重写 NSArray、NSSet、NSDictionary 的输出方法，在Xcode实现中文（Unicode）字符在控制台的输出
原理
Xcode 控制台中在输出 NSArray、NSSet、NSDictionary 时，其中的中文字符会变成Unicode编码 如"\U67cf\U8367".
我们通过分类重写这些类的输出方法即可实现在控制台输出中文：
- (NSString *)descriptionWithLocale:(id)locale indent:(NSUInteger)level
效果
先看看效果：
创建一个字典并输出:
NSData *strData = [@"str -> data格式的字符串" dataUsingEncoding:NSUTF8StringEncoding];
NSData *dicData = [NSJSONSerialization dataWithJSONObject:@{@"key0": @"字典 -> data 的数据",}
options:NSJSONWritingPrettyPrinted
error:nil];
NSMutableSet *set = [NSMutableSet setWithArray:@[@"set0",
strData,
dicData]];
NSDictionary *dic = @{@"name" : @"BY",
@"My bolg" : @"http://qiubaiying.top",
@"count" : @(11),
@"strData" : strData,
@"dicData" : dicData,
@"set" : set,
@"Unicode" : @"😀😁🤣😂😄",
@"contact" : @[@"BY Blog:http://qiubaiying.top",
@"GitHub:https://github.com/qiubaiying",
@"简书:https://http://www.jianshu.com/u/e71990ada2fd"]};
NSLog(@"%@", dic);
输出结果：
2017-03-01 10:36:45.709 BYFoundationLog_Demo[1657:53604] {
"My bolg" = "http://qiubaiying.top";
Unicode = "\Ud83d\Ude00\Ud83d\Ude01\Ud83e\Udd23\Ud83d\Ude02\Ud83d\Ude04";
contact = (
"BY Blog:http://qiubaiying.top",
"GitHub:https://github.com/qiubaiying",
"\U7b80\U4e66:https://http://www.jianshu.com/u/e71990ada2fd"
);
count = 11;
dicData = <7b0a2020 226b6579 3022203a 2022e5ad 97e585b8 202d3e20 64617461 20e79a84 e695b0e6 8dae220a 7d>;
name = BY;
set = "{(\n <73747220 2d3e2064 617461e6 a0bce5bc 8fe79a84 e5ad97e7 aca6e4b8 b2>,\n set0,\n <7b0a2020 226b6579 3022203a 2022e5ad 97e585b8 202d3e20 64617461 20e79a84 e695b0e6 8dae220a 7d>\n)}";
strData = <73747220 2d3e2064 617461e6 a0bce5bc 8fe79a84 e5ad97e7 aca6e4b8 b2>;
}
将BYFoundationLog.m拖入项目，再次运行
2017-03-01 10:35:52.545 BYFoundationLog_Demo[1635:52772] {
set = {(
"str -> data格式的字符串",
"set0",
{
key0 = "字典 -> data 的数据",
},
)},
Unicode = "😀😁🤣😂😄",
strData = "str -> data格式的字符串",
count = 11,
dicData = {
key0 = "字典 -> data 的数据",
},
contact = (
"BY Blog:http://qiubaiying.top",
"GitHub:https://github.com/qiubaiying",
"简书:https://http://www.jianshu.com/u/e71990ada2fd",
),
name = "BY",
My bolg = "http://qiubaiying.top",
}
实现方法
以 NSArray 为例：
创建一个 NSArray 的分类，重写输出方法
@implementation NSArray (Log)
- (NSString *)descriptionWithLocale:(id)locale indent:(NSUInteger)level {
NSMutableString *desc = [NSMutableString string];
NSMutableString *tabString = [[NSMutableString alloc] initWithCapacity:level];
for (NSUInteger i = 0; i < level; ++i) {
[tabString appendString:@"\t"];
}
NSString *tab = @"";
if (level > 0) {
tab = tabString;
}
[desc appendString:@"\t(\n"];
for (id obj in self) {
if ([obj isKindOfClass:[NSDictionary class]]
|| [obj isKindOfClass:[NSArray class]]
|| [obj isKindOfClass:[NSSet class]]) {
NSString *str = [((NSDictionary *)obj) descriptionWithLocale:locale indent:level + 1];
[desc appendFormat:@"%@\t%@,\n", tab, str];
} else if ([obj isKindOfClass:[NSString class]]) {
[desc appendFormat:@"%@\t\"%@\",\n", tab, obj];
} else if ([obj isKindOfClass:[NSData class]]) {
NSError *error = nil;
NSObject *result = [NSJSONSerialization JSONObjectWithData:obj
options:NSJSONReadingMutableContainers
error:&error];
if (error == nil && result != nil) {
if ([result isKindOfClass:[NSDictionary class]]
|| [result isKindOfClass:[NSArray class]]
|| [result isKindOfClass:[NSSet class]]) {
NSString *str = [((NSDictionary *)result) descriptionWithLocale:locale indent:level + 1];
[desc appendFormat:@"%@\t%@,\n", tab, str];
} else if ([obj isKindOfClass:[NSString class]]) {
[desc appendFormat:@"%@\t\"%@\",\n", tab, result];
}
} else {
@try {
NSString *str = [[NSString alloc] initWithData:obj encoding:NSUTF8StringEncoding];
if (str != nil) {
[desc appendFormat:@"%@\t\"%@\",\n", tab, str];
} else {
[desc appendFormat:@"%@\t%@,\n", tab, obj];
}
}
@catch (NSException *exception) {
[desc appendFormat:@"%@\t%@,\n", tab, obj];
}
}
} else {
[desc appendFormat:@"%@\t%@,\n", tab, obj];
}
}
[desc appendFormat:@"%@)", tab];
return desc;
}
@end
NSSet、NSDictionary 与 NSArray 实现方法类似
代码下载
代码及Demo地址：GitHub
使用方法
直接将 BYFoundationLog.m 文件拖入项目中就能使用
