blocks|key|921149|text|尝尝这个|type|unstyled|depth|inlineStyleRanges|entityRanges|data|921150|UIImagePickerController+*picker+=+[[UIImagePickerController+alloc]+init];
picker.delegate+=+self;
picker.sourceType+=+UIImagePickerControllerSourceTypePhotoLibrary;
[self+presentModalViewController:picker+animated:YES];
[picker+release];|code-block|syntax|javascript|921151|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

try this

<pre><code>UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentModalViewController:picker animated:YES];
[picker release];
</code></pre>

blocks|key|441576|text|由于您已经给它自动释放选项，它将被添加到自动释放池.看看文件上写了什么..。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|441577|Application在事件循环的每个循环开始时在主线程上创建一个自动释放池，并在事件循环结束时耗尽它，从而释放在处理事件时生成的任何自动释放对象。|blockquote|441578|您可以像这样释放委托调用中的选择器。|441579|-+(void)imagePickerController:(UIImagePickerController+*)picker+didFinishPickingMediaWithInfo:(NSDictionary+*)info{
...
...
[picker+release];

}
-+(void)imagePickerControllerDidCancel:(UIImagePickerController+*)picker{
....
....
[picker+release];

}|code-block|syntax|javascript|441580|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|O|8|@]|9|@]|A|$]]|$1|E|3|F|5|6|7|P|8|@]|9|@]|A|$]]|$1|G|3|H|5|I|7|Q|8|@]|9|@]|A|$J|K]]|$1|L|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|M|$]]

Since you have given it autorelease option it will get added to the autorelease pool ... see what the documentation say..

<blockquote>
 The Application Kit creates an autorelease pool on the main thread at
 the beginning of every cycle of the event loop, and drains it at the
 end, thereby releasing any autoreleased objects generated while
 processing an event.
</blockquote>

you can always release the picker in the delegate call like this..

<pre><code>- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
...
...
[picker release];

}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{
....
....
[picker release];

}
</code></pre>

blocks|key|921217|text|您是否将委托设置为nil？|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|921218|有关更多信息，请参考UIImagePickerConrtoller类引用|921219|[picker+release];
picker.delegate+=+nil+;|code-block|syntax|javascript|921220|希望这能帮到你。|921221|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.apple.com/library/ios/#documentation/uikit/reference/UIImagePickerController_Class/UIImagePickerController/UIImagePickerController.html^0|9|3|0|A|Q|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Z|8|@]|D|@$9|10|A|11|1|12]]|E|$]]|$1|H|3|I|5|J|7|13|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|14|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

Did you set delegate to <code>nil</code>?

For more information you can refer to <a href="http://developer.apple.com/library/ios/#documentation/uikit/reference/UIImagePickerController_Class/UIImagePickerController/UIImagePickerController.html" rel="nofollow">UIImagePickerConrtoller class reference</a>

<pre><code>[picker release];
picker.delegate = nil ;
</code></pre>

Hope this helps you.

blocks|key|921353|text|我们不能添加图片到评论，所以我把这作为一个答案。除非第一次释放内存，否则Live+Bytes总是小于Overall+Bytes。这可以从下面的图片中看到。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|921354|​|921355|📷|atomic|921356|921357|我不认为你的撤资有什么问题。我觉得你只是在看错误的价值观！|921358|编辑-我认为问题可能在其他地方。为了看到我看到的值，你需要做一些小小的改变。如下图所示，您需要取消选中Only+track+active+allocations选项，以查看正在寻找的值。如果您仍然在Active+allocations中看到7.41MB，那么问题在于其他方面。|BOLD|921359|921360|921361|921362|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/bf4436afe2e5c0c2c0f7e79b8bfde628.png|imageAlt|1|https://developer.qcloudimg.com/http-save/yehe-900000/a66990ae39ab12e8e5bd6e0b74388076.png^0|10|A|1E|D|0|0|0|1|0|0|0|0|0|3|1F|T|2R|I|0|0|0|1|1|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@$9|15|A|16|B|C]|$9|17|A|18|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|19|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|1A|8|@]|D|@$9|1B|A|1C|1|1D]]|E|$]]|$1|K|3|G|5|6|7|1E|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|1F|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|1G|8|@$9|1H|A|1I|B|P]|$9|1J|A|1K|B|C]|$9|1L|A|1M|B|C]]|D|@]|E|$]]|$1|Q|3|G|5|6|7|1N|8|@]|D|@]|E|$]]|$1|R|3|I|5|J|7|1O|8|@]|D|@$9|1P|A|1Q|1|1R]]|E|$]]|$1|S|3|G|5|6|7|1S|8|@]|D|@]|E|$]]|$1|T|3|-4|5|6|7|1T|8|@]|D|@]|E|$]]]|U|$V|$5|W|X|Y|E|$Z|10|11|-4]]|12|$5|W|X|Y|E|$Z|13|11|-4]]]]

We can't add images to comments so i'm putting this as an answer. The <code>Live Bytes</code> are always less than the <code>Overall Bytes</code> except till the first time a memory is deallocated. This can be seen from the image below.

<img src="https://i.stack.imgur.com/1k8Gx.png" alt="enter image description here">

I don't think there's anything wrong with your deallocation. I think you're just looking at the wrong values!

EDIT- I Think the problem might be somewhere else. To see the values I was seeing, you need to make a little change. As shown in the image below, you need to uncheck the option <code>Only track active allocations</code> to see the values you're looking for. If you still see 7.41 MB in <code>Active allocations</code>, then the problem is something else.

<img src="https://i.stack.imgur.com/cGDa0.png" alt="enter image description here">

I saw this thing on using instruments for my app. When I profile my app, the initial memory occupied is 563 KB which is before <code>UIImagePickerController</code> pops up. There is one button on the first viewController which makes the <code>UIImagePickerController</code> appear. 
As soon as <code>UIImagePickerController</code> appears, memory occupied goes upto 1.6 - 1.7 MB. If I select any image or cancel the <code>UIImagePickerController</code>, the memory occupied is still 1.6 - 1.7 MB which I believe should be 563 KB(or may be few KB's more). 
Please see the below code I have used : 

<pre><code>- (IBAction)chooseButtonPressed:(id)sender
{
 UIImagePickerController *pickerController = [[UIImagePickerController new]autorelease];
 [pickerController setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
 [pickerController setDelegate:self];
} 
</code></pre>

Why is the memory not being released? 

<img src="https://i.stack.imgur.com/0ho4A.png" alt="enter image description here">

UIImagePickerController does not release memory it occupies

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我在我的应用程序中用仪器看过这个东西。当我分析我的应用程序时，占用的初始内存是563 KB，这是在UIImagePickerController弹出之前。第一个viewController上有一个按钮，使UIImagePickerController出现。一旦UIImagePickerController出现，占用的内...

问UIImagePickerController不释放占用的内存。
EN

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问UIImagePickerController不释放占用的内存。EN