NSString - stringWithFormat 自动发布
@property(nonatomic, retain) NSString *password;
-(id)init {
...
password=[NSString stringWithFormat:@"%@", [[NSProcessInfo processInfo] globallyUniqueString]];
OR
password=[[NSProcessInfo processInfo] globallyUniqueString];
}
我的问题是，在执行过程中的某个随机点，密码对象会自动释放。当我使用任一作业时，效果是相同的。一旦我放入保留，问题就不再存在。我确信流程中的任何地方都没有释放密码对象 - 正如我提到的，它是在单例类中。我还检查了即使密码对象被释放，类实例也是相同的。
请任何提示！
@property(nonatomic, retain) NSString *password;
-(id)init {
...
password=[NSString stringWithFormat:@"%@", [[NSProcessInfo processInfo] globallyUniqueString]];
OR
password=[[NSProcessInfo processInfo] globallyUniqueString];
}
My problem is that during course of execution at some random point the password object gets automatically released. Effect is same when i use either of the assignments. As soon as i put in a retain, the problem no longer exists. I'm sure there is no release of password object anywhere in the flow - as i mentioned it is in a singleton class. I also checked that the class instance is same even when the password object is released.
Any hints please!
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评论（2）
您分配 iVar，而不是属性...
因此，由于您不使用 setter 方法，因此不会保留您的对象。
使用该属性来代替：
You assign the iVar, not the property...
So as you don't use the setter method, your object is not retained.
Use the property instead:
您可以使用...
还可以在 内存管理。我还会在您的代码中设置断点，然后查看您的对象是否被释放。
You could use...
Also checkout Apple's doc on memory management. I would also set breakpoints in your code and see then your object gets released.