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POIphone App crashing due to Received memory warning even if i am releasing
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2012-10-31T11:24:06.153
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2012-10-31T13:06:43.837
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<p>Every time is go to the view memory in use is increasing .. even if i am saving images. And afetr sometime the app crashed due to low memory warning. can someone tel me the solution so that the image memory is not increased. </p> <pre><code> #import <UIKit/UIKit.h> #import "PatientStudiesViewController.h" #import "CareServices.h" @interface newImageComparison : UIViewController<UIScrollViewDelegate,ServerConnectionDelegate> { NSString *serverUrlStr; NSString *studyID; NSString *instID; NSString *urlEncodedKey; NSMutableArray *myCompareImage1; NSMutableArray *myCompareImage2; UIScrollView * _scrollView1; UIScrollView * _scrollView2; NSMutableArray *selectedStudyIDArr; NSMutableDictionary *SelectedImageTypeDict; NSMutableArray *selectedImagetypeTagsArr; BOOL isRightEyeSelectedAgain; BOOL isLeftEyeSelectedAgain; NSMutableArray *demoCompareODArr; NSMutableArray *demoCompareOSArr; CareServices *careServices; } -(void)prepareODImages_selectedStudyIDString1 :(NSString *)selectedIDString1; -(void)prepareOSImages_selectedStudyIDString2 :(NSString *)selectedIDString2; - (void)loadImageRightEyeImage:(NSMutableArray *)urlAndTagReference; - (void)loadImageLeftEyeImage:(NSMutableArray *)urlAndTagReference; @end #import "newImageComparison.h" #import "XMLParserForStudyDetails.h" #import "ColorSchemes.h" #import <CommonCrypto/CommonDigest.h> #import "mach/mach.h" @implementation newImageComparison - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; if (self) { // Custom initialization } return self; } - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } #pragma mark - View lifecycle - (void)viewDidLoad { careServices = [CareServices currentInstance]; careServices.delegate = self; NSUserDefaults *selectedStudy = [NSUserDefaults standardUserDefaults]; selectedStudyIDArr = [selectedStudy valueForKey:@"selectedStudyIDArray"]; NSUserDefaults *selectedImagetype = [NSUserDefaults standardUserDefaults]; SelectedImageTypeDict = [selectedImagetype valueForKey:@"imageTypeDict"]; NSUserDefaults *selectedImageTypeTags = [NSUserDefaults standardUserDefaults]; selectedImagetypeTagsArr = [selectedImageTypeTags valueForKey:@"selectedImageTypeTags"]; NSMutableArray *imageType = [[NSMutableArray alloc]init]; for (int count = 0; count <[selectedImagetypeTagsArr count]; count++) { [imageType addObject:[SelectedImageTypeDict valueForKey:[selectedImagetypeTagsArr objectAtIndex:count]]]; } self.view.backgroundColor = [UIColor blackColor]; [super viewDidLoad]; myCompareImage1 = [[NSMutableArray alloc]init]; myCompareImage2 = [[NSMutableArray alloc]init]; NSUserDefaults *realUrl = [NSUserDefaults standardUserDefaults]; serverUrlStr = [realUrl valueForKey:@"serverUrl"]; NSString *key; NSUserDefaults *keyD = [NSUserDefaults standardUserDefaults]; key = [keyD valueForKey:@"key"]; urlEncodedKey = (NSString *) CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, (CFStringRef)key, NULL, CFSTR(":/?#[]@!$&’()*+,;="), kCFStringEncodingASCII); NSUserDefaults *studyID_D = [NSUserDefaults standardUserDefaults]; studyID = [studyID_D valueForKey:@"studyID"]; NSUserDefaults *instID_D = [NSUserDefaults standardUserDefaults]; instID = [instID_D valueForKey:@"instID"]; NSMutableArray *selectedDateArray = [[NSUserDefaults standardUserDefaults]valueForKey:@"selectedDateArray"]; demoCompareODArr = [[NSMutableArray alloc]init]; demoCompareOSArr = [[NSMutableArray alloc]init]; UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(60, 2, 200, 20)]; label.backgroundColor = [UIColor clearColor]; label.text = [NSString stringWithFormat:@"%@/%@/%@",[selectedStudyIDArr objectAtIndex:0],[selectedDateArray objectAtIndex:0],[imageType objectAtIndex:0]]; label.font = [UIFont systemFontOfSize:15]; label.textAlignment = UITextAlignmentCenter; label.textColor = [UIColor greenColor]; [self.view addSubview:label]; [label release]; label = [[UILabel alloc]initWithFrame:CGRectMake(60, 208, 200, 20)]; label.text = [NSString stringWithFormat:@"%@/%@/%@",[selectedStudyIDArr objectAtIndex:1],[selectedDateArray objectAtIndex:1],[imageType objectAtIndex:1]]; label.font = [UIFont systemFontOfSize:15]; label.backgroundColor = [UIColor clearColor]; label.textColor = [UIColor greenColor]; label.textAlignment = UITextAlignmentCenter; [self.view addSubview:label]; [label release]; NSMutableDictionary *selectedDemoImagesDict = [[NSUserDefaults standardUserDefaults]valueForKey:@"selectedDemoImagesDict"]; if ([[imageType objectAtIndex:0] isEqualToString:@"OD"]) { [self prepareODImages_selectedStudyIDString1:[selectedStudyIDArr objectAtIndex:0]]; } else { isLeftEyeSelectedAgain = YES; [self prepareOSImages_selectedStudyIDString2:[selectedStudyIDArr objectAtIndex:0]]; } if ([[imageType objectAtIndex:1]isEqualToString:@"OS"]) { [self prepareOSImages_selectedStudyIDString2:[selectedStudyIDArr objectAtIndex:1]]; } else { isRightEyeSelectedAgain = YES; [self prepareODImages_selectedStudyIDString1:[selectedStudyIDArr objectAtIndex:1]]; } self.navigationItem.title = @"Image Comparsion"; // Do any additional setup after loading the view from its nib. } - (void)viewDidAppear:(BOOL)animated { UIImageView *imageView1 = [[UIImageView alloc]initWithFrame:CGRectMake(27,23,265,184)]; imageView1.image = [UIImage imageNamed:@"plainbg_3.png"]; [self.view addSubview:imageView1]; UIImageView *imageView2 = [[UIImageView alloc]initWithFrame:CGRectMake(27,228,265,184)]; imageView2.image = [UIImage imageNamed:@"plainbg_3.png"]; [self.view addSubview:imageView2]; _scrollView1 = [[UIScrollView alloc]initWithFrame:CGRectMake(33,30,252,172)]; _scrollView1.delegate = self; _scrollView1.backgroundColor = [UIColor clearColor]; _scrollView1.pagingEnabled = YES; _scrollView1.scrollEnabled = YES; [self.view addSubview:_scrollView1]; _scrollView2 = [[UIScrollView alloc]initWithFrame:CGRectMake(33,234,252,172)]; _scrollView2.delegate = self; _scrollView2.backgroundColor = [UIColor clearColor]; _scrollView2.pagingEnabled = YES; _scrollView2.scrollEnabled = YES; [self.view addSubview:_scrollView2]; int x_val = -252; int y_val = 0; float dis = 0; for (int seriesCount = 0; seriesCount <[myCompareImage1 count]; seriesCount++) { NSMutableArray *OD = [[NSMutableArray alloc]init]; OD = [myCompareImage1 objectAtIndex:seriesCount]; for (int count = 0; count <[OD count]; count++) { dis = dis+252; UIImageView *R_EyeImageView = [[UIImageView alloc]initWithFrame:CGRectMake(x_val+dis, y_val, 252, 172)]; R_EyeImageView.backgroundColor = [UIColor blackColor]; R_EyeImageView.tag = seriesCount *100+100+count; [_scrollView1 addSubview:R_EyeImageView]; UIActivityIndicatorView *activity = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge]; [activity setFrame:CGRectMake(R_EyeImageView.frame.size.width/2.3,R_EyeImageView.frame.size.height/2.2, 40, 40)]; activity.tag = seriesCount*100+100+count; [R_EyeImageView addSubview:activity]; [activity startAnimating]; [activity release]; [R_EyeImageView release]; } [self loadImageRightEyeImage:OD]; [OD release]; } _scrollView1.contentSize = CGSizeMake(dis, 0); dis = 0; for (int seriesCount = 0; seriesCount <[myCompareImage2 count]; seriesCount++) { NSMutableArray *OS = [[NSMutableArray alloc]init]; OS = [myCompareImage2 objectAtIndex:seriesCount]; for (int count = 0; count <[OS count]; count++) { dis = dis+252; UIImageView *L_EyeImageView = [[UIImageView alloc]initWithFrame:CGRectMake(x_val+dis, y_val, 252, 172)]; L_EyeImageView.backgroundColor = [UIColor blackColor]; L_EyeImageView.tag = seriesCount *100+100+count; [_scrollView2 addSubview:L_EyeImageView]; UIActivityIndicatorView *activity = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge]; [activity setFrame:CGRectMake(L_EyeImageView.frame.size.width/2.3,L_EyeImageView.frame.size.height/2.2, 40, 40)]; activity.tag = seriesCount*100+100+count; [L_EyeImageView addSubview:activity]; [activity startAnimating]; [activity release]; [L_EyeImageView release]; } [self loadImageLeftEyeImage:OS]; [OS release]; } _scrollView2.contentSize = CGSizeMake(dis, 0); [_scrollView1 release]; [_scrollView2 release]; [imageView1 release]; [imageView2 release]; } - (void)prepareODImages_selectedStudyIDString1:(NSString *)selectedIDString1 { NSMutableArray *arr = [[XMLParserForStudyDetails sharedManager].final_ImagesDict valueForKey:selectedIDString1]; NSMutableArray *imageIDArr = [[XMLParserForStudyDetails sharedManager].imageID_RefDict_3D valueForKey:selectedIDString1]; NSMutableArray *seriesID = [[XMLParserForStudyDetails sharedManager].SeriesRefID_Dict valueForKey:selectedIDString1]; for (int count = 0; count <[seriesID count]; count++) { NSMutableDictionary *imageDict = [arr objectAtIndex:0]; NSMutableArray *imageIDArr2 = [imageIDArr objectAtIndex:count]; NSString *seriesID1 = [seriesID objectAtIndex:count]; NSMutableArray *arr = [[NSMutableArray alloc]init]; NSMutableDictionary *imageDict2 = [imageDict valueForKey:seriesID1]; for (int count2 = 0; count2 <[imageIDArr2 count]; count2++) { NSString *str; NSMutableDictionary *imageDict3 = [imageDict2 valueForKey:[imageIDArr2 objectAtIndex:count2]]; if ([[imageDict3 valueForKey:@"imageType"] isEqualToString:@"image"]) { if ([[imageDict3 valueForKey:@"num_frames"]isEqualToString:@"1"]) { if ([[imageDict3 valueForKey:@"laterality"] isEqualToString:@"R"]) { str = [[NSString alloc]initWithFormat:@"http://%@/i2icareclientws/i2iCareAPI_Service.asmx/GetImage?key=%@&study_id=%@&series_id=%@&image_id=%@&image_level=3&format=&frame_number=&imageType=1",serverUrlStr,urlEncodedKey,selectedIDString1,seriesID1,[imageIDArr2 objectAtIndex:count2]]; [arr addObject:str]; [str release]; } } } } if (isRightEyeSelectedAgain == YES) { [myCompareImage2 addObject:arr]; isRightEyeSelectedAgain = NO; } else { [myCompareImage1 addObject:arr]; } [arr release]; } } - (void)prepareOSImages_selectedStudyIDString2:(NSString *)selectedIDString2 { NSMutableArray *arr = [[XMLParserForStudyDetails sharedManager].final_ImagesDict valueForKey:selectedIDString2]; NSMutableArray *imageIDArr = [[XMLParserForStudyDetails sharedManager].imageID_RefDict_3D valueForKey:selectedIDString2]; NSMutableArray *seriesID = [[XMLParserForStudyDetails sharedManager].SeriesRefID_Dict valueForKey:selectedIDString2]; for (int count = 0; count <[seriesID count]; count++) { NSMutableDictionary *imageDict = [arr objectAtIndex:0]; NSMutableArray *imageIDArr2 = [imageIDArr objectAtIndex:count]; NSString *seriesID1 = [seriesID objectAtIndex:count]; NSMutableArray *arr = [[NSMutableArray alloc]init]; NSMutableDictionary *imageDict2 = [imageDict valueForKey:seriesID1]; for (int count2 = 0; count2 <[imageIDArr2 count]; count2++) { NSString *str; NSMutableDictionary *imageDict3 = [imageDict2 valueForKey:[imageIDArr2 objectAtIndex:count2]]; if ([[imageDict3 valueForKey:@"imageType"] isEqualToString:@"image"]) { if ([[imageDict3 valueForKey:@"num_frames"]isEqualToString:@"1"]) { if ([[imageDict3 valueForKey:@"laterality"] isEqualToString:@"L"]) { str = [[NSString alloc]initWithFormat:@"http://%@/i2icareclientws/i2iCareAPI_Service.asmx/GetImage?key=%@&study_id=%@&series_id=%@&image_id=%@&image_level=3&format=&frame_number=&imageType=1",serverUrlStr,urlEncodedKey,selectedIDString2,seriesID1,[imageIDArr2 objectAtIndex:count2]]; [arr addObject:str]; [str release]; } } } } if (isLeftEyeSelectedAgain == YES) { [myCompareImage1 addObject:arr]; isLeftEyeSelectedAgain = NO; } else { [myCompareImage2 addObject:arr]; } [arr release]; } } - (void)loadImageRightEyeImage:(NSMutableArray *)urlAndTagReference { for (int count = 0; count <[myCompareImage1 count]; count ++) { for (int i = 0; i < [urlAndTagReference count]; i++) { NSString *imagePath = [urlAndTagReference objectAtIndex:i]; imagePath = [imagePath stringByReplacingOccurrencesOfString:@"amp;" withString:@""]; imagePath = [imagePath stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; NSString* documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; NSString *key = [self sha1:imagePath]; NSString *fileToSave = [documentsPath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.jpg",key]]; for ( UIImageView *imgView in _scrollView1.subviews) { if (imgView.tag == count *100+100+i) { for (UIActivityIndicatorView *activity in [imgView subviews]) { if ([activity isKindOfClass:[UIActivityIndicatorView class]]) { if (activity.tag == count *100+100+i) { BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:fileToSave]; if (!fileExists) { dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_LOW, 0ul); dispatch_async(queue, ^{ NSData *imageData=[NSData dataWithContentsOfURL:[NSURL URLWithString:imagePath]]; UIImage *image = [[UIImage alloc] initWithData:imageData]; NSData *jpegData = UIImageJPEGRepresentation(image,0.001); [[NSFileManager defaultManager] createFileAtPath:fileToSave contents:jpegData attributes:nil]; dispatch_sync(dispatch_get_main_queue(), ^{ imgView.image = image; [activity stopAnimating]; [activity removeFromSuperview]; }); }); }else{ UIImage *image = [UIImage imageWithContentsOfFile:fileToSave]; if(!image) image = [UIImage imageNamed:@"rest-blank-thumbnail.png"]; imgView.image = image; [activity removeFromSuperview]; } } } } } } } } } - (void)loadImageLeftEyeImage:(NSMutableArray *)urlAndTagReference { for (int count = 0; count <[myCompareImage2 count]; count ++) { for (int i = 0; i < [urlAndTagReference count]; i++) { NSString *imagePath = [urlAndTagReference objectAtIndex:i]; imagePath = [imagePath stringByReplacingOccurrencesOfString:@"amp;" withString:@""]; imagePath = [imagePath stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; NSString* documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; NSString *key = [self sha1:imagePath]; NSString *fileToSave = [documentsPath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.jpg",key]]; for ( UIImageView *imgView in _scrollView2.subviews) { if (imgView.tag == count *100+100+i) { for (UIActivityIndicatorView *activity in [imgView subviews]) { if ([activity isKindOfClass:[UIActivityIndicatorView class]]) { if (activity.tag == count *100+100+i) { BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:fileToSave]; if (!fileExists) { dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_LOW, 0ul); dispatch_async(queue, ^{ NSData *imageData=[NSData dataWithContentsOfURL:[NSURL URLWithString:imagePath]]; UIImage *image = [[UIImage alloc] initWithData:imageData]; NSData *jpegData = UIImageJPEGRepresentation(image,0.001); [[NSFileManager defaultManager] createFileAtPath:fileToSave contents:jpegData attributes:nil]; dispatch_sync(dispatch_get_main_queue(), ^{ imgView.image = image; [activity stopAnimating]; [activity removeFromSuperview]; }); }); }else{ UIImage *image = [UIImage imageWithContentsOfFile:fileToSave]; if(!image) image = [UIImage imageNamed:@"rest-blank-thumbnail.png"]; imgView.image = image; [activity removeFromSuperview]; } } } } } } } } } -(NSString*) sha1: (NSString *)str { const char *cstr = [str cStringUsingEncoding:NSUTF8StringEncoding]; NSData *data = [NSData dataWithBytes:cstr length:str.length]; uint8_t digest[CC_SHA1_DIGEST_LENGTH]; CC_SHA1(data.bytes, data.length, digest); NSMutableString *output = [NSMutableString stringWithCapacity:CC_SHA1_DIGEST_LENGTH * 2]; for(int i = 0; i < CC_SHA1_DIGEST_LENGTH; i++) [output appendFormat:@"%02x", digest[i]]; return output; } - (void)viewDidUnload { _scrollView1 = nil; _scrollView2 = nil; } - (void)dealloc { [myCompareImage1 release]; [myCompareImage2 release]; } </code></pre>
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<iphone><ios><memory-management><ios4><didreceivememorywarning>
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Iphone App crashing due to Received memory warning even if i am releasing
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