Integrate UIView to cocos2d: how to release UIView elements?

If I add a UITextField to the openGLView and remove it again, dealloc is never called.

// add a textfield to the openGLView
codeTextfield = [[UITextField alloc] initWithFrame:cod开发者_如何学运维eTextfieldFrame];
[[[CCDirector sharedDirector] openGLView] addSubview:codeTextfield];

// remove the textfield
[codeTextfield removeFromSuperview];

// call replaceScene
[CCDirector sharedDirector] replaceScene:[Menu node]];

// dealloc will not be called

I suffer with this problem a long time and there is no solution in sight.

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Check the retain counts along the way; this should help you to see what's going on.

codeTextfield = [[UITextField alloc] initWithFrame:codeTextfieldFrame];
// RETAIN COUNT IS NOW 1
[[[CCDirector sharedDirector] openGLView] addSubview:codeTextfield];
// RETAIN COUNT IS NOW 2

[codeTextfield removeFromSuperview];
// RETAIN COUNT IS NOW 1

To get the count back to 0 after removing codeTextfield from the view, instead do this:

codeTextfield = [[UITextField alloc] initWithFrame:codeTextfieldFrame];
// RETAIN COUNT IS NOW 1
[[[CCDirector sharedDirector] openGLView] addSubview:codeTextfield];
// RETAIN COUNT IS NOW 2
[codeTextfield release];
// RETAIN COUNT IS NOW 1

[codeTextfield removeFromSuperview];
// RETAIN COUNT IS NOW 0 -- DEALLOC WILL BE CALLED

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addSubview retains the view. As you created the object with alloc, you own it too. Removing the view will only decrease the retain count by 1. You want [codeTextfield release] after you add it as a subview.