AndroidWebView常见问题及处理方案

  /**
  * 显示自定义错误提示页面，用一个View覆盖在WebView
  */
  protected void showErrorPage() {
  LinearLayout webParentView = (LinearLayout)mWebView.getParent();
  initErrorPage();
  while (webParentView.getChildCount() > ) {
  webParentView.removeViewAt( );
  }
  LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT);
  webParentView.addView(mErrorView, , lp);
  mIsErrorPage = true ;
  }
  protected void hideErrorPage() {
  LinearLayout webParentView = (LinearLayout)mWebView.getParent();
  mIsErrorPage = false ;
  while (webParentView.getChildCount() > ) {
  webParentView.removeViewAt( );
  }
  }
  protected void initErrorPage() {
  if (mErrorView == null ) {
  mErrorView = View.inflate( this , R.layout.online_error, null );
  Button button = (Button)mErrorView.findViewById(R.id.online_error_btn_retry);
  button.setOnClickListener( new OnClickListener() {
  public void onClick(View v) {
  mWebView.reload();
  }
  });
  mErrorView.setOnClickListener( null );
  }
  }

COOKIESyncManager.createInstance( this );
  COOKIESyncManager.getInstance().startSync();
  COOKIEManager.getInstance().removeSessionCOOKIE();

 if (WebView.getContentHeight*WebView.getScale() == (webview.getHeight()+WebView.getScrollY())){ //已经处于底端 }

Ex:
  @SuppressLint ( "NewApi" )
  @Override
  public WebResourceResponse shouldInterceptRequest(WebView view,String url) {
  // 非超链接(如Ajax)请求无法直接添加请求头，现拼接到url末尾,这里拼接一个imei作为示例
  String ajaxUrl = url;
  // 如标识:req=ajax
  if (url.contains( "req=ajax" )) {
  ajaxUrl += "&imei=" + imei;
  }
  return super .shouldInterceptRequest(view, ajaxUrl);
  }

@Override
  public void onLoadResource(WebView view, String url) {
  mEventListener.onWebViewEvent(CustomWebView. this , OnWebViewEventListener.EVENT_ON_LOAD_RESOURCE, url);
  if (url.indexOf( ".jpg" ) > ) {
  hideProgress(); //请求图片时即显示页面
  mEventListener.onWebViewEvent(CustomWebView. this , OnWebViewEventListener.EVENT_ON_HIDE_PROGRESS, view.getUrl());
  }
  super .onLoadResource(view, url);
  }

mWebView.setOnLongClickListener( new OnLongClickListener() {
  @Override
  public boolean onLongClick(View v) {
  return true ;
  }
  });

 String temp = " 
 " ;
  String mimeType = "text/html" ;
  String encoding = "utf-8" ;
  web.loadDataWithBaseURL( "null" , temp, mimeType, encoding, "" );