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Pager iOS SDK

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package board

import java.lang.IllegalArgumentException

data class Cell(val i: Int, val j: Int) {
    override fun toString() = "($i, $j)"
}

enum class Direction {
    UP, DOWN, RIGHT, LEFT;

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package rationals

import java.math.BigInteger

data class Rational(val n: BigInteger, val d: BigInteger): Comparable<Rational> {

    init { require(d != BigInteger.ZERO ) {"Zero is not allowed in the denominator"} }

    override fun toString(): String {
        if (this.d == BigInteger.ONE) return "${this.n}"

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fun main() {
  println(palindromeIndex("aaa"))
}

fun palindromeIndex(s: String): Int {
  val reversed = s.reversed()
  if (s == reversed) return -1

  for (i in 0 until s.length) {
    var countLeft = 0

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<metadata>
    <!-- Some Metadata.xml fixes for binding "Java WebSockets" (https://github.com/TooTallNate/Java-WebSocket/) in Xamarin.Android -->

    <!-- This is a case of http://docs.xamarin.com/guides/android/advanced_topics/java_integration_overview/binding_a_java_library_(.jar)/#Problem_Duplicate_custom_EventArgs_types

         Error CS0102: The type `Org.Java_websocket.WebsocketMessageEventArgs'
         already contains a definition for `p0' -->
    <attr path="/api/package[@name='org.java_websocket']/interface[@name='WebSocketListener']/method[@name='onWebsocketMessage' and count(parameter)=2 and parameter[1][@type='org.java_websocket.WebSocket'] and parameter[2][@type='java.nio.ByteBuffer']]" name="argsType">WebsocketMessageByteBufferEventArgs</attr>

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<metadata>
	<!-- Some Metadata.xml fixes for binding the Socialize Android SDK (http://getsocialize.com/sdk/) in Xamarin.Android
	     Note that this is not a complete set of fixes. These changes only address the first round of compile errors. -->

	<!-- Fixes for duplicate EventArgs, as discussed on:
	     http://docs.xamarin.com/guides/android/advanced_topics/java_integration_overview/binding_a_java_library_(.jar)/#Problem_Duplicate_custom_EventArgs_types
	     Error message: Error CS0102: The type `SomeClass` already contains a definition for `p0' (CS0102) -->
	<attr path="/api/package[@name='com.socialize.auth.twitter']/interface[@name='TwitterAuthListener']/method[@name='onError' and count(parameter)=1 and parameter[1][@type='com.socialize.error.SocializeException']]" name="argsType">AuthTwitterErrorEventArgs</attr>
	<attr path="/api/package[@name='com.socialize.facebook']/interface[@name='Facebook.DialogListener']/method[@name='onComplete' and count(parameter)=1 and parameter[1][@type='android.os.Bundle

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<metadata>
  <!-- Error CS0234: The type or namespace name `QuadCorners' does not exist in the namespace `DE.Neom.Neoreadersdk'. Are you missing an assembly reference?
       
       This problem is caused by the default unspecified visibility of
       the QuadCorners Java class.

       Note in particular the very end of the following line from
       `obj/Debug/api.xml`:

       <class abstract="false" deprecated="not deprecated" extends="java.lang.Object" extends-generic-aware="java.lang.Object" final="false" name="QuadCorners" static="false" visibility="">

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<metadata>
  <!-- Some Metadata.xml fixes for binding the "Brother Print SDK for
       Android" (http://www.brother.com/product/dev/mobile/android/) in
       Xamarin.Android. -->


  <!-- Warning BG8401: Skipping Com.Brother.Ptouch.Sdk.LabelInfo.LabelColor, due to a duplicate field, method or nested type name

       This one is a bit tricky. Let's first just try removing the whole
       LabelColor nested class:

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  <!-- This is an example of http://developer.xamarin.com/guides/android/advanced_topics/java_integration_overview/binding-a-java-library/troubleshooting-bindings/#Problem_Duplicate_custom_EventArgs_types

       In this particular case, the conflicting definition is in
       `Com.Adtech.Mobilesdk.Publisher.Vast.Player.ILinearAdPlayer`.
       That interface also defines an "onError" method.

       Error CS0102: The type
       `Com.Adtech.Mobilesdk.Publisher.Vast.Player.ErrorEventArgs'
       already contains a definition for `p0' -->
  <attr path="/api/package[@name='com.adtech.mobilesdk.publisher.vast.player']/interface[@name='VideoPlayerListener']/method[@name='onError' and count(parameter)=1 and parameter[1][@type='java.lang.Exception']]" name="argsType">VideoPlayerListenerOnErrorArgs</attr>

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Approaching a Xamarin.Android Bindings Case

1. Investigation

One of the best ways to investigate a problematic Xamarin.Android Binding is to first ensure you have the proper tooling available:

• Diagnostic MSBuild Output Enabled(Instructions)
• Java Decompiler(http://jd.benow.ca/)
• .NET Decompiler(https://www.jetbrains.com/decompiler/)
• Binding SDK Documentation