通过eclipse连接和页面错误的webview错误

Question

如果在网站的webview期间任何时候没有连接,我怎么能显示错误信息.还有什么办法可以隐藏网页错误,如501,404等.提前感谢,我是Android应用程序的新手,所以请详细说明.

package com.website;

import android.app.Activity;
import android.net.ConnectivityManager;
import android.os.Bundle;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.view.KeyEvent;
import android.view.Window;
import android.content.Context;
import android.net.NetworkInfo;

public class HelloWebView extends Activity {
    WebView webview;
    /** Called when the activity is first created. */
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if ((keyCode == KeyEvent.KEYCODE_BACK) && webview.canGoBack()) {
            webview.goBack();
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.main);
        webview = (WebView) findViewById(R.id.webview);
        WebView.enablePlatformNotifications();
        webview.getSettings().setJavaScriptEnabled(true);
        webview.setScrollBarStyle(WebView.SCROLLBARS_INSIDE_OVERLAY);
        webview.loadUrl("http://www.google.com/");
        webview.setWebViewClient(new HelloWebViewClient());

    }

    private class HelloWebViewClient extends WebViewClient {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return true; 
        }
    }



}

Answer 1

如果没有连接,您可以在加载页面之前始终检查互联网连接.如果互联网介于两者之间或发生任何其他错误,那么您将在onReceivedError下面定义的函数中捕获您的错误.

你需要在你的实现中再实现一个功能WebViewClient:

 @Override
        public void onReceivedError(WebView view, int errorCode,
                String description, String failingUrl) {
            // TODO Auto-generated method stub
            super.onReceivedError(view, errorCode, description, failingUrl);
        }

使用此功能,您将获得网页返回的错误代码,然后您可以采取相应的行动.