когда я тестировал свое приложение в инструментах на утечку памяти, я ничего не нашел (запуская с помощью симулятора). Но когда я запускаю его на мобильном телефоне, а затем проверяю, в объектах UIKit много утечек. Это происходит в каждом представлении. В симуляторе такие утечки не отображаются.
Ниже приведен скриншот прибора, на котором произошла утечка.
Когда я перешел на secondViewController из HomeView, утечек не обнаружено. Если снова вернуться домой, эти многочисленные утечки обнаружены. Итак, означает ли это, что я должен освободить/обнулить все объекты пользовательского интерфейса, которые я использовал в этом втором представлении. К вашему сведению, ниже приведены объекты пользовательского интерфейса, которые я использовал во secondView.
1.Two Background UIImageView
2.One TitleBar UIImageView
3.3 UIButtons(Back,left and right button for iCarousel)
4.One iCarousel view
5.UIPageController(For this I have used a third Party code SMPageControl)
6.One title label.
Примечание. У меня не код ARC.
Кто-нибудь сталкивался с этой проблемой раньше. Как я могу решить эту проблему, так как у меня есть эта проблема в каждом представлении в моем приложении. Из-за этого мое приложение часто получает память и часто дает сбой.
Спасибо.
Ниже приведен мой файл реализации этого представления.
РЕДАКТИРОВАТЬ1:
@implementation CatalogueViewController
@synthesize deptCarousel = _deptCarousel;
@synthesize carouselItems = _carouselItems;
@synthesize categorymAr = _categorymAr;
@synthesize spacePageControl = _spacePageControl;
@synthesize wrap;
- (void)dealloc {
_deptCarousel = nil;
[_categorymAr release];
_categorymAr = nil;
_deptCarousel.delegate = nil;
_deptCarousel.dataSource = nil;
[_deptCarousel release];
[_carouselItems release];
[viewGesture release];
viewGesture = nil;
[_spacePageControl release];
_spacePageControl = nil;
imgViewBG = nil;
imgViewBG2 = nil;
btnPrev = nil;
btnNext = nil;
// [self releaseObjects];
[super dealloc];
}
- ( IBAction) btnBackClicked {
[self.navigationController popViewControllerAnimated:YES];
}
- (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
{
[super viewDidLoad];
self.title = NSLocalizedString(@"catalogue", @"Catalogue");
// Do any additional setup after loading the view from its nib.
_deptCarousel.type = iCarouselTypeLinear;
_deptCarousel.scrollSpeed = 0.3f;
_deptCarousel.bounceDistance = 0.1f;
_deptCarousel.scrollToItemBoundary = YES;
_deptCarousel.stopAtItemBoundary = YES;
[_deptCarousel setScrollEnabled:NO];
UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeNext:)];
swipeLeft.direction = UISwipeGestureRecognizerDirectionLeft;
[viewGesture addGestureRecognizer:swipeLeft];
[swipeLeft release];
UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipePrev:)];
swipeRight.direction = UISwipeGestureRecognizerDirectionRight;
[viewGesture addGestureRecognizer:swipeRight];
[swipeRight release];
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];
[viewGesture addGestureRecognizer:singleTap];
[singleTap release];
_carouselItems = [[NSMutableArray alloc] initWithCapacity:1];
_categorymAr = [[NSMutableArray alloc] initWithCapacity:1];
[self addCatalogues];
_spacePageControl.numberOfPages = [_categorymAr count];
[_spacePageControl setPageIndicatorImage:[UIImage imageNamed:IS_IPAD?@"Marker1.fw.png" : @"Markeri.png"]];
[_spacePageControl setCurrentPageIndicatorImage:[UIImage imageNamed:IS_IPAD?@"Marker-Highlight.png" : @"Marker-Highlight_i.png"]];
[_spacePageControl addTarget:self action:@selector(spacePageControl:) forControlEvents:UIControlEventValueChanged];
}
- (void)spacePageControl:(SMPageControl *)sender{
[_deptCarousel scrollToItemAtIndex:sender.currentPage animated:YES];
}
- ( void ) addCatalogues {
[_categorymAr addObjectsFromArray:[[DBModel database] categoryList]];
for (int i = 0; i < [_categorymAr count]; i++) {
[_carouselItems addObject:[NSNumber numberWithInt:i]];
}
[_deptCarousel reloadData];
}
- (void)viewDidUnload{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[self phoneType];
[super viewWillAppear:animated];
if (IS_IPAD) {
UIInterfaceOrientation statusBarOrientation = [[UIApplication sharedApplication] statusBarOrientation];
[self handleOrientation:statusBarOrientation];
}
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- ( void ) phoneType{
if(!IS_IPAD){
if(IS_IPHONE5){
imgViewBG.image = [UIImage imageNamed:@"Background5_5.jpg"];
imgViewBG.center = CGPointMake(162,265);
imgViewBG2.image = [UIImage imageNamed:@"Background11_5.png"];
_spacePageControl.center = CGPointMake(160, 478);
_deptCarousel.center = CGPointMake(160, 355);
viewGesture.center = CGPointMake(160, 355);
btnPrev.center = CGPointMake(25, 355);
btnNext.center = CGPointMake(295, 355);
}
else{
imgViewBG.image = [UIImage imageNamed:@"Background5.jpg"];
imgViewBG2.image = [UIImage imageNamed:@"Background9.png"];
}
}
}
-(void)textFieldDidBeginEditing:(UITextField *)textField{
textFieldSearch.placeholder = @"";
UIButton *clearButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 20, 20)];
[clearButton setImage:[UIImage imageNamed:IS_IPAD?@"Btn_X_Large.fw.png":@"Btn_X.fw.png"] forState:UIControlStateNormal];
[clearButton addTarget:self action:@selector(btnClearTextField) forControlEvents:UIControlEventTouchUpInside];
[textFieldSearch setRightViewMode:UITextFieldViewModeAlways];
[textFieldSearch setRightView:clearButton];
[clearButton release];
}
-(void)textFieldDidEndEditing:(UITextField *)textField{
[textFieldSearch setRightView:nil];
if ([textFieldSearch.text isEqualToString:@""]) {
textFieldSearch.placeholder = NSLocalizedString(@"hud_search_for_a_product_here",@"");
}
}
-(IBAction)btnClearTextField{
textFieldSearch.text = @"";
}
- (NSUInteger)supportedInterfaceOrientations
{
return UIInterfaceOrientationMaskAll;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
if (IS_IPAD) {
return YES;
} else {
return (interfaceOrientation == UIInterfaceOrientationPortrait || interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown);
}
}
- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation )toInterfaceOrientation duration:(NSTimeInterval)duration{
if (IS_IPAD) {
[self handleOrientation:toInterfaceOrientation];
}
}
- ( void ) handleOrientation:(UIInterfaceOrientation )toInterfaceOrientation {
if (toInterfaceOrientation == UIInterfaceOrientationPortrait || toInterfaceOrientation == UIInterfaceOrientationPortraitUpsideDown) {
imgViewBG.image = [UIImage imageNamed:@"Background_Catalogue_P.jpg"];
imgViewBG2.image = [UIImage imageNamed:@"Background_Overlay_P.fw.png"];
btnPrev.center = CGPointMake(90, 640);
btnNext.center = CGPointMake(677, 640);
textFieldSearch.frame = CGRectMake(187, 54, 418, 25);
_deptCarousel.frame = CGRectMake(235, 250, 300, 800);
_spacePageControl.center = CGPointMake(385, 920);
viewGesture.center = CGPointMake(385, 658);
}else {
imgViewBG.image = [UIImage imageNamed:@"Background_Catalogue_L.jpg"];
imgViewBG2.image = [UIImage imageNamed:@"Background_Overlay_L.fw.png"];
btnPrev.center = CGPointMake(54, 385);
btnNext.center = CGPointMake(640, 385);
textFieldSearch.frame = CGRectMake(240, 55, 567, 25);
_deptCarousel.frame = CGRectMake(50, 250, 600, 300);
_spacePageControl.center = CGPointMake(346, 660);
viewGesture.center = CGPointMake(347, 405);
}
}
- ( IBAction )btnDepartmentClicked:(id)sender {
int btnTag = [sender tag];
ProductCategoriesViewController *productView = [[ProductCategoriesViewController alloc] initWithNibName:@"ProductCategoriesView" bundle:nil];
if ( btnTag == 0 ) {
[productView setStrTitle:NSLocalizedString(@"women", @"Women")];
}else if ( btnTag == 1 ) {
[productView setStrTitle:NSLocalizedString(@"men", @"Men")];
} else {
[productView setStrTitle:NSLocalizedString(@"sports", @"Sports")];
}
[self.navigationController pushViewController:productView animated:YES];
[productView release];
}
- ( BOOL ) textFieldShouldReturn:( UITextField * )textField {
[textField resignFirstResponder];
[Flurry logEvent:@"Product searched" withParameters:[NSDictionary dictionaryWithObjectsAndKeys:textField.text,@"1", nil]];
[self productSearch:textField.text isBar:NO isQR:NO];
return YES;
}
- ( void ) productSearch:( NSString * )_searchText isBar:( BOOL )_isBar isQR:( BOOL )_isQr {
if ([_searchText isEqualToString:@""]) {
return;
}
NSMutableArray *ProductList = [[NSMutableArray alloc] init];
[ProductList addObjectsFromArray:[[DBModel database] productSearch:_searchText isBar:_isBar isQR:_isQr]];
if ( [ProductList count] == 0 ) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"product", @"")
message:NSLocalizedString(@"cannot_find_product", @"")
delegate:nil
cancelButtonTitle:NSLocalizedString(@"ok", @"")
otherButtonTitles:nil];
[alert show];
[alert release];
} else {
GeneralProductListViewController *generalProductList = [[GeneralProductListViewController alloc] initWithNibName:IS_IPAD?@"GeneralProductListView~iPad": @"GeneralProductListView" bundle:nil];
[generalProductList setMArProducts:ProductList];
[self.navigationController pushViewController:generalProductList animated:YES];
[generalProductList release];
}
[ProductList release];
}
-(IBAction) spin:(id)sender {
if([sender tag]==0)
{
[_deptCarousel scrollToItemAtIndex:[self.deptCarousel currentItemIndex]+1 animated:YES];
// [_deptCarousel scrollByNumberOfItems:1 duration:2.0];
}
else{
[_deptCarousel scrollToItemAtIndex:[self.deptCarousel currentItemIndex]-1 animated:YES];
}
}
-(void)swipeNext:(UISwipeGestureRecognizer *)recognizer{
[_deptCarousel scrollToItemAtIndex:[self.deptCarousel currentItemIndex]+1 animated:YES];
}
-(void)swipePrev:(UISwipeGestureRecognizer *)recognizer{
[_deptCarousel scrollToItemAtIndex:[self.deptCarousel currentItemIndex]-1 animated:YES];
}
-(void) handleSingleTap:(UITapGestureRecognizer *)recognizer{
if ([_categorymAr count] > 0) {
ProductCategoriesViewController *prodCatView = [[ProductCategoriesViewController alloc] initWithNibName:IS_IPAD ?
@"ProductCategoriesView~iPad" : @"ProductCategoriesView" bundle:nil];
Category *categoryObj = [_categorymAr objectAtIndex:[self.deptCarousel currentItemIndex]];
[prodCatView setStrTitle:categoryObj.categoryName];
[prodCatView setCategoryId:categoryObj.categoryId];
[Flurry logEvent:@"Category List" withParameters:[NSDictionary dictionaryWithObjectsAndKeys:categoryObj.categoryName,[NSString stringWithFormat:@"%d",categoryObj.categoryId], nil]];
[self.navigationController pushViewController:prodCatView animated:YES];
[prodCatView release];
}
}
//-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
// pageControl.currentPage = [self.deptCarousel currentItemIndex] ;
//}
#pragma mark
#pragma mark NavigationBarViewDelegate metho
- ( void ) navigationBackClicked {
[self.navigationController popViewControllerAnimated:YES];
}
#pragma mark -
#pragma mark iCarousel methods
- (NSUInteger)numberOfItemsInCarousel:(iCarousel *)carousel
{
return [_carouselItems count];
}
- (NSUInteger)numberOfVisibleItemsInCarousel:(iCarousel *)carousel
{
//limit the number of items views loaded concurrently (for performance reasons)
return NUMBER_OF_VISIBLE_ITEMS;
}
- (UIView *)carousel:(iCarousel *)carousel viewForItemAtIndex:(NSUInteger)index
{
Category *categoryObj = [_categorymAr objectAtIndex:index];
//create a numbered view
UIView *view = nil;
NSString *imagePath = [[APP_CACHES_DIR stringByAppendingPathComponent:@"catalogues"] stringByAppendingString:[NSString stringWithFormat:@"/%d.jpg", categoryObj.categoryId]];
if (![[NSFileManager defaultManager] fileExistsAtPath:imagePath]) {
view = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:IS_IPAD?@"Gallery Placeholder.png":@"Gallery Placeholder.png"]] autorelease];
} else {
view = [[[UIImageView alloc] initWithImage:[UIImage imageWithContentsOfFile:[[APP_CACHES_DIR stringByAppendingPathComponent:@"catalogues"] stringByAppendingString:[NSString stringWithFormat:@"/%d.jpg", categoryObj.categoryId]]]] autorelease];
}
if (IS_IPAD) {
view.frame = CGRectMake(0, 0, 420, 420);
} else {
view.frame = CGRectMake(0, 0, 200, 200);
}
// UILabel *label = [[[UILabel alloc] initWithFrame:CGRectMake(view.bounds.origin.x, view.bounds.origin.y+view.bounds.size.height, view.bounds.size.width, 44)] autorelease];
// label.text = categoryObj.categoryName;
// label.textColor = [UIColor blackColor];
// label.backgroundColor = [UIColor clearColor];
// label.textAlignment = UITextAlignmentCenter;
// label.font = [UIFont fontWithName:@"Helvetica-Bold" size:IS_IPAD?26:14];
// [view addSubview:label];
return view;
}
- (NSUInteger)numberOfPlaceholdersInCarousel:(iCarousel *)carousel
{
//note: placeholder views are only displayed on some carousels if wrapping is disabled
return INCLUDE_PLACEHOLDERS? 2: 0;
}
- (UIView *)carousel:(iCarousel *)carousel placeholderViewAtIndex:(NSUInteger)index
{
//create a placeholder view
UIView *view = [[[UIImageView alloc] initWithImage:[UIImage imageNamed:@""]] autorelease];
UILabel *label = [[[UILabel alloc] initWithFrame:view.bounds] autorelease];
label.text = (index == 0)? @"[": @"]";
label.backgroundColor = [UIColor clearColor];
label.textAlignment = UITextAlignmentCenter;
label.font = [label.font fontWithSize:50];
_spacePageControl.currentPage = index;
// [view addSubview:label];
return view;
}
- (CGFloat)carouselItemWidth:(iCarousel *)carousel
{
//usually this should be slightly wider than the item views
return ITEM_SPACING;
}
- (CATransform3D)carousel:(iCarousel *)_carousel transformForItemView:(UIView *)view withOffset:(CGFloat)offset
{
//implement 'flip3D' style carousel
//set opacity based on distance from camera
view.alpha = 1.0 - fminf(fmaxf(offset, 0.0), 1.0);
//do 3d transform
CATransform3D transform = CATransform3DIdentity;
transform.m34 = _deptCarousel.perspective;
transform = CATransform3DRotate(transform, M_PI / 8.0, 0, 1.0, 0);
return CATransform3DTranslate(transform, 0.0, 0.0, offset * _deptCarousel.itemWidth);
}
- (BOOL)carouselShouldWrap:(iCarousel *)carousel
{
//wrap all carousels
// return NO;
return wrap;
}
- (void)carousel:(iCarousel *)carousel didSelectItemAtIndex:(NSInteger)index {
if (index == [self.deptCarousel currentItemIndex]) {
ProductCategoriesViewController *prodCatView = [[ProductCategoriesViewController alloc] initWithNibName:IS_IPAD ?
@"ProductCategoriesView~iPad" : @"ProductCategoriesView" bundle:nil];
Category *categoryObj = [_categorymAr objectAtIndex:index];
[prodCatView setStrTitle:categoryObj.categoryName];
[prodCatView setCategoryId:categoryObj.categoryId];
[Flurry logEvent:@"Category List" withParameters:[NSDictionary dictionaryWithObjectsAndKeys:categoryObj.categoryName,[NSString stringWithFormat:@"%d",categoryObj.categoryId], nil]];
[self.navigationController pushViewController:prodCatView animated:YES];
[prodCatView release];
}
}
-(void) carouselDidScroll:(iCarousel *)carousel{
// [_deptCarousel scrollToItemAtIndex:[self.deptCarousel currentItemIndex]+3 animated:YES];
// [_deptCarousel scrollByNumberOfItems:1 duration:1];
}
- (void)carouselCurrentItemIndexUpdated:(iCarousel *)carousel{
_spacePageControl.currentPage = [self.deptCarousel currentItemIndex];
}
- ( IBAction ) myCart {
if ( [[DBModel database] isShoppingListEmpty] ) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"at_shopping_cart", @"")
message:NSLocalizedString(@"amsg_shopping_cart_empty", @"")
delegate:nil cancelButtonTitle:NSLocalizedString(@"ok", @"") otherButtonTitles:nil];
[alert show];
[alert release];
return;
}
MyCartViewController *myCartView = [[MyCartViewController alloc] initWithNibName:IS_IPAD ? @"MyCartView~iPad" : @"MyCartView" bundle:nil];
[self.navigationController pushViewController:myCartView animated:YES];
[myCartView release];
}
Product → Analyze)? - person Andreas Ley schedule 15.07.2013