xib自定义弹窗的实现

1、首先继承UIView拖出一个XIB文件的类，如图定制一个简单的弹窗

2、在.h文件中相应的名称

typedef void(^ButtonBlock)(void);

@interface SimpleAlertView : UIView

@property (weak, nonatomic) IBOutlet UILabel *titleLabel;
@property (weak, nonatomic) IBOutlet UILabel *contentLabel;

@property (nonatomic,copy) ButtonBlock cancelButtonBlock;
@property (nonatomic,copy) ButtonBlock confirmButtonBlock;

+ (instancetype)getSimpleView;
- (void)show;
- (void)dismiss;

　　

3、在.m中实现相应 的方法

+ (instancetype)getSimpleView{
    
    NSArray *objs = [[NSBundle mainBundle] loadNibNamed:@"SimpleAlertView" owner:nil options:nil];
    return [objs lastObject];
}

- (void)awakeFromNib{
    
    self.frame = [[UIScreen mainScreen] bounds];
    self.backgroundColor = [[UIColor blackColor]colorWithAlphaComponent:0.0];
    
    self.alertView.alpha = 0.0;
    self.alertView.layer.borderWidth = 0.5f;
    self.alertView.layer.borderColor = [UIColor grayColor].CGColor;
    
    self.cancelBtn.backgroundColor = [UIColor greenColor];
    self.confirmBtn.backgroundColor = [UIColor greenColor];
    
    self.cancelBtn.layer.borderWidth = 0.5f;
    self.cancelBtn.layer.borderColor = [UIColor grayColor].CGColor;
    
    self.confirmBtn.layer.borderWidth = 0.5f;
    self.confirmBtn.layer.borderColor = [UIColor grayColor].CGColor;
    
    self.titleLabel.font = [UIFont boldSystemFontOfSize:17.0f];
    
}

- (void)show{
    
    [[UIApplication sharedApplication].keyWindow.rootViewController.view addSubview:self];
    
    _alertView.transform = CGAffineTransformScale(_alertView.transform,1.3,1.6);

    [UIView animateWithDuration:0.3 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{
        
        self.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.3];
        
        _alertView.transform = CGAffineTransformIdentity;
        self.alertView.alpha = 1.0;
        
    } completion:nil];
    
}


- (void)dismiss{
    
    [UIView animateWithDuration:0.25 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{
        
        self.alpha = 0.0;
        self.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.0];
        _alertView.transform = CGAffineTransformScale(_alertView.transform,0.9,0.9);
        
    } completion:^(BOOL finished) {
        
        if (finished) {
            [self removeFromSuperview];
        }
    }];
    
    
}


- (IBAction)cancelBtn:(id)sender {
    
    if (self.cancelButtonBlock) {
        
        self.cancelButtonBlock();
    }
    
    [self dismiss];
    
}

- (IBAction)confirmBtn:(id)sender {
    
    if (self.confirmButtonBlock) {
        
        self.confirmButtonBlock();
    }
    [self dismiss];
}

　　

@property (weak, nonatomic) IBOutlet UIView *alertView;

@property (weak, nonatomic) IBOutlet UIButton *cancelBtn;

@property (weak, nonatomic) IBOutlet UIButton *confirmBtn;

　　

4、然后在需要弹窗的地方直接加载定制好的XIB文件即可

/**
 *  使用XIB快速构建alert，
 */
- (IBAction)simpleAlert:(id)sender {
    
    SimpleAlertView *alertView = [SimpleAlertView getSimpleView];
    
    alertView.titleLabel.text = @"SimpleAlertView";
    alertView.contentLabel.text = @"simpleAlertView!!!!";
    
    alertView.cancelButtonBlock = ^{
    
        NSLog(@" 1111111");
    };
    
    alertView.confirmButtonBlock = ^{
        NSLog(@" 2222222");
    };
    
    [alertView show];
    
}

　　

最终效果