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#import "ZGKLoginViewController.h"

@interface ZGKLoginViewController ()
// 立即登錄按鈕
@property (weak, nonatomic) IBOutlet UIButton *loginBtn;
// 登錄模塊左邊間距
@property (weak, nonatomic) IBOutlet NSLayoutConstraint *leftMargin;

@end

@implementation ZGKLoginViewController

/**** 導航欄顏色 ****/
- (UIStatusBarStyle)preferredStatusBarStyle{
    return UIStatusBarStyleLightContent;
}
- (IBAction)closeBtn {
    [self dismissViewControllerAnimated:YES completion:nil];
}
- (IBAction)registerOrLoginBtn:(UIButton *)sender {
    
    // 1.關(guān)閉輸入法
    [self.view endEditing:YES];

    
//    // 2.改變登錄框的約束,記得改變左邊的約束,不要固定死右邊的約束
    if (self.leftMargin.constant) { // 這個里沒有改變控件的frame,只是記錄了要改變的約束,所以不能將這些代碼放入動畫中,要將強制刷新動作放入動畫中
        // 目前顯示的是注冊界面,點擊按鈕后切換為登錄界面
        self.leftMargin.constant = 0;
        sender.selected = NO;
        [sender setTitle:@"注冊賬號" forState:UIControlStateNormal];
    }else{ // 目前顯示的是登錄界面,點擊按鈕后切換為注冊界面
        self.leftMargin.constant = self.view.zgk_width;
        sender.selected = YES;
        [sender setTitle:@"已有賬號" forState:UIControlStateSelected];
    }
    
    // 3.做動畫,強制刷新,或者等runloop也可以
    [UIView animateWithDuration:0.25 animations:^{
        // 這里會刷新self.view內(nèi)部所有子控件的布局
        // 強制刷新:讓最新設(shè)置的約束值馬上作用到UI控件上
        [self.view layoutIfNeeded];
    }];
}

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
//    [self dismissViewControllerAnimated:YES completion:nil];
    // 點擊空白地方,關(guān)閉輸入法
    [self.view endEditing:YES];
}

- (void)viewDidLoad {
    [super viewDidLoad];

    // 設(shè)置圓角登錄按鈕
    // 數(shù)值前面要加@,包裝成對象,直接屬性用setValue forKey, 間接屬性用setValue forKeyPath
    //    self.loginBtn.layer.cornerRadius = 5;
    [self.loginBtn setValue:@5 forKeyPath:@"layer.cornerRadius"];
    
    //    self.loginBtn.layer.masksToBounds = YES;
    [self.loginBtn setValue:@YES forKeyPath:@"layer.masksToBounds"];
}

- (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

0.將登錄窗口的左間距拖入到登錄窗口(注意xib中,右間距不能設(shè)置死,最好不設(shè)置,不然滑動會出現(xiàn)問題)

// 登錄模塊左邊間距
@property (weak, nonatomic) IBOutlet NSLayoutConstraint *leftMargin;

1.點擊注冊或者返回已有賬號按鈕

- (IBAction)registerOrLoginBtn:(UIButton *)sender {

    // 1.關(guān)閉輸入法
    [self.view endEditing:YES];


   // 2.改變登錄框的約束,記得改變左邊的約束,不要固定死右邊的約束
    if (self.leftMargin.constant) { // 這個里沒有改變控件的frame,只是記錄了要改變的約束,所以不能將這些代碼放入動畫中,要將強制刷新動作放入動畫中
        // 目前顯示的是注冊界面,點擊按鈕后切換為登錄界面
        self.leftMargin.constant = 0;
        sender.selected = NO;
        [sender setTitle:@"注冊賬號" forState:UIControlStateNormal];
    }else{ // 目前顯示的是登錄界面,點擊按鈕后切換為注冊界面
        self.leftMargin.constant = self.view.zgk_width;
        sender.selected = YES;
        [sender setTitle:@"已有賬號" forState:UIControlStateSelected];
    }
    // 3.做動畫,強制刷新,或者不強制刷新等runloop也可以
    [UIView animateWithDuration:0.25 animations:^{
        // 這里會刷新self.view內(nèi)部所有子控件的布局
        // 強制刷新:讓最新設(shè)置的約束值馬上作用到UI控件上
        [self.view layoutIfNeeded];
    }];
}

2.讓登錄按鈕的方框角變成圓角

- (void)viewDidLoad {
    [super viewDidLoad];

    // 設(shè)置圓角登錄按鈕
    // 數(shù)值前面要加@,包裝成對象,直接屬性用setValue forKey, 間接屬性用setValue forKeyPath
    //    self.loginBtn.layer.cornerRadius = 5; 
    
    // 方法二:kvc
    [self.loginBtn setValue:@5 forKeyPath:@"layer.cornerRadius"];

    //    self.loginBtn.layer.masksToBounds = YES;
    // 方法二:kvc
    [self.loginBtn setValue:@YES forKeyPath:@"layer.masksToBounds"];
}