setBackgroundcolor error in the onitemclicklistener

I want items to change color when the user selects them. But when an item changes color, another item changes in the same way, I don't know why this error occurs, this is the code

I am using a listview and a simpleCursorAdapter, with a LoaderManager

class MainActivity : AppCompatActivity(), LoaderManager.LoaderCallbacks<Cursor>,AdapterView.OnItemClickListener{      var cols=listOf<String>(          ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,          ContactsContract.CommonDataKinds.Phone.NUMBER,          ContactsContract.CommonDataKinds.Phone._ID,          ContactsContract.CommonDataKinds.Phone.LOOKUP_KEY      ).toTypedArray()      lateinit  var listView1:ListView      lateinit var adapter:SimpleCursorAdapter      lateinit var cursor:Cursor      override fun onCreate(savedInstanceState: Bundle?) {          super.onCreate(savedInstanceState)          val binding=ActivityMainBinding.inflate(layoutInflater)          setContentView(binding.root)          if(ActivityCompat.checkSelfPermission(this, permission.READ_CONTACTS) != PackageManager.PERMISSION_GRANTED){              ActivityCompat.requestPermissions(this,Array(1){ Manifest.permission.READ_CONTACTS},111)          }else {              var from=listOf<String>(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,                  ).toTypedArray()              var to = intArrayOf(R.id.name)                adapter = SimpleCursorAdapter(this,                  R.layout.list_item_contacts,                  null,                  from,                  to,0)              listView1=findViewById<ListView>(R.id.listView1) as ListView                LoaderManager.getInstance(this).initLoader(1, null, this)          }          listView1.onItemClickListener=this      }        override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {          super.onRequestPermissionsResult(requestCode, permissions, grantResults)          if(requestCode==111 && grantResults[0]==PackageManager.PERMISSION_GRANTED){              LoaderManager.getInstance(this).initLoader(1,null,this)            }      }        override fun onCreateLoader(id: Int, args: Bundle?): Loader<Cursor> {          return CursorLoader(applicationContext,              ContactsContract.CommonDataKinds.Phone.CONTENT_URI,              cols,              null,              null,              ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME          )        }        override fun onLoadFinished(loader: Loader<Cursor>, data: Cursor?) {          adapter.swapCursor(data)          listView1.adapter=adapter          }        override fun onLoaderReset(loader: Loader<Cursor>) {          adapter.swapCursor(null)          listView1.adapter=adapter        }        @RequiresApi(Build.VERSION_CODES.LOLLIPOP)      override fun onItemClick(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {            parent?.get(position)?.setBackgroundColor(Color.argb(96,189,189,189))        }    }  

And this is the resultenter image description here

example: when pressing the name of "angela" the name of "center of attention" is marked

I do not know if there is any other function that I do not know, it should be noted that I am starting in Android programming, if you could help me

https://stackoverflow.com/questions/67386064/setbackgroundcolor-error-in-the-onitemclicklistener May 04, 2021 at 09:45PM