Question

html page vertical cutoff picture of code 2如何让wkwebview（目标c）显示加载的html文件的所有内容，而不是垂直切断页面的一半？（xcode 8.2.1）系统10.11.6 目标ios 8.0及以上

并且我不是最好的代码，所以如果有什么我可以学习的东西，我会在我去的时候应用它....

这是Xcode8.2.1的viewcontrollerm代码，我使用uiwebview和webview没有像wkwebview一样流畅地拾取本地html文件。我尝试了很多不同的解决方案，显然没有帮助......而且很简单...我想要做的就是加载index.html，我有在html和css中编写的java，以及一些图像文件夹的链接。如果有人可以帮助它将是金色的，许多祝福... < / p>

另外在上面发布的照片我正在使用iPhone 6的ios模拟器，你可以看到文字的底部段被切断了，我只能滚动...它不会让我滚动任何比那。我相信它与自动布局有关，使高度尺寸固定，不会再滚动html。我可能完全错了，但如果有人有任何建议让我知道......

其他图片是项目其余部分的代码。如果有任何帮助。

#import "ViewController.h"
#import <WebKit/WebKit.h>


@interface ViewController () <WKScriptMessageHandler, WKNavigationDelegate>

@property (weak, nonatomic) IBOutlet UIButton *callJavascriptButton;
@property (strong, nonatomic) WKWebView *webView;
@property (strong, nonatomic) UIButton *scriptButton;

@end


@implementation ViewController

- (void)viewDidLoad
{
[super viewDidLoad];

// WKWebView
WKWebViewConfiguration *configuration = [[WKWebViewConfiguration alloc] init];
WKUserContentController *controller = [[WKUserContentController alloc] init];

// Add addScriptMessageHandler in javascript: 
window.webkit.messageHandlers.MyObserver.postMessage()
[controller addScriptMessageHandler:self name:@"MyObserver"];
configuration.userContentController = controller;



[self.view addSubview:self.webView];

// baseURL needs to be set for local files to load correctly
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"index" 
ofType:@"html"];
NSString *html = [NSString stringWithContentsOfFile:filePath 
encoding:NSUTF8StringEncoding error:nil];
[self.webView loadHTMLString:html baseURL:[NSBundle mainBundle].resourceURL];

}

- (IBAction)callJavascriptTapped:(id)sender
{
NSString *script = @"indexJS()";
[self.webView evaluateJavaScript:script completionHandler:^(NSString *result, 
NSError *error) {
    if (error) {
            NSLog(@"evaluateJavaScript error:%@", [error 
localizedDescription]);
        } else {
            NSLog(@"evaluateJavaScript result:%@", result);
        }
    }];
}

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

}

- (void)webView:(WKWebView *)webView didFinishNavigation:(null_unspecified 
WKNavigation *)navigation;


{

}

- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.


}



@end

Answer 1

查看Apple的Swift手册（在iBooks中），了解自动布局的工作原理。从viewDidLoad或viewWillAppear（你需要调整顶部）调用的这样的东西应该可以工作：

目标-C：

- (void) example {
    WKWebView *webView = [[WKWebView alloc] initWithFrame: CGRectZero];
    webView.translatesAutoresizingMaskIntoConstraints = NO;
    [self.view addSubview: webView];
    [webView.leftAnchor constraintEqualToAnchor: self.view.leftAnchor].active = YES;
    [webView.rightAnchor constraintEqualToAnchor: self.view.rightAnchor].active = YES;
    [webView.centerXAnchor constraintEqualToAnchor: self.view.centerXAnchor].active = YES;
    [webView.topAnchor constraintEqualToAnchor: self.view.topAnchor].active = YES;
    [webView.bottomAnchor constraintEqualToAnchor: self.view.bottomAnchor].active = YES;
}

斯威夫特：

func example() {
    let webView = WKWebView(frame: .zero)
    webView.translatesAutoresizingMaskIntoConstraints = false
    view.addSubview(webView)
    webView.leftAnchor.constraint(equalTo: view.leftAnchor).isActive = true
    webView.rightAnchor.constraint(equalTo: view.rightAnchor).isActive = true
    webView.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
    webView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
    webView.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
}

Xcode 8.2.1需要一些指导

1 个答案: