Android 带进度条的WebView 示例代码

复制代码/** * 带进度条的WebView * http://www.cnblogs.com/over140/archive/2013/03/07/2947721.html *  */@SuppressWarnings("deprecation")public class ProgressWebView extends WebView { private ProgressBar progressbar; public ProgressWebView(Context context, AttributeSet attrs) {  super(context, attrs);  progressbar = new ProgressBar(context, null, android.R.attr.progressBarStyleHorizontal);  progressbar.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, 3, 0, 0));  addView(progressbar);  //  setWebViewClient(new WebViewClient(){});  setWebChromeClient(new WebChromeClient()); } public class WebChromeClient extends android.webkit.WebChromeClient {  @Override  public void onProgressChanged(WebView view, int newProgress) {   if (newProgress == 100) {    progressbar.setVisibility(GONE);   } else {    if (progressbar.getVisibility() == GONE)     progressbar.setVisibility(VISIBLE);    progressbar.setProgress(newProgress);   }   super.onProgressChanged(view, newProgress);  } } @Override protected void onScrollChanged(int l, int t, int oldl, int oldt) {  LayoutParams lp = (LayoutParams) progressbar.getLayoutParams();  lp.x = l;  lp.y = t;  progressbar.setLayoutParams(lp);  super.onScrollChanged(l, t, oldl, oldt); }}复制代码

public class WebActivity extends BaseActivity { private ProgressWebView webview; private String url; private String name; @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.commom_web);  // ~~~ 获取参数  url = getIntent().getStringExtra("url");  name = getIntent().getStringExtra("name");  // ~~~ 绑定控件  webview = (ProgressWebView) findViewById(R.id.webview);  // ~~~ 设置数据  titleText.setText(name);  webview.getSettings().setJavaScriptEnabled(true);  webview.setDownloadListener(new DownloadListener() {   @Override   public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) {    if (url != null && url.startsWith("http://"))     startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url)));   }  });  webview.loadUrl(url); }}

<?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:orientation="vertical" > <include layout="@layout/include_title" /> <com.nmbb.ui.widget.ProgressWebView  android:id="@+id/webview"  android:layout_width="fill_parent"  android:layout_height="fill_parent" /></LinearLayout>