2016-12-05 10_20_42.gif
//
// NewViewController.m
// MasonrySecond
//
// Created by mibo02 on 16/12/5.
// Copyright ? 2016年 mibo02. All rights reserved.
//
#import "NewViewController.h"
#import "Masonry.h"
@interface NewViewController ()
@property (nonatomic, strong)UIButton *growingButton;
@property (nonatomic, assign)BOOL isExpanded;
@end
@implementation NewViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.growingButton = [UIButton buttonWithType:(UIButtonTypeCustom)];
[self.growingButton setTitle:@"點(diǎn)我展開(kāi)" forState:(UIControlStateNormal)];
self.growingButton.layer.borderWidth = 3;
self.growingButton.layer.borderColor = [UIColor redColor].CGColor;
self.growingButton.backgroundColor = [UIColor greenColor];
[self.growingButton addTarget:self action:@selector(clickBtnAction:) forControlEvents:(UIControlEventTouchUpInside)];
[self.view addSubview:self.growingButton];
self.isExpanded = NO;
}
//
- (void)updateViewConstraints
{
[super updateViewConstraints];
[self.growingButton mas_remakeConstraints:^(MASConstraintMaker *make) {
make.top.mas_equalTo(0);
make.left.right.mas_equalTo(0);
if (self.isExpanded) {
make.bottom.mas_equalTo(0);
} else {
make.bottom.mas_equalTo(-350);
}
}];
}
- (void)clickBtnAction:(UIButton *)sender
{
self.isExpanded = !self.isExpanded;
if (!_isExpanded) {
[self.growingButton setTitle:@"點(diǎn)我展開(kāi)" forState:(UIControlStateNormal)];
} else {
[self.growingButton setTitle:@"點(diǎn)我收起" forState:(UIControlStateNormal)];
}
[self.view setNeedsUpdateConstraints];
[self.view updateConstraintsIfNeeded];
[UIView animateWithDuration:0.3 animations:^{
[self.view layoutIfNeeded];
}];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end
