Allow null value for neutral in checkbox dialog

Author: hitherejoe

app/build.gradle

@@ -36,7 +36,7 @@ publish {
     userOrg = 'buffer'
     groupId = 'org.buffer.android'
     artifactId = 'android-components'
-    publishVersion = '0.14'
+    publishVersion = '0.15'
     desc = 'An Android library for frequently used UI components'
     website = 'https://github.com/bufferapp/android-components'
 }

app/src/main/java/org/buffer/android/components/DialogFactory.kt

@@ -377,22 +377,25 @@ object DialogFactory {
             @StringRes title: Int,
             @StringRes message: Int,
             @StringRes positive: Int,
-            @StringRes neutral: Int,
+            @StringRes neutral: Int?,
             @StringRes checkbox: Int,
             clickListener: ActionListener? = null
     ): MaterialAlertDialogBuilder {
         val checkboxView = LayoutInflater.from(context).inflate(R.layout.checkbox, null)
         val dontShowAgain = checkboxView.findViewById<CheckBox>(R.id.skip)
         dontShowAgain.setText(checkbox)
 
-        return MaterialAlertDialogBuilder(context)
+        val builder = MaterialAlertDialogBuilder(context)
                 .setView(checkboxView)
                 .setTitle(title)
                 .setMessage(message)
                 .setPositiveButton(positive) { dialog, which ->
                     clickListener?.onPositiveButtonSelected(dontShowAgain.isChecked) }
-                .setNeutralButton(neutral) { dialog, which ->
-                    clickListener?.onNeutralButtonSelected(dontShowAgain.isChecked) }
+        if (neutral != null) {
+            builder.setNeutralButton(neutral) { dialog, which ->
+                clickListener?.onNeutralButtonSelected(dontShowAgain.isChecked) }
+        }
+        return builder
     }