android - 在 android 屏幕上安装 recyclerview 项目

Question

我有麻烦了!我有这个 RecyclerView，我在其中使用 GridLayoutManager 来实现两列和几行。但这是我的问题:我在这个 RecyclerView 中最多有 8 个项目，我想根据屏幕尺寸调整它们

到目前为止我得到了这个:

使用这段代码:

        Rect rectangle = new Rect();
        Window window = ((Activity)context).getWindow();
        window.getDecorView().getWindowVisibleDisplayFrame(rectangle);
        int statusBarHeight = rectangle.top;
        int contentViewTop =
                window.findViewById(Window.ID_ANDROID_CONTENT).getTop();
        int titleBarHeight= contentViewTop - statusBarHeight;

        final TypedArray styledAttributes = getContext().getTheme().obtainStyledAttributes(
                new int[] { android.R.attr.actionBarSize });
        int mActionBarSize = (int) styledAttributes.getDimension(0, 0);
        styledAttributes.recycle();

        int softButtonsHeight = 0;

        DisplayMetrics metrics = new DisplayMetrics();
        ((Activity)context).getWindowManager().getDefaultDisplay().getMetrics(metrics);

        DisplayMetrics realMetrics = new DisplayMetrics();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            ((Activity)context).getWindowManager().getDefaultDisplay().getRealMetrics(realMetrics);

            if(realMetrics.heightPixels > metrics.heightPixels){
                softButtonsHeight = realMetrics.heightPixels - metrics.heightPixels;
            }
        }

        ImageView img_Logo = (ImageView)rootView.findViewById(R.id.img_logo_detalhe);

        float logoHeight = 0;
        //convertendo na mão tamanho do sponsor
        if(img_Logo.getVisibility() != GONE) {
            logoHeight = 100 * context.getResources().getDisplayMetrics().density;
        }

        double sizeInPx = (metrics.heightPixels - titleBarHeight - softButtonsHeight - mActionBarSize - logoHeight) / Math.round(list.size() / 2D);

        itensAdapter = new OptionItensAdapter(context, list, (int)sizeInPx);
        rvOptions.setAdapter(itensAdapter);

在我的 onBindViewHolder 处的 OptionItensAdapter 构造函数中:

RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, sizeInPx);
        holder.imageButton.setLayoutParams(params);

你有什么想法可以让我实现这个目标吗？提前致谢。

Answer 1

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = LayoutInflater
            .from(parent.getContext())
            .inflate(R.layout.item_list, null);

    int height = parent.getMeasuredHeight() / 4;
    int width = parent.getMeasuredWidth();

    view.setLayoutParams(new RecyclerView.LayoutParams(width, height));

    return new ViewHolder(view);
}