Java-Webview中的进度栏

我无法使此进度栏正常工作.有人可以帮助我提供消息来源吗？我缺少什么吗？

 web = (WebView) findViewById(R.id.webview01);
        progressBar = (ProgressBar) findViewById(R.id.progressBar);
        web.setWebViewClient(new myWebClient());

        //ADDING THIS RESOLVED THE PROGRESS BAR ACTUALLY LOADING.
        web.setWebChromeClient(new WebChromeClient() {
        public void onProgressChanged(WebView view, int progress) {
        progressBar.setProgress(progress); } 
        });
        //ADDING THIS RESOLVED THE PROGRESS BAR ACTUALLY LOADING.

        WebSettings websettings = web.getSettings();
        websettings.setBuiltInZoomControls(true);
        websettings.setUseWideViewPort(true);
        websettings.setJavaScriptEnabled(true);
        websettings.setAllowFileAccess(true);
        websettings.setDomStorageEnabled(true);
        websettings.setLoadWithOverviewMode(true);
        websettings.setSavePassword(true);
        web.loadUrl("http://www.google.com");

然后在代码后面

    //Loading the Actual Webpage
public class myWebClient extends WebViewClient
{
    @Override
    public void onPageStarted(WebView view, String url, Bitmap favicon) {
        // TODO Auto-generated method stub
        super.onPageStarted(view, url, favicon);
        progressBar.setVisibility(View.VISIBLE);

    }

    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        // TODO Auto-generated method stub

        view.loadUrl(url);
        progressBar.setVisibility(View.VISIBLE);
        return true;

    }
    //web.setWebChromeClient(new WebChromeClient() {
    public void onProgressChanged(WebView view, int progress) {
         progressBar.setProgress(progress);

    }




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

        progressBar.setVisibility(View.GONE);
    }

}

Webview本身工作得很好,我只是想拥有一个水平加载栏,类似于海豚,Chrome等浏览器.

这是布局.

 <?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:background="@drawable/bgapp"
 android:fadingEdge="horizontal"
 android:gravity="center"
 android:orientation="vertical" >

 <include
    android:id="@+id/inc_blue"
    android:layout_width="fill_parent"
    android:layout_height="50dp"
    layout="@layout/inc_enphase_bar_with_title_buttons" />

<ProgressBar
    android:id="@+id/progressBar"
    style="?android:attr/progressBarStyleHorizontal"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:minHeight="8dip" />

<WebView
    android:id="@+id/webview01"
    android:layout_width="fill_parent"
    android:layout_height="0dp"
    android:layout_weight="1.15"
    android:fadingEdge="vertical" >

</WebView>

我没有遇到任何错误或烦恼,因此没有logcat,它只是实际加载,它在加载网页时显示进度条,但没有动画或加载动静.

解决方法:

您还应该使用以下命令设置中间进度

progressBar.setProgress(int);

显示进度.您要做的就是显示和隐藏视图

编辑：
 添加以下代码.

   @Override
   public void onProgressChanged(WebView view, int progress) {
     progressBar.setProgress(progress);
   }

抱歉,您需要一个webchromeclient.因此,使用如下所示.放在下面

web.setWebViewClient(new myWebClient());
//add this below line
web.setWebChromeClient(new WebChromeClient() {
   public void onProgressChanged(WebView view, int progress) {
        progressBar.setProgress(progress);
   }
 });

检查WebView Doc,它有一个示例.

标签：webview,progress-bar,loading,java,android
来源： https://codeday.me/bug/20191127/2075367.html