改变TextField输入的颜色

 UITextField *textField=[[UITextFieldalloc] initWithFrame:CGRectMake(50,100, 200,50)];

    textField.layer.borderWidth =0.5;

    textField.layer.borderColor = [[UIColorgrayColor]CGColor];

    //UITextField设置placeholder颜色

    UIColor *color = [UIColorredColor];

    textField.attributedPlaceholder = [[NSAttributedStringalloc] initWithString:@"密码"attributes:@{NSForegroundColorAttributeName: color}];

    textField.delegate=self;

    [self.viewaddSubview:textField];