minor tweaks to sample of the WholeViewSnappingActivity.

added a way to draw the line seperators horizontally&vertically in a way that makes them as in "checkers" (rectangles), by using isUsingCheckersStyle.
This is demonstrated in WholeViewSnappingActivity.

Author: AndroidDeveloperLB

library/src/main/java/com/alamkanak/weekview/WeekView.kt

@@ -146,7 +146,7 @@ class WeekView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
     private var mStartOriginForScroll = 0f
 
     // Attributes and their default values.
-    private var mHourHeight =TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 50f, resources.displayMetrics).toInt()
+    private var mHourHeight = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 50f, resources.displayMetrics).toInt()
     private var mNewHourHeight = -1
     var minHourHeight = 0
     //no minimum specified (will be dynamic, based on screen)
@@ -159,22 +159,22 @@ class WeekView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
     private var mHeaderColumnPadding = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 10f, resources.displayMetrics).toInt()
     private var mHeaderColumnTextColor = Color.BLACK
     private var mNumberOfVisibleDays = 3
-    private var mHeaderRowPadding =  TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 5f, resources.displayMetrics).toInt()
+    private var mHeaderRowPadding = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 10f, resources.displayMetrics).toInt()
     private var mHeaderRowBackgroundColor = Color.WHITE
     private var mDayBackgroundColor = Color.rgb(245, 245, 245)
     private var mPastBackgroundColor = Color.rgb(227, 227, 227)
     private var mFutureBackgroundColor = Color.rgb(245, 245, 245)
     private var mPastWeekendBackgroundColor = 0
     private var mFutureWeekendBackgroundColor = 0
     private var mNowLineColor = Color.rgb(102, 102, 102)
-    private var mNowLineThickness =  TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 2f, resources.displayMetrics).toInt()
+    private var mNowLineThickness = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 2f, resources.displayMetrics).toInt()
     private var mHourSeparatorColor = Color.rgb(230, 230, 230)
     private var mTodayBackgroundColor = Color.rgb(239, 247, 254)
     private var mHourSeparatorHeight = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 1f, resources.displayMetrics).toInt()
     private var mTodayHeaderTextColor = Color.rgb(39, 137, 228)
     private var mEventTextSize = 12
     private var mEventTextColor = Color.BLACK
-    private var mEventPadding =  TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 4f, resources.displayMetrics).toInt()
+    private var mEventPadding = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 4f, resources.displayMetrics).toInt()
     private var mHeaderColumnBackgroundColor = Color.WHITE
     private var mDefaultEventColor: Int = 0
     private var mNewEventColor: Int = 0
@@ -1075,6 +1075,11 @@ class WeekView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
 
     private val refreshRunnable: Runnable
     private val uiHandler = Handler()
+    var isUsingCheckersStyle: Boolean = false
+        set(value) {
+            field = value
+            invalidate()
+        }
 
     //endregion fields and properties
 
@@ -1151,6 +1156,7 @@ class WeekView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
             minOverlappingMinutes = a.getInt(R.styleable.WeekView_minOverlappingMinutes, 0)
             mIsScrollNumberOfVisibleDays = a.getBoolean(R.styleable.WeekView_isScrollNumberOfVisibleDays, false)
             enableDrawHeaderBackgroundOnlyOnWeekDays = a.getBoolean(R.styleable.WeekView_enableDrawHeaderBackgroundOnlyOnWeekDays, false)
+            isUsingCheckersStyle = a.getBoolean(R.styleable.WeekView_isUsingCheckersStyle, false)
         } finally {
             a.recycle()
         }
@@ -1522,15 +1528,20 @@ class WeekView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
                 if (top > mHeaderHeight + (mHeaderRowPadding * 2).toFloat() + mTimeTextHeight / 2 + mHeaderMarginBottom - mHourSeparatorHeight && top < height && startPixel + mWidthPerDay - start > 0) {
                     hourLines[i * 4] = start
                     hourLines[i * 4 + 1] = top
-                    hourLines[i * 4 + 2] = startPixel + mWidthPerDay
+                    hourLines[i * 4 + 2] = startPixel + mWidthPerDay + if (isUsingCheckersStyle) mColumnGap else 0
                     hourLines[i * 4 + 3] = top
                     i++
                 }
             }
-
             // Draw the lines for hours.
             canvas.drawLines(hourLines, mHourSeparatorPaint)
 
+            // Draw line between days (before current one)
+            if (isUsingCheckersStyle) {
+                val x = if (dayNumber == leftDaysWithGaps + 1) start else start - mColumnGap / 2
+                canvas.drawLine(x, mHeaderHeight, x, height.toFloat(), mHourSeparatorPaint)
+            }
+
             // Draw the events.
             drawEvents(day, startPixel, canvas)
 

library/src/main/res/values/attrs.xml

@@ -67,5 +67,6 @@
         <attr name="dropListenerEnabled" format="boolean"/>
         <attr name="isScrollNumberOfVisibleDays" format="boolean"/>
         <attr name="enableDrawHeaderBackgroundOnlyOnWeekDays" format="boolean"/>
+        <attr name="isUsingCheckersStyle" format="boolean"/>
     </declare-styleable>
 </resources>

sample/src/main/AndroidManifest.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:tools="http://schemas.android.com/tools" package="com.alamkanak.weekview.sample" xmlns:android="http://schemas.android.com/apk/res/android">
+<manifest package="com.alamkanak.weekview.sample" xmlns:android="http://schemas.android.com/apk/res/android"
+          xmlns:tools="http://schemas.android.com/tools">
 
     <uses-permission android:name="android.permission.INTERNET"/>
 
@@ -13,12 +14,16 @@
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
+
         <activity
             android:name=".BasicActivity" android:label="@string/title_activity_basic"/>
+
         <activity
             android:name=".AsynchronousActivity" android:label="@string/title_activity_asynchronous"/>
-        <activity android:screenOrientation="userLandscape" android:theme="@style/AppTheme.FullScreen"
-            android:name=".WholeViewSnappingActivity" android:label="@string/title_activity_whole_view_snap"/>
+
+        <activity
+            android:name=".WholeViewSnappingActivity" android:label="@string/title_activity_whole_view_snap"
+            android:screenOrientation="userLandscape" android:theme="@style/AppTheme.FullScreen"/>
     </application>
 
 </manifest>

sample/src/main/java/com/alamkanak/weekview/sample/BaseActivity.kt

@@ -192,7 +192,7 @@ abstract class BaseActivity : AppCompatActivity(), WeekView.EventClickListener,
             }
 
             override fun interpretDate(date: Calendar): String {
-                return "a\nb" // if (shortDate) shortDateFormat.format(date.time) else normalDateFormat.format(date.time)
+                return if (shortDate) shortDateFormat.format(date.time) else normalDateFormat.format(date.time)
             }
         }
     }

sample/src/main/java/com/alamkanak/weekview/sample/WholeViewSnappingActivity.kt

@@ -2,6 +2,7 @@ package com.alamkanak.weekview.sample
 
 import android.graphics.RectF
 import android.os.Bundle
+import android.util.TypedValue
 import android.view.Menu
 import android.view.MenuItem
 import android.view.View
@@ -20,39 +21,33 @@ class WholeViewSnappingActivity : BasicActivity() {
         weekView.isShowNowLine = true
 //        weekView.setAutoLimitTime(true)
         weekView.setLimitTime(0, 24)
+        weekView.isUsingCheckersStyle = true
+        weekView.columnGap = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 1f, resources.displayMetrics).toInt()
+        weekView.hourSeparatorHeight = weekView.columnGap
         weekView.isScrollNumberOfVisibleDays = true
         setDayViewType(TYPE_WEEK_VIEW)
         val cal = Calendar.getInstance()
         val currentHour = cal.get(Calendar.HOUR_OF_DAY) + cal.get(Calendar.MINUTE) / 60.0
         weekView.goToHour(Math.max(currentHour - 1, 0.0))
         cal.set(Calendar.DAY_OF_WEEK, cal.firstDayOfWeek)
         weekView.goToDate(cal)
-//        weekView.enableDrawHeaderBackgroundOnlyOnWeekDays = true
 //        weekView.addEventClickListener = null
 //        weekView.eventClickListener = object : WeekView.EventClickListener {
 //            override fun onEventClick(event: WeekViewEvent, eventRect: RectF) {
 //            }
 //        }
-//        weekView.columnGap
-//        weekView.dayBackgroundColor=0xffffffff.toInt()
+
         weekView.emptyViewClickListener = null
         weekView.emptyViewLongPressListener = null
         weekView.scrollListener = object : WeekView.ScrollListener {
             val monthFormatter = SimpleDateFormat("MMM", Locale.getDefault())
-
             override fun onFirstVisibleDayChanged(newFirstVisibleDay: Calendar, oldFirstVisibleDay: Calendar?) {
                 weekView.sideTitleText = monthFormatter.format(newFirstVisibleDay.time)
             }
-
         }
-
         draggable_view.visibility = View.GONE
 
 
-        weekView.addEventClickListener = null
-        weekView.headerRowBackgroundColor = 0xff242b3e.toInt()
-        weekView.headerColumnTextColor = 0xc2c3c3c3.toInt()
-        weekView.nowLineColor = 0xff112d71.toInt()
         weekView.eventClickListener = object : WeekView.EventClickListener {
             override fun onEventClick(event: WeekViewEvent, eventRect: RectF) {
             }

sample/src/main/res/layout/activity_base.xml

@@ -11,12 +11,7 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         app:eventTextColor="@android:color/white"
-        app:textSize="12sp"
-        app:hourHeight="60dp"
-        app:headerColumnPadding="8dp"
         app:headerColumnTextColor="@color/toolbar_text"
-        app:headerRowPadding="12dp"
-        app:columnGap="8dp"
         app:noOfVisibleDays="3"
         app:minTime="4"
         app:maxTime="16"