feat: Add support for moving between months

app/src/main/java/com/p_vacho/neat_calendar/activities/CalendarActivity.kt

@@ -4,6 +4,7 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.ImageButton
 import android.widget.TextView
 import androidx.activity.enableEdgeToEdge
 import androidx.appcompat.app.AppCompatActivity
@@ -19,6 +20,10 @@ import java.util.Locale
 class CalendarActivity : AppCompatActivity() {
     private lateinit var tvMonthYear: TextView
     private lateinit var rvCalendar: RecyclerView
+    private lateinit var btnPreviousMonth: ImageButton
+    private lateinit var btnNextMonth: ImageButton
+
+    private var currentYearMonth: YearMonth = YearMonth.now()
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -32,9 +37,20 @@ class CalendarActivity : AppCompatActivity() {
 
         tvMonthYear = findViewById(R.id.tvMonthYear)
         rvCalendar = findViewById(R.id.rvCalendar)
+        btnPreviousMonth = findViewById(R.id.btnPreviousMonth)
+        btnNextMonth = findViewById(R.id.btnNextMonth)
 
-        val currentMonth = YearMonth.now()
-        setCalendarForMonth(currentMonth)
+        setCalendarForMonth(currentYearMonth)
+
+        btnPreviousMonth.setOnClickListener {
+            currentYearMonth = currentYearMonth.minusMonths(1)
+            setCalendarForMonth(currentYearMonth)
+        }
+
+        btnNextMonth.setOnClickListener {
+            currentYearMonth = currentYearMonth.plusMonths(1)
+            setCalendarForMonth(currentYearMonth)
+        }
     }
 
     private fun setCalendarForMonth(yearMonth: YearMonth) {

app/src/main/res/drawable/ic_arrow_left.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+  <path
+      android:pathData="M560,680 L360,480l200,-200v400Z"
+      android:fillColor="#e8eaed"/>
+</vector>

app/src/main/res/drawable/ic_arrow_right.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+  <path
+      android:pathData="M400,680v-400l200,200 -200,200Z"
+      android:fillColor="#e8eaed"/>
+</vector>

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

@@ -7,6 +7,20 @@
     android:layout_height="match_parent"
     tools:context=".activities.CalendarActivity">
 
+    <!-- Previous Month Button -->
+    <ImageButton
+        android:id="@+id/btnPreviousMonth"
+        android:layout_width="56dp"
+        android:layout_height="56dp"
+        android:padding="8dp"
+        android:background="?attr/selectableItemBackgroundBorderless"
+        android:src="@drawable/ic_arrow_left"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintBottom_toBottomOf="@id/tvMonthYear"
+        android:contentDescription="@string/previous_month" />
+
+    <!-- Month-Year Text -->
     <TextView
         android:id="@+id/tvMonthYear"
         android:layout_width="0dp"
@@ -17,6 +31,21 @@
         tools:text="January 2024"
         android:textAppearance="?attr/textAppearanceHeadline6"
         app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toEndOf="@id/btnPreviousMonth"
+        app:layout_constraintEnd_toStartOf="@id/btnNextMonth" />
+
+    <!-- Next Month Button -->
+    <ImageButton
+        android:id="@+id/btnNextMonth"
+        android:layout_width="56dp"
+        android:layout_height="56dp"
+        android:padding="8dp"
+        android:background="?attr/selectableItemBackgroundBorderless"
+        android:src="@drawable/ic_arrow_right"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintBottom_toBottomOf="@id/tvMonthYear"
+        android:contentDescription="@string/next_month" />
 
     <!-- Day Names Row -->
     <LinearLayout

app/src/main/res/values/strings.xml

@@ -16,6 +16,8 @@
     <string name="base_url_hint">https://myapiurl.com</string>
     <string name="save">Save</string>
     <string name="cancel">Cancel</string>
+    <string name="previous_month">Previous Month</string>
+    <string name="next_month">Next Month</string>
     <string name="monday_short">Mo</string>
     <string name="tuesday_short">Tu</string>
     <string name="wednesday_short">We</string>