UIDevice 属性和 NSLog 的问题
我一直在尝试使用 [[UIDevice currentDevice] ...] 和 NSLog 记录设备参数。尽管尝试了不同的方法，但我总是收到相同的警告。
我得到的警告是：
Passing argument 1 of 'NSLog' from incompatible pointer type
这是我所有的尝试：
1：
NSString *UDID = [[UIDevice currentDevice] uniqueIdentifier];
NSString *deviceName = [[UIDevice currentDevice] name];
NSString *deviceModel = [[UIDevice currentDevice] model];
NSLog("\nDevice UDID: %@\nDevice Name: %@\nDevice Mode:%@\n",UDID, deviceName, deviceModel);
2：
NSString *UDID = (NSString*)[[UIDevice currentDevice] uniqueIdentifier];
NSString *deviceName = (NSString*)[[UIDevice currentDevice] name];
NSString *deviceModel = (NSString*)[[UIDevice currentDevice] model];
NSLog("\nDevice UDID: %@\nDevice Name: %@\nDevice Mode:%@\n",UDID, deviceName, deviceModel);
3：
NSString *UDID = [NSString stringWithFormat:[[UIDevice currentDevice] uniqueIdentifier]];
NSString *deviceName = [NSString stringWithFormat:[[UIDevice currentDevice] name]];
NSString *deviceModel = [NSString stringWithFormat:[[UIDevice currentDevice] model]];
NSLog("\nDevice UDID: %@\nDevice Name: %@\nDevice Mode:%@\n",UDID, deviceName, deviceModel);
4：
NSLog("\nDevice UDID: %@\nDevice Name: %@\nDevice Mode:%@\n",[[UIDevice currentDevice] uniqueIdentifier], [[UIDevice currentDevice] name], [[UIDevice currentDevice] model]);
有人可以帮助我吗？谢谢！
I've been trying to log device parameters using [[UIDevice currentDevice] ...] and NSLog. I always get the same warning despite trying different ways to go about it.
The warning I get is:
Passing argument 1 of 'NSLog' from incompatible pointer type
Here are all my attempts:
1:
NSString *UDID = [[UIDevice currentDevice] uniqueIdentifier];
NSString *deviceName = [[UIDevice currentDevice] name];
NSString *deviceModel = [[UIDevice currentDevice] model];
NSLog("\nDevice UDID: %@\nDevice Name: %@\nDevice Mode:%@\n",UDID, deviceName, deviceModel);
2:
NSString *UDID = (NSString*)[[UIDevice currentDevice] uniqueIdentifier];
NSString *deviceName = (NSString*)[[UIDevice currentDevice] name];
NSString *deviceModel = (NSString*)[[UIDevice currentDevice] model];
NSLog("\nDevice UDID: %@\nDevice Name: %@\nDevice Mode:%@\n",UDID, deviceName, deviceModel);
3:
NSString *UDID = [NSString stringWithFormat:[[UIDevice currentDevice] uniqueIdentifier]];
NSString *deviceName = [NSString stringWithFormat:[[UIDevice currentDevice] name]];
NSString *deviceModel = [NSString stringWithFormat:[[UIDevice currentDevice] model]];
NSLog("\nDevice UDID: %@\nDevice Name: %@\nDevice Mode:%@\n",UDID, deviceName, deviceModel);
4:
NSLog("\nDevice UDID: %@\nDevice Name: %@\nDevice Mode:%@\n",[[UIDevice currentDevice] uniqueIdentifier], [[UIDevice currentDevice] name], [[UIDevice currentDevice] model]);
Can anyone help me out? Thanks!
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评论（3）
您需要使用 NSString 作为 NSLog 的第一个参数
例如，
请注意字符串开头之前的“@”
You need to use an NSString as the first argument to NSLog
For example
Notice the '@' before the start of the string
NSLog采用 NSString 作为格式字符串，而不是const char*。在字符串前面添加@。IE：
NSLogtakes an NSString as the format string, not aconst char*. Prepend your string with a@.i.e.:
NSLog需要一个NSString作为其格式参数。您应该像这样调用NSLog：注意开头的“@” - 这是一个常量
NSString引用。您正在使用裸 C 字符串。NSLogrequires anNSStringas its format argument. You should be callingNSLoglike so:Note the "@" at the beginning - that's a constant
NSStringreference. You're using bare C strings.