xml - Android crashing nothing in logcat -

https://github.com/benireydman/slide_menu-slide_menu if see if can crash logs help.

i tested out , keeps crashing when run function.

i have removed function , ran app can certainty cause of it. put function involved in, left out detail unimportant.

public void function(){     if(this >= that1){         button1.setenabled(false);     } else {         button1.setenabled(true);     }     if(this >= that2){         button2.setenabled(false);     } else {         button2.setenabled(true);     }     if(this >= that3){         button3.setenabled(false);     } else {         button3.setenabled(true);     }     if(this >= that4){         button4.setenabled(false);     } else {         button4.setenabled(true);     } }  <selector xmlns:android="http://schemas.android.com/apk/res/android">      <item android:drawable="@drawable/buttongray"></item>     <item android:drawable="@drawable/buttonclick" android:state_pressed="true"></item>     <item android:drawable="@drawable/button" android:state_enabled="false"></item>  </selector> 

more code

<linearlayout                 android:layout_width="fill_parent"                 android:layout_height="wrap_content"                 android:orientation="vertical"                 android:weightsum="4">          <button             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_weight="1"             android:background="@drawable/selector_state2_xml"             android:id="@+id/upgbutton"             android:layout_gravity="center_horizontal" />          <button             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_weight="1"             android:background="@drawable/selector_state3_xml"             android:id="@+id/upgbutton1"             android:layout_gravity="center_horizontal" />          <button             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_weight="1"             android:background="@drawable/selector_state4_xml"             android:id="@+id/upgbutton2"             android:layout_gravity="center_horizontal" />          <button             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_weight="1"             android:background="@drawable/selector_state5_xml"             android:id="@+id/upgbutton3"             android:layout_gravity="center_horizontal" />               </linearlayout> 

and @ beginning of oncreateview

public void setbutton() {         button1 = (button) rootview.findviewbyid(r.id.upgbutton);         button2 = (button) rootview.findviewbyid(r.id.upgbutton1);         button3 = (button) rootview.findviewbyid(r.id.upgbutton2);         button4 = (button) rootview.findviewbyid(r.id.upgbutton3);     } 

code fragment

function called cookiechange

view.onclicklistener mstartlistener = new view.onclicklistener() {         public void onclick(view v) {             if (loop == 0) {                 mchronometer.setbase(systemclock.elapsedrealtime());                 mchronometer.start();                 starttime = system.currenttimemillis();                 loop++;             } else if (loop == 1) {                 millis = system.currenttimemillis()-starttime;                 mchronometer.stop();                 context context = getactivity().getapplicationcontext();                 charsequence text = "your time is: " + (millis/1000);                 int duration = toast.length_short;                 toast toast = toast.maketext(context, text, duration);                 toast.setgravity(gravity.bottom, 0, 25);                 toast.show();                 cookiestr();                 loop++;             } else if (loop == 2) {                 mchronometer.setbase(systemclock.elapsedrealtime());                 cookiecalc();                 textview mytext = (textview) rootview.findviewbyid(r.id.edittext2);                 mytext.settext("= " + cookies);                 textview mytext2 = (textview) rootview.findviewbyid(r.id.edittext);                 mytext2.settext("stop watch close possible 5");                 cookiechange();                 loop = 0;             }         }     };