我开发一个应用程序，有一个片段，显示网站的web视图。对于慢速连接它需要时间来加载网页和应用程序获取，所以我想告诉我的片段的全屏加载微调空白几秒钟。我发现源$ C ​​$ C，但我不知道如何在我的课扩展片段实现这一点。

I am developing an app that has a fragment to show website on the webview. For slow connection it takes times to load the website and the app gets blank for few seconds so I want to show a full screen loading spinner in my fragment. I have found source code but I don't know how to implement this in my class that extends fragment.

这是我的片段，我想展示的网站之前，以显示全屏加载。

This is my fragment where I want to show the full screen loading before showing the website.

    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View V = inflater.inflate(R.layout.fragment_a, container, false);

        String url="http://www.hotelsearcher.net/";
        Bundle args = getArguments();
        if (args  != null){
            url = args.getString("position");
        }
        WebView webView= (WebView) V.findViewById(R.id.webView1);
        WebSettings webViewSettings = webView.getSettings();
        webViewSettings.setJavaScriptCanOpenWindowsAutomatically(true);
        webViewSettings.setJavaScriptEnabled(true);
        webViewSettings.setPluginState(PluginState.ON);
        webView.setWebViewClient(new WebViewClient());
        adview =(AdView) V.findViewById(R.id.ads);
        Ads.loadAds(adview);
        webView.loadUrl(url);
        return V;

    }
}

我发现这是code： https://gist.github.com/ daichan4649 / 5344979 /下载＃

谁能告诉我，我应该怎么写。要实现该功能。

Can anybody tell me what should I write. to implement the feature.

推荐答案

在你的 onCreateView（）您需要出示进度，因为你的 webView.loadUrl（URL）需要时间来加载你的的WebView 的互联网内容。所以，你需要注册一个回调，当你的的WebView 加载完成您的内容。你可以听这样的：

In your onCreateView() you need to show a ProgressBar, since your webView.loadUrl(url) takes time to load the internet content on your WebView. So you need to register for a call back when your WebView is done loading your content. You can listen like this :

mWebView.setWebViewClient(new WebViewClient() {

   public void onPageFinished(WebView view, String url) {
        // Cancel your ProgressBar here
    }
});

在你的 onPageFinished（）取消进度因为你的的WebView 已完成加载的内容。

Inside your onPageFinished() cancel your ProgressBar since your WebView has completed loading the content.

工作code

public class MainActivity extends Activity {

    private String url = "https://www.google.co.in/";
    ProgressDialog pb;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        pb = new ProgressDialog(this);
        pb.setTitle("Connecting Station");
        pb.setMessage("Please Wait....");
        pb.setCancelable(false);
        pb.show();
        WebView webView = (WebView) findViewById(R.id.webView);
        WebSettings webViewSettings = webView.getSettings();
        webViewSettings.setJavaScriptCanOpenWindowsAutomatically(true);
        webViewSettings.setJavaScriptEnabled(true);
        webViewSettings.setPluginState(PluginState.ON);
        webView.loadUrl(url);
        webView.setWebViewClient(new WebViewClient() {

            public void onPageFinished(WebView view, String url) {
                pb.dismiss();
            }
        });
    }
}