..:::Trio Hasim:::..

Resize UIImage

+ (UIImage *)imageWithImage:(UIImage *)image scaledToSize:(CGSize)newSize {
//UIGraphicsBeginImageContext(newSize);
UIGraphicsBeginImageContextWithOptions(newSize, NO, 0.0);
[image drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)];
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return newImage;
}

API to get current Address

http://maps.googleapis.com/maps/api/geocode/json?latlng=1.298564,103.853973&sensor=false

UIButton Edge Inset

CGFloat spacing = 10; // the amount of spacing to appear between image and title
tabBtn.imageEdgeInsets = UIEdgeInsetsMake(0, 0, 0, spacing);
tabBtn.titleEdgeInsets = UIEdgeInsetsMake(0, spacing, 0, 0);

Scroll Tableview to the top

NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
[tableView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionTop animated:YES];

Get Youtube Video ID

+ (NSString*) getVideoID:(NSString*)linkString
{
NSMutableString *predicateString = [[NSMutableString alloc] initWithFormat:@"%@", linkString];

NSString *regexStr = @"[a-zA-Z0-9_-]{10}";

NSError *error;
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:regexStr
options:NSRegularExpressionCaseInsensitive
error:&error];

__block NSString *retunString = @"";
[regex enumerateMatchesInString:predicateString options:0 range:NSMakeRange(0, [predicateString length]) usingBlock:^(NSTextCheckingResult *match, NSMatchingFlags flags, BOOL *stop){
NSRange matchRange = [match range];
matchRange.length = matchRange.length+1;
//NSLog(@"matchRange.location: %d",matchRange.location); //31
//NSLog(@"matchRange.length: %d",matchRange.length); //11
//NSLog(@"result: %@", [predicateString substringWithRange:matchRange]); //tTfj05VNT40
retunString = [predicateString substringWithRange:matchRange];
}];

return retunString;
}

Make a UIImage from a MKMapView or Other View

The improved function for retina display:

- (UIImage*) renderToImage
{
if(UIGraphicsBeginImageContextWithOptions != NULL)
{
UIGraphicsBeginImageContextWithOptions(mapView.frame.size, NO, 0.0);
} else {
UIGraphicsBeginImageContext(mapView.frame.size);
}
[mapView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}

UITextField align left margin and clear button

you can do it by overriding two methods:

- (CGRect)textRectForBounds:(CGRect)bounds;
- (CGRect)editingRectForBounds:(CGRect)bounds;
- (CGRect)clearButtonRectForBounds:(CGRect)bounds;
the first one to align the placeholder and the second one for the editable text, so here is the code following your first answer

@implementation MYTextField

- (CGRect)textRectForBounds:(CGRect)bounds {
CGRect inset = CGRectMake(bounds.origin.x + 10, bounds.origin.y, bounds.size.width - 10, bounds.size.height);
return inset;
}

- (CGRect)editingRectForBounds:(CGRect)bounds {
CGRect inset = CGRectMake(bounds.origin.x + 10, bounds.origin.y, bounds.size.width - 10, bounds.size.height);
return inset;
}

- (CGRect)clearButtonRectForBounds:(CGRect)bounds {
CGRect inset = CGRectMake(bounds.origin.x + 113, bounds.origin.y, bounds.size.width - 10, bounds.size.height);
return inset;
}

Get screen/application/status bar frame dimensions

CGRect rect;
// Get screen dimensions
rect = [[UIScreen mainScreen] bounds];
NSLog(@"Bounds: %1.0f, %1.0f, %1.0f, %1.0f", rect.origin.x, rect.origin.y, rect.size.width, rect.size.height);
// Get application frame dimensions (basically screen - status bar)
rect = [[UIScreen mainScreen] applicationFrame];
NSLog(@"App Frame: %1.0f, %1.0f, %1.0f, %1.0f", rect.origin.x, rect.origin.y, rect.size.width, rect.size.height);
// Get status bar frame dimensions
rect = [[UIApplication sharedApplication] statusBarFrame];
NSLog(@"Statusbar frame: %1.0f, %1.0f, %1.0f, %1.0f", rect.origin.x, rect.origin.y, rect.size.width, rect.size.height);

Testing POST Method in Mac

Open Terminal, insert this line

curl -X POST https://www.yourwebsite -d "Username=admin&Password=admin"

Scale and Resize image autofits

+(UIImage*)scaleAndRotateImage:(UIImage*)image maxRes:(int)kMaxResolution
{
//int kMaxResolution = 1024; // Or whatever
//int kMaxResolution = 480; // Or whatever
//int kMaxResolution = 960; // Or whatever

CGImageRef imgRef = image.CGImage;

CGFloat width = CGImageGetWidth(imgRef);
CGFloat height = CGImageGetHeight(imgRef);

CGAffineTransform transform = CGAffineTransformIdentity;
CGRect bounds = CGRectMake(0, 0, width, height);
if (width > kMaxResolution || height > kMaxResolution) {
CGFloat ratio = width/height;
if (ratio > 1) {
bounds.size.width = kMaxResolution;
bounds.size.height = bounds.size.width / ratio;
}
else {
bounds.size.height = kMaxResolution;
bounds.size.width = bounds.size.height * ratio;
}
}

CGFloat scaleRatio = bounds.size.width / width;
CGSize imageSize = CGSizeMake(CGImageGetWidth(imgRef), CGImageGetHeight(imgRef));
CGFloat boundHeight;
UIImageOrientation orient = image.imageOrientation;
switch(orient) {

case UIImageOrientationUp: //EXIF = 1
transform = CGAffineTransformIdentity;
break;

case UIImageOrientationUpMirrored: //EXIF = 2
transform = CGAffineTransformMakeTranslation(imageSize.width, 0.0);
transform = CGAffineTransformScale(transform, -1.0, 1.0);
break;

case UIImageOrientationDown: //EXIF = 3
transform = CGAffineTransformMakeTranslation(imageSize.width, imageSize.height);
transform = CGAffineTransformRotate(transform, M_PI);
break;

case UIImageOrientationDownMirrored: //EXIF = 4
transform = CGAffineTransformMakeTranslation(0.0, imageSize.height);
transform = CGAffineTransformScale(transform, 1.0, -1.0);
break;

case UIImageOrientationLeftMirrored: //EXIF = 5
boundHeight = bounds.size.height;
bounds.size.height = bounds.size.width;
bounds.size.width = boundHeight;
transform = CGAffineTransformMakeTranslation(imageSize.height, imageSize.width);
transform = CGAffineTransformScale(transform, -1.0, 1.0);
transform = CGAffineTransformRotate(transform, 3.0 * M_PI / 2.0);
break;

case UIImageOrientationLeft: //EXIF = 6
boundHeight = bounds.size.height;
bounds.size.height = bounds.size.width;
bounds.size.width = boundHeight;
transform = CGAffineTransformMakeTranslation(0.0, imageSize.width);
transform = CGAffineTransformRotate(transform, 3.0 * M_PI / 2.0);
break;

case UIImageOrientationRightMirrored: //EXIF = 7
boundHeight = bounds.size.height;
bounds.size.height = bounds.size.width;
bounds.size.width = boundHeight;
transform = CGAffineTransformMakeScale(-1.0, 1.0);
transform = CGAffineTransformRotate(transform, M_PI / 2.0);
break;

case UIImageOrientationRight: //EXIF = 8
boundHeight = bounds.size.height;
bounds.size.height = bounds.size.width;
bounds.size.width = boundHeight;
transform = CGAffineTransformMakeTranslation(imageSize.height, 0.0);
transform = CGAffineTransformRotate(transform, M_PI / 2.0);
break;

default:
[NSException raise:NSInternalInconsistencyException format:@"Invalid image orientation"];

}

UIGraphicsBeginImageContext(bounds.size);

CGContextRef context = UIGraphicsGetCurrentContext();

if (orient == UIImageOrientationRight || orient == UIImageOrientationLeft) {
CGContextScaleCTM(context, -scaleRatio, scaleRatio);
CGContextTranslateCTM(context, -height, 0);
}
else {
CGContextScaleCTM(context, scaleRatio, -scaleRatio);
CGContextTranslateCTM(context, 0, -height);
}

CGContextConcatCTM(context, transform);

CGContextDrawImage(UIGraphicsGetCurrentContext(), CGRectMake(0, 0, width, height), imgRef);
UIImage *imageCopy = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

//imageCopy= [[UIImage alloc] initWithData:UIImageJPEGRepresentation(imageCopy, 0.8)];

return imageCopy;
}