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iOS - 自定义视图控制器

在iOS开发过程中,难免会需要不停的去创建视图控制器并进行适配,但是如果每次都创建新的视图控制器,对于一些可以通用的设置就会很繁琐,然后我就自己弄了个自定义的视图控制器,功能很简单,只是在视图控制器里面定义了对导航栏按钮的设置,界面的一些设置,如果有疑问,可以直接回复,看到了会第一时间回答.

CustomerViewController.h

//页面进入方式

@property (nonatomic, assign) BOOL isPresent;

/**

左侧按钮

@param title 字样 - 长度为0显示图片

@param action 方法

*/

- (void)setLeftButton:(NSString *_Nullable)title withSelector:(nullable SEL)action;

/**

右侧按钮

@param title 字样

@param action 方法

*/

- (void)setRightButton:(NSString *_Nullable)title withSelector:(nullable SEL)action;

/**

返回上一页面

*/

- (void)popBeforeControllerBack;

/**

返回根视图

*/

- (void)popRootViewControllerBack;

CustomerViewController.m

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view.

    //状态栏不透明(必须设置,并且为NO)

    self.navigationController.navigationBar.translucent = NO;

    //意思就是延伸到边界

    self.extendedLayoutIncludesOpaqueBars = YES;

    //导航栏背景颜色

    self.navigationController.navigationBar.barTintColor = [UIColor whiteColor];

    self.automaticallyAdjustsScrollViewInsets = NO;

    //页面进入方式 yes代表presentview进入

//    NSLog(@"页面进入方式 == %@",self.isPresent @"Present" : @"Push");

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

//返回上一页面

- (void)popBeforeControllerBack {

    if (self.isPresent) {

        [self dismissViewControllerAnimated:YES completion:nil];

    } else {

        [self.navigationController popViewControllerAnimated:YES];

    }

}

//返回根视图

- (void)popRootViewControllerBack {

    if (self.isPresent) {

        [self dismissViewControllerAnimated:YES completion:nil];

    } else {

        [self.navigationController popToRootViewControllerAnimated:YES];

    }

}

//左侧按钮

- (void)setLeftButton:(NSString *_Nullable)title withSelector:(nullable SEL)action {

    UIButton *left = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 30, 30)];

    if (title.length == 0) {

        [left setImage:[UIImage imageNamed:@"popBack"] forState:UIControlStateNormal];

    } else {

        CGFloat width = [title getWidthWithMaxHeight:30 WithFont:15];

        if (width < 40) {

            width = 40;

        }

        CGFloat height = self.navigationController.navigationBar.frame.size.height;

        left.frame = CGRectMake(0, 0, width, height);

        [left setTitle:title forState:UIControlStateNormal];

        left.titleLabel.font = FCFont(16);

        [left setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];

    }

    [left addTarget:self action:action forControlEvents:UIControlEventTouchUpInside];

    left.clipsToBounds = YES;

    UIBarButtonItem *leftBarButon = [[UIBarButtonItem alloc] initWithCustomView:left];

    UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];

    negativeSpacer.width = 5;//这个数值可以根据情况自由变化

    self.navigationItem.leftBarButtonItems = @[leftBarButon,negativeSpacer];

}

//右侧按钮

- (void)setRightButton:(NSString *_Nullable)title withSelector:(nullable SEL)action {

    CGFloat width = [title getWidthWithMaxHeight:30 WithFont:15];

    if (width < 40) {

        width = 40;

    }

    CGFloat height = self.navigationController.navigationBar.frame.size.height;

    UIButton *right = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, width * 3 / 2.0, height)];

    [right setTitle:title forState:UIControlStateNormal];

    [right setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];

    right.titleLabel.font = FCFont(16);

    [right addTarget:self action:action forControlEvents:UIControlEventTouchUpInside];

    right.clipsToBounds = YES;

    UIBarButtonItem *rightBarButon = [[UIBarButtonItem alloc] initWithCustomView:right];

    UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];

    negativeSpacer.width = 5;//这个数值可以根据情况自由变化

    self.navigationItem.rightBarButtonItems = @[rightBarButon,negativeSpacer];

}

实际调用时,直接在视图控制器中使用self就可以调用这些方法,毕竟已经在.h文件里声明过.

调用导航栏左侧按钮

//左边按钮
    [self setLeftButton:@"" withSelector:@selector(placeBack)];

返回根视图

self popRootViewControllerBack];

isPresent 这个是因为有部分视图我是通过present方式推出来的,因此退出的时候需要用dismiss而不是pop方法,所以在进入视图之前,需设置该参数,因为不设置的情况下,该参数默认为NO,因此页面返回方式默认为pop方式.


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