webView展示progress indicator

? @Override?
public void onCreate(Bundle savedInstanceState) {?
? ? super.onCreate(savedInstanceState);?
? ? getWindow().requestFeature(Window.FEATURE_PROGRESS);?
?
? ? setContentView(R.layout.browser);?
? ? currentURL = BrowserActivity.this.getIntent().getExtras().getString("currentURL");?
?
? ? try {?
? ? ? ? mWebView = (WebView) findViewById(R.id.webview);?
? ? ? ? mWebView.getSettings().setJavaScriptEnabled(true);?
? ? ? ? mWebView.setWebViewClient(new browserActivityClient());?
? ? ? ? setProgressBarIndeterminateVisibility(true);?
? ? ? ? mWebView.loadUrl(currentURL);?
? ? ? ? setProgressBarIndeterminateVisibility(false);?
? ? } catch (Exception e) {?
? ? ? ? Log.e(getClass().getSimpleName(), "Browser: " + e.getMessage());?
? ? ? ? Toast.makeText(this, e.getMessage(), Toast.LENGTH_LONG).show();?
? ? } ?
}?