java - issue using HorizontalPicker library -

i implemented this library app accomplishing horizontal picker view think followed whatever asked dont know why nit showing (widget here totally transparent) how implemented :

mainactivity:

public class mainactivity extends appcompatactivity {  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     toolbar toolbar = (toolbar) findviewbyid(r.id.toolbar);     setsupportactionbar(toolbar);      floatingactionbutton fab = (floatingactionbutton) findviewbyid(r.id.fab);     fab.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view view) {             snackbar.make(view, "replace own action", snackbar.length_long)                     .setaction("action", null).show();         }     }); }  @override public boolean oncreateoptionsmenu(menu menu) {     // inflate menu; adds items action bar if present.     getmenuinflater().inflate(r.menu.menu_main, menu);     return true; }  @override public boolean onoptionsitemselected(menuitem item) {     // handle action bar item clicks here. action bar     // automatically handle clicks on home/up button, long     // specify parent activity in androidmanifest.xml.     int id = item.getitemid();      //noinspection simplifiableifstatement     if (id == r.id.action_settings) {         return true;     }      return super.onoptionsitemselected(item); } } 

main.xml:

 <?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:paddingbottom="@dimen/activity_vertical_margin"     android:paddingleft="@dimen/activity_horizontal_margin"     android:paddingright="@dimen/activity_horizontal_margin"     android:paddingtop="@dimen/activity_vertical_margin"     app:layout_behavior="@string/appbar_scrolling_view_behavior"     tools:context="pb.monthpicker.mainactivity"     tools:showin="@layout/activity_main">    <com.wefika.horizontalpicker.horizontalpicker         xmlns:picker="http://schemas.android.com/apk/lib/com.wefika.horizontalpicker"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:textcolor="@color/colorprimarydark"         android:textsize="@dimen/textsize"         android:ellipsize="start"          android:marqueerepeatlimit="-1"         android:id="@+id/month_picker"         picker:values="@array/values"         picker:dividersize="@dimen/itempadding"         picker:sideitems="@integer/sideitems"          android:layout_centervertical="true"         android:layout_centerhorizontal="true" />  </relativelayout> 

this values:

// value of sideitems   `<integer name="sideitems">3</integer>`  // value of text size:         <dimen name="textsize">16dp</dimen> //value of padding:     <dimen name="itempadding">8dp</dimen>  // value of array         <string-array name="values">         <item>1</item>         <item>2</item>         <item>3</item>         <item>4</item>         <item>5</item>         <item>6</item>         <item>7</item>         <item>8</item>         <item>9</item>         <item>10</item>     </string-array> 

// build.grade

  apply plugin: 'com.android.application'  android { compilesdkversion 23 buildtoolsversion "23.0.2"  defaultconfig {     applicationid "pb.monthpicker"     minsdkversion 16     targetsdkversion 23     versioncode 1     versionname "1.0" } buildtypes {     release {         minifyenabled false         proguardfiles getdefaultproguardfile('proguard-android.txt'), 'proguard-rules.pro'     } }  }  dependencies {     compile filetree(dir: 'libs', include: ['*.jar'])     testcompile 'junit:junit:4.12'     compile 'com.android.support:appcompat-v7:23.1.1'     compile 'com.android.support:design:23.1.1'     compile 'com.wefika:horizontal-picker:+' } 

guys idea doing wrong ? guidance helpful me , :)

replace in gradle file

compile 'com.wefika:horizontal-picker:+ 

with

compile 'com.wefika:horizontal-picker:1.1.0' 

try layout :

  <?xml version="1.0" encoding="utf-8"?>      <relativelayout xmlns:android="http://schemas.android.com/apk/res/android"         xmlns:tools="http://schemas.android.com/tools"         xmlns:app="http://schemas.android.com/apk/res-auto"         android:id="@+id/container"         android:layout_width="match_parent"         android:layout_height="match_parent"         tools:context="com.wefika.horizontalpicker.example.mainactivity">          <com.wefika.horizontalpicker.horizontalpicker         android:id="@+id/picker"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:textcolor="@android:color/holo_blue_dark"         android:textsize="22sp"         android:paddingtop="16dp"         android:paddingbottom="16dp"         android:ellipsize="marquee"         android:marqueerepeatlimit="2"         android:focusable="true"         android:focusableintouchmode="true"         app:values="@array/values"         app:dividersize="10dp"         app:sideitems="1"/>         </relativelayout>