IOS 字符串常用處理詳細介紹
NSString *tempA = @"123"; NSString *tempB = @"456";
1，字符串拼接
NSString *newString = [NSString stringWithFormat:@"%@%@",tempA,tempB];
2，字符轉int
int intString = [newString intValue];
3，int轉字符
NSString *stringInt = [NSString stringWithFormat:@"%d",intString];
4，字符轉float
float floatString = [newString floatValue];
5，float轉字符
NSString *stringFloat = [NSString stringWithFormat:@"%f",intString];
6.截取字符串
NSString*string =@"sdfsfsfsAdfsdf";string = [string substringToIndex:7];//截取下標7之后的字符串NSLog(@"截取的值為：%@",string);[string substringFromIndex:2];//截取下標2之前的字符串NSLog(@"截取的值為：%@",string);
7.匹配字符串
NSString*string =@"sdfsfsfsAdfsdf";NSRangerange = [stringrangeOfString:@"f"];//匹配得到的下標NSLog(@"rang:%@",NSStringFromRange(range));string = [string substringWithRange:range];//截取范圍類的字符串NSLog(@"截取的值為：%@",string);
8.分隔字符串
NSString*string =@"sdfsfsfsAdfsdf";NSArray *array = [string componentsSeparatedByString:@"A"]; //從字符A中分隔成2個元素的數組NSLog(@"array:%@",array); //結果是adfsfsfs和dfsdf
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