title: Android App Runtime Error
body: <p>I have 2 classes for an Android project.
  The first class is the Activity and the second class is just a OnClickListener which implements the interface.</p>
  
  <p>If I run the project on my phone I always get an runtime error.
  Also I got the message:</p>
  
  <p>The specified activity does not exist! Getting the launcher activity.</p>
  
  <p>Here are my two classes</p>
  
  <p>SendActivity</p>
  
  <pre><code>package kops.sms;
  
  //import android.R;
  import android.app.Activity;
  
  import android.os.Bundle;
  import android.view.Menu;
  import android.widget.Button;
  
  public class SendActivity extends Activity {
  
  
  Button buttonSend= (Button) findViewById(R.id.buttonSend);
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_send);
  
      buttonSend.setOnClickListener(new ButtonListener());
  }
  
  
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
      // Inflate the menu; this adds items to the action bar if it is present.
      getMenuInflater().inflate(R.menu.send, menu);
      return true;
  }
  
  
  
  
  }
  </code></pre>
  
  <p>and the ButtonListener</p>
  
  <pre><code>package kops.sms;
  
  import android.view.View;
  import android.view.View.OnClickListener;
  
  public class ButtonListener implements OnClickListener {
  
       @Override
          public void onClick(View v)
          {
  
          }
  
  
  }
  </code></pre>
  
  <p>I don´t know what is wrong...</p>
  
  <p>I look forward to your replies! :)</p>