我們?cè)谑褂肳KWebView的時(shí)候，需要與h5那邊進(jìn)行交互哩至，比如：h5那邊有個(gè)按鈕點(diǎn)擊躏嚎，iOS端需要監(jiān)聽(tīng)這個(gè)方法并作出相應(yīng)的邏輯處理，這時(shí)候我們就需要通過(guò)注冊(cè)方法來(lái)進(jìn)行交互菩貌，如下

[self.userContentController addScriptMessageHandler:self name:MethodName];

但我們退出該控制器的時(shí)候卢佣，就會(huì)發(fā)現(xiàn)dealloc方法根本不會(huì)調(diào)用，導(dǎo)致內(nèi)存得不到釋放箭阶，這時(shí)候我們就要通過(guò)中間變量LAWKDelegateController來(lái)注冊(cè)方法虚茶，解決內(nèi)存釋放問(wèn)題

- (void)viewDidLoad {
    [super viewDidLoad];
    //配置環(huán)境
    WKWebViewConfiguration * configuration = [[WKWebViewConfiguration alloc]init];
    self.userContentController = [[WKUserContentController alloc]init];
    configuration.userContentController = self.userContentController;
    
    self.webView = [[WKWebView alloc]initWithFrame:CGRectMake(0, 0, 100, 100) configuration:configuration];
//    self.webView.UIDelegate = self;
//    self.webView.navigationDelegate = self;
    [self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"https://www.baidu.com"]]];
    [self.view addSubview:self.webView];
    /**
     注冊(cè)方法
     addScriptMessageHandler:self
     當(dāng)我們通過(guò)self注冊(cè)方法的時(shí)候，發(fā)現(xiàn)dealloc不會(huì)調(diào)用仇参，內(nèi)存得不到釋放
     解決方法：
     通過(guò)中間變量解決內(nèi)存釋放問(wèn)題：LAWKDelegateController
     */
//    [self.userContentController addScriptMessageHandler:self name:MethodName];
    LAWKDelegateController *delegateController = [[LAWKDelegateController alloc]init];
    delegateController.delegate = self;
    [self.userContentController addScriptMessageHandler:delegateController  name:MethodName];
}

#import <UIKit/UIKit.h>
#import <WebKit/WebKit.h>

NS_ASSUME_NONNULL_BEGIN

@protocol WKDelegate <NSObject>

- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message;

@end
@interface LAWKDelegateController : UIViewController <WKScriptMessageHandler>

@property (weak , nonatomic) id<WKDelegate> delegate;

@end

NS_ASSUME_NONNULL_END

#import "LAWKDelegateController.h"

@interface LAWKDelegateController ()

@end

@implementation LAWKDelegateController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}

- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message{
    if ([self.delegate respondsToSelector:@selector(userContentController:didReceiveScriptMessage:)]) {
        [self.delegate userContentController:userContentController didReceiveScriptMessage:message];
    }
}

@end

代碼在此