Receive data from Adapter to DetailsActivity? - kotlin

Question

I want to know how I can receive the data from adapter (recyclerview) to DetailsActivity. I tried many times but the images from recyclerview doesn't show in DetailsActivity.
this is my code.
ImageAdapter
class ImageAdapter (private var items:List<Item>, private val context:Context):
RecyclerView.Adapter<ImageAdapter.ViewHolder>() {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int):ViewHolder {
return ViewHolder(
LayoutInflater.from(context).inflate(R.layout.item, parent, false)
)
}
override fun getItemCount(): Int {
return items.size
}
override fun onBindViewHolder(holder: ImageAdapter.ViewHolder, position: Int) {
val item = items[position]
Picasso.get().load(item.imageUrl).into(holder.imageView)
holder.imageView.setOnClickListener {
val intent = Intent(context, DetailsActivity::class.java)
intent.putExtra("iImages", item.imageUrl)
context.startActivity(intent)
}
}
class ViewHolder(view:View):RecyclerView.ViewHolder(view) {
val imageView : ImageView = view.findViewById(R.id.imageView)
}
}
DetailsActivity
class DetailsActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_details)
val aImageView = intent.getIntExtra("iImages", 0)
details_image.setImageResource(aImageView)
}
}
RecyclerActivity
class RecyclerActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_recycler)
val storage = FirebaseStorage.getInstance()
val storageRef = storage.reference.child("wallpapers")
val imageList : ArrayList<Item> = ArrayList()
//progressBar.visibility = View.VISIBLE
val listAllTask : Task<ListResult> = storageRef.listAll()
listAllTask.addOnCompleteListener { result ->
val items: List<StorageReference> = result.result!!.items
//add cycle for add image url to list
items.forEachIndexed { index,item ->
item.downloadUrl.addOnSuccessListener {
Log.d("item", "$it")
imageList.add(Item(it.toString()))
}.addOnCompleteListener {
recyclerview.adapter = ImageAdapter(imageList, this)
recyclerview.layoutManager = LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false)
//progressBar.visibility = View.GONE
}
}
}
}
}
Item
data class Item(
var imageUrl: String
)

Answer 1

The problem is this line:
details_image.setImageResource(aImageView)
You are setting a resource int but what you pass seems to be a url, so instead load the "iImages" value with Picasso for that view
Edit: Replace this:
val aImageView = intent.getIntExtra("iImages", 0)
details_image.setImageResource(aImageView)
with this
val retrievedImageUrl = intent.getIntExtra("iImages", 0)
Picasso.get().load(retrievedImageUrl).into(details_image)

Answer 2

The Answer
val imageView : ImageView = findViewById(R.id.details_image)
Glide.with(this).load(intent.getStringExtra("iImages")).into(imageView)