把GridLayout子控件放入map中，动态获取控件并修改layoutParams参数

可以使用以下代码将GridLayout子控件放入Map中，并动态获取控件并修改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);
}

// 获取指定子控件并修改LayoutParams参数
View child = viewMap.get("child1");
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，我们可以通过键值获取指定的子控件对象，并修改其LayoutParams参数。以上代码中，我们获取了键值为"child1"的子控件，并将其宽高都设置为了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。