1:  <?xml version="1.0" encoding="utf-8"?>

   2:  <androidx.constraintlayout.widget.ConstraintLayout

   3:      xmlns:android="http://schemas.android.com/apk/res/android"

   4:      xmlns:app="http://schemas.android.com/apk/res-auto"

   5:      xmlns:tools="http://schemas.android.com/tools"

   6:      android:layout_width="match_parent"

   7:      android:id="@+id/main"

   8:      android:layout_height="match_parent"

   9:      tools:context=".activities.DialerActivity">

  10:   

  11:      <EditText

  12:          android:id="@+id/phoneNumberEditText"

  13:          android:layout_width="0dp"

  14:          android:layout_height="wrap_content"

  15:          android:layout_marginBottom="16dp"

  16:          android:background="@drawable/edit_text_border"

  17:          android:hint="@string/enter_phone_number"

  18:          android:inputType="phone"

  19:          android:padding="12dp"

  20:          android:textSize="20sp"

  21:          app:layout_constraintEnd_toEndOf="parent"

  22:          app:layout_constraintStart_toStartOf="parent"

  23:          app:layout_constraintTop_toTopOf="parent" />

  24:   

  25:      <GridLayout

  26:          android:id="@+id/dailPad"

  27:          android:layout_width="0dp"

  28:          android:layout_height="wrap_content"

  29:          android:columnCount="3"

  30:          android:columnOrderPreserved="true"

  31:          android:rowCount="4"

  32:          app:layout_constraintEnd_toEndOf="parent"

  33:          app:layout_constraintStart_toStartOf="parent"

  34:          app:layout_constraintTop_toBottomOf="@id/phoneNumberEditText">

  35:   

  36:          <Button

  37:              android:id="@+id/button1"

  38:              style="@style/DialerButton"

  39:              android:text="1" />

  40:   

  41:          <Button

  42:              android:id="@+id/button2"

  43:              style="@style/DialerButton"

  44:              android:text="2" />

  45:   

  46:          <Button

  47:              android:id="@+id/button3"

  48:              style="@style/DialerButton"

  49:              android:text="3" />

  50:   

  51:          <Button

  52:              android:id="@+id/button4"

  53:              style="@style/DialerButton"

  54:              android:text="4" />

  55:   

  56:          <Button

  57:              android:id="@+id/button5"

  58:              style="@style/DialerButton"

  59:              android:text="5" />

  60:   

  61:          <Button

  62:              android:id="@+id/button6"

  63:              style="@style/DialerButton"

  64:              android:text="6" />

  65:   

  66:          <Button

  67:              android:id="@+id/button7"

  68:              style="@style/DialerButton"

  69:              android:text="7" />

  70:   

  71:          <Button

  72:              android:id="@+id/button8"

  73:              style="@style/DialerButton"

  74:              android:text="8" />

  75:   

  76:          <Button

  77:              android:id="@+id/button9"

  78:              style="@style/DialerButton"

  79:              android:text="9" />

  80:   

  81:          <Button

  82:              android:id="@+id/buttonStar"

  83:              style="@style/DialerButton"

  84:              android:text="*" />

  85:   

  86:          <Button

  87:              android:id="@+id/button0"

  88:              style="@style/DialerButton"

  89:              android:text="0"

  90:              android:drawableBottom="@drawable/plus_sign"

  91:              android:gravity="center"

  92:              android:paddingBottom="8dp" />

  93:   

  94:          <Button

  95:              android:id="@+id/buttonHash"

  96:              style="@style/DialerButton"

  97:              android:text="#" />

  98:   

  99:      </GridLayout>

 100:   

 101:      <Button

 102:          android:id="@+id/callButton"

 103:          android:layout_width="0dp"

 104:          android:layout_height="wrap_content"

 105:          android:layout_marginTop="16dp"

 106:          android:backgroundTint="@color/voip"

 107:          android:text="Voice Call by phone"

 108:          android:textColor="@color/white"

 109:          app:layout_constraintEnd_toEndOf="parent"

 110:          app:layout_constraintStart_toStartOf="parent"

 111:          app:layout_constraintTop_toBottomOf="@id/dailPad" />

 112:   

 113:      <Button

 114:          android:id="@+id/callVoiceVoipsButton"

 115:          android:layout_width="0dp"

 116:          android:layout_height="wrap_content"

 117:          android:layout_marginTop="16dp"

 118:          android:backgroundTint="@color/voip"

 119:          android:text="Voice Call by VOIP"

 120:          android:textColor="@color/white"

 121:          app:layout_constraintEnd_toEndOf="parent"

 122:          app:layout_constraintStart_toStartOf="parent"

 123:          app:layout_constraintTop_toBottomOf="@id/callButton" />

 124:   

 125:      <Button

 126:          android:id="@+id/addContactButton"

 127:          android:layout_width="0dp"

 128:          android:layout_height="wrap_content"

 129:          android:layout_marginTop="16dp"

 130:          android:backgroundTint="@color/voip"

 131:          android:text="Add To Contact"

 132:          android:textColor="@color/white"

 133:          app:layout_constraintEnd_toEndOf="parent"

 134:          app:layout_constraintStart_toStartOf="parent"

 135:          app:layout_constraintTop_toBottomOf="@id/callVoiceVoipsButton" />

 136:   

 137:      <com.google.android.material.tabs.TabLayout

 138:          android:id="@+id/tabLayout"

 139:          android:layout_width="match_parent"

 140:          android:layout_height="wrap_content"

 141:          android:background="@color/material_dynamic_neutral90"

 142:          app:layout_constraintBottom_toBottomOf="parent"

 143:          app:layout_constraintEnd_toEndOf="parent"

 144:          app:layout_constraintStart_toStartOf="parent"/>

 145:   

 146:  </androidx.constraintlayout.widget.ConstraintLayout>

 147: