问题
I want to change Place holder color from user attributes (interface builder) because i dont want to subclass my UITextfield etc... i searched on internet and found this "_placeholderLabel.textColor" Yes this works well Programmatically [self.tfEmail setValue:[UIColor whiteColor] forKeyPath:@"_placeholderLabel.textColor"];
but i want to use it in user attributes in interface builder.
回答1:
Try removing '_',

Works for me.
回答2:
Without USING USER ATTRIBUTES
self.txtField.attributedPlaceholder = PlaceHolderAttributedString(@"ABCDEF");
where PlaceHolderAttributedString is a macro defined as
#define PlaceHolderAttributedString(placeHolderText) [[NSAttributedString alloc] initWithString:placeHolderText attributes:@{NSForegroundColorAttributeName:ColorTextFieldPlaceHolder}]
USING USER ATTRIBUTES
placeholderLabel.textColor
回答3:
in swift:
one_textfield.setValue(UIColor.redColor(), forKeyPath: "_placeholderLabel.textColor")
来源:https://stackoverflow.com/questions/21156009/change-uitextfields-placeholder-text-color-using-userattributes