My activity open, but don't start

[yescalianti]

Hi,

I'm a novice programmer in Android, and I've made various programs with various functions.

Recently, I created a simple program that creates and manipulates a database.
But, one of the activities isn't working. I click on the button to open the activity, and then it open, but the visual don't appears. I made a log for it, and saw that the last log is after the call to activity (startActivity).
After this call, the activity is loaded, but the method OnCreate() is not used. The screen appears only black. The AndroidManifest is configured correctly, and the Eclipse IDE don't show any errors.

I need help.

Thanks.