获取App中通讯录联系人到输入框中,发现有时自带有特殊字符类似于空格(其实不是空格字符),横线。通过 [text stringByReplacingOccurrencesOfString:@" " withString:@""]方法发现根本无法去除。
- 方法一去除"空格",无效。可以去掉所有真正的空格。
NSLog(@"去除空格------------%@---------",[self getFormatText:@" 135 6666 6666 "]);
- (NSString *)getFormatText:(NSString*)string{
NSString* text = string;
return [text stringByReplacingOccurrencesOfString:@" " withString:@""];
}
去除空格------------135 6666 6666---------
- 方法二去除"空格",无效。可以去掉所有的真正的空格。
NSLog(@"去除空格000000000000%@---------",[self removeSpaceAndNewline:@" 135 6666 6666 "]);
- (NSString *)removeSpaceAndNewline:(NSString *)str
{
NSString *temp = [str stringByReplacingOccurrencesOfString:@" " withString:@""];
temp = [temp stringByReplacingOccurrencesOfString:@"\r" withString:@""];
temp = [temp stringByReplacingOccurrencesOfString:@"\n" withString:@""];
return temp;
}
去除空格000000000000135 6666 6666---------
- 方法三去除"空格",无效。可以去掉字符串两端的空格及回车。
NSLog(@"去除空格111111111111%@---------",[self removeSpaceAndNewline1:@" 135 6666 6666 "]);
- (NSString *)removeSpaceAndNewline1:(NSString *)str
{
NSString *temp = [str stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
NSString *text = [temp stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet ]];
return text;
}
- 方法四去除"空格",有效。可以去掉字符串中的空格。
NSLog(@"去除空格222222222222%@---------",[self removeSpaceAndNewline2:@" 135 6666 6666 "]);
- (NSString *)removeSpaceAndNewline2:(NSString *)str
{
return [[str componentsSeparatedByCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] componentsJoinedByString:@""];
}
去除空格22222222222213566666666---------
- 方法五去除"空格",有效。去除字符串中所有除数字以外的字符。
NSLog(@"去除空格333333333333%@---------",[self removeSpaceAndNewline3:@" 135 6666 6666 "]);
- (NSString *)removeSpaceAndNewline3:(NSString *)str
{
NSCharacterSet *setToRemove = [[ NSCharacterSet characterSetWithCharactersInString:@"0123456789"]invertedSet];
NSString *strPhone = [[str componentsSeparatedByCharactersInSet:setToRemove] componentsJoinedByString:@""];
return strPhone;
}
去除空格33333333333313566666666---------
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