Add Four Values in Different Activities in Android Application
<p>I am a beginner in android. I have four stages (four activities). In activity one when you click on a button you have to store value. For example <code>counter1=3</code>. Every stage is like stage one. I am wondering if you can tell me how can I add these integer values together  and show up.</p>

<p>I want to add: counter1+counter2+counter3+counter4=score</p>

<p>How can I join these stages together?</p>
