如何以编程方式更改布局的可见性

问题描述

有一种方法可以更改View的可见性，但是如何以编程方式更改XML中定义的布局的可见性?如何获取布局对象?

There is the way to change visibility of View, but how can I change programmatically visibility of layout defined in XML? How to get layout object?

<LinearLayout
    android:id="@+id/contacts_type"
    android:orientation="horizontal"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:visibility="gone">
</LinearLayout>

推荐答案

看看View.setVisibility(View.GONE / View.VISIBLE / View.INVISIBLE).

从 API文档:

   因为:API级别1

    Since: API Level 1

    设置此视图的启用状态.
   相关的XML属性:android:visibility

    Set the enabled state of this view.
    Related XML Attributes: android:visibility

参数:
visibility   可见，不可见或消失之一.

Parameters:
visibility     One of VISIBLE, INVISIBLE, or GONE.

请注意， LinearLayout 是 ViewGroup 反过来又是 View .也就是说，您最好打个电话，例如myLinearLayout.setVisibility(View.VISIBLE).

这很有道理.如果您有AWT/Swing的任何经验，您会从Container和Component之间的关系中认识到它. (Container 是 Component.)

This makes sense. If you have any experience with AWT/Swing, you'll recognize it from the relation between Container and Component. (A Container is a Component.)

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