Android 更新现有对象的布局参数

我使用setLayoutParams为自定义视图的对象设置布局参数，如下所示：

MyCustomView object = new ObjectView(getApplicationContext());
                object.setLayoutParams(new ViewGroup.LayoutParams(
                        ViewGroup.LayoutParams.WRAP_CONTENT,
                        ViewGroup.LayoutParams.WRAP_CONTENT));

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如何在运行时以编程方式更改或更新同一对象的此LayoutParams？

您可以稍后动态重置或更改参数，如以下代码所示：

MyCustomView object = new ObjectView(getApplicationContext());
object.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));



public void manageViewParams(int width, int height)
{
   ViewGroup.LayoutParams layoutParam = object.getLayoutParams();
   layoutParam.width = width;
   layoutParam.height = height;

   //first check without this below line, it should work. If not then you need to write below line
   object.setLayoutParams(layoutParam);
}

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你到底想做什么？你能详细说明一下吗？？？@Vickyexpert我想再次重置宽度和高度（覆盖原始设置）中没有设置高度或宽度layoutParam@Hussein你必须投下它。例如

ViewGroup.MarginLayoutParams

。这取决于您使用的视图组。如果使用的是LinearLayout，则可以将其强制转换为

LinearLayout.LayoutParams

。这将导致程序崩溃，因为该对象已具有LayoutParams，并且我不想创建新对象

int yourHeight = 200;
int yourWidth = 200;

MyCustomView object = new ObjectView(getApplicationContext());
//this
object.setLayoutParams(new ViewGroup.LayoutParams(
                        yourHeight,
                        yourWidth));
//or this
ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(
                        yourHeight,
                        yourWidth));
object.setLayoutParams(layoutParam);