我的 iPhone 应用程序从后台返回后崩溃。原因：UIImage问题
首先，我想说这个网站太棒了！它帮助我在创建 iPhone 应用程序时完成了很多事情。
现在，我的问题是：
中的 if/else 语句加载图像
当我启动我的应用程序时，我有一个 UIImageView，它根据-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event< /代码>
方法。这些图像的分配如下：
BG.image = someImage;
当然，BG是UIImageView，someImage是带有@property、@synthesis的iVar。 someImage 使用 viewDidLoad 中主包中的图像进行初始化：
- (void)viewDidLoad {
//init stuff from file
someImage = [UIImage imageNamed:@"FirstViewBG_5N.png"];
[super viewDidLoad];}
我的应用程序运行愉快，根据 touchBegan 加载图像（如上所述），但是！
当我的应用程序发送到后台并返回时，它会在第一次触摸时崩溃。
当我将： 替换
BG.image = someImage
为： 时，
BG.image = [UIImage imageNamed:@"FirstViewBG_5N.png"];
它运行得很愉快？！我认为 someImage 已被刷新或损坏？
我不想这样，因为 imageNamed 方法每次都会从磁盘读取，我认为这会导致性能问题？
我想我的问题很清楚了？就是这样：
1-为什么我的应用程序从后台返回后会崩溃 2-我该如何解决这个问题？
感谢您的所有帮助！ 谢谢！
First off, I want to say this site is AWESOME! and it helped me do lots of stuff while creating my iPhone app.
Now, my problem is:
When I launch my app, I have a UIImageView that loads an image depending on an if/else statements in
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
method. These images are assigned as follows:
BG.image = someImage;
of course, BG is the UIImageView, and someImage is an iVar with @property, @synthesis. someImage is initialized with an image from the main bundle in viewDidLoad:
- (void)viewDidLoad {
//init stuff from file
someImage = [UIImage imageNamed:@"FirstViewBG_5N.png"];
[super viewDidLoad];}
My app runs happily, loading images according to touchBegan (as mentioned), BUT!
When my app is sent to background and comes back, it crashes upon first touch.
When I replaced:
BG.image = someImage
with:
BG.image = [UIImage imageNamed:@"FirstViewBG_5N.png"];
it runs happily?! I think the someImage is flushed or corrupts?
I don't want to leave it like this because imageNamed method reads from disk every time, which will cause performance problems, i think?
I think my question is clear? It is that:
1- Why will my app crash after returning from backgroud
2- How do I solve this?
All your help is appreciated!
Thanks!
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“someImage”已发布。保留它
'someImage' got released. retain it
ps 小心在 dealloc 上释放它；）。
p.s. be careful to release it on dealloc ;).