erpsuiteios/Redant Drivers/Apex And Drivers/RAProgressHUD.m

//
//  RAProgressHUD.m
//  Apex And Drivers
//
//  Created by Jack on 2018/6/5.
//  Copyright © 2018年 USAI. All rights reserved.
//

#import "RAProgressHUD.h"

@implementation RAProgressHUD

+ (instancetype)showHUDOnView:(UIView *)view {
    
    if (!view) {
        return nil;
    }
    
    RAProgressHUD *hud = [[RAProgressHUD alloc] init];
    CGFloat viewWidth = CGRectGetWidth(view.bounds);
    CGFloat viewHeight = CGRectGetHeight(view.bounds);
    
//    CGRect frame = CGRectMake((viewWidth - 100) * 0.5, (viewHeight - 100) * 0.5, 100, 100);
//    hud.frame = frame;
    hud.backgroundColor = [UIColor lightGrayColor];
    hud.layer.cornerRadius = 5.0f;
    hud.layer.masksToBounds = YES;
    [view addSubview:hud];
    
    hud.translatesAutoresizingMaskIntoConstraints = NO;
    
    NSLayoutConstraint *h_center = [NSLayoutConstraint constraintWithItem:hud
                                                                attribute:NSLayoutAttributeCenterX
                                                                relatedBy:NSLayoutRelationEqual
                                                                   toItem:view
                                                                attribute:NSLayoutAttributeCenterX
                                                               multiplier:1
                                                                 constant:0];
    
    NSLayoutConstraint *v_center = [NSLayoutConstraint constraintWithItem:hud
                                                                attribute:NSLayoutAttributeCenterY
                                                                relatedBy:NSLayoutRelationEqual
                                                                   toItem:view
                                                                attribute:NSLayoutAttributeCenterY
                                                               multiplier:1
                                                                 constant:0];
    NSLayoutConstraint *width = [NSLayoutConstraint constraintWithItem:hud
                                                                attribute:NSLayoutAttributeWidth
                                                                relatedBy:NSLayoutRelationEqual
                                                                   toItem:nil
                                                                attribute:NSLayoutAttributeNotAnAttribute
                                                               multiplier:0
                                                                 constant:100];
    NSLayoutConstraint *height = [NSLayoutConstraint constraintWithItem:hud
                                                             attribute:NSLayoutAttributeHeight
                                                             relatedBy:NSLayoutRelationEqual
                                                                toItem:nil
                                                             attribute:NSLayoutAttributeNotAnAttribute
                                                            multiplier:0
                                                              constant:100];
    [view addConstraints:@[h_center,v_center,width,height]];
    
    return hud;
}

- (void)dismiss {
    [self removeFromSuperview];
}

@end