_myAccount = [[UITextField alloc]init];    _myAccount.frame =  CGRectMake(0, 0, 200, 100);    _myAccount.backgroundColor = [UIColor clearColor];    [_myAccount.layer setCornerRadius:4];    //设置输入框的颜色    CGColorRef cgColor = [UIColor grayColor].CGColor;    _myAccount.layer.borderColor = cgColor;    //输入框像左空几格 40    UIView *paddingView = [[UIView alloc] initWithFrame:CGRectMake(0, 0,40, 0)];    _myAccount.leftView = paddingView;    _myAccount.leftViewMode = UITextFieldViewModeAlways;  //居中    _myAccount.layer.borderWidth= 1.0f;    _myAccount.delegate = self;    _myAccount.placeholder = @"请输入账号或手机号";    _myAccount.font = [UIFont systemFontOfSize:17];    _myAccount.clearButtonMode = UITextFieldViewModeWhileEditing;    _myAccount.contentVerticalAlignment = UIControlContentHorizontalAlignmentCenter;    [_myLoginView addSubview:_myAccount];