To answer my own question:
First of all, in PreferenceScreen, you need to state:
<full.path.to.your.OwnLayoutClass
android:name="whatevever"
android:dialogLayout="@layout/your_own_layout" />
your_own_layout can be anything you'd like, linearlayout with of buttons, editTexts, according to your wishes.
Essential is the class representing your own preference Dialog. Here is a simple example of how to do it:
public class YourOwnLayoutClass extends DialogPreference {
private LinearLayout mView;
public YourOwnLayoutClass(Context context, AttributeSet attrs) {
super(context, attrs);
setPersistent(false);
setDialogLayoutResource(R.layout.your_own_layout);
}
@Override
protected void onBindDialogView(View view) {
super.onBindDialogView(view);
mView = (LinearLayout) view;
}
@Override
protected void onDialogClosed(boolean positiveResult) {
super.onDialogClosed(positiveResult);
if (positiveResult) {
// get value from editFields, do whatever you want here :)
// you can acces them through mView variable very easily
}
}
}
Important references:
I need to have a custom dialog in Preferences
Concise way of writing new DialogPreference classes?
Android: launch a custom Preference from a PreferenceActivity