修改UITextField Placeholder的颜色

• 1 第一种情况只是修改颜色等文字属性

  • 创建属性字典

       NSDictionary *attrsDic = @{ NSForegroundColorAttributeName : [UIColor colorWithRed:106/255.0 green:114/255.0 blue:117/255.0 alpha:1],NSFontAttributeName:[UIFont systemFontOfSize:15] };
    

  • 创建属性字符串

       NSAttributedString *str = [[NSAttributedString alloc] initWithString:@"anything" attributes:attrsDic];
    

  • 赋值给textfield的attributedPlaceholder属性

       _txt.attributedPlaceholder = str;
    

• 2 第二种情况改颜色和Placeholder位置

  • 继承UITextField

  • 重写drawPlaceholderInRect：方法

  • 设置颜色和位置等

      [colour setFill];
    
      rect = CGRectMake(0, 0, 0, 0);//修改位置
    
      [_txtOldPassWord.placeholder drawInRect:rect withFont:_txtOldPassWord.font lineBreakMode:NSLineBreakByTruncatingTail alignment:_txtOldPassWord.textAlignment];