参考资料
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- (void)viewDidLoad
{ [super
viewDidLoad];
[self
addNavigationBar:FEEDBACK_VIEW_CONTROLLER];
UILabel *note = [[UILabel alloc] init];
[note setText:@"欢迎提出宝贵意见！您留下的每一份心意都将浇灌母婴宝的茁壮成长。"];
[note setLineBreakMode:NSLineBreakByWordWrapping];
note.numberOfLines = 0;
[self.view addSubview:note];
//将自适应向布局约束的转化关掉(根据情况有时需要有时不需要)
[note setTranslatesAutoresizingMaskIntoConstraints:NO];
[self.view addConstraint:[NSLayoutConstraint
constraintWithItem:note
attribute:NSLayoutAttributeTop
relatedBy:NSLayoutRelationEqual
toItem:navBar
attribute:NSLayoutAttributeBottom
multiplier:1.0
constant:10]];
[self.view addConstraint:[NSLayoutConstraint
constraintWithItem:note
attribute:NSLayoutAttributeLeft
relatedBy:NSLayoutRelationEqual
toItem:self.view
attribute:NSLayoutAttributeLeft
multiplier:1.0
constant:10]];
[self.view addConstraint:[NSLayoutConstraint
constraintWithItem:note
attribute:NSLayoutAttributeRight
relatedBy:NSLayoutRelationEqual
toItem:self.view
attribute:NSLayoutAttributeRight
multiplier:1.0
constant:-10]];
UITextView *tfContent = [[UITextView alloc] init];
[tfContent setTranslatesAutoresizingMaskIntoConstraints:NO];
[tfContent setBackgroundColor:[UIColor whiteColor]];
[tfContent setReturnKeyType:UIReturnKeyDone];
[self.view addSubview:tfContent];
[self.view addConstraint:[NSLayoutConstraint
constraintWithItem:tfContent
attribute:NSLayoutAttributeTop
relatedBy:NSLayoutRelationEqual
toItem:note
attribute:NSLayoutAttributeBottom
multiplier:1.0
constant:10]];
[self.view addConstraint:[NSLayoutConstraint
constraintWithItem:tfContent
attribute:NSLayoutAttributeLeft
relatedBy:NSLayoutRelationEqual
toItem:self.view
attribute:NSLayoutAttributeLeft
multiplier:1.0
constant:10]];
[self.view addConstraint:[NSLayoutConstraint
constraintWithItem:tfContent
attribute:NSLayoutAttributeRight
relatedBy:NSLayoutRelationEqual
toItem:self.view
attribute:NSLayoutAttributeRight
multiplier:1.0
constant:-10]];
[self.view addConstraint:[NSLayoutConstraint
constraintWithItem:tfContent
attribute:NSLayoutAttributeHeight
relatedBy:NSLayoutRelationEqual
toItem:nil
attribute:NSLayoutAttributeNotAnAttribute
multiplier:1.0
constant:100]];
UITextField *tfEmail = [UITextField new];
[tfEmail setTranslatesAutoresizingMaskIntoConstraints:NO];
[tfEmail setBackgroundColor:[UIColor whiteColor]];
[tfEmail setClearButtonMode:UITextFieldViewModeAlways];
[tfEmail setReturnKeyType:UIReturnKeyDone];
[tfEmail setPlaceholder:@"请输入邮箱，以便我们联系你！"];
[self.view addSubview:tfEmail];
[self.view addConstraint:[NSLayoutConstraint
constraintWithItem:tfEmail
attribute:NSLayoutAttributeTop
relatedBy:NSLayoutRelationEqual
toItem:tfContent
attribute:NSLayoutAttributeBottom
multiplier:1.0
constant:10]];
[self.view addConstraint:[NSLayoutConstraint
constraintWithItem:tfEmail
attribute:NSLayoutAttributeLeft
relatedBy:NSLayoutRelationEqual
toItem:self.view
attribute:NSLayoutAttributeLeft
multiplier:1.0
constant:10]];
[self.view addConstraint:[NSLayoutConstraint
constraintWithItem:tfEmail
attribute:NSLayoutAttributeRight
relatedBy:NSLayoutRelationEqual
toItem:self.view
attribute:NSLayoutAttributeRight
multiplier:1.0
constant:-10]];
[self.view addConstraint:[NSLayoutConstraint
constraintWithItem:tfEmail
attribute:NSLayoutAttributeHeight
relatedBy:NSLayoutRelationEqual
toItem:nil
attribute:NSLayoutAttributeNotAnAttribute
multiplier:1.0
constant:35]];
UIButton *btnSubmit = [[UIButton alloc] init];
[btnSubmit setTranslatesAutoresizingMaskIntoConstraints:NO];
[btnSubmit setTitle:STRING_COMMON_SUBMIT forState:UIControlStateNormal];
[btnSubmit setBackgroundImage:[UIImage imageNamed:@"bg_red_orange"] forState:UIControlStateNormal];
[btnSubmit setBackgroundImage:[UIImage imageNamed:@"bg_red"] forState:UIControlStateHighlighted];
[self.view addSubview:btnSubmit];
NSMutableArray
*tmpConstraints = [NSMutableArray
array];
[tmpConstraints addObjectsFromArray:[NSLayoutConstraint
constraintsWithVisualFormat:@"V:[tfEmail]-10-[btnSubmit(==35)]"
options:0 metrics:nil
views:NSDictionaryOfVariableBindings(tfEmail,btnSubmit)]];
[tmpConstraints addObjectsFromArray:[NSLayoutConstraint
constraintsWithVisualFormat:@"H:|-10-[btnSubmit]-10-|"
options:0 metrics:nil
views:NSDictionaryOfVariableBindings(btnSubmit)]];
[self.view addConstraints:tmpConstraints];
} |