1:多点触摸不稳定,多于两指触摸时不是很稳定连贯,慎用?
2:持久化归档,
[NSKeyedArchiver archiveRootObject:obj toFile:DataPath];
[NSKeyedUnarchiver unarchiveObjectWithFile:DataPath];
他们会分别调用obj对象中的方法:-(id)initWithCoder:(NSCoder*)coder和-(void)encodeWithCoder:(NSCoder*)coder
1:多点触摸不稳定,多于两指触摸时不是很稳定连贯,慎用?
2:持久化归档,
[NSKeyedArchiver archiveRootObject:obj toFile:DataPath];
[NSKeyedUnarchiver unarchiveObjectWithFile:DataPath];
他们会分别调用obj对象中的方法:-(id)initWithCoder:(NSCoder*)coder和-(void)encodeWithCoder:(NSCoder*)coder