blocks|key|765922|text|使用stringByReplacingOccurrencesOfString轻松完成任务|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|765923|NSString+*search+=+[searchbar.text+stringByReplacingOccurrencesOfString:@"+"+withString:@""];|code-block|syntax|javascript|765924|entityMap^0|2|10|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Easy task using <code>stringByReplacingOccurrencesOfString</code>

<pre><code>NSString *search = [searchbar.text stringByReplacingOccurrencesOfString:@" " withString:@""];
</code></pre>

blocks|key|549173|text|stringByReplacingOccurrencesOfString会将字符串中的所有空格替换为非仅开始和结束|type|unstyled|depth|inlineStyleRanges|entityRanges|data|549174|使用|549175|[YourString+stringByTrimmingCharactersInSet:[NSCharacterSet++whitespaceAndNewlineCharacterSet]]|code-block|syntax|javascript|549176|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

stringByReplacingOccurrencesOfString will replace all white space with in the string non only the starting and end

Use

<pre><code>[YourString stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]
</code></pre>

blocks|key|549178|text|pStrTemp+=+[pStrTemp+stringByTrimmingCharactersInSet:[NSCharacterSet+whitespaceAndNewlineCharacterSet]];|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|549179|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>pStrTemp = [pStrTemp stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
</code></pre>

blocks|key|766000|text|这是为了在从任何文本字段获取文本时删除任何空格，但是如果您想要删除字符串之间的空格，则可以使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|766001|xyz+=[xyz.text+stringByReplacingOccurrencesOfString:@"+"+withString:@""];|code-block|syntax|javascript|766002|它将用没有空格的空格替换空格，并通过以下方法处理空字段：|766003|searchbar.text=[searchbar.text+stringByTrimmingCharactersInSet:+[NSCharacterSet+whitespaceCharacterSet]];|766004|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

That is for removing any space that is when you getting text from any text field but if you want to remove space between string you can use 

<pre><code>xyz =[xyz.text stringByReplacingOccurrencesOfString:@" " withString:@""];
</code></pre>

It will replace empty space with no space and empty field is taken care of by below method:

<pre><code>searchbar.text=[searchbar.text stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceCharacterSet]];
</code></pre>

blocks|key|549312|text|我强烈建议将它放在您的项目中的某个位置：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|549313|extension+String+{
++++func+trim()+->+String+{
++++++++return+self.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet())
++++}

++++func+trim(withSet:+NSCharacterSet)+->+String+{
++++++++return+self.stringByTrimmingCharactersInSet(withSet)
++++}
}|code-block|syntax|javascript|549314|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I strongly suggest placing this somewhere in your project:

<pre><code>extension String {
 func trim() -&gt; String {
 return self.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet())
 }

 func trim(withSet: NSCharacterSet) -&gt; String {
 return self.stringByTrimmingCharactersInSet(withSet)
 }
}
</code></pre>

blocks|key|766089|text|对我来说这是SWIFT最好的方式|type|unstyled|depth|inlineStyleRanges|entityRanges|data|766090|++++++++let+myString+=+"++ciao+++\n++++++++++++++ciao+++++"
++++++++var+finalString+=+myString+as+NSString

++++++++for+character+in+myString{
++++++++if+character+==+"+"{

++++++++++++finalString+=+finalString.stringByReplacingOccurrencesOfString("+",+withString:+"")

++++++++}else{
++++++++++++finalString+=+finalString.stringByReplacingOccurrencesOfString("\n",+withString:+"")

++++++++}

++++}
+++++println(finalString)|code-block|syntax|javascript|766091|结果就是:再见！|766092|但是诀窍是这样的！|766093|+extension+String+{

++++var+NoWhiteSpace+:+String+{

++++var+miaStringa+=+self+as+NSString

++++if+miaStringa.containsString("+"){

++++++miaStringa+=++miaStringa.stringByReplacingOccurrencesOfString("+",+withString:+"")
++++}
++++++++return+miaStringa+as+String

++++}
}

let+myString+=+"Ciao+++Ciao+++++++Ciao".NoWhiteSpace++//CiaoCiaoCiao|766094|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

This for me is the best way SWIFT

<pre><code> let myString = " ciao \n ciao "
 var finalString = myString as NSString

 for character in myString{
 if character == " "{

 finalString = finalString.stringByReplacingOccurrencesOfString(" ", withString: "")

 }else{
 finalString = finalString.stringByReplacingOccurrencesOfString("\n", withString: "")

 }

 }
 println(finalString)
</code></pre>

and the result is : ciaociao

But the trick is this!

<pre><code> extension String {

 var NoWhiteSpace : String {

 var miaStringa = self as NSString

 if miaStringa.containsString(" "){

 miaStringa = miaStringa.stringByReplacingOccurrencesOfString(" ", withString: "")
 }
 return miaStringa as String

 }
}

let myString = "Ciao Ciao Ciao".NoWhiteSpace //CiaoCiaoCiao
</code></pre>

blocks|key|766155|text|如果您遇到的是\u00a0而不是(空格)，这可能会对您有所帮助。当我试图提取设备联系电话号码时，我遇到了这个问题。我需要修改phoneNumber字符串，使其不包含空格。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|766156|NSString*+yourString+=+[yourString+stringByReplacingOccurrencesOfString:@"\u00a0"+withString:@""];|code-block|syntax|javascript|766157|当yourString是当前电话号码时。|766158|entityMap^0|7|6|0|0|1|A|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

This may help you if you are experiencing <code>\u00a0</code> in stead of <code></code> (whitespace). I had this problem when I was trying to extract Device Contact Phone Numbers. I needed to modify the phoneNumber string so it has no whitespace in it.

<pre><code>NSString* yourString = [yourString stringByReplacingOccurrencesOfString:@"\u00a0" withString:@""];
</code></pre>

When <code>yourString</code> was the current phone number.

blocks|key|766185|text|-+(NSString+*)removeWhitespaces+{
++return+[[self+componentsSeparatedByCharactersInSet:
++++++++++++++++++++[NSCharacterSet+whitespaceCharacterSet]]
++++++componentsJoinedByString:@""];
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|766186|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>- (NSString *)removeWhitespaces {
 return [[self componentsSeparatedByCharactersInSet:
 [NSCharacterSet whitespaceCharacterSet]]
 componentsJoinedByString:@""];
}
</code></pre>

blocks|key|549504|text|使用下面的marco并删除空格。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|549505|#define+TRIMWHITESPACE(string)+[string+stringByTrimmingCharactersInSet:[NSCharacterSet+whitespaceCharacterSet]]|code-block|syntax|javascript|549506|在其他文件中调用TRIM：|549507|++++NSString+*strEmail;
++++strEmail+=+TRIM(@"+++++this+is+the+test.");|549508|愿它能帮助你..。|549509|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Use below marco and remove the space.

<pre><code>#define TRIMWHITESPACE(string) [string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]
</code></pre>

in other file call TRIM :

<pre><code> NSString *strEmail;
 strEmail = TRIM(@" this is the test.");
</code></pre>

May it will help you...

I've been trying to get rid of the white spaces in an <code>NSString</code>, but none of the methods I've tried worked. 

I have <code>"this is a test"</code> and I want to get <code>"thisisatest"</code>.

I've used <code>whitespaceCharacterSet</code>, which is supposed to eliminate the white spaces.

<pre><code>NSString *search = [searchbar.text stringByTrimmingCharactersInSet:
 [NSCharacterSet whitespaceCharacterSet]];
</code></pre>

but I kept getting the same string with spaces. Any ideas?

Remove all whitespaces from NSString

我一直在尝试去掉NSString中的空格，但是我尝试过的方法都不起作用。我有"this is a test"，我想要"thisisatest"。我使用了whitespaceCharacterSet，它应该可以消除空格。NSString *search = [searchbar.text stringByTrimming...

问从NSString中删除所有空格
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