Notes of a Developer

Step by step for starter developers…
1. Create a project in xCode with name “DragAndDrop” or any else…2. Add an element “NSImageView” on main view in the MainMenu.xib

Hi there! We are a group of iPhone / Android developers who have developed a suite of web services to assist us and other developers in building great apps.
After numerous projects we have become tired of having to set up the server scripts to do all the same things for different clients. Most of the [...]

Many people could not find this solution! It’s really very simple solution and it does not contain any private methods and functions. It’s based on the drawRect method and the simple manipulation with the title. If the title is specified, then the text of title displays, but if not, then displays the [...]

Presented simple and nice solution for radio buttons, based on the UIButton.
Add buttons on view of controller
for (int i = 0; i < 5; i++) {
        UIButton *but = [UIButton buttonWithType:UIButtonTypeCustom];
        [but setImage:[UIImage imageNamed:@"checkbox.png"] forState:UIControlStateNormal];
        [but setImage:[UIImage imageNamed:@"checkedbox.png"] forState:UIControlStateSelected];
        [but setFrame:CGRectMake(0, 0, 17, [...]

ToolbarSearch
This sample shows how to use a search field in a toolbar. When you start a search, a table view displaying recent searches matching the current search string is displayed in a popover.
New controller:
UIPopoverControllerDelegate

Create a navigation controller to contain the recent searches controller, and create the popover controller to contain the navigation controller.
UINavigationController *navigationController [...]

From Apple Site
Xcode/Developer Tools

Changing an iPhone Executable’s working directory from “Build Products directory” may cause the application not to install properly with the error message “The Info.plist for application at (null) specifies a CFBundleExecutable of (null), which does not exist.”
You may only use .png files for application icons for the [...]

Here is a little tip on how to tell if a string contains another string, using the underused data type NSRange.
NSRange gives the starting location and the length of a given value, and is often used with arrays and strings. On this occasion we will use it to find the range of a substring within [...]

Solution for change orientation with uitabbar and others exeptions.
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didOrientation:) name:@"UIDeviceOrientationDidChangeNotification" object:nil];

And method
- (void) didOrientation: (id)object {
   
    UIInterfaceOrientation interfaceOrientation = [[object object] orientation];
 
    if (interfaceOrientation == UIInterfaceOrientationPortrait || interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown) {
   
        self.view.transform = CGAffineTransformMakeRotation(0);
    } [...]