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HelloKotlinFi-

Código y notas de la sesión de introducción al desarrollo Android con Kotlin


viewBinding

Permite enlazar las vistas con la lógica de de la app

  • En build.gradle (Módulo app) dentro de android {...} ->

      buildFeatures{
          viewBinding true
      }
    
  • En mainActivity.kt dentro de class MainActivity() {...} ->

      private lateinit var binding: ActivityMainBinding
    
          override fun onCreate(savedInstanceState: Bundle?) {
              super.onCreate(savedInstanceState)
              binding = ActivityMainBinding.inflate(layoutInflater)
              setContentView(binding.root)
              ...
          }
    

Agregar permisos

  • Dentro de AndroidManifest.xml en

      <manifest...>
          <uses-permission android:name="android.permission.INTERNET"/>
          ...
      </manifest>
    

Agregar una imagen

  • Colocar la imagen dentro de la carpeta

      res -> drawable
    

ConstrainLayout

Permite definir la ubicacion de los elementos a traves de los atributos:

- ToptoTopOf
- BottomToBottomOf
- EndToEndOf
- StartToStartOf
- BottomToTopOf
- TopToBottomOf
- StartToEndOf
- EndToStartOf

Documentación importante

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