UITextFile相关

1：设置UITextField不显示键盘、隐藏光标

    _TxtView.inputView = [[UIView alloc] initWithFrame:CGRectZero];

    _TxtView.tintColor  = [UIColor clearColor];

2：设置UITextField选中文本时的 全选复制文字的颜色

在plist文件中修改Localization native development region 未China

3:设置Placeholder字体颜色

//第一种

UIColor *color = [UIColor whiteColor];

_userName.attributedPlaceholder = [[NSAttributedString alloc] initWithString:@"用户名" attributes:@{NSForegroundColorAttributeName: color}];

//第二种

[_userName setValue:[UIColor whiteColor] forKeyPath:@"_placeholderLabel.textColor"];