每次进入视图使用中的内存都在增加..即使我正在保存图像。并且由于内存不足警告，应用程序崩溃了。有人可以给我解决方案，以便不增加图像内存。
#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];
}
答案 0 :(得分：1)
如果你打开了Zombies（方案诊断），那么实际上什么也没有被删除。因此，在内存较少的设备上（如iPad 1），您将很快耗尽内存并获得内存警告。模拟器通常没有这个问题。
答案 1 :(得分：0)
您可以在XCode - Product |中使用Profiler查找内存泄漏主菜单中的配置文件。 然后选择内存 - ＆gt;泄漏。
另外，您可以使用Product |找到一些有趣的建议在XCode中分析。