我试图将UITextField“Placeholder”颜色设置为黑暗.
NSAttributedString * search = [[NSAttributedString alloc] initWithString:@"Search" attributes:@{NSForegroundColorAttributeName: [UIColor blackColor]}];
textField.attributedplaceholder = search;
>但是UITextField仍然在“占位符”中显示浅灰色.
>是否可以为UITextField设置深色“占位符”颜色？
我也尝试了另一种方法
[textField setValue:[UIColor blackColor] forKeyPath:@"_placeholderLabel.textColor"];
但这两种方法都适用于iOS 7,但不适用于iOS 6.
>是否可以在iOS 6目标中为UITextField设置深色“占位符”颜色？
谢谢！
解决方法
正如Apple建议的那样,继承UITextField并覆盖 – (void)drawPlaceholderInRect：(CGRect)rect是要走的路：
- (void)drawPlaceholderInRect:(CGRect)rect {
UIColor *colour = [UIColor lightGrayColor];
if ([self.placeholder respondsToSelector:@selector(drawInRect:withAttributes:)])
{ // iOS7 and later
NSDictionary *attributes = @{NSForegroundColorAttributeName: colour,NSFontAttributeName: self.font};
CGRect boundingRect = [self.placeholder boundingRectWithSize:rect.size options:0 attributes:attributes context:nil];
[self.placeholder drawAtPoint:CGPointMake(0,(rect.size.height/2)-boundingRect.size.height/2) withAttributes:attributes]; }
else { // iOS 6
[colour setFill];
[self.placeholder drawInRect:rect withFont:self.font lineBreakMode:NSLineBreakByTruncatingTail alignment:self.textAlignment];
}
}
信用：http://www.brightec.co.uk/blog/how-change-colour-uitextfields-placeholder-text-ios7-and-still-support-ios6