main.xml

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
  3. xmlns:app="http://schemas.android.com/apk/res-auto"
  4. xmlns:tools="http://schemas.android.com/tools"
  5. android:layout_width="match_parent"
  6. android:layout_height="match_parent"
  7. tools:context=".Main">
  8.  
  9. <TextView
  10. android:id="@+id/texto"
  11. android:layout_width="wrap_content"
  12. android:layout_height="wrap_content"
  13. android:text="Hello World!"
  14. app:layout_constraintBottom_toBottomOf="parent"
  15. app:layout_constraintLeft_toLeftOf="parent"
  16. app:layout_constraintRight_toRightOf="parent"
  17. app:layout_constraintTop_toTopOf="parent" />
  18.  
  19. </android.support.constraint.ConstraintLayout>

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