settings.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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">

    <ImageButton
        android:id="@+id/imageButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="?attr/homeAsUpIndicator" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="340dp"
        android:layout_height="38dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="32dp"
        android:text="@string/daily_goal_set"
        android:textAlignment="textStart"
        android:textSize="24sp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView9" />

    <SeekBar
        android:id="@+id/seekBar2"
        android:layout_width="340dp"
        android:layout_height="38dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView4" />

    <TextView
        android:id="@+id/textView5"
        android:layout_width="340dp"
        android:layout_height="38dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="16dp"
        android:text="@string/notf_settings"
        android:textSize="24sp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/seekBar2" />

    <TextView
        android:id="@+id/textView6"
        android:layout_width="170dp"
        android:layout_height="38dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:text="@string/notf_switch"
        android:textSize="18sp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView5" />

    <Switch
        android:id="@+id/switch1"
        android:layout_width="63dp"
        android:layout_height="38dp"
        android:layout_marginStart="32dp"
        android:layout_marginTop="8dp"
        app:layout_constraintStart_toEndOf="@+id/textView6"
        app:layout_constraintTop_toBottomOf="@+id/textView5" />

    <TextView
        android:id="@+id/textView7"
        android:layout_width="170dp"
        android:layout_height="38dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:text="@string/notify_me"
        android:textSize="18sp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView6" />

    <Spinner
        android:id="@+id/spinner"
        android:layout_width="162dp"
        android:layout_height="38dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:entries="@string/spinner_opt"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/textView7"
        app:layout_constraintTop_toBottomOf="@+id/switch1" />

    <TextView
        android:id="@+id/textView8"
        android:layout_width="170dp"
        android:layout_height="38dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:text="@string/notf_feedback"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView7" />

    <RadioButton
        android:id="@+id/radioButton"
        android:layout_width="162dp"
        android:layout_height="38dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:text="@string/audio"
        android:textSize="14sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/textView8"
        app:layout_constraintTop_toBottomOf="@+id/spinner" />

    <RadioButton
        android:id="@+id/radioButton2"
        android:layout_width="162dp"
        android:layout_height="38dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:text="@string/vibration"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/textView8"
        app:layout_constraintTop_toBottomOf="@+id/radioButton" />

    <RadioButton
        android:id="@+id/radioButton3"
        android:layout_width="162dp"
        android:layout_height="38dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:text="@string/led"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/textView8"
        app:layout_constraintTop_toBottomOf="@+id/radioButton2" />

    <EditText
        android:id="@+id/editText"
        android:layout_width="346dp"
        android:layout_height="44dp"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:ems="10"
        android:inputType="textPersonName"
        android:text="@string/notf_text"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/radioButton3" />

    <TextView
        android:id="@+id/textView9"
        android:layout_width="277dp"
        android:layout_height="44dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:text="@string/setting_button"
        android:textAlignment="textStart"
        android:textSize="30sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/imageButton"
        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>