Image processes in particular View using Async :-
In xib take one View n give reference of asyncimage
- (void)viewDidLoad
{
[super viewDidLoad];
scroller =[[CustomScrollBar alloc]initWithFrame:CGRectMake(0,44,
320,460)];
scroller.maximumZoomScale = 4.0;
scroller.minimumZoomScale = 1.0;
scroller.clipsToBounds = YES;
scroller.scrollEnabled = YES;
scroller.multipleTouchEnabled = YES;
scroller.userInteractionEnabled = YES;
scroller.showsHorizontalScrollIndicator = YES;
scroller.showsVerticalScrollIndicator = YES;
scroller.scrollsToTop = NO;
scroller.delegate = self;
scroller.del = self;
scroller.contentSize = CGSizeMake(scroller.frame.size.width,
scroller.frame.size.height);
float x = asyImg.bounds.size.width/2;
float y = (asyImg.bounds.size.height/2);
asyImg.center = CGPointMake(x, y);
[asyImg setFrame:CGRectMake(0,44, 320, 290)];
[scroller addSubview:asyImg];
self.view.clipsToBounds = YES;
[self.view addSubview:scroller];
[asyImg loadImageFromString:[objImage valueForKey:@"image"] dict:nil];
}
#pragma mark -
#pragma mark scrollView Delegate Methods
-(UIView*)viewForZoomingInScrollView:(UIScrollView *)scrollView {
return asyImg;
}
#pragma mark -
#pragma mark Touch Delegate Methods
- (void)touchesBeganScroll:(NSSet *)touches withEvent:(UIEvent *)event {
}
- (void)touchesMovedScroll:(NSSet *)touches withEvent:(UIEvent *)event {
}
- (void)touchesEndedScroll:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
if ([touch tapCount] == 1) {
[scroller setZoomScale:1.0];
[self setViewAnimation:CGRectMake(10, 65, 320, 350)];
}
}
-(void) setViewAnimation:(CGRect)frame {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.5];
asyImg.frame = self.view.frame;
scroller.contentSize = self.view.frame.size;
[UIView commitAnimations];
}
If we want to Post Image :-
-(void)imageUpload
{
request = [[[ASIFormDataRequest alloc] initWithURL:strUrl] autorelease];
[request setRequestMethod:@"POST"];
[request setTimeOutSeconds:120];
[request addRequestHeader:@"Content-Type" value:@"multipart/form-data"];
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
NSString *strUser = [prefs valueForKey:@"username"];
[strUser retain];
NSString * strUserLocal = [strUser stringByAppendingString:@".jpeg"];
NSString *imagePath = [[self applicationDocumentsDirectory] stringByAppendingPathComponent:strUserLocal];
[request setPostValue:@"png" forKey:@"type"];
[request setFile:fetchPath withFileName:imageName andContentType:@"image/ jpg" forKey:@"image"];
[request setUseCookiePersistence:NO];
[request setUseSessionPersistence:NO];
[request setDelegate:self];
[request setDidFinishSelector:@selector(requestFinished:)];
[request setDidFailSelector:@selector(requestFailed:)];
[request setShowAccurateProgress:YES];
[request startAsynchronous];
}
OR Other Way to Upload Photo :-
- (UIImage *)imageByScalingProportionallyToSize:(CGSize)targetSize {
UIImage *sourceImage = self;
UIImage *newImage = nil;
CGSize imageSize = sourceImage.size;
CGFloat width = imageSize.width;
CGFloat height = imageSize.height;
CGFloat targetWidth = targetSize.width;
CGFloat targetHeight = targetSize.height;
CGFloat scaleFactor = 0.0;
CGFloat scaledWidth = targetWidth;
CGFloat scaledHeight = targetHeight;
CGPoint thumbnailPoint = CGPointMake(0.0,0.0);
if (CGSizeEqualToSize(imageSize, targetSize) == NO) {
CGFloat widthFactor = targetWidth / width;
CGFloat heightFactor = targetHeight / height;
if (widthFactor < heightFactor)
scaleFactor = widthFactor;
else
scaleFactor = heightFactor;
scaledWidth = width * scaleFactor;
scaledHeight = height * scaleFactor;
// center the image
if (widthFactor < heightFactor) {
thumbnailPoint.y = (targetHeight - scaledHeight) * 0.5;
} else if (widthFactor > heightFactor) {
thumbnailPoint.x = (targetWidth - scaledWidth) * 0.5;
}
}
// this is actually the interesting part:
UIGraphicsBeginImageContext(targetSize);
CGRect thumbnailRect = CGRectZero;
thumbnailRect.origin = thumbnailPoint;
thumbnailRect.size.width = scaledWidth;
thumbnailRect.size.height = scaledHeight;
[sourceImage drawInRect:thumbnailRect];
newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
if(newImage == nil) NSLog(@"could not scale image");
return newImage ;
}
-(void)imageUpload
{
NSURL *strUrl = [NSURL URLWithString:[NSString stringWithFormat:@"%@? action=addComment",Server_URL_MOBICH]];
request = [[[ASIFormDataRequest alloc] initWithURL:strUrl] autorelease];
NSData *imageData = nil;
UIImage *image;
if (image !=nil) {
UIImage *newImage = [image imageByScalingProportionallyToSize:CGSizeMake(600, 600)];
imageData = UIImageJPEGRepresentation(newImage, 0.9);
[request setData:imageData forKey:@"image"];
[request setPostValue:@"png" forKey:@"type"];
[request setPostValue:@"ImageType" forKey:@"comment_type"];
}
[request setRequestMethod:@"POST"];
[request setTimeOutSeconds:120];
[request addRequestHeader:@"Content-Type" value:@"multipart/form-data"];
[request setUseCookiePersistence:NO];
[request setUseSessionPersistence:NO];
[request setDelegate:self];
[appDelegate showLoadingView];
[request setDidFinishSelector:@selector(requestFinished:)];
[request setDidFailSelector:@selector(requestFailed:)];
[request setShowAccurateProgress:YES];
[request startAsynchronous];
}
}
Way to Save Image in CoreData :-
-(void)btnBarSave
{
if(!self.objinsurance)
{
objinsurance =(Insurance *)[appDelegate.objHelper createObjectForEntity:Entity_Insurance];
}
objinsurance.name = txtName.text;
objinsurance.insurance_id = txtInsuranceId.text;
if (imageView.image != nil) {
UIImage *image = imageView.image;
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
NSString *strUser = [prefs valueForKey:@"username"];
[strUser retain];
NSString * strUserLocal = [objinsurance.insurance_id stringByAppendingString:@".png"];
NSString *imagePath = [[appDelegate applicationDocumentCacheDirectory] stringByAppendingPathComponent:strUserLocal];
NSLog(@"Path by Image To SAVE :::::>>>%@<<<<<<",imagePath);
NSData *data = [NSData dataWithData:UIImagePNGRepresentation(image)];
if(data != nil) {
[data writeToFile:imagePath atomically:YES];
NSLog(@">>>>>>>>>>>>>>>>>>> Image Going To Write <<<<<<<<<<<");
objinsurance.picture = imagePath;
}
else
{
[[NSFileManager defaultManager] removeItemAtPath:imagePath error:NULL];
NSLog(@">>>>>>>>>>>>>>>>>>> Error Writing Image File to Directory <<<<<<<<<<<");
}
}else{
NSLog(@"nil");
}
[appDelegate saveContext];
[appDelegate showAlertWithTitle:@"" message:@"Data Saved Successfully"];
}
To View Image from CoreData for edit:-
{
txtName.text = objinsurance.name;
NSData *data = [NSData dataWithContentsOfFile:objinsurance.picture];
imageView.image = [UIImage imageWithData:data];
}
DBHelper Classes :-
DBHelper.h
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
@interface DBHelper : NSObject {
}
DBHelper.m
@implementation DBHelper
AppDelegate *appDelegate;
-(id) init {
if((self = [super init])) {
appDelegate = [AppDelegate sharedAppDelegate];
}
return self;
}
#pragma mark -
#pragma mark - Creating Object
-(id)createObjectForEntity:(NSString *)entityName
{
if (entityName!=nil || [entityName isEqualToString:@""])
{
return [NSEntityDescription
insertNewObjectForEntityForName:entityName
inManagedObjectContext:appDelegate.managedObjectContext];
}
else{
return nil;
}
}
-(id)createObjectForEntity:(NSString *)entityName context:(NSManagedObjectContext *)aContext
{
if (entityName!=nil || [entityName isEqualToString:@""])
{
return [NSEntityDescription
insertNewObjectForEntityForName:entityName
inManagedObjectContext:aContext];
}
else{
return nil;
}
}
#pragma mark -
#pragma mark - Retrive Object
-(NSMutableArray*) getObjectsforEntity:(NSString *)strEntity ShortBy:(NSString *)strShort isAscending:(BOOL)ascending predicate:(NSPredicate *)predicate
{
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
NSEntityDescription *entity = [NSEntityDescription entityForName:strEntity inManagedObjectContext:appDelegate.managedObjectContext];
[fetchRequest setEntity:entity];
[fetchRequest setIncludesPendingChanges:NO];
if (strShort)
{
NSSortDescriptor *sort = [[NSSortDescriptor alloc] initWithKey:strShort ascending:ascending];
[fetchRequest setSortDescriptors:[NSArray arrayWithObject:sort]];
[sort release];
}
if (predicate)
{
[fetchRequest setPredicate:predicate];
}
NSError *error;
NSMutableArray *arrAllObjects = (NSMutableArray*)[appDelegate.managedObjectContext executeFetchRequest:fetchRequest error:&error];
[arrAllObjects retain];
[fetchRequest release];
return arrAllObjects;
}
#pragma mark -
#pragma mark path for Document Directory
-(NSString *)applicationDocumentsDirectory {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *basePath = ([paths count] > 0) ? [paths objectAtIndex:0] : nil;
return basePath;
}
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