AutoFitTextView/AutoFitTextViewSample/res/layout/activity_resize.xml at 17063dc087907009ebdef39d5dfefef8018b8466 · AndroidDeveloperLB/AutoFitTextView · GitHub

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<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=".DynamicResizeActivity">

  <EditText
    android:id="@+id/contentEditText" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="fill_horizontal" android:ems="10"
    android:hint="content" android:text="content text sample" app:layout_constraintTop_toTopOf="parent"/>

  <TextView
    android:id="@+id/maxLineCountTitleTextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginStart="4dp"
    android:gravity="center_vertical" android:text="max lines count:" app:layout_constraintBottom_toBottomOf="@id/minusLineCountButton"
    app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@id/contentEditText"/>

  <Button
    android:id="@+id/minusLineCountButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="-"
    app:layout_constraintStart_toEndOf="@id/maxLineCountTitleTextView" app:layout_constraintTop_toBottomOf="@id/contentEditText"/>

  <TextView
    android:id="@+id/linesCountTextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:paddingLeft="10dp" android:paddingRight="10dp"
    android:text="2" app:layout_constraintBottom_toBottomOf="@id/minusLineCountButton" app:layout_constraintStart_toEndOf="@id/minusLineCountButton"
    app:layout_constraintTop_toBottomOf="@id/contentEditText"/>


  <Button
    android:id="@+id/plusLineCountButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/contentEditText" android:text="+"
    app:layout_constraintStart_toEndOf="@id/linesCountTextView" app:layout_constraintTop_toBottomOf="@id/contentEditText"/>

  <TextView
    android:id="@+id/startTitleTextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginStart="4dp" android:text="start:"
    android:textSize="20dp" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@id/minusLineCountButton"/>

  <SeekBar
    android:id="@+id/startSeekBar" android:layout_width="0px" android:layout_height="wrap_content" android:layout_marginEnd="4dp" android:progress="0"
    app:layout_constraintBottom_toBottomOf="@id/startTitleTextView" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toEndOf="@id/startTitleTextView"
    app:layout_constraintTop_toBottomOf="@id/minusLineCountButton"/>

  <TextView
      android:id="@+id/topTitleTextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginStart="4dp" android:text="top:"
      android:textSize="20dp" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@id/startTitleTextView"/>

  <SeekBar
      android:id="@+id/topSeekBar" android:layout_width="0px" android:layout_height="wrap_content" android:layout_marginEnd="4dp" android:progress="0"
      app:layout_constraintBottom_toBottomOf="@id/topTitleTextView" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toEndOf="@id/topTitleTextView"
      app:layout_constraintTop_toBottomOf="@id/startTitleTextView"/>

  <TextView
      android:id="@+id/endTitleTextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginStart="4dp" android:text="end:"
      android:textSize="20dp" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@id/topTitleTextView"/>

  <SeekBar
      android:id="@+id/endSeekBar" android:layout_width="0px" android:layout_height="wrap_content" android:layout_marginEnd="4dp" android:progress="0"
      app:layout_constraintBottom_toBottomOf="@id/endTitleTextView" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toEndOf="@id/endTitleTextView"
      app:layout_constraintTop_toBottomOf="@id/topTitleTextView"/>

  <TextView
      android:id="@+id/bottomTitleTextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginStart="4dp" android:text="bottom:"
      android:textSize="20dp" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@id/endTitleTextView"/>

  <SeekBar
      android:id="@+id/bottomSeekBar" android:layout_width="0px" android:layout_height="wrap_content" android:layout_marginEnd="4dp" android:progress="0"
      app:layout_constraintBottom_toBottomOf="@id/bottomTitleTextView" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toEndOf="@id/bottomTitleTextView"
      app:layout_constraintTop_toBottomOf="@id/endTitleTextView"/>

  <androidx.constraintlayout.widget.ConstraintLayout
    android:id="@+id/textViewContainer" android:layout_width="match_parent" android:layout_height="0px" android:background="#ffff0000"
    app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintTop_toBottomOf="@id/bottomTitleTextView">

    <View
        android:id="@+id/topStartMargin" android:layout_width="1dp" android:layout_height="1dp"
        app:layout_constraintTop_toTopOf="parent" app:layout_constraintStart_toStartOf="parent"/>

    <View
        android:id="@+id/bottomEndMargin" android:layout_width="1dp" android:layout_height="1dp"
        app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintEnd_toEndOf="parent"/>

    <com.lb.auto_fit_textview.AutoResizeTextView
        android:id="@+id/contentTextView" android:layout_width="0dp" android:layout_height="0dp" android:background="#ff00ff00" android:textSize="200sp" android:ellipsize="end"
        app:layout_constraintTop_toBottomOf="@id/topStartMargin" app:layout_constraintStart_toEndOf="@id/topStartMargin"
        app:layout_constraintEnd_toStartOf="@id/bottomEndMargin" app:layout_constraintBottom_toTopOf="@id/bottomEndMargin"/>

  </androidx.constraintlayout.widget.ConstraintLayout>

</androidx.constraintlayout.widget.ConstraintLayout>