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Let us proceed to create the third and the fourth modules. in Software Implementation barcode 3/9 in Software Let us proceed to create the third and the fourth modules.




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Let us proceed to create the third and the fourth modules. generate, create code 39 extended none with software projects Data Matrix Encoding Data In this module, we will l 3 of 9 for None earn how to invoke the MasterProduct"s menu from the View of the RootViewController class (the first View that appears on launching the application). We will see how a Toolbar control is placed on the View and how it invokes an action method that subsequently displays the View of the MasterProduct"s menu..

Module to connect the MasterProduct"s menu to the rest of the project Editing the Stock Information The following are the ste ps involved in developing this module: 1. Defining the outlets and action methods in the header file: RootViewController.h.

2. Adding a Toolbar and Bar Button Item in the RootViewController class. 3.

Coding in the implementation file: RootViewController.m to invoke the View of the MasterProductinfoController class. 4.

Making the Toolbar to appear at the bottom of the View. For controlling the controls that we will be placing in the View through the code, we need to define the outlets and action methods for them. So, let"s start with that.

. Defining outlets and action methods in the header file To invoke the view of the MasterProductInfoController from the RootViewController, we modify the header file of the RootViewController to appear as shown next. Only the statements that are highlighted are added; the rest of the statements are the same as we saw in 7, Updating and Searching Records of Customers:. // // RootViewController.h prob #import "AddCustomerContr oller.h" #import "DisplayCustomerController.h" #import "MasterProductInfoController.

h" @interface RootViewController : UITableViewController <NSFetchedResultsControllerDelegate, AddCustomerControllerDelegate, DisplayCustomerControllerDelegate> { NSFetchedResultsController *fetchedResultsController; NSManagedObjectContext *managedObjectContext; IBOutlet UISearchBar *srchbar; IBOutlet UIToolbar *toolbr; } @property (nonatomic, retain) NSFetchedResultsController *fetchedResultsController; @property (nonatomic, retain) NSManagedObjectContext *managedObjectContext; @property(nonatomic, retain) UISearchBar *srchbar; @property(nonatomic, retain) IBOutlet UIToolbar *toolbr; -(IBAction)addCustomer; -(IBAction)showmasterinfo; @end [ 256 ]. 10 . In the preceding header f ile, we import the MasterProductInfoController class. Then an instance variable of the UIToolbar class is created: toolbr and is defined as outlets (which will be used for connecting to the Toolbar control that we will be placing in the View). The instance variable is defined as properties with the two attributes: retain and nonatomic for generating the accessors and mutators without any overhead code (when synthesized) and for keeping the objects retained to the mutators without being flushed from memory.

Also, an action method is declared with the name showmasterinfo, which will take us to the view of the MasterProductInfoController.. We need to add a toolbar Code 39 for None to the RootView controller and set its Bar Button Item control to invoke the action method: showmasterinfo that is supposed to display the view of the MasterProductInfoController. So, from the Resources group in the Xcode Project window, open the RootViewController.xib file in the Interface Builder.

We know that the View of the RootViewController already has a Navigation bar at the top. Now, we need a Toolbar control in the same View at the bottom. Having both the Navigation bar and Toolbar controls in one view results in a problem.

What is it Let us see.. When we have both the con trols: Navigation bar and Toolbar in the same View, we have overlapping problems, that is, the two controls overlap each other and we need to take some steps to adjust the Toolbar control at the bottom of the View as explained in the Making the Toolbar to appear at the bottom of the View section of this chapter.. Adding a Toolbar and a Bar Button Item in the RootViewController class Let us continue with our step of adding the Toolbar and Bar Button Item in the RootViewController class. Open the RootViewController.xib file in the Interface Builder and drag a Toolbar control from the Library window and drop it in the Documents window.

The Toolbar control comes with a default Bar Button Item control with the title: Item. Then, we connect the toolbr outlet (defined in the header file: RootViewController.h) to the Toolbar control (dropped in the Documents window).

. [ 257 ]. Editing the Stock Information To establish a connection Code39 for None between the toolbr outlet with the Toolbar control, select the File"s Owner in the Documents window and open the Connections Inspector. Under the heading: Outlets, we find an outlet: toolbr. Select the circle to the right of the outlet: toolbr and keeping the mouse button pressed, drag it to the Toolbar control dropped in the Documents window, as shown in the following screenshot:.

We change the title of th e Bar Button Item control in the toolbar by selecting it in the Toolbar control and setting its Title to Master Product Information from the Attributes Inspector. Also, drag-and-drop the Flexible Space Bar Button Item from the Windows, Views & Bars category of the Library window on both sides of the Bar Button Item control in the toolbar to align it at the center of the Toolbar, as shown in the following screenshot:. [ 258 ].
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