ios： UI学习总结(user Interface) UITextField

1、UITextField:

#pragma mark 通过代码创建UITextField

-(void)makeUITextFieldWithSourcecode{

    UITextField *textField =[[UITextField alloc]initWithFrame:CGRectMake(100, 100, 200, 30)];

    [textField setTextAlignment:NSTextAlignmentCenter];

    textField.font = [UIFont systemFontOfSize:20];

    [textField setBackgroundColor:[UIColor redColor]]; //注意要给UITextField设置background(图片或者color)否则在界面上会看不到

    [self.view addSubview:textField];

}