How to import Gallery images in your App using Intent filter Android Studio Kotlin

 

item.XML

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <androidx.cardview.widget.CardView
        android:layout_width="match_parent"
        android:layout_height="350dp"
        android:layout_margin="16dp"
        app:cardCornerRadius="15dp"
        app:cardElevation="10dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <ImageView
            android:id="@+id/imgView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scaleType="centerCrop"
            android:src="@drawable/ic_launcher_background"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />
    </androidx.cardview.widget.CardView>
</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.XML

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/rvView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

Adapter.kt

package com.imageviewdemo

import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.ImageView
import androidx.recyclerview.widget.RecyclerView

class Adapter(val mainActivity: MainActivity, val iList: ArrayList<ModelData>) : RecyclerView.Adapter<Adapter.viewData>() {

    class viewData(itemView: View) : RecyclerView.ViewHolder(itemView){
        val imgView = itemView.findViewById<ImageView>(R.id.imgView)
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): viewData {
        val view = LayoutInflater.from(mainActivity).inflate(R.layout.item, parent, false)
        return viewData(view)
    }

    override fun onBindViewHolder(holder: viewData, position: Int) {
        holder.imgView.setImageURI(iList[position].uri)
    }

    override fun getItemCount(): Int {
        return iList.size
    }
}

ModelClass.kt

package com.imageviewdemo

import android.net.Uri

data class ModelData(var uri: Uri) 

MainActivity.java

package com.imageviewdemo

import android.content.Intent
import android.net.Uri
import android.os.Bundle
import android.os.Parcelable
import android.util.Log
import androidx.appcompat.app.AppCompatActivity
import androidx.recyclerview.widget.LinearLayoutManager
import com.imageviewdemo.databinding.ActivityMainBinding


class MainActivity : AppCompatActivity() {
    val binding by lazy { ActivityMainBinding.inflate(layoutInflater) }
    var iList : ArrayList<ModelData> = ArrayList()
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(binding.root)

        binding.rvView.layoutManager = LinearLayoutManager(this)

        if (Intent.ACTION_SEND == intent.action){
            val imgUri : Uri = intent.getParcelableExtra(Intent.EXTRA_STREAM)!!
            if (imgUri!=null){
                iList.add(ModelData(imgUri))
                binding.rvView.adapter = Adapter(this, iList)
            }
        }

        Log.e("TAG", "top: $iList")

        if (Intent.ACTION_SEND_MULTIPLE == intent.action && intent.hasExtra(Intent.EXTRA_STREAM)) {
            val list = intent.getParcelableArrayListExtra<Parcelable>(Intent.EXTRA_STREAM)
            for (parcel in list!!) {
                val uri: Uri = parcel as Uri
                iList.add(ModelData(uri))
            }
            binding.rvView.adapter = Adapter(this, iList)
        }
    }

}