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我需要在 RelativeLayout 的中心放置一个网格，但我不想使用 Gravity 只是因为我需要使用 leftMargin 和 topMargin 将其放在特定位置。

网格是使用
我尝试使用此代码的两个 LinearLayout 制作的，但我在屏幕的左上角看到了网格：

RelativeLayout fl = new RelativeLayout(this);

    RelativeLayout.LayoutParams flp = new RelativeLayout.LayoutParams(
            RelativeLayout.LayoutParams.MATCH_PARENT, 
            RelativeLayout.LayoutParams.MATCH_PARENT);

    fl.setLayoutParams(flp);
    fl.setBackgroundResource(R.drawable.background);

    //Linear Layout to contain grid rows
    LinearLayout grid_layout = new LinearLayout(this);

    LinearLayout.LayoutParams llp = new LinearLayout.LayoutParams(
            LinearLayout.LayoutParams.WRAP_CONTENT, 
            LinearLayout.LayoutParams.WRAP_CONTENT);

    llp.leftMargin = (int)Util.convertDpToPixel(200, this);
    llp.topMargin = (int)Util.convertDpToPixel(200, this);

    //Set Params
    grid_layout.setOrientation(LinearLayout.VERTICAL);
    grid_layout.setId(12);
    fl.addView(grid_layout, llp);

    Log.d("Display", "" + grid_layout.getHeight());

    //LinearLayout(s) ROWS
    for (int i = 0; i < 4; i++)
    {
        LinearLayout ll = new LinearLayout(this);

        llp = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT, 
                LinearLayout.LayoutParams.WRAP_CONTENT);

        ll.setLayoutParams(llp);
        grid_layout.addView(ll);

        //Cells
        for (int j = 0; j < 4; j++) //Creating 4 cell blocks in a row
        {
            TextView tv = new TextView(this);
            tv.setBackgroundResource(R.drawable.cell_shape);
            tv.setHeight((int)Util.convertDpToPixel(42, this));
            tv.setWidth((int)Util.convertDpToPixel(42, this));

            ll.addView(tv);

            grid[i][j] = new CellBlock(grid, i, j, tv, null); //Building the game grid
        }
    }

似乎这两行：

llp.leftMargin = (int)Util.convertDpToPixel(200, this);
llp.topMargin = (int)Util.convertDpToPixel(200, this);

不工作！为什么一直把网格放在左上角？

谢谢

4

1 回答 1

0

你必须使用

RelativeLayout.LayoutParams llp = new RelativeLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);
llp.setMargins((int)Util.convertDpToPixel(100, this), (int)Util.convertDpToPixel(200, this), (int)Util.convertDpToPixel(200, this), (int)Util.convertDpToPixel(200, this));

代替

LinearLayout.LayoutParams llp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);
llp.leftMargin = (int)Util.convertDpToPixel(200, this);
llp.topMargin = (int)Util.convertDpToPixel(200, this);

为您的相对布局“grid_layout”

于 2013-01-20T12:32:39.620 回答