Changes

== 67. Add Contact ===== 67.1. Create 'add' layout ===67.1.1. Right click on ''layout -> New -> Android XML File'' .<br/>67.1.2. Enter ''add.xml'' for the file name and check ''Layout'':<br/>67.1.3. Using ''Linear Layout'', create this layout for adding contact information:<br/>

67.1.4. This is the xml implementation:

=== 67.2. Create Add Contact Activity ===

67.2.1. Create a new class called ''AddContactActivity.java'' in the same package as the main activity file.

67.2.2. Add some fields to save the added information to 'Add Contact' by user.

67.2.3. On clicking the ''Save Contact'' button, the info from ''EditText''s will be assigned to the corresponding fields.

67.2.3. The activity will be finished by calling ''finish()'' function from which the ''super'' will be called. In finish(), a new ''Intent'' is created to be able to pass data back to the calling activity.

=== 67.3. Add Contact Activity to the Android Manifest ===67.3.1. Just add this line to the list of activities in ''AndroidManifest.xml''

=== 67.4. Implement Add Contact in the main activity class ===67.4.1. First step is to create an instance of ''Intent'' to pass the current object to the activity and then start the activity for the ''Add Contact'' when it's selected from the menu items.

67.4.2. In ''startActivityForResult()'', two things need to be checked first, ''resultCode'' and the name of the activity, if these two were fine, the new student with the added values will be added to the list of students, otherwise there will be an alert message displayed to the user.

== 67.5. Add Contact in Action ==67.5.1. Select the 'Add Contact' in the menu<br/>

67.5.2. Enter information of the new contact<br/>

67.5.3. The new contact will be appeared in the list of contacts.<br/>