Modfiying Android Manifest

Modfiying Android Manifest

So I have been following a tutorial titled 31 days of Android. I am having
an issue with one of the tutorials. It calls for me to modify the
androidmanifest.xml file but when I do but it doesn't work. Everytime I
run the application it crushes after I press button 2. Here is the code
they wanted me to add
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:name="MyApplication">
and here is the code looks after I have added that code to my file.
<application android:icon="@drawable/icon"
android:label="@string/app_name" android:name="MyApplication">
I did not add the android:icon="@drawable/ic_launcher" because it gave me
an error which read "no resoucre found that matches the given name". Any
help would be appreciated.