如何为类编写正确的描述方法？
我已经实施
- (NSString *)description {
NSString *descriptionString = [NSString stringWithFormat:@"Name: %@ n Address: %@ n", self.name, self.address];
return descriptionString;
}
如果我调用对象的描述，埃弗里的事情就可以了。但如果我有一个对象数组，我调用它的描述，我会得到：
"姓名：Alex地址：某个地址"，
我想要的是
"姓名：Alex
地址：一些地址"
此外，您还可以使用回车r，它也将出现在新行中（甚至在NSArray描述中）
我在iOS框架中做了更多的挖掘，我观察到iOS sdk描述的默认行为不是放置"\n"，而是放置"；"。
示例：
UIFont *font = [UIFont systemFontOfSize:18];
NSLog(@"FontDescription:%@",[font description]);
NSMutableArray *fontsArray = [NSMutableArray arrayWithCapacity:0];
for(int index = 0; index < 10; index++) {
[fontsArray addObject:font];
}
NSLog(@"FontsArrayDescription:%@",[fontsArray description]);
结果是：
字体描述：字体家族："Helvetica"；字体重量：正常；字体样式：普通；字体大小：18px
FontsArray描述：（
"<UICFFont: 0x6e2d8b0> font-family: "Helvetica"; font-weight: normal; font-style: normal; font-size: 18px", "<UICFFont: 0x6e2d8b0> font-family: "Helvetica"; font-weight: normal; font-style: normal; font-size: 18px", "<UICFFont: 0x6e2d8b0> font-family: "Helvetica"; font-weight: normal; font-style: normal; font-size: 18px", "<UICFFont: 0x6e2d8b0> font-family: "Helvetica"; font-weight: normal; font-style: normal; font-size: 18px", "<UICFFont: 0x6e2d8b0> font-family: "Helvetica"; font-weight: normal; font-style: normal; font-size: 18px", "<UICFFont: 0x6e2d8b0> font-family: "Helvetica"; font-weight: normal; font-style: normal; font-size: 18px", "<UICFFont: 0x6e2d8b0> font-family: "Helvetica"; font-weight: normal; font-style: normal; font-size: 18px", "<UICFFont: 0x6e2d8b0> font-family: "Helvetica"; font-weight: normal; font-style: normal; font-size: 18px", "<UICFFont: 0x6e2d8b0> font-family: "Helvetica"; font-weight: normal; font-style: normal; font-size: 18px", "<UICFFont: 0x6e2d8b0> font-family: "Helvetica"; font-weight: normal; font-style: normal; font-size: 18px")
所以我决定在课堂上使用同样的方法。
- (NSString *)description {
NSString *descriptionString = [NSString stringWithFormat:@"Name: %@; Address: %@;", self.name, self.address];
return descriptionString;
}
结果是：
"姓名：亚历克斯；地址：某个地址；"
对于对象本身。
objecsArray描述：（
"Name:Alex; Address: some address;", "Name:Alex; Address: some address;", "Name:Alex; Address: some address;", "Name:Alex; Address: some address;", "Name:Alex; Address: some address;", "Name:Alex; Address: some address;", "Name:Alex; Address: some address;", "Name:Alex; Address: some address;", "Name:Alex; Address: some address;", "Name:Alex; Address: some address;")
对于对象数组。