kotlin TextView以滚动两个方向

Question

我正在尝试在Kotlin中设置一个文本视图，以在两个方向上滚动（即水平和垂直）。

也就是说，我希望长行跑出右侧，用户应该能够向右滚动/拖动以查看。 此外，当有足够的文本可以从视图的底部流出时，它们也应该能够向下滚动。因此，基本上是一个小的“窗口查看器”，如果您可以使用较大的文档。

（我这样做是因为显示的文本是特定/严格的格式，并且“窗口”的大小有限）。

我发现了一些问题，但是，到目前为止，我发现的所有建议都没有奏效。

到目前为止，这是我所拥有的：

activity_main.xml

  <?xml version="1.0" encoding="utf-8"?>
  <androidx.constraintlayout.widget.ConstraintLayout 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"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      tools:context=".MainActivity">

      <TextView
          android:id="@+id/textView"
          android:layout_width="200dp"
          android:layout_height="200dp"
          android:layout_marginStart="105dp"
          android:layout_marginTop="90dp"
          android:scrollbars="horizontal|vertical"
          android:scrollHorizontally="true"
          android:text="This is line 1 and should scroll off the view to the right. \n \n This is line 2 and again should scroll off the view tot he right. \n \n This is line 3.\n and these \n lines should \n scroll off\n the bottom \n of the view\n when it\n gets long\n enough to \n pass the\n bottom of\n the view\n "
          app:layout_constraintStart_toStartOf="parent"
          app:layout_constraintTop_toTopOf="parent" />
  </androidx.constraintlayout.widget.ConstraintLayout>

MainAttivity

  import androidx.appcompat.app.AppCompatActivity
  import android.os.Bundle
  import android.text.method.ScrollingMovementMethod
  import android.util.Log
  import android.widget.TextView
  import androidx.recyclerview.widget.GridLayoutManager
  import androidx.recyclerview.widget.RecyclerView

  class MainActivity : AppCompatActivity() {
      override fun onCreate(savedInstanceState: Bundle?) {
          super.onCreate(savedInstanceState)
          setContentView(R.layout.activity_main)

          var txtVw = findViewById<TextView>(R.id.textView )
          txtVw.movementMethod = ScrollingMovementMethod()

      }
  }

是否有一种简单的方法可以做到这一点？还是我必须开始使用水平滚动视图和滚动浏览视图？

最终以thsi：

滚动/向上滚动。但是，您会看到前2行包裹。 如果我使用“单行”属性，那么整个TextView当然会排1行，因此这无济于事。

我想念什么？ 阅读有关文本视图的信息，但找不到在水平滚动方面有用的内容。

Answer 1

AS Cheticamp 提到，您应该在textView air hibyontalscrollview yrizontalsCrollview 。如果您想以编程方式执行此操作：

  class MainActivity : AppCompatActivity() {
      override fun onCreate(savedInstanceState: Bundle?) {
          super.onCreate(savedInstanceState)
          setContentView(R.layout.activity_main)

          val myHorizontalScrollView = HorizontalScrollView(this)
          var txtVw = findViewById<TextView>(R.id.textView)
          //since your textview already has a parent (the constraintlayout from the main_activity.xml file) you have to remove the widget from is parent first, before you add it in another layout.
          (txtVw.parent as ConstraintLayout).removeView(txtVw)
          myHorizontalScrollView.addView(txtVw)
          // before doing this you must give an id to your ConstraintLayout
          findViewById<ConstraintLayout>(R.id.myConstraint).addView(myHorizontalScrollView)


      }
  }

或者您可以修改您的activity_main.xml文件以使其看起来像这样：

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 
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"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  tools:context=".MainActivity">

  <HorizontalScrollView
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

      <TextView
          android:id="@+id/textView"
          android:layout_width="200dp"
          android:layout_height="200dp"
          android:layout_marginStart="105dp"
          android:layout_marginTop="90dp"
          android:scrollbars="horizontal|vertical"
          android:scrollHorizontally="true"
          android:text="This is line 1 and should scroll off the view to the 
          right. \n \n This is line 2 and again should scroll off the view     
          to the right. \n \n This is line 3.\n and these \n lines should \n 
          scroll off\n the bottom \n of the view\n when it\n gets long\n 
          enough to \n pass the\n bottom of\n the view\n "
          app:layout_constraintStart_toStartOf="parent"
          app:layout_constraintTop_toTopOf="parent" />
  
  </HorizontalScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>