NSArray *stringArray = @[@"甲",@"已",@"丙",@"丁"];
NSString *arrrayString = [testArray componentsJoinedByString:@"-"];
NSLog輸出：arrrayString
甲-已-丙-丁
NSString *string = @"甲-已-丙-丁";
NSArray *stringArray = [string componentsSeparatedByString:@"-"];
NSLog輸出：stringArray
(
"\U7532",
"\U5df2",
"\U4e19",
"\U4e01"
)
NSString*string =@"sdfsfsfsAdfsdf";
string = [string substringToIndex:7];//截取掉下標(biāo)7之后的字符串
NSLog(@"截取的值為：%@",string);
[string substringFromIndex:2];//截取掉下標(biāo)2之前的字符串
NSLog(@"截取的值為：%@",string);
2.匹配字符串
NSString*string =@"sdfsfsfsAdfsdf";
NSRangerange = [stringrangeOfString:@"f"];//匹配得到的下標(biāo)
NSLog(@"rang:%@",NSStringFromRange(range));
string = [string substringWithRange:range];//截取范圍類的字符串
NSLog(@"截取的值為：%@",string);
3.分隔字符串
NSString*string =@"sdfsfsfsAdfsdf";
NSArray *array = [string componentsSeparatedByString:@"A"]; //從字符A中分隔成2個元素的數(shù)組
NSLog(@"array:%@",array); //結(jié)果是adfsfsfs和dfsdf
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