show the list widget configuration activity from settings when requested

app/src/main/kotlin/com/simplemobiletools/calendar/activities/SettingsActivity.kt

@@ -8,10 +8,7 @@ import android.text.TextUtils
 import com.simplemobiletools.calendar.R
 import com.simplemobiletools.calendar.dialogs.SelectCalendarsDialog
 import com.simplemobiletools.calendar.extensions.*
-import com.simplemobiletools.calendar.helpers.CalDAVHandler
-import com.simplemobiletools.calendar.helpers.FONT_SIZE_LARGE
-import com.simplemobiletools.calendar.helpers.FONT_SIZE_MEDIUM
-import com.simplemobiletools.calendar.helpers.FONT_SIZE_SMALL
+import com.simplemobiletools.calendar.helpers.*
 import com.simplemobiletools.calendar.models.EventType
 import com.simplemobiletools.commons.dialogs.ConfirmationDialog
 import com.simplemobiletools.commons.dialogs.CustomIntervalPickerDialog
@@ -392,7 +389,10 @@ class SettingsActivity : SimpleActivity() {
 
     private fun setupCustomizeWidgetColors() {
         settings_customize_widget_colors_holder.setOnClickListener {
-
+            Intent(this, WidgetListConfigureActivity::class.java).apply {
+                putExtra(IS_CUSTOMIZING_COLORS, true)
+                startActivity(this)
+            }
         }
     }
 

app/src/main/kotlin/com/simplemobiletools/calendar/activities/WidgetListConfigureActivity.kt

@@ -3,7 +3,6 @@ package com.simplemobiletools.calendar.activities
 import android.app.Activity
 import android.appwidget.AppWidgetManager
 import android.content.Intent
-import android.content.res.Resources
 import android.graphics.Color
 import android.os.Bundle
 import android.widget.SeekBar
@@ -12,6 +11,7 @@ import com.simplemobiletools.calendar.adapters.EventListAdapter
 import com.simplemobiletools.calendar.extensions.config
 import com.simplemobiletools.calendar.extensions.seconds
 import com.simplemobiletools.calendar.helpers.Formatter
+import com.simplemobiletools.calendar.helpers.IS_CUSTOMIZING_COLORS
 import com.simplemobiletools.calendar.helpers.MyWidgetListProvider
 import com.simplemobiletools.calendar.models.ListEvent
 import com.simplemobiletools.calendar.models.ListItem
@@ -24,9 +24,6 @@ import org.joda.time.DateTime
 import java.util.*
 
 class WidgetListConfigureActivity : SimpleActivity() {
-    lateinit var mRes: Resources
-    private var mPackageName = ""
-
     private var mBgAlpha = 0f
     private var mWidgetId = 0
     private var mBgColorWithoutTransparency = 0
@@ -35,21 +32,21 @@ class WidgetListConfigureActivity : SimpleActivity() {
     private var mTextColor = 0
 
     private var mEventsAdapter: EventListAdapter? = null
+    private var mIsCustomizingColors = false
 
     public override fun onCreate(savedInstanceState: Bundle?) {
         useDynamicTheme = false
         super.onCreate(savedInstanceState)
         setResult(Activity.RESULT_CANCELED)
         setContentView(R.layout.widget_config_list)
-        mPackageName = packageName
         initVariables()
 
-        val extras = intent.extras
-        if (extras != null)
-            mWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID)
+        mIsCustomizingColors = intent.extras?.getBoolean(IS_CUSTOMIZING_COLORS) ?: false
+        mWidgetId = intent.extras?.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID) ?: AppWidgetManager.INVALID_APPWIDGET_ID
 
-        if (mWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID)
+        if (mWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID && !mIsCustomizingColors) {
             finish()
+        }
 
         mEventsAdapter = EventListAdapter(this, getListItems(), false, null, config_events_list) {}
         mEventsAdapter!!.updateTextColor(mTextColor)
@@ -69,8 +66,6 @@ class WidgetListConfigureActivity : SimpleActivity() {
     }
 
     private fun initVariables() {
-        mRes = resources
-
         mTextColorWithoutTransparency = config.widgetTextColor
         updateColors()
 

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

@@ -51,6 +51,7 @@ const val LAST_USED_CALDAV_CALENDAR = "last_used_caldav_calendar"
 const val DISPLAY_PAST_EVENTS = "display_past_events"
 const val REPLACE_DESCRIPTION = "replace_description"
 const val SHOW_GRID = "show_grid"
+const val IS_CUSTOMIZING_COLORS = "is_customizing_colors"
 
 // repeat_rule for monthly repetition
 const val REPEAT_MONTH_SAME_DAY = 1                   // ie 25th every month