我有一个空白屏幕,我单击相机按钮并拍摄照片,然后将该照片作为UIVIew出现在我的空白屏幕上,并且我将相机中的多个图像添加到黑屏。问题是有时我可以在空白屏幕上添加多个图像,但有时当我捕获图像时,并且空白屏幕上的所有图像都消失并只显示当前图像。 并在LOG中。它显示我收到内存警告。 这是我的代码。我想我现在正确地释放我的对象。但是当我最终添加[object release]时,我的应用程序崩溃了。IOS中的内存管理问题(接收到的内存警告)
-(void)AddImagesToCanvasWithGesture{
if(imageFromPicker.size.width > imageFromPicker.size.height || imageFromPicker.size.width == imageFromPicker.size.height)
{
holderView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 180, 160)];
}
else{
holderView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 160, 240)];
}
UIImageView *imageview = [[[UIImageView alloc] initWithFrame:[holderView frame]];
[imageview setImage:imageFromPicker];
//[imageview setTag:101];
//[holderView setTag:102];
//NSLog(@"Tag By Default %d",(arc4random()%100)+10);
[holderView setTag:(int)objectDelegate.tagForHolderView];
[imageview setTag:((int)objectDelegate.tagForHolderView)+1];
[holderView addSubview:imageview];
//[imageview canBecomeFirstResponder];
UIPinchGestureRecognizer *pinchRecognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(scale:)];
[pinchRecognizer setDelegate:self];
[holderView addGestureRecognizer:pinchRecognizer];
UIRotationGestureRecognizer *rotationRecognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotate:)];
[rotationRecognizer setDelegate:self];
[holderView addGestureRecognizer:rotationRecognizer];
UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(move:)];
[panRecognizer setMinimumNumberOfTouches:1];
[panRecognizer setMaximumNumberOfTouches:1];
[panRecognizer setDelegate:self];
[holderView addGestureRecognizer:panRecognizer];
UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapped:)];
[tapRecognizer setNumberOfTapsRequired:1];
[tapRecognizer setDelegate:self];
[holderView addGestureRecognizer:tapRecognizer];
UILongPressGestureRecognizer *gestureRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(gestureHandler:)];
[holderView addGestureRecognizer:gestureRecognizer];
[holderView.layer setBorderColor: [[UIColor whiteColor] CGColor]];
[holderView.layer setBorderWidth: 3.0];
[self.view addSubview:holderView];
objectDelegate.tagForHolderView+=2;
for(UIButton *b in self.view.subviews) {
if([b isKindOfClass:[UIButton class]]) {
[self.view bringSubviewToFront:b];
}
[self.view sendSubviewToBack:imageViewForBackground];
//[holderView setHidden:YES];
}
}
我该如何释放它们以及应该在哪里调用释放方法。
嗯,我做了,我已经发布了每个对象,但它仍然删除以前的图像从空白屏幕。 – Zohaib
你可以发布你的“空白屏幕”的代码?没有看到代码就很难知道原因。 – Atif