Mono navigation - xamarin

Question

I just started out with mono and I've already gotten problems. I'm used to play with c# code and was told that mono would be easy for me, but no no. I simply want to start a new activity and close the one i just were using. I checked out some mono API examples, but they are simply too complicated for this task. It has to be some easier way of doing it. This is my first activity class:
[Activity(Label = "CryptotoDroid", MainLauncher = true, Icon = "#drawable/icon")]
public class Activity1 : Activity
{
EditText inputpassword;
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.Main);
Button button = FindViewById<Button>(Resource.Id.MyButton);
inputpassword = FindViewById<EditText>(Resource.Id.beforetext);
button.Click += delegate
{
if (inputpassword.Text == "Moo")
{
StartActivity(typeof(ActivityContacts));
}
};
}
}
This is what i tried, but the program crashes. I Simply want to make the program to start a new activity when the password is "moo".
The activity I want to start is:
[Activity(Label = "My Activity")]
public class ActivityContacts : Activity
{
protected override void OnCreate(Bundle bundle)
{
SetContentView(Resource.Layout.Main);
var contactgrid = FindViewById<GridView>(Resource.Id.gridview);
}
}
Later on, i would also like to fill out my gridview with all contacts in the phone, but that belongs to another topic.

Answer 1

Did you mean to set both activities' content views to the Main layout?
SetContentView(Resource.Layout.Main);
public void setContentView (View view)
Set the activity content to an explicit view. This view is placed directly into the activity's view hierarchy. It can itself be a complex view hierarchy. When calling this method, the layout parameters of the specified view are ignored. Both the width and the height of the view are set by default to MATCH_PARENT. To use your own layout parameters, invoke setContentView(android.view.View, android.view.ViewGroup.LayoutParams) instead.

Answer 2

For starting with MonoDroid, I recommend:
getting hold of one of the excellent books out there (Wally, Greg, Chris or others will be along with suggestions - I've personally yet to see a bad one so won't give a recommendation!)
try watching a couple of the Xaminar's on youTube -http://www.yourepeat.com/g/Xaminar
try building the Xamarin sample programs and then try adapting them - it's sometimes easier to adjust working programs than it is to start new ones (sometimes!)
try building new things just as you have above.
When you hit problems - as we all do - then please do ask questions here or on the Xamarin forums - people will help.
However, when you hit a crash or exception, please try:
Give us as much info as you can about the crash/exception - including there are some ways to get extra debug logs off of a phone or emulator - http://docs.xamarin.com/Android/Guides/Deployment,_Testing,_and_Metrics/Android_Debug_Log - these logs often contain important text which will help us help you diagnose the crash
If you are running under the VS2010, VS2012 or MonoDevelop debugging tools, try adding extra Console.WriteLine statements and/or use breakpoints - this can help you and us work out which line is causing the crash - or if the crash is occurring somewhere in setup before the code even runs.
Speaking personally, I believe Mono for Android does help experience C# devs exploit their skills on Android - but there's still new things to learn, and there are still embedded development frustrations to tackle and overcome (like these sort of crashes)