java - Android app button not working -

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i have used snippet of code in few other projects, cannot understand why not work here. simple button changes activities. code giving error message: cannot resolve symbol "setonclicklistener"

import android.content.intent; import android.support.v7.app.appcompatactivity; import android.os.bundle; import android.view.view; import android.widget.adapterview; import android.widget.arrayadapter; import android.widget.button; import android.widget.spinner;   public class mainactivity extends appcompatactivity implements adapterview.onitemselectedlistener {  public static string value2; public static string value3; public static string value4; public static string value5; public static string value6; public static string value7; public static string value8; public spinner spinnermath; public spinner spinnerenglish; public spinner spinnerhistory; public spinner spinnerscience; public spinner spinnerlanguage; public spinner spinnerreligion; public spinner spinnerseventh; public button button = (button) findviewbyid(r.id.button);  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);      button.setonclicklistener(new view.onclicklistener() {     @override     public void onclick(view view) {          intent intent = new intent(getbasecontext(), main2activity.class);         startactivity(intent);     } }); }

any appreciated.

without seeing more code it's hard tell, i'm suspicious of 'this' is:

intent intent = new intent(this, main2activity.class); try

intent intent = new intent(getbasecontext(), main2activity.class);

or similar, unless you've taken account. otherwise, clicklistener code looks me.


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