adding the Import Contacts dialog

app/src/main/kotlin/com/simplemobiletools/contacts/activities/ContactActivity.kt

@@ -304,7 +304,11 @@ class ContactActivity : SimpleActivity() {
         supportActionBar?.title = resources.getString(R.string.new_contact)
         contact = Contact(0, "", "", "", "", ArrayList(), ArrayList(), ArrayList(), "", 0, 0)
         contact_source.text = config.lastUsedContactSource
-        contact_source.setOnClickListener { showAccountSourcePicker() }
+        contact_source.setOnClickListener {
+            showContactSourcePicker(contact_source.value) {
+                contact_source.text = it
+            }
+        }
     }
 
     private fun showPhotoPlaceholder() {
@@ -639,27 +643,6 @@ class ContactActivity : SimpleActivity() {
         }
     }
 
-    private fun showAccountSourcePicker() {
-        ContactsHelper(this).getContactSources {
-            val items = ArrayList<RadioItem>()
-            val sources = it
-            val currentSource = contact_source.value
-            var currentSourceIndex = -1
-            sources.forEachIndexed { index, account ->
-                items.add(RadioItem(index, account))
-                if (account == currentSource) {
-                    currentSourceIndex = index
-                }
-            }
-
-            runOnUiThread {
-                RadioGroupDialog(this, items, currentSourceIndex) {
-                    contact_source.text = sources[it as Int]
-                }
-            }
-        }
-    }
-
     private fun toggleFavorite() {
         val isStarred = isContactStarred()
         contact_toggle_favorite.apply {

app/src/main/kotlin/com/simplemobiletools/contacts/activities/MainActivity.kt

@@ -18,6 +18,7 @@ import com.simplemobiletools.contacts.R
 import com.simplemobiletools.contacts.adapters.ViewPagerAdapter
 import com.simplemobiletools.contacts.dialogs.ChangeSortingDialog
 import com.simplemobiletools.contacts.dialogs.FilterContactSourcesDialog
+import com.simplemobiletools.contacts.dialogs.ImportContactsDialog
 import com.simplemobiletools.contacts.extensions.config
 import com.simplemobiletools.contacts.extensions.onTabSelectionChanged
 import com.simplemobiletools.contacts.interfaces.RefreshContactsListener
@@ -258,7 +259,13 @@ class MainActivity : SimpleActivity(), RefreshContactsListener {
 
     private fun importContacts() {
         FilePickerDialog(this) {
-
+            ImportContactsDialog(this, it) {
+                if (it) {
+                    runOnUiThread {
+                        refreshContacts()
+                    }
+                }
+            }
         }
     }
 

app/src/main/kotlin/com/simplemobiletools/contacts/dialogs/ImportContactsDialog.kt

@@ -0,0 +1,52 @@
+package com.simplemobiletools.contacts.dialogs
+
+import android.support.v7.app.AlertDialog
+import android.view.ViewGroup
+import com.simplemobiletools.commons.extensions.setupDialogStuff
+import com.simplemobiletools.commons.extensions.toast
+import com.simplemobiletools.commons.extensions.value
+import com.simplemobiletools.contacts.R
+import com.simplemobiletools.contacts.activities.SimpleActivity
+import com.simplemobiletools.contacts.extensions.config
+import com.simplemobiletools.contacts.extensions.showContactSourcePicker
+import com.simplemobiletools.contacts.helpers.VcfImporter
+import com.simplemobiletools.contacts.helpers.VcfImporter.ImportResult.IMPORT_FAIL
+import kotlinx.android.synthetic.main.dialog_import_contacts.view.*
+
+class ImportContactsDialog(val activity: SimpleActivity, val path: String, val callback: (refreshView: Boolean) -> Unit) {
+    init {
+        val view = (activity.layoutInflater.inflate(R.layout.dialog_import_contacts, null) as ViewGroup).apply {
+            import_contacts_title.text = activity.config.lastUsedContactSource
+            import_contacts_title.setOnClickListener {
+                activity.showContactSourcePicker(import_contacts_title.value) {
+                    import_contacts_title.text = it
+                }
+            }
+        }
+
+        AlertDialog.Builder(activity)
+                .setPositiveButton(R.string.ok, null)
+                .setNegativeButton(R.string.cancel, null)
+                .create().apply {
+            activity.setupDialogStuff(view, this, R.string.import_contacts) {
+                getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener {
+                    activity.toast(R.string.importing)
+                    Thread {
+                        val result = VcfImporter(activity).importContacts(path, view.import_contacts_title.value)
+                        handleParseResult(result)
+                        dismiss()
+                    }.start()
+                }
+            }
+        }
+    }
+
+    private fun handleParseResult(result: VcfImporter.ImportResult) {
+        activity.toast(when (result) {
+            VcfImporter.ImportResult.IMPORT_OK -> R.string.importing_successful
+            VcfImporter.ImportResult.IMPORT_PARTIAL -> R.string.importing_some_entries_failed
+            else -> R.string.importing_failed
+        })
+        callback(result != IMPORT_FAIL)
+    }
+}

app/src/main/kotlin/com/simplemobiletools/contacts/extensions/Activity.kt

@@ -8,6 +8,7 @@ import com.simplemobiletools.commons.extensions.toast
 import com.simplemobiletools.commons.helpers.PERMISSION_CALL_PHONE
 import com.simplemobiletools.commons.models.RadioItem
 import com.simplemobiletools.contacts.activities.SimpleActivity
+import com.simplemobiletools.contacts.helpers.ContactsHelper
 import com.simplemobiletools.contacts.models.Contact
 
 fun SimpleActivity.startCallIntent(recipient: String) {
@@ -40,3 +41,23 @@ fun SimpleActivity.tryStartCall(contact: Contact) {
         }
     }
 }
+
+fun SimpleActivity.showContactSourcePicker(currentSource: String, callback: (newSource: String) -> Unit) {
+    ContactsHelper(this).getContactSources {
+        val items = ArrayList<RadioItem>()
+        val sources = it
+        var currentSourceIndex = -1
+        sources.forEachIndexed { index, account ->
+            items.add(RadioItem(index, account))
+            if (account == currentSource) {
+                currentSourceIndex = index
+            }
+        }
+
+        runOnUiThread {
+            RadioGroupDialog(this, items, currentSourceIndex) {
+                callback(sources[it as Int])
+            }
+        }
+    }
+}

app/src/main/kotlin/com/simplemobiletools/contacts/helpers/Constants.kt

@@ -22,3 +22,14 @@ val PHOTO_UNCHANGED = 4
 val DEFAULT_EMAIL_TYPE = ContactsContract.CommonDataKinds.Email.TYPE_HOME
 val DEFAULT_PHONE_NUMBER_TYPE = ContactsContract.CommonDataKinds.Phone.TYPE_MOBILE
 val DEFAULT_EVENT_TYPE = ContactsContract.CommonDataKinds.Event.TYPE_BIRTHDAY
+
+// export/import
+val BEGIN_VCARD = "BEGIN:VCARD"
+val END_VCARD = "END:VCARD"
+val N = "N"
+val FN = "FN"
+val TEL = "TEL"
+val VERSION = "VERSION"
+val BDAY = "BDAY"
+val PHOTO = "PHOTO"
+val EMAIL = "EMAIL"

app/src/main/kotlin/com/simplemobiletools/contacts/helpers/VcfImporter.kt

@@ -0,0 +1,53 @@
+package com.simplemobiletools.contacts.helpers
+
+import android.widget.Toast
+import com.simplemobiletools.commons.extensions.showErrorToast
+import com.simplemobiletools.contacts.activities.SimpleActivity
+import com.simplemobiletools.contacts.helpers.VcfImporter.ImportResult.*
+import java.io.File
+
+class VcfImporter(val activity: SimpleActivity) {
+    enum class ImportResult {
+        IMPORT_FAIL, IMPORT_OK, IMPORT_PARTIAL
+    }
+
+    private var contactsImported = 0
+    private var contactsFailed = 0
+
+    fun importContacts(path: String, targetContactSource: String): ImportResult {
+        try {
+            val inputStream = if (path.contains("/")) {
+                File(path).inputStream()
+            } else {
+                activity.assets.open(path)
+            }
+
+            inputStream.bufferedReader().use {
+                while (true) {
+                    val line = it.readLine() ?: break
+                    if (line.trim().isEmpty())
+                        continue
+
+                    if (line == BEGIN_VCARD) {
+                        resetValues()
+                    } else if (line == END_VCARD) {
+                        contactsImported++
+                    }
+                }
+            }
+        } catch (e: Exception) {
+            activity.showErrorToast(e, Toast.LENGTH_LONG)
+            contactsFailed++
+        }
+
+        return when {
+            contactsImported == 0 -> IMPORT_FAIL
+            contactsFailed > 0 -> IMPORT_PARTIAL
+            else -> IMPORT_OK
+        }
+    }
+
+    private fun resetValues() {
+
+    }
+}

app/src/main/res/layout/dialog_import_contacts.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/import_contacts_holder"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:paddingLeft="@dimen/activity_margin"
+    android:paddingRight="@dimen/activity_margin"
+    android:paddingTop="@dimen/activity_margin">
+
+    <com.simplemobiletools.commons.views.MyTextView
+        android:id="@+id/import_contacts_source_label"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/target_contact_source"
+        android:textSize="@dimen/smaller_text_size"/>
+
+    <com.simplemobiletools.commons.views.MyTextView
+        android:id="@+id/import_contacts_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="?attr/selectableItemBackground"
+        android:padding="@dimen/activity_margin"
+        tools:text="Phone"/>
+
+</LinearLayout>