2d barcode generator c# free Creating basic view controllers in Objective-C

Printing QR Code in Objective-C Creating basic view controllers

Creating basic view controllers
Generate QR Code In Objective-C
Using Barcode encoder for iPhone Control to generate, create QR Code image in iPhone applications.
www.OnBarcode.com
Barcode Printer In Objective-C
Using Barcode encoder for iPhone Control to generate, create Barcode image in iPhone applications.
www.OnBarcode.com
Listing 13.4 An array of selective arrays is perfect for table creation
Code39 Generator In Objective-C
Using Barcode creation for iPhone Control to generate, create Code 39 image in iPhone applications.
www.OnBarcode.com
GTIN - 128 Encoder In Objective-C
Using Barcode maker for iPhone Control to generate, create GS1-128 image in iPhone applications.
www.OnBarcode.com
- (id)initWithCoder:(NSCoder *)decoder { self = [super initWithCoder:decoder];
Encode Code 128 In Objective-C
Using Barcode encoder for iPhone Control to generate, create Code 128 Code Set B image in iPhone applications.
www.OnBarcode.com
Create QR Code JIS X 0510 In Objective-C
Using Barcode creation for iPhone Control to generate, create Quick Response Code image in iPhone applications.
www.OnBarcode.com
colorList = [NSArray arrayWithObjects: [NSDictionary dictionaryWithObjectsAndKeys: @"brownColor",@"titleValue", [UIColor brownColor],@"colorValue",nil], [NSDictionary dictionaryWithObjectsAndKeys: @"orangeColor",@"titleValue", [UIColor orangeColor],@"colorValue",nil], [NSDictionary dictionaryWithObjectsAndKeys: @"purpleColor",@"titleValue", [UIColor purpleColor],@"colorValue",nil], [NSDictionary dictionaryWithObjectsAndKeys: @"redColor",@"titleValue", [UIColor redColor],@"colorValue",nil], nil]; [colorList retain];
Making Barcode In Objective-C
Using Barcode generator for iPhone Control to generate, create Barcode image in iPhone applications.
www.OnBarcode.com
European Article Number 8 Creation In Objective-C
Using Barcode encoder for iPhone Control to generate, create European Article Number 8 image in iPhone applications.
www.OnBarcode.com
return self; }
Generate QR Code In VS .NET
Using Barcode generation for Reporting Service Control to generate, create Quick Response Code image in Reporting Service applications.
www.OnBarcode.com
QR Code JIS X 0510 Generator In VS .NET
Using Barcode creation for ASP.NET Control to generate, create QR image in ASP.NET applications.
www.OnBarcode.com
This sort of setup should be done as part of an initialization method. Note that you ll be using initWithCoder: B, which is the required init method if you re working with an Interface Builder object (and it s an alternative to the view controller s viewDidLoad method). Any initWithCoder: method should call its parent C and return itself F, like a normal init. The array and dictionary creations are pretty simple D. The Apple class references contain complete information on how to create and manipulate these objects, but, in short, you can create an NSArray as a listing of objects ending in a nil, and you can create an NSDictionary using pairs of values and keys, ending in a nil. Here, you re creating an array containing four dictionaries, each of which will fill one line of your table. You also have to think a bit about memory management here. Because your array was created with a class factory method, it s going to get released when it goes out of scope. In order to use this array elsewhere in your class, you not only need to have defined it in your header file, but you also need to send it a retain message to keep it around E. You ll release it in your dealloc method, elsewhere in the class files.
Create Barcode In Visual Studio .NET
Using Barcode creator for .NET Control to generate, create Barcode image in VS .NET applications.
www.OnBarcode.com
Code 128B Generator In C#.NET
Using Barcode maker for .NET framework Control to generate, create Code 128C image in Visual Studio .NET applications.
www.OnBarcode.com
BUILDING YOUR TABLE CELLS
Encoding Universal Product Code Version A In Java
Using Barcode creator for Android Control to generate, create UPCA image in Android applications.
www.OnBarcode.com
EAN 128 Encoder In Visual Basic .NET
Using Barcode encoder for Visual Studio .NET Control to generate, create EAN / UCC - 13 image in .NET framework applications.
www.OnBarcode.com
Once you ve got a data backend set up for your table, you need to edit three methods in your table view controller file: two that define the table and one that fills it, as shown in listing 13.5. We ll explain each of these in turn.
Generate Code 39 Extended In None
Using Barcode printer for Online Control to generate, create Code 39 Full ASCII image in Online applications.
www.OnBarcode.com
Print Linear Barcode In Java
Using Barcode generator for Java Control to generate, create 1D Barcode image in Java applications.
www.OnBarcode.com
Listing 13.5 Three methods control how your table is created and runs
Universal Product Code Version A Creator In VB.NET
Using Barcode creator for VS .NET Control to generate, create UPC A image in Visual Studio .NET applications.
www.OnBarcode.com
Code 3 Of 9 Decoder In VS .NET
Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return 1; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
UPC A Drawer In None
Using Barcode generation for Font Control to generate, create UPC-A Supplement 2 image in Font applications.
www.OnBarcode.com
Read GS1 128 In C#.NET
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
The table view controller
return colorList.count; }
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *MyIdentifier = @"MyIdentifier"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier];
if (cell == nil) { cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:MyIdentifier] autorelease]; } cell.textColor= [[colorList objectAtIndex:indexPath.row] objectForKey:@"colorValue"]; cell.text = [[colorList objectAtIndex:indexPath.row] objectForKey:@"titleValue"]; return cell; }
All of these methods should appear by default in the table view controller subclass that you created, but you may need to make changes to some of them to accommodate the specifics of your table. The first method is numberOfSectionsInTableView: B. Tables can optionally include multiple sections, each of which has its own index of rows, and each of which can have a header and a footer. For this first example, you re creating a table with one section, but we re going to look at multiple sections before we finish this chapter. The second method, tableView:numberOfRowsInSection: C, reports the number of rows in this section. Here you ll return the size of the array that you created. Note that you ignore the section variable because you only have one. The third method, tableView:cellForRowAtIndexPath: D, takes the table set up by the previous two methods and fills its cells one at a time. Though this chunk of code looks intimidating, most of it will be sitting there waiting for you the first time you work with a table. In particular, the creation of UITableViewCell will be built in. All you need to do is set the values of the cell before it s returned. Here you use your NSDictionary to set the text color E and the text content F of the cell. Also note that this is your first use of the NSIndexPath data class. It encapsulates information on rows and sections. You may want to change more things than text content and color. Table 13.7 lists all of the cell features that you might want to muck with at this point.
Table 13.7 You can modify your table cells in a variety of ways. Summary Sets the cell text s font using UIFont Sets how the cell s text wraps using UILineBreakMode
Copyright © OnBarcode.com . All rights reserved.