diff --git a/viewcomponents/src/main/java/com/afollestad/nocknock/viewcomponents/ext/SpinnerExt.kt b/viewcomponents/src/main/java/com/afollestad/nocknock/viewcomponents/ext/SpinnerExt.kt
new file mode 100644
index 0000000..b2f6058
--- /dev/null
+++ b/viewcomponents/src/main/java/com/afollestad/nocknock/viewcomponents/ext/SpinnerExt.kt
@@ -0,0 +1,23 @@
+/*
+ * Licensed under Apache-2.0
+ *
+ * Designed and developed by Aidan Follestad (@afollestad)
+ */
+package com.afollestad.nocknock.viewcomponents.ext
+
+import android.view.View
+import android.widget.AdapterView
+import android.widget.Spinner
+
+fun Spinner.onItemSelected(cb: (Int) -> Unit) {
+  onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
+    override fun onNothingSelected(parent: AdapterView<*>?) = Unit
+
+    override fun onItemSelected(
+      parent: AdapterView<*>?,
+      view: View?,
+      position: Int,
+      id: Long
+    ) = cb(position)
+  }
+}
diff --git a/viewcomponents/src/main/java/com/afollestad/nocknock/viewcomponents/ext/TextViewExt.kt b/viewcomponents/src/main/java/com/afollestad/nocknock/viewcomponents/ext/TextViewExt.kt
new file mode 100644
index 0000000..fc34583
--- /dev/null
+++ b/viewcomponents/src/main/java/com/afollestad/nocknock/viewcomponents/ext/TextViewExt.kt
@@ -0,0 +1,57 @@
+/*
+ * Licensed under Apache-2.0
+ *
+ * Designed and developed by Aidan Follestad (@afollestad)
+ */
+package com.afollestad.nocknock.viewcomponents.ext
+
+import android.widget.TextView
+
+fun TextView.trimmedText() = text.toString().trim()
+
+fun TextView.textAsLong(): Long {
+  val text = trimmedText()
+  return if (text.isEmpty()) 0L else text.toLong()
+}
+
+///** @author https://stackoverflow.com/a/53296137/309644 */
+//fun EditText.addFilter(filter: InputFilter) {
+//  filters =
+//      if (filters.isNullOrEmpty()) {
+//        arrayOf(filter)
+//      } else {
+//        filters
+//            .toMutableList()
+//            .apply {
+//              removeAll { it.javaClass == filter.javaClass }
+//              add(filter)
+//            }
+//            .toTypedArray()
+//      }
+//}
+//
+//fun <T : InputFilter> EditText.removeFilters(type: Class<in T>) {
+//  filters =
+//      if (filters.isNullOrEmpty()) {
+//        filters
+//      } else {
+//        filters
+//            .toMutableList()
+//            .apply {
+//              removeAll { it.javaClass == type }
+//            }
+//            .toTypedArray()
+//      }
+//}
+//
+//fun EditText.setMaxLength(maxLength: Int) {
+//  if (maxLength <= 0) {
+//    removeFilters(LengthFilter::class.java)
+//  } else {
+//    if (text.length > maxLength) {
+//      setText(text.subSequence(0, maxLength))
+//      setSelection(text.length)
+//    }
+//    addFilter(LengthFilter(maxLength))
+//  }
+//}
diff --git a/viewcomponents/src/main/java/com/afollestad/nocknock/viewcomponents/ext/ViewExt.kt b/viewcomponents/src/main/java/com/afollestad/nocknock/viewcomponents/ext/ViewExt.kt
index e53d4fa..24691d0 100644
--- a/viewcomponents/src/main/java/com/afollestad/nocknock/viewcomponents/ext/ViewExt.kt
+++ b/viewcomponents/src/main/java/com/afollestad/nocknock/viewcomponents/ext/ViewExt.kt
@@ -10,9 +10,6 @@ import android.view.View.GONE
 import android.view.View.INVISIBLE
 import android.view.View.VISIBLE
 import android.view.ViewTreeObserver
-import android.widget.AdapterView
-import android.widget.Spinner
-import android.widget.TextView
 import androidx.annotation.DimenRes
 
 fun View.show() {
@@ -29,26 +26,6 @@ fun View.hide() {
 
 fun View.showOrHide(show: Boolean) = if (show) show() else hide()
 
-fun TextView.trimmedText() = text.toString().trim()
-
-fun TextView.textAsLong(): Long {
-  val text = trimmedText()
-  return if (text.isEmpty()) 0L else text.toLong()
-}
-
-fun Spinner.onItemSelected(cb: (Int) -> Unit) {
-  onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
-    override fun onNothingSelected(parent: AdapterView<*>?) = Unit
-
-    override fun onItemSelected(
-      parent: AdapterView<*>?,
-      view: View?,
-      position: Int,
-      id: Long
-    ) = cb(position)
-  }
-}
-
 fun View.onLayout(cb: () -> Unit) {
   if (this.viewTreeObserver.isAlive) {
     this.viewTreeObserver.addOnGlobalLayoutListener(
diff --git a/viewcomponents/src/main/res/layout/check_interval_layout.xml b/viewcomponents/src/main/res/layout/check_interval_layout.xml
index 5e15e85..05a8948 100644
--- a/viewcomponents/src/main/res/layout/check_interval_layout.xml
+++ b/viewcomponents/src/main/res/layout/check_interval_layout.xml
@@ -35,6 +35,7 @@
         android:fontFamily="sans-serif-light"
         android:hint="0"
         android:inputType="number"
+        android:maxLength="6"
         android:textSize="@dimen/body_font_size"
         tools:ignore="Autofill,HardcodedText,LabelFor"
         />