implementing date and time picker at task activity

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

@@ -1322,7 +1322,6 @@ class EventActivity : SimpleActivity() {
 
     private fun setupStartDate() {
         hideKeyboard()
-        config.backgroundColor.getContrastColor()
         val datepicker = DatePickerDialog(
             this, mDialogTheme, startDateSetListener, mEventStartDateTime.year, mEventStartDateTime.monthOfYear - 1,
             mEventStartDateTime.dayOfMonth

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

@@ -1,5 +1,7 @@
 package com.simplemobiletools.calendar.pro.activities
 
+import android.app.DatePickerDialog
+import android.app.TimePickerDialog
 import android.os.Bundle
 import android.view.Menu
 import android.view.WindowManager
@@ -8,11 +10,14 @@ import com.simplemobiletools.calendar.pro.extensions.config
 import com.simplemobiletools.calendar.pro.helpers.Formatter
 import com.simplemobiletools.calendar.pro.helpers.TASK_ID
 import com.simplemobiletools.commons.extensions.*
-import com.simplemobiletools.commons.helpers.mydebug
 import kotlinx.android.synthetic.main.activity_task.*
 import org.joda.time.DateTime
+import java.util.*
 
 class TaskActivity : SimpleActivity() {
+    private var mDialogTheme = 0
+    private lateinit var mTaskDateTime: DateTime
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_task)
@@ -22,7 +27,9 @@ class TaskActivity : SimpleActivity() {
         }
 
         val intent = intent ?: return
+        mDialogTheme = getDialogTheme()
         val taskId = intent.getLongExtra(TASK_ID, 0L)
+        mTaskDateTime = DateTime.now()
         updateColors()
         gotTask()
     }
@@ -38,9 +45,12 @@ class TaskActivity : SimpleActivity() {
             task_all_day.toggle()
         }
 
-        task_start_date.text = Formatter.getDate(this, DateTime.now())
+        task_date.setOnClickListener { setupDate() }
-        task_start_time.text = Formatter.getTime(this, DateTime.now())
+        task_time.setOnClickListener { setupTime() }
+
         setupNewTask()
+        updateDateText()
+        updateTimeText()
     }
 
     private fun setupNewTask() {
@@ -49,9 +59,52 @@ class TaskActivity : SimpleActivity() {
         updateActionBarTitle(getString(R.string.new_task))
     }
 
+    private fun setupDate() {
+        hideKeyboard()
+        val datepicker = DatePickerDialog(
+            this, mDialogTheme, dateSetListener, mTaskDateTime.year, mTaskDateTime.monthOfYear - 1, mTaskDateTime.dayOfMonth
+        )
+
+        datepicker.datePicker.firstDayOfWeek = if (config.isSundayFirst) Calendar.SUNDAY else Calendar.MONDAY
+        datepicker.show()
+    }
+
+    private fun setupTime() {
+        hideKeyboard()
+        TimePickerDialog(
+            this, mDialogTheme, timeSetListener, mTaskDateTime.hourOfDay, mTaskDateTime.minuteOfHour, config.use24HourFormat
+        ).show()
+    }
+
+    private val dateSetListener = DatePickerDialog.OnDateSetListener { view, year, monthOfYear, dayOfMonth ->
+        dateSet(year, monthOfYear, dayOfMonth)
+    }
+
+    private val timeSetListener = TimePickerDialog.OnTimeSetListener { view, hourOfDay, minute ->
+        timeSet(hourOfDay, minute)
+    }
+
+    private fun dateSet(year: Int, month: Int, day: Int) {
+        mTaskDateTime = mTaskDateTime.withDate(year, month + 1, day)
+        updateDateText()
+    }
+
+    private fun timeSet(hours: Int, minutes: Int) {
+        mTaskDateTime = mTaskDateTime.withHourOfDay(hours).withMinuteOfHour(minutes)
+        updateTimeText()
+    }
+
+    private fun updateDateText() {
+        task_date.text = Formatter.getDate(this, mTaskDateTime)
+    }
+
+    private fun updateTimeText() {
+        task_time.text = Formatter.getTime(this, mTaskDateTime)
+    }
+
     private fun toggleAllDay(isChecked: Boolean) {
         hideKeyboard()
-        task_start_time.beGoneIf(isChecked)
+        task_time.beGoneIf(isChecked)
     }
 
     private fun updateColors() {

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

@@ -89,7 +89,7 @@
         </RelativeLayout>
 
         <com.simplemobiletools.commons.views.MyTextView
-            android:id="@+id/task_start_date"
+            android:id="@+id/task_date"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_below="@+id/task_time_image"
@@ -102,7 +102,7 @@
             tools:text="January 1 1970" />
 
         <com.simplemobiletools.commons.views.MyTextView
-            android:id="@+id/task_start_time"
+            android:id="@+id/task_time"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_below="@+id/task_time_image"