在WebView上设置loadURLTImeOutValue

Question

我正在使用PhoneGap和Android,并在外部服务器上安装我的.html和js文件.当我使用以下代码时,该应用程序加载我的外部.html文件,一切正常:

this.setIntegerProperty("loadUrlTimeoutValue", 60000);
this.loadUrl("http://www.myserver.com");

但是,当通过WebView我的工作似乎无法设置loadURLTimeoutValue为WebView:

private WebView webView;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);  

try {
     webView = (WebView) findViewById(R.id.webview);    
     webView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
     webView.loadUrl("http://www.myserver.com");     
}

这不起作用.如何设置超时值WebView？

Answer 1

这是一种模拟所描述行为的解决方法.您可以使用a WebViewClient,并覆盖该onPageStarted方法:

public class MyWebViewClient extends WebViewClient {
    boolean timeout;

    public MyWebViewClient() {
        timeout = true;
    }

    @Override
    public void onPageStarted(WebView view, String url, Bitmap favicon) {
        new Thread(new Runnable() {
            @Override
            public void run() {
                timeout = true;

                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                if(timeout) {
                    // do what you want
                }
            }
        }).start();
    }

    @Override
    public void onPageFinished(WebView view, String url) {
        timeout = false;
    }
}

如果超时,您可以加载例如错误页面...

要添加WebViewClient到您WebView,只需执行此操作:

webView.setWebViewClient(new MyWebViewClient());

Answer 2

我用它来为我的WebView设置一个超时:

public class MyWebViewClient extends WebViewClient {

    boolean timeout = true;

    @Override
    public void onPageStarted(WebView view, String url, Bitmap favicon) {
        Runnable run = new Runnable() {
            public void run() {
                if(timeout) {
                    // do what you want
                    showAlert("Connection Timed out", "Whoops! Something went wrong. Please try again later.");
                }
            }
        };
        Handler myHandler = new Handler(Looper.myLooper());
        myHandler.postDelayed(run, 5000);
    }

    @Override
    public void onPageFinished(WebView view, String url) {
        timeout = false;
    }
}

Answer 3

更改默认超时的正确方法是<preference />在config.xml文件中使用标记,例如:

<preference name="loglevel" value="DEBUG" />
<preference name="loadUrlTimeoutValue" value="60000" />
<preference name="errorUrl" value="file:///android_asset/www/connection_error.html" />

有关更多首选项选项,请参阅Android配置.