java - My Second Activity [TabLayout] Not Supporting on all other device -

i beginner of android development.i planed create application helps education seeker of country.at posting time have created 2 activity. first activity created listview. , second activity created tablayout contains 3 fragments. when launched app on lollipop device,all activity working fine.but when launched on marshmallow device,first activity working when clicked on other list item,my apps getting closed automatically.but why??? here important information understood easily.

build.gradle

    apply plugin: 'com.android.application'  android {     compilesdkversion 25     buildtoolsversion "24.0.2"     defaultconfig {         applicationid "waystoprogram.mcquniversityadmission"         minsdkversion 10         targetsdkversion 25         versioncode 1         versionname "1.0"         testinstrumentationrunner "android.support.test.runner.androidjunitrunner"     }     buildtypes {         release {             minifyenabled false             proguardfiles getdefaultproguardfile('proguard-android.txt'), 'proguard-rules.pro'         }     } }  dependencies {     compile filetree(include: ['*.jar'], dir: 'libs')     androidtestcompile('com.android.support.test.espresso:espresso-core:2.2.2', {         exclude group: 'com.android.support', module: 'support-annotations'     })     compile 'com.android.support:appcompat-v7:25.0.0'     compile 'com.android.support:support-v4:25.0.0'     compile 'com.android.support:design:25.0.0'     testcompile 'junit:junit:4.12'     compile 'com.android.support:design:25.0.0'     compile 'com.android.support:support-v4:25.0.0' } 

secondactivity.java

package waystoprogram.mcquniversityadmission;   import android.os.bundle; import android.support.design.widget.tablayout; import android.support.v4.app.fragmentactivity; import android.support.v4.view.viewpager;  class secondactivity extends fragmentactivity {     viewpager viewpager;     tablayout tablayout;     @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.second_activity);         viewpager = (viewpager) findviewbyid(r.id.viewpager);         tablayout = (tablayout) findviewbyid(r.id.swiptab);         tablayout.addtab(tablayout.newtab());         tablayout.addtab(tablayout.newtab());         tablayout.addtab(tablayout.newtab());          viewpager.setadapter(new viewpageradapter(getsupportfragmentmanager()));         tablayout.setupwithviewpager(viewpager);         tablayout.addontabselectedlistener(new tablayout.ontabselectedlistener() {             @override             public void ontabselected(tablayout.tab tab) {                 viewpager.setcurrentitem(tab.getposition());             }              @override             public void ontabunselected(tablayout.tab tab) {                 viewpager.setcurrentitem(tab.getposition());              }              @override             public void ontabreselected(tablayout.tab tab) {                 viewpager.setcurrentitem(tab.getposition());             }         });     } } 

viewpageradapter.java

package waystoprogram.mcquniversityadmission;  import android.support.v4.app.fragment; import android.support.v4.app.fragmentmanager; import android.support.v4.app.fragmentstatepageradapter;  /**  * created that's enam on 11/1/2016.  */  public class viewpageradapter extends fragmentstatepageradapter {     private string[] tabtitles = new string[]{"science", "commerce", "rc"};     public viewpageradapter(fragmentmanager fm) {         super(fm);     }      @override     public fragment getitem(int position) {         if(position==0){             return new sciencedivision();         }         if(position==1){             return new commercedivision();         }         if(position==2){             return new sciencedivision();         }          return null;     }      @override     public int getcount() {         return 3;     }      @override     public charsequence getpagetitle(int position) {         return tabtitles[position];     } } 

second_acitvity.xml

<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"     xml:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:id="@+id/secondactivity">      <android.support.design.widget.tablayout         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:id="@+id/swiptab"         app:tabindicatorcolor="#ff0066e2"         app:tabtextcolor="@color/colorprimarydark"         >     </android.support.design.widget.tablayout>      <android.support.v4.view.viewpager         android:layout_width="match_parent"         android:id="@+id/viewpager"         android:layout_height="match_parent"         android:layout_alignparentbottom="true"         android:layout_alignparentleft="true"         android:layout_alignparentstart="true"         android:layout_below="@+id/swiptab">      </android.support.v4.view.viewpager> </relativelayout> 

• sdk-platform
  please me anyone.