INT TOPMARGIN = 0;
        RelativeLayout.LayoutParams PARAMS =新RelativeLayout.LayoutParams（宽度，高度）;        如果（X  - 宽度小于0）{
            LEFTMARGIN = 0;
            的System.out.println（左边的+ LEFTMARGIN）;
        }
        其他{
            LEFTMARGIN = X  - 宽度;
        }        如果（Y＆GT; = 450安培;＆安培; Y＆LT; = 480）{
            TOPMARGIN = Y  - 高度;
        }        params.leftMargin = LEFTMARGIN;
        params.topMargin = TOPMARGIN;        infoLayout.setLayoutParams（PARAMS）;
 

解决方案

尝试使用

  FrameLayout.LayoutParams
 

而不是

  RelativeLayout.LayoutParams
 

布局预期PARAMS类型为从父容器的类型，而不是要设置他们在视图类型

I used a FragmentTransaction to add a Fragment into a FrameLayout. I want to dynamically change the margin of the RelativeLayout used by the Fragment. However, the margins are not changing with RelativeLayout.layoutParams. I also used setMargins() and it didnt work.

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.infocard, container, false);

        RelativeLayout infoLayout = (RelativeLayout) view.findViewById(R.id.info);
        infoLayout.setOnClickListener(new EmptyClickListener());

        final int width = 250;
        final int height = 320;
        int leftMargin = 0;
        int topMargin = 0;
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(width, height);

        if (x - width < 0) {
            leftMargin = 0;
            System.out.println("left " + leftMargin);
        }
        else {
            leftMargin = x - width;
        }

        if (y >= 450 && y <= 480) {
            topMargin = y - height;
        }

        params.leftMargin = leftMargin;
        params.topMargin = topMargin;

        infoLayout.setLayoutParams(params);

解决方案

Try using

FrameLayout.LayoutParams

instead of

RelativeLayout.LayoutParams

Layouts expect the params type to be the type from their parent container rather than the View type that you are setting them on

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