android - Adding a link to a website on my app error on -


trying add link twitter.com on app. app runs "unfortunately closes" when click follow link.

android.content.activitynotfoundexception: unable find explicit activity class {com.holyapp.danshinn.wingman_etiquette/com.holyapp.danshinn.wingman_etiquette.twitter}; have declared activity in androidmanifest.xml? @ android.app.instrumentation.checkstartactivityresult(instrumentation.java:1541) @ android.app.instrumentation.execstartactivity(instrumentation.java:1416) @ android.app.activity.startactivityforresult(activity.java:3404) @ android.app.activity.startactivityforresult(activity.java:3354) @ com.holyapp.danshinn.wingman_etiquette.wingmanlistactivity.twitter(wingmanlistactivity.java:89) @ com.holyapp.danshinn.wingman_etiquette.wingmanlistactivity.onoptionsitemselected(wingmanlistactivity.java:77) @ android.app.activity.onmenuitemselected(activity.java:2570)

i can see error not know how fix it. please help.

this code error pointing to

 @override     public boolean onoptionsitemselected(menuitem item) {         switch (item.getitemid()) {              case r.id.action_refresh: {                 updatetiplist();                 break;             }              case r.id.action_favorites: {                 showfavorites();                 break;             }              case r.id.action_new: {                 newtip();                 break;             }             case r.id.twitter: {                 twitter();                 break;                 }             }            return super.onoptionsitemselected(item);     }      private void twitter() {         intent = new intent(this, twitter.class);         startactivityforresult(a, 0);      } 

android.content.activitynotfoundexception: unable find explicit activity class {com.holyapp.danshinn.wingman_etiquette/com.holyapp.danshinn.wingman_etiquette.twitter}; have declared activity in androidmanifest.xml?

you should declare twitter class on androidmanifest.xml file. this:

<activity     android:name="com.holyapp.danshinn.wingman_etiquette.twitter"></activity>

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