<uses-permission android:name="android.permission.READ_CONTACTS"/>

     if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_CONTACTS) !=
             PackageManager.PERMISSION_GRANTED) {
         ActivityCompat.requestPermissions(this, 
 
arrayOf(Manifest.permission.READ_CONTACTS), 1)
     } else {
         readContacts()  //讀取聯系人信息
     }

   override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
        when (requestCode) {
            1 ->
                if 
 
(grantResults.size > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    readContacts()
                } else {
                    Toast.makeText(this, "You denied the permission", Toast.LENGTH_SHORT).show()
                }
        }
    }

  
 
var adapter: ArrayAdapter<String>? = null
  var contactsList = mutableListOf<String>()

   //實例化 適配器
   adapter = ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, contactsList)
   //為listView 設置適配器
   lv_contents_view.adapter = adapter

    /**
     * 加載聯系人信息
     */
    private fun readContacts() {
        var cursor: Cursor

        //查詢聯系人數據
        cursor = contentResolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                null, null, null, null)
        if (cursor != null) {
            while (cursor.moveToNext()) {
                //獲取聯系人姓名
                var displayName = cursor.getString(cursor.getColumnIndex(
                        ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME))
                //獲取聯系人電話
                var number = cursor.getString(cursor.getColumnIndex(
                        ContactsContract.CommonDataKinds.Phone.NUMBER))
                // 添加聯系人信息到集合當中
                contactsList.add(displayName + "\n" + number)
            }
            //刷新 ListView
            adapter?.notifyDataSetChanged()
        }
        cursor.close()  //關閉 Cursor 對象
    }

通過 ContentResolver 讀取聯系人信息