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我想隐藏工具栏按钮。首先在我的viewDidLoad中,我隐藏了其中一些,并且完美地工作。我不想隐藏btnCreateReport。我只是用:删除UIToolBar按钮不起作用
NSMutableArray *items = [[myToolBar.items mutableCopy] autorelease];
[items removeObject: btnEmailReport];
[items removeObject: btnSaveToIpad];
[items removeObject: btnPrintReport];
[items removeObject: btnNewInspection];
myToolBar.items = items;
后来,当我尝试使用了隐藏其中的2:
NSMutableArray *items = [[myToolBar.items mutableCopy] autorelease];
[items addObject: btnEmailReport];
[items removeObject: btnSaveToIpad];
[items addObject: btnPrintReport];
[items addObject: btnNewInspection];
[items removeObject:btnCreateReport];
myToolBar.items = items;
的btnCreateReport不会消失。什么会导致这样的事情? 谢谢!