遵循步骤:

private val binding: FragmentBinding 由viewBinding (FragmentBinding:绑定) 确保在“onViewCreated(view: view, savedInstanceState: Bundle?)”中执行以下操作 Val binding2 = binding.root.include_layout_id

例如val binding2 = binding.root.tool_bar_layout

现在访问你的include布局，视图。如。

binding2.textView.text = "your text"

在包含布局中，你必须创建一个容器布局，并在这里放置id。

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:id="@+id/example"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintTop_toTopOf="parent">
    </androidx.constraintlayout.widget.ConstraintLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

假设我在activity_main.xml文件中包含了如下布局:

<include
    android:id="@+id/ll_layout1"
    layout="@layout/layout1"
    android:visibility="gone" />

假设我想改变它的可见性。我可以这样做:

activityMainBinding.llLayout1.root.visibility = View.VISIBLE

遵循步骤:

private val binding: FragmentBinding 由viewBinding (FragmentBinding:绑定) 确保在“onViewCreated(view: view, savedInstanceState: Bundle?)”中执行以下操作 Val binding2 = binding.root.include_layout_id

例如val binding2 = binding.root.tool_bar_layout

现在访问你的include布局，视图。如。

binding2.textView.text = "your text"

如果你想绑定包含布局，

活动

YourMainLayoutBinding mainLayoutBinding = MainLayoutBinding.inflate(getLayoutInflater);

View view = mainLayoutBinding.getRoot();

YourIncludedLayoutBinding includedLayoutBinding = YourIncludedLayoutBinding.bind(View);

的片段

YourMainLayoutBinding mainLayoutBinding = MainLayoutBinding.inflate(inflater,container,false);

View view = mainLayoutBinding.getRoot();

YourIncludedLayoutBinding includedLayoutBinding = YourIncludedLayoutBinding.bind(View);

确保你的主布局绑定父根是LinearLayout， incledlayoutbinding父布局也是线性布局

在下列情况下:

包含与泛型布局(不是合并节点)，我们需要分配ID到包含的部分，这样在绑定中我们就可以访问包含的子部分

<include
    android:id="@+id/your_id"
    layout="@layout/some_layout" />

在你的活动代码中这样做:

private lateinit var exampleBinding: ActivityExampleBinding  //activity_example.xml layout

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    exampleBinding = ActivityExampleBinding.inflate(layoutInflater)
    setContentView(exampleBinding.root)
    //we will be able to access included layouts view like this
    val includedView: View = exampleBinding.yourId.idOfIncludedView
//[...]
}

在外部布局中包含合并块。我们不能添加ID，因为merge block不是视图。 假设我们有这样一个永恒的合并布局(merge_layout.xm):

<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    tools:showIn="@layout/activity_example">

    <TextView
        android:id="@+id/some_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World" />
</merge>

要正确绑定这样的合并布局，我们需要:

在你的活动代码中:

private lateinit var exampleBinding: ActivityExampleBinding  //activity_example.xml layout
private lateinit var mergeBinding: MergeLayoutBinding  //merge_layout.xml layout

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    exampleBinding = ActivityExampleBinding.inflate(layoutInflater)
    //we need to bind the root layout with our binder for external layout
    mergeBinding = MergeLayoutBinding.bind(exampleBinding.root)
    setContentView(exampleBinding.root)
    //we will be able to access included in merge layout views like this
    val mergedView: View = mergeBinding.someView
//[...]
}