I have an application with an EditText element on the main view. This means that when my application is loaded the soft keyboard appears per default.
EditText
I
In your AndroidManifest.xml:
AndroidManifest.xml
More details about windowSoftInputMode can be found here.
windowSoftInputMode
This setting will hide soft keyboard when user enters new Activity (even if EditText control gains the focus). Soft keyboard will be shown only when user clicks the edit box control.