handle importing contacts via opening vcf file intent

app/src/main/AndroidManifest.xml

@@ -41,6 +41,16 @@
             <intent-filter>
                 <action android:name="android.intent.action.SEARCH"/>
             </intent-filter>
+
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW"/>
+
+                <data android:mimeType="text/directory"/>
+                <data android:mimeType="text/vcard"/>
+                <data android:mimeType="text/x-vcard"/>
+
+                <category android:name="android.intent.category.DEFAULT"/>
+            </intent-filter>
         </activity>
 
         <activity

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

@@ -4,6 +4,7 @@ import android.app.SearchManager
 import android.content.Context
 import android.content.Intent
 import android.graphics.drawable.ColorDrawable
+import android.net.Uri
 import android.os.Bundle
 import android.support.v4.view.MenuItemCompat
 import android.support.v4.view.ViewPager
@@ -21,6 +22,7 @@ import com.simplemobiletools.contacts.dialogs.ExportContactsDialog
 import com.simplemobiletools.contacts.dialogs.FilterContactSourcesDialog
 import com.simplemobiletools.contacts.dialogs.ImportContactsDialog
 import com.simplemobiletools.contacts.extensions.config
+import com.simplemobiletools.contacts.extensions.getTempFile
 import com.simplemobiletools.contacts.extensions.onTabSelectionChanged
 import com.simplemobiletools.contacts.helpers.ContactsHelper
 import com.simplemobiletools.contacts.helpers.VcfExporter
@@ -29,6 +31,7 @@ import com.simplemobiletools.contacts.models.Contact
 import kotlinx.android.synthetic.main.activity_main.*
 import kotlinx.android.synthetic.main.fragment_contacts.*
 import kotlinx.android.synthetic.main.fragment_favorites.*
+import java.io.FileOutputStream
 
 class MainActivity : SimpleActivity(), RefreshContactsListener {
     private var isFirstResume = true
@@ -238,6 +241,10 @@ class MainActivity : SimpleActivity(), RefreshContactsListener {
                     it.icon?.applyColorFilter(getAdjustedPrimaryColor())
                 }
         )
+
+        if (intent?.action == Intent.ACTION_VIEW && intent.data != null) {
+            tryImportContactsFromFile(intent.data)
+        }
     }
 
     private fun showSortingDialog() {
@@ -264,16 +271,39 @@ class MainActivity : SimpleActivity(), RefreshContactsListener {
 
     private fun importContacts() {
         FilePickerDialog(this) {
-            ImportContactsDialog(this, it) {
-                if (it) {
-                    runOnUiThread {
-                        refreshContacts()
-                    }
+            showImportContactsDialog(it)
+        }
+    }
+
+    private fun showImportContactsDialog(path: String) {
+        ImportContactsDialog(this, path) {
+            if (it) {
+                runOnUiThread {
+                    refreshContacts()
                 }
             }
         }
     }
 
+    private fun tryImportContactsFromFile(uri: Uri) {
+        when {
+            uri.scheme == "file" -> showImportContactsDialog(uri.path)
+            uri.scheme == "content" -> {
+                val tempFile = getTempFile()
+                if (tempFile == null) {
+                    toast(R.string.unknown_error_occurred)
+                    return
+                }
+
+                val inputStream = contentResolver.openInputStream(uri)
+                val out = FileOutputStream(tempFile)
+                inputStream.copyTo(out)
+                showImportContactsDialog(tempFile.absolutePath)
+            }
+            else -> toast(R.string.invalid_file_format)
+        }
+    }
+
     private fun tryExportContacts() {
         handlePermission(PERMISSION_WRITE_STORAGE) {
             if (it) {

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

@@ -3,6 +3,7 @@ package com.simplemobiletools.contacts.extensions
 import android.content.Intent
 import android.net.Uri
 import com.simplemobiletools.commons.R
+import com.simplemobiletools.commons.activities.BaseSimpleActivity
 import com.simplemobiletools.commons.dialogs.RadioGroupDialog
 import com.simplemobiletools.commons.extensions.toast
 import com.simplemobiletools.commons.helpers.PERMISSION_CALL_PHONE
@@ -10,6 +11,7 @@ import com.simplemobiletools.commons.models.RadioItem
 import com.simplemobiletools.contacts.activities.SimpleActivity
 import com.simplemobiletools.contacts.helpers.ContactsHelper
 import com.simplemobiletools.contacts.models.Contact
+import java.io.File
 
 fun SimpleActivity.startCallIntent(recipient: String) {
     handlePermission(PERMISSION_CALL_PHONE) {
@@ -61,3 +63,15 @@ fun SimpleActivity.showContactSourcePicker(currentSource: String, callback: (new
         }
     }
 }
+
+fun BaseSimpleActivity.getTempFile(): File? {
+    val folder = File(cacheDir, "contacts")
+    if (!folder.exists()) {
+        if (!folder.mkdir()) {
+            toast(R.string.unknown_error_occurred)
+            return null
+        }
+    }
+
+    return File(folder, "contacts.vcf")
+}

app/src/main/res/xml/provider_paths.xml

@@ -3,4 +3,5 @@
     <external-path name="external_files" path="."/>
     <root-path name="external_files" path="/storage/" />
     <cache-path name="cache_files" path="my_cache/" />
+    <cache-path name="shared_contacts" path="contacts/"/>
 </paths>