自己修改的MBProgressHUD 代码

+ (MBProgressHUD *)sharedMBProgressHUD {
    static MBProgressHUD *_sharedHUD = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        _sharedHUD = [[MBProgressHUD alloc] initWithView:[UIApplication sharedApplication].keyWindow];
    });
    return _sharedHUD;
}

//
//  UIViewController+ZYHUD.h
//  test_HUD_01
//
//  Created by admin on 4/13/16.
//  Copyright © 2016 jeffasd. All rights reserved.
//

#import <UIKit/UIKit.h>
#import "MBProgressHUD.h"

@interface UIViewController (ZYHUD)


@property (nonatomic, strong) MBProgressHUD *hudAddNew;



- (void)zyShowHudInView:(UIView *)view hint:(NSString *)hint;

- (void)zyHideHud;

- (void)zyHideHud:(void(^)())result;

- (void)zyShowHint:(NSString *)hint;

- (void)zyShowHint:(NSString *)hint DismissAfter:(NSTimeInterval)time;

//// 从默认(showHint:)显示的位置再往上(下)yOffset
//- (void)showHint:(NSString *)hint yOffset:(float)yOffset;


@end

//
//  UIViewController+ZYHUD.m
//  test_HUD_01
//
//  Created by admin on 4/13/16.
//  Copyright © 2016 jeffasd. All rights reserved.
//

#import "UIViewController+ZYHUD.h"
#import <objc/runtime.h>
#import <RACEXTScope.h>

#define IS_IPHONE_5 ( fabs( ( double )[ [ UIScreen mainScreen ] bounds ].size.height - ( double )568 ) < DBL_EPSILON )

@implementation UIViewController (ZYHUD)

- (MBProgressHUD *)hudAddNew{

    return objc_getAssociatedObject(self, @selector(hudAddNew));
}

- (void)setHudAddNew:(MBProgressHUD *)hudAddNew{
    objc_setAssociatedObject(self, @selector(hudAddNew), hudAddNew, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

- (void)zyShowHudInView:(UIView *)view hint:(NSString *)hint{
    self.hudAddNew = [[MBProgressHUD alloc] initWithView:view];
    self.hudAddNew.labelText = hint;
    [view addSubview:self.hudAddNew];
    [self.hudAddNew show:YES];
}

- (void)zyShowHint:(NSString *)hint
{
//    UIView *view = [[UIApplication sharedApplication].delegate window];
//    self.hudAddNew = [MBProgressHUD sharedMBProgressHUD];
//    [view addSubview:self.hudAddNew];
//    BOOL animated = YES;
//    [self.hudAddNew show:YES];
//    self.hudAddNew.userInteractionEnabled = NO;
//    self.hudAddNew.labelText = hint;
//    self.hudAddNew.margin = 10.f;
//    self.hudAddNew.removeFromSuperViewOnHide = YES;
    
    @weakify(self);
    dispatch_async(dispatch_get_main_queue(), ^{
        @strongify(self);
        UIView *view = [[UIApplication sharedApplication].delegate window];
        self.hudAddNew = [MBProgressHUD sharedMBProgressHUD];
        [view addSubview:self.hudAddNew];
        BOOL animated = YES;
        [self.hudAddNew show:YES];
        self.hudAddNew.userInteractionEnabled = NO;
        self.hudAddNew.labelText = hint;
        self.hudAddNew.margin = 10.f;
        self.hudAddNew.removeFromSuperViewOnHide = YES;
    });
}

- (void)zyShowHint:(NSString *)hint DismissAfter:(NSTimeInterval)time
{
    @weakify(self);
    dispatch_async(dispatch_get_main_queue(), ^{
        @strongify(self);
        UIView *view = [[UIApplication sharedApplication].delegate window];
        self.hudAddNew = [MBProgressHUD sharedMBProgressHUD];
        [view addSubview:self.hudAddNew];
        BOOL animated = YES;
        [self.hudAddNew show:YES];
        self.hudAddNew.userInteractionEnabled = NO;
        self.hudAddNew.labelText = hint;
        self.hudAddNew.margin = 10.f;
        self.hudAddNew.removeFromSuperViewOnHide = YES;
        [self.hudAddNew hide:YES afterDelay:time];
    });
}

- (void)zyHideHud{
    
    NSLog(@"self class is %@", [self class]);
    NSLog(@"self is %@", self);
    
//    @weakify(self);
//    dispatch_async(dispatch_get_main_queue(), ^{
//        @strongify(self);
////        [self.hudAddNew removeFromSuperview];
//        [self.hudAddNew hide:YES];
//        
//    });
    
    [self performSelectorOnMainThread:@selector(hidezyHud) withObject:nil waitUntilDone:YES];
}

- (void)hidezyHud{
    [self.hudAddNew removeFromSuperview];
}

- (void)zyHideHud:(void(^)())result{
    @weakify(self);
    dispatch_async(dispatch_get_main_queue(), ^{
        @strongify(self);
        [self.hudAddNew removeFromSuperview];
        result();
    });
}


@end