Binding Adapter with Glide in Android

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Overview

Binding adapters are responsible for binding the codes to your layout elements.

Code

 class MainActivity : AppCompatActivity()
 {
    private lateinit var binding : ActivityMainBinding
    override fun onCreate(savedInstanceState : Bundle?)
    {
        super.onCreate(savedInstanceState)
        binding = DataBindingUtil.setContentView(this , R.layout.activity_main)
        val post = Post(
            "Hello World!" ,
            "This is the first line of code that is being written" ,
            "https://assets.hongkiat.com/uploads/hello-world-different-programming-languages/r.jpg"
        )
        binding.post = post
    }
 }
 data class Post(val title : String , val description : String , val url : String)
 package com.example.bindingadapters_android

 import android.widget.ImageView
 import androidx.databinding.BindingAdapter
 import com.bumptech.glide.Glide

 @BindingAdapter("imageFromUrl")
 fun ImageView.imageFromUrl(url : String)
 {
    Glide.with(this.context).load(url).into(this)
 }
 <?xml version="1.0" encoding="utf-8"?>
 <layout 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">

    <data>

        <variable
                name="post"
                type="com.example.bindingadapters_android.Post" />
    </data>

    <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            tools:context=".MainActivity">

        <ImageView
                android:id="@+id/imgPostImage"
                imageFromUrl="@{post.url}"
                android:layout_width="200dp"
                android:layout_height="200dp"
                android:scaleType="center"
                app:layout_constraintBottom_toTopOf="@+id/tvPostTitle"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                tools:srcCompat="@tools:sample/avatars" />

        <TextView
                android:id="@+id/tvPostTitle"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@{post.title}"
                android:textSize="20sp"
                android:textStyle="bold"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toBottomOf="@id/imgPostImage" />

        <TextView
                android:id="@+id/tvPostDescription"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="20dp"
                android:text="@{post.description}"
                android:textSize="16sp"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/tvPostTitle" />

    </androidx.constraintlayout.widget.ConstraintLayout>
 </layout>

References







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