Android的ProgessBar而加载的WebView [英] Android ProgessBar while loading WebView

问题描述

在我的应用程序，我有一个的WebView它加载从互联网上的任何URL。现在，有时由于较慢的网络页面需要很长的时间来加载，用户只能看到空白屏幕。

In my application, I have a WebView which loads any URL from the internet. Now, sometimes due to slow networks the page takes a long time to load and the user sees only a blank screen.

我要显示一个进度条，而web视图被加载，隐藏在web视图被完全加载progessBar。

I want to show a progressBar while the webView gets loaded and hide the progessBar when the webView gets loaded completely.

我知道如何使用的进度和AsyncTasks，但这里是我的问题。

I know how to use the progressBar and AsyncTasks, but here is my problem.

这是我用来加载web视图我的code。

This is the code that I use to load my webView.

    mWebView = (WebView) findViewById(R.id.webview);
    mWebView.getSettings().setJavaScriptEnabled(true);
    mWebView.setWebViewClient(new HelloWebViewClient());
    mWebView.loadUrl(web_URL);

和本我的自定义WebViewClient类

And this my custom WebViewClient class

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

现在，如果我尝试显示使用进度异步任务，然后我想我将不得不给code要加载的URL在 doInBackGround（）我的AsyncTask的功能，并显示通过 onProgressUpdate（）函数的进展。

Now, if I try to show the progressBar using Async Tasks then I guess I would have to give the code to load the URL in the doInBackGround() function of my AsyncTask and show the progress through the onProgressUpdate() function.

不过，我怎么加载的URL doInBackground（）为 doInBackground（）在在非UI线程上运行，我将无法使用<强> mWebView.loadUrl（的web_url）里面。

But, how do I load the URL inside the doInBackground() as doInBackground() runs on the Non-UI thread and I wont be able to use mWebView.loadUrl(web_URL) inside it.

有什么建议？我失去了一些东西明显？请指引我。

Any suggestions ? Am I missing something obvious ? Please guide me.

推荐答案

检查源$ C ​​$ C。帮助您和您解决问题...

Check the source code. Help you and solve your problem...

public class AppWebViewClients extends WebViewClient {
     private ProgressBar progressBar;

    public AppWebViewClients(ProgressBar progressBar) {
        this.progressBar=progressBar;
        progressBar.setVisibility(View.VISIBLE);
    }
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        // TODO Auto-generated method stub
        view.loadUrl(url);
        return true;
    }

    @Override
    public void onPageFinished(WebView view, String url) {
        // TODO Auto-generated method stub
        super.onPageFinished(view, url);
        progressBar.setVisibility(View.GONE);
    }
}

我觉得它帮助你。

I think it help you.

感谢。

这篇关于Android的ProgessBar而加载的WebView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！