尝试根据 WKWebView 中的当前 URL 从外部打开 PDF，但未触发 decidePolicyForNavigationAction

Question

我在拦截 WKWebView 中的某些 HTTP 请求时遇到问题（我使用 objective C）。 decidePolicyForNavigationAction 似乎没有被调用。谁能帮我看看我做错了什么？

我首先从库中添加一个 WKWebview 组件到我的 Main.Storyboard

然后我将以下内容添加到我的 ViewController.h

#import <WebKit/WebKit.h>

@interface ViewController : UIViewController<UIAlertViewDelegate, WKUIDelegate, WKNavigationDelegate>

@property (strong, nonatomic) IBOutlet WKWebView *webView;

@end

这对 ViewController.m

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

@synthesize webView;

- (void)viewDidLoad
{
    [super viewDidLoad];
    webView = [[WKWebView alloc] initWithFrame:[[self view] bounds]];
    NSURL *url = [NSURL URLWithString:@"https://url.com"];
    NSURLRequest *urlReq = [NSURLRequest requestWithURL:url];

    [webView loadRequest:urlReq];
    self.view = webView;
}


- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
    NSLog(@"decidePolicyForNavigationAction");
    if (decisionHandler) {
        NSLog(@"decidePolicyForNavigationAction2");
        decisionHandler(WKNavigationActionPolicyAllow);
    }
}

Answer 1

改变这个：

[webView loadRequest:urlReq];

为此：

webView.navigationDelegate = self;
[webView loadRequest:urlReq];

Answer 2

嗯，终于找到问题了:) 这个属性阻止了我的 NSLog 的："OS_ACTIVITY_MODE": "disable

尝试根据 WKWebView 中的当前 URL 从外部打开 PDF，但未触发 decidePolicyForNavigationAction

Trying to open a PDF externally based upon what the current URL in WKWebView is, but decidePolicyForNavigationAction is not fired

xcode

objective-c

ios

wkwebview