Trouble with Facebook - java.lang.RuntimeException: Unable to start activity ComponentInfo = ANDROID ISSUE -


i have no idea i'm doing..

i mean do, i'm not advanced guys, feel noob.

anyway, copied , pasted code facebook sdk developer site android.

here manifest

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.fbdps.brcr" android:versioncode="1" android:versionname="1.0" >  <uses-sdk     android:minsdkversion="8"     android:targetsdkversion="17" /> <uses-permission android:name="android.permission.internet"/>  <application     android:allowbackup="true"     android:icon="@drawable/ic_launcher"     android:label="@string/app_name"     android:theme="@style/apptheme" >     <activity         android:name="com.fbdps.brcr.mainactivity"         android:label="@string/app_name" >         <intent-filter>             <action android:name="android.intent.action.main" />              <category android:name="android.intent.category.launcher" />         </intent-filter>     </activity>     <meta-data android:value="@string/app_id"              android:name="com.facebook.sdk.applicationid,"/>     <activity android:label="@string/app_name" android:name="com.facebook.loginactivity"></activity> </application>  </manifest>

and here java

  package com.fbdps.brcr;   import android.os.bundle;   import android.app.activity;   import android.content.intent;   import android.widget.textview;  import com.facebook.*;  import com.facebook.model.*;   public class mainactivity extends activity {   @override  public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main);  // start facebook login session.openactivesession(this, true, new session.statuscallback() {    // callback when session changes state   @override   public void call(session session, sessionstate state, exception exception) {     if (session.isopened()) {        // make request /me api       request.executemerequestasync(session, new request.graphusercallback() {          // callback after graph api response user object         @override         public void oncompleted(graphuser user, response response) {           if (user != null) {             textview welcome = (textview) findviewbyid(r.id.welcome);             welcome.settext("hello " + user.getname() + "!");           }         }       });     }   } });   }     @override    public void onactivityresult(int requestcode, int resultcode, intent data) {   super.onactivityresult(requestcode, resultcode, data);   session.getactivesession().onactivityresult(this, requestcode, resultcode, data);  }  }

i can't make app work.. see picture below..

thanks in advance!!! enter image description here

here strings.xml 

<?xml version="1.0" encoding="utf-8"?> 

<string name="app_name">brcr</string> <string name="hello_world">hello world!</string> <string name="menu_settings">settings</string> <string name="app_id">158392974335182</string>


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