Iphone [\uu NSCFDictionary setObject:forKey:]：发送到不可变对象的变异方法

但它在上面的线路上崩溃了：

应该是

nsmutabledictionary = [[NSDictionary alloc] initWithObjects:listVolumn forKeys:listname];

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在您的代码中，我看到

nsmutabledictionary=[[NSDictionary alloc]initWithObjects:listVolumn forKeys:listname]
那一行您声明它是NSDictionary，而您希望它是NSMutableDictionary

[nsmutabledictionary setObject:[NSNumber numberWithLong:100] forKey:@"cu"];

nsmutabledictionary = [[NSDictionary alloc] initWithObjects:listVolumn forKeys:listname];

nsmutabledictionary = [[NSMutableDictionary alloc] initWithObjects:listVolumn forKeys:listname];