I have working Kotlin code that displays a subset of contacts from a search criteria. Now I want to let the users press a specific contact in that result to display that contact's details. There are several examples on how to display the contact details in stackoverflow. For example: Pick contact directly from contact picker intent. But it's unclear where to insert this additional feature into the code.
I tried adding in the OnCreate section
i = Intent(Intent.ACTION_PICK)
i.type = ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE
startActivityForResult(i, SELECT_PHONE_NUMBER)
and later on in the code
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
if (requestCode == SELECT_PHONE_NUMBER && resultCode == Activity.RESULT_OK) {
val contactUri = data?.data ?: return
val projection = arrayOf(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER)
val cursor = requireContext().contentResolver.query(contactUri, projection,
null, null, null)
if (cursor != null && cursor.moveToFirst()) {
val nameIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)
val numberIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)
val name = cursor.getString(nameIndex)
val number = cursor.getString(numberIndex)
// do something with name and phone
}
cursor?.close()
}
}
But I got an error message ConnectActivity.kt: No value passed for parameter 'p0' for the line in the code that says val cursor = requirecontext().contentResolver.query.....specifically in the() area. If you can show how to fix this or provide a different solution, it would be greatly appreaciated.
The working code without the changes discussed above is here:
package com.example.myapplication
import android.Manifest
import android.app.Activity
import android.content.Intent
import android.content.pm.PackageManager
import android.os.Bundle
import android.provider.ContactsContract
import android.widget.ListView
import androidx.appcompat.widget.SearchView
import android.widget.SimpleCursorAdapter
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import androidx.core.app.ActivityCompat
import androidx.core.content.ContentProviderCompat.requireContext
import java.io.IOException
class ConnectActivity : AppCompatActivity() {
private lateinit var searchView: SearchView
private lateinit var listView: ListView
var cols = listOf<String> (
ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER,
ContactsContract.CommonDataKinds.Phone._ID
).toTypedArray()
try {
//Toast.makeText(getApplicationContext(), "got here", Toast.LENGTH_SHORT).show();
searchView = findViewById(R.id.searchView)
listView = findViewById(R.id.listView)
if (ActivityCompat.checkSelfPermission( this@ConnectActivity, Manifest.permission.READ_CONTACTS)!= PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this@ConnectActivity, Array(1){Manifest.permission.READ_CONTACTS}, 111)
}
else {
readContact()
}
} catch (e: Exception) {
Toast.makeText(getApplicationContext(), e.message, Toast.LENGTH_LONG).show()
}
}
override fun onRequestPermissionsResult(requestCode: Int,permissions: Array<out String>,grantResults: IntArray){
super.onRequestPermissionsResult(requestCode,permissions,grantResults)
Toast.makeText(getApplicationContext(), "then here", Toast.LENGTH_SHORT).show()
if (requestCode==111 && grantResults[0] == PackageManager.PERMISSION_GRANTED)
readContact()
}
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
if (requestCode == SELECT_PHONE_NUMBER && resultCode == Activity.RESULT_OK) {
val contactUri = data?.data ?: return
val projection = arrayOf(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER)
val cursor = requireContext().contentResolver.query(contactUri, projection,
null, null, null)
if (cursor != null && cursor.moveToFirst()) {
val nameIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)
val numberIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)
val name = cursor.getString(nameIndex)
val number = cursor.getString(numberIndex)
// do something with name and phone
}
cursor?.close()
}
}
private fun readContact() {
var from = listOf<String>(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER).toTypedArray()
var to = intArrayOf(android.R.id.text1,android.R.id.text2)
var rs = contentResolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
cols,null,null,
ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)
var adapter = SimpleCursorAdapter(this,android.R.layout.simple_list_item_2,
rs,from,to,0)
listView.adapter =adapter
searchView.setOnQueryTextListener(object: SearchView.OnQueryTextListener{
override fun onQueryTextSubmit(p0: String?):Boolean {
return false
}
override fun onQueryTextChange(p0:String?):Boolean{
rs = contentResolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
cols,"${ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME} LIKE ?",
Array(1){"%$p0%"},
ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)
adapter.changeCursor(rs)
return false
}
})
}
companion object {
private const val SELECT_PHONE_NUMBER = 111
}
}
xml file is
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
android:paddingLeft="10dp"
android:paddingRight="10dp">
<androidx.appcompat.widget.SearchView
android:id="@+id/searchView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_marginTop="20dp"
android:queryHint="hi"
/>
<ListView
android:id="@+id/listView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_marginTop="20dp"
android:layout_below="@+id/searchView"
/>
</RelativeLayout>
