android - Why Application shuts down as soon as it's launched even if there's no error caution? -

i have 3 xml files layouts such as

1. activity_behind_left_simple.xml
2. activity_behind_right_simple.xml
3. activity_main.xml

i implemented textviews activity_behind_left_simple.xml , shows list of menu. works fine.

so did same on activity_behind_right_simple.xml, too.

however, application shuts down it's launched:(

why that? what's wrong right side? activity_behind_left_simple.xml

<scrollview xmlns:android="http://schemas.android.com/apk/res/android"     style="@style/leftbehindmenuscroll" >      <linearlayout style="@style/behindmenuscrollcontent"         android:paddingtop="25dp" >          <textview             style="@style/behindmenuitemtitle"             android:text="people" />          <linearlayout             android:layout_width="match_parent"             android:layout_height="wrap_content" >              <jp.fureco.iconview                  android:id="@+id/iconviewitem4"                 android:orientation="vertical"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_marginleft="15dp"                 android:textsize="20dp"/>              <textview                 android:layout_marginleft="10dp"                 style="@style/behindmenuitemlabel"                 android:text="visitor" />          </linearlayout>      </linearlayout>  </scrollview> 

activity_behind_right_simple.xml

<scrollview xmlns:android="http://schemas.android.com/apk/res/android"     style="@style/rightbehindmenuscroll" >      <linearlayout style="@style/behindmenuscrollcontent"         android:paddingtop="25dp" >          <textview             style="@style/behindmenuitemtitle"             android:text="messages" />          <linearlayout             android:layout_width="match_parent"             android:layout_height="wrap_content" >              <jp.fureco.iconview                  android:id="@+id/iconviewitem5"                 android:orientation="vertical"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_marginleft="15dp"                 android:textsize="20dp"/>              <textview                 android:layout_marginleft="10dp"                 style="@style/behindmenuitemlabel"                 android:text="received" />          </linearlayout>      </linearlayout>  </scrollview> 

simplesidedrawer.java

    ....    public view setleftbehindcontentview(int leftbehindlayout) {         final view content = ((layoutinflater) getcontext().getsystemservice(context.layout_inflater_service)).inflate(leftbehindlayout, mleftbehindbase);          string[] icons = getresources().getstringarray(r.array.icons);         iconview iv4 = (iconview) findviewbyid(r.id.iconviewitem4);         iv4.settypeface(typeface.createfromasset(getcontext().getassets(), "icons.ttf"));         iv4.settext(icons[8]);          iconview iv5 = (iconview) findviewbyid(r.id.iconviewitem5);         iv5.settypeface(typeface.createfromasset(getcontext().getassets(), "icons.ttf"));         iv5.settext(icons[315]);           mleftpaddingrect = new rect(content.getpaddingleft(), content.getpaddingtop(), content.getpaddingright(), content.getpaddingbottom());         mleftbehindview = content;         return content;     }              .... 

then if remove part, application won't shuts down anymore.
how can fix?

iconview iv5 = (iconview) findviewbyid(r.id.iconviewitem5); iv5.settypeface(typeface.createfromasset(getcontext().getassets(), "icons.ttf")); iv5.settext(icons[315]); 

mainactivity.java

...     @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);        getsize();      mactionbar = getactionbar();     mactionbar.hide();       mnav = new simplesidedrawer(this);     mnav.setleftbehindcontentview(r.layout.activity_behind_left_simple);     mnav.setrightbehindcontentview(r.layout.activity_behind_right_simple); .... 

simplesidedrawer.java i've found this. matter?

public view setrightbehindcontentview(int rightbehindlayout) {     final view content = ((layoutinflater) getcontext().getsystemservice(context.layout_inflater_service)).inflate(rightbehindlayout, mrightbehindbase);     mrightpaddingrect = new rect(content.getpaddingleft(), content.getpaddingtop(), content.getpaddingright(), content.getpaddingbottom());     mrightbehindview = content;     return content; } 

part2

public view setleftbehindcontentview(int leftbehindlayout) {     final view content = ((layoutinflater) getcontext().getsystemservice(context.layout_inflater_service)).inflate(leftbehindlayout, mleftbehindbase);      string[] icons = getresources().getstringarray(r.array.icons);      iconview iv4 = (iconview) findviewbyid(r.id.iconviewitem4);     iv4.settypeface(typeface.createfromasset(getcontext().getassets(), "icons.ttf"));     iv4.settext(icons[25]);      iconview iv5 = (iconview) findviewbyid(r.id.iconviewitem5);     iv5.settypeface(typeface.createfromasset(getcontext().getassets(), "icons.ttf"));     iv5.settext(icons[26]);      iconview iv6 = (iconview) findviewbyid(r.id.iconviewitem6);     iv6.settypeface(typeface.createfromasset(getcontext().getassets(), "icons.ttf"));     iv6.settext(icons[117]);              mleftpaddingrect = new rect(content.getpaddingleft(), content.getpaddingtop(), content.getpaddingright(), content.getpaddingbottom());     mleftbehindview = content;     return content; } 

you need give reference inflated layout. try views acessing inside setleftbehindcontentview method:

     e.g:         iconview iv5 = (iconview) content.findviewbyid(r.id.iconviewitem5); 

note: assuming view corresponding r.id.iconviewitems lies inside inflated layout file.