把GridLayout子控件放入map中，for循环获取控件并修改layoutParams参数

可以使用以下代码将GridLayout子控件放入Map中，并使用for循环获取控件并修改LayoutParams参数：

// 将GridLayout子控件放入Map中
GridLayout gridLayout = (GridLayout) findViewById(R.id.grid_layout);
Map<String, View> viewMap = new HashMap<>();
for (int i = 0; i < gridLayout.getChildCount(); i++) {
    View child = gridLayout.getChildAt(i);
    viewMap.put("child" + i, child);
}

// for循环获取控件并修改LayoutParams参数
for (int i = 0; i < gridLayout.getChildCount(); i++) {
    View child = viewMap.get("child" + i);
    if (child != null) {
        GridLayout.LayoutParams layoutParams = (GridLayout.LayoutParams) child.getLayoutParams();
        layoutParams.width = 100;
        layoutParams.height = 100;
        layoutParams.setGravity(Gravity.CENTER);
        layoutParams.columnSpec = GridLayout.spec(GridLayout.UNDEFINED, 1f);
        layoutParams.rowSpec = GridLayout.spec(GridLayout.UNDEFINED, 1f);
        child.setLayoutParams(layoutParams);
    }
}

首先，我们将GridLayout子控件放入Map中，键值为"child" + i，值为子控件对象。然后，我们使用for循环遍历GridLayout的所有子控件，通过键值获取子控件对象，并修改其LayoutParams参数。以上代码中，我们将所有子控件的宽高都设置为了100，重心设置为居中，列和行都设置为了均分。您可以根据实际需求修改这些属性的值。