codeswimmer

 (UIImage *)imageFromImage:(UIImage *)image inRect:(CGRect)rect {
    CGImageRef sourceImageRef = [image CGImage];
    CGImageRef newImageRef = CGImageCreateWithImageInRect(sourceImageRef, rect);
    UIImage *newImage = [UIImage imageWithCGImage:newImageRef];
    CGImageRelease(newImageRef);
    return newImage;
}

If you have implemented that function above. You can crop images using the code below (crop the image "whoeImage.png" to a rectangle (0,0,40,40)).

codeswimmer

NSLog(@"%s", __FUNCTION__);

codeswimmer

NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];

NSLog(@"Bundle Info: %@", infoDictionary);

codeswimmer

UIColorSystemColors has these values to choose from.

@interface UIColor (UIColorSystemColors)
+ (UIColor *)lightTextColor;                // for a dark background
+ (UIColor *)darkTextColor;                 // for a light background
+ (UIColor *)groupTableViewBackgroundColor;
+ (UIColor *)viewFlipsideBackgroundColor;
+ (UIColor *)scrollViewTexturedBackgroundColor __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_3_2);
+ (UIColor *)underPageBackgroundColor __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_5_0);
@end

codeswimmer

Basic Array Sort In Ascending Order.
[SomeArrayName sortUsingSelector:@selector(compare:)];

OR


SomeArrayName = [SomeArrayName sortedArrayUsingSelector:@selector(compare:)];Sorting In Descending Order

Sorting In Descending Order.
NSSortDescriptor *sortOrder = [NSSortDescriptor sortDescriptorWithKey: @"self" ascending: NO];

codeswimmer

Use [[NSBundle mainBundle] resourceURL] to gain a URL string of your local resource.

For example you have index.html in you bundle resource directory. To create an NSURL of that local html file to display on your UIWebView. Simply do this.

NSString *resourceURLString = [[NSBundle mainBundle] resourceURL];

resourceURLString will return something like this: file:/../AppName.app/

NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"%@index.html",resourceURLString]];

codeswimmer

Add first all required framework to gain access of your device Address Book.

AddressBook.framework and AddressBookUI.framework

Then import these framworks to your controller.

#import <AddressBook/AddressBook.h>
#import <AddressBookUI/AddressBookUI.h>

There are two ways to get your contacts. First is use the ABPeoplePickerNavigationController, the other is to use the ABAddressBookRef.

codeswimmer

for (UIView *myView in MainView.subviews) {
        [myView removeFromSuperview];
 }

codeswimmer

Check first if PLIST exist

NSArray *myPath = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory, NSUserDomainMask, YES); 
NSString *documentsDirectory = [myPath objectAtIndex:0]; 
NSString *myPlistPath = [documentsDirectory stringByAppendingPathComponent: [NSString stringWithFormat: @"%@.plist", plistName] ]; 
[myPlistPath retain];

// If it's not there, copy it from the bundle 
NSFileManager *fileManger = [NSFileManager defaultManager]; 
if ( ![fileManger fileExistsAtPath:myPlistPath] ) { 

codeswimmer

Create Thread

[NSThread detachNewThreadSelector:@selector(myMethod) toTarget:self withObject:nil];

Create a selector method called by our thread

- (void)myMethod { 
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; 
    // code here
    [pool release];