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    <p>Activities are started with <a href="http://developer.android.com/reference/android/content/Intent.html" rel="nofollow noreferrer">Intents</a>. Please read the <a href="http://developer.android.com/guide/topics/fundamentals.html" rel="nofollow noreferrer">Android Application Fundamentals</a> first and try the Hello World app :)</p> <p>I understood that you will use your separate Tester class at all cost ;) so I'm trying to adapt and help you out there. </p> <p>First of all, <strong>don't</strong> let your class inherit from Activity. This won't help you, cause this calls will probably not have any valid context. Activity somehow implements the <strong>template pattern</strong>, providing you key method like <code>onCreate(...)</code>, <code>onPause(...)</code> etc and is instantiated by the Android OS.</p> <p>If you still want to use the class, you have to pass in the context. Probably you're aiming for some MVC/MVP pattern structure, anyway.</p> <pre><code>public class Tester { private Context context; public Tester(Context context){ this.context = context; } public void test () { final Intent myIntent = new Intent(context, NewActivity.class); //guess this comes from somewhere, hope through a findViewById method thebutton.setOnClickListener( new OnClickListener() { public void onClick(View v) { context.startActivity(myIntent); } } )}; } } </code></pre> <p>This would be a proposed solution from my side. A problem I still see here is on <strong>how you retrieve the button</strong> in that <code>test()</code> method. In order to have that work properly you have to retrieve it from some View class (with <code>view.findViewByid(R.id.myButton)</code>) or to create it dynamically and associate it with the view during the <code>onCreate(...)</code> of your Activity (probably using an Inflater).</p>
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    1. COThe onclick(view v) is found in a separate class file. do I have to extend the class to activity to be able to use startactivity or theres another way?
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    2. COYou will need a Context to use startActivity: http://goo.gl/Wp60
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    3. COJust for curiousity: what's the reason of having the onClick event in a separate class? In your above code: I wouldn't extend from Activity, but rather if you need so, pass the Context of the activity in the constructor of your Tester class and then use the context to invoke actions like startActivity(..) etc.
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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