remember last used data used at exporting events

app/src/main/kotlin/com/simplemobiletools/calendar/pro/activities/MainActivity.kt

@@ -789,8 +789,7 @@ class MainActivity : SimpleActivity(), RefreshRecyclerViewListener {
     }
 
     private fun exportEvents() {
-        FilePickerDialog(this, pickFile = false, showFAB = true) {
+        ExportEventsDialog(this, config.lastExportPath, false) { exportPastEvents, file, eventTypes ->
-            ExportEventsDialog(this, it, false) { exportPastEvents, file, eventTypes ->
             ensureBackgroundThread {
                 val events = eventsHelper.getEventsToExport(exportPastEvents, eventTypes)
                 if (events.isEmpty()) {
@@ -809,7 +808,6 @@ class MainActivity : SimpleActivity(), RefreshRecyclerViewListener {
             }
         }
     }
-    }
 
     private fun launchSettings() {
         startActivity(Intent(applicationContext, SettingsActivity::class.java))

app/src/main/kotlin/com/simplemobiletools/calendar/pro/dialogs/ExportEventsDialog.kt

@@ -6,7 +6,9 @@ import androidx.appcompat.app.AlertDialog
 import com.simplemobiletools.calendar.pro.R
 import com.simplemobiletools.calendar.pro.activities.SimpleActivity
 import com.simplemobiletools.calendar.pro.adapters.FilterEventTypeAdapter
+import com.simplemobiletools.calendar.pro.extensions.config
 import com.simplemobiletools.calendar.pro.extensions.eventsHelper
+import com.simplemobiletools.commons.dialogs.FilePickerDialog
 import com.simplemobiletools.commons.extensions.*
 import kotlinx.android.synthetic.main.dialog_export_events.view.*
 import java.io.File
@@ -14,15 +16,26 @@ import java.util.*
 
 class ExportEventsDialog(val activity: SimpleActivity, val path: String, val hidePath: Boolean,
                          val callback: (exportPastEvents: Boolean, file: File, eventTypes: ArrayList<Long>) -> Unit) {
+    private var realPath = if (path.isEmpty()) activity.internalStoragePath else path
+    val config = activity.config
 
     init {
         val view = (activity.layoutInflater.inflate(R.layout.dialog_export_events, null) as ViewGroup).apply {
-            export_events_folder.text = activity.humanizePath(path)
+            export_events_folder.text = activity.humanizePath(realPath)
             export_events_filename.setText("${activity.getString(R.string.events)}_${activity.getCurrentFormattedDateTime()}")
+            export_events_checkbox.isChecked = config.exportPastEvents
 
             if (hidePath) {
                 export_events_folder_label.beGone()
                 export_events_folder.beGone()
+            } else {
+                export_events_folder.setOnClickListener {
+                    activity.hideKeyboard(export_events_filename)
+                    FilePickerDialog(activity, realPath, false, showFAB = true) {
+                        export_events_folder.text = activity.humanizePath(it)
+                        realPath = it
+                    }
+                }
             }
 
             activity.eventsHelper.getEventTypes(activity, false) {
@@ -49,12 +62,15 @@ class ExportEventsDialog(val activity: SimpleActivity, val path: String, val hid
                             when {
                                 filename.isEmpty() -> activity.toast(R.string.empty_name)
                                 filename.isAValidFilename() -> {
-                                    val file = File(path, "$filename.ics")
+                                    val file = File(realPath, "$filename.ics")
                                     if (file.exists()) {
                                         activity.toast(R.string.name_taken)
                                         return@setOnClickListener
                                     }
 
+                                    config.lastExportPath = file.absolutePath.getParentPath()
+                                    config.exportPastEvents = view.export_events_checkbox.isChecked
+
                                     val eventTypes = (view.export_events_types_list.adapter as FilterEventTypeAdapter).getSelectedItemsList()
                                     callback(view.export_events_checkbox.isChecked, file, eventTypes)
                                     dismiss()

app/src/main/kotlin/com/simplemobiletools/calendar/pro/helpers/Config.kt

@@ -174,4 +174,12 @@ class Config(context: Context) : BaseConfig(context) {
     var allowChangingTimeZones: Boolean
         get() = prefs.getBoolean(ALLOW_CHANGING_TIME_ZONES, false)
         set(allowChangingTimeZones) = prefs.edit().putBoolean(ALLOW_CHANGING_TIME_ZONES, allowChangingTimeZones).apply()
+
+    var lastExportPath: String
+        get() = prefs.getString(LAST_EXPORT_PATH, "")!!
+        set(lastExportPath) = prefs.edit().putString(LAST_EXPORT_PATH, lastExportPath).apply()
+
+    var exportPastEvents: Boolean
+        get() = prefs.getBoolean(EXPORT_PAST_EVENTS, false)
+        set(exportPastEvents) = prefs.edit().putBoolean(EXPORT_PAST_EVENTS, exportPastEvents).apply()
 }

app/src/main/kotlin/com/simplemobiletools/calendar/pro/helpers/Constants.kt

@@ -73,6 +73,8 @@ const val DEFAULT_START_TIME = "default_start_time"
 const val DEFAULT_DURATION = "default_duration"
 const val DEFAULT_EVENT_TYPE_ID = "default_event_type_id"
 const val ALLOW_CHANGING_TIME_ZONES = "allow_changing_time_zones"
+const val LAST_EXPORT_PATH = "last_export_path"
+const val EXPORT_PAST_EVENTS = "export_past_events"
 
 // repeat_rule for monthly and yearly repetition
 const val REPEAT_SAME_DAY = 1                           // i.e. 25th every month, or 3rd june (if yearly repetition)