Placing PlaceHolder In TextField

问题

I want to add mandatory field mark in textfield placeholder text like below image please suggest me i am totally confused how to do it

回答1:

You can use :

NSMutableAttributedString *attriButedString = [[NSMutableAttributedString alloc]initWithString:@"Mandatory*"];
[attriButedString addAttribute:NSForegroundColorAttributeName 
                         value:[NSColor lightGrayColor] 
                         range:NSMakeRange(0, 9)];
[attriButedString addAttribute:NSForegroundColorAttributeName 
                         value:[NSColor redColor] 
                         range:NSMakeRange(9, 1)];
[[self.textField cell] setPlaceholderAttributedString:attriButedString];

This will look like as:

Note: Instead of hard-coded range you can calculate according to your stringlength.

回答2:

If you are creating TextField from xib click on text field and go to attribute inspecter and fill your placeholder name in placeholder text feild

回答3:

Try with this.....

 [tfSubject setValue:[UIColor colorWithRed:249.0/255.0 green:204.0/255.0 blue:88.0/255.0 alpha:1.0] forKeyPath:@"_placeholderLabel.textColor"];

来源：https://stackoverflow.com/questions/20423541/placing-placeholder-in-textfield