我正在尝试从本地存储在webview页面中显示,第一次加载页面时看起来还可以,但是当我删除webview并再次添加它时,它看起来像在图片上(对于4.4,在以前的android版本中只是黑屏)：

webview每次(使用应用程序上下文)添加progrommatcaly,关闭缓存,cookie,并在销毁时将其删除.

这是我的代码：

mLayout = (LinearLayout) view.findViewById(R.id.linear_main);

mWebView = new WebView(getActivity().getApplicationContext());

mWebView.getSettings().setJavaScriptEnabled(true);

mWebView.getSettings().setSaveFormData(false);

mWebView.setInitialScale(1);

mWebView.getSettings().setLoadWithOverviewMode(true);

mWebView.getSettings().setUseWideViewPort(true);

mWebView.getSettings().setAppCacheEnabled(false);

mWebView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);

mWebView.getSettings().setDatabaseEnabled(false);

mWebView.getSettings().setDomStorageEnabled(false);

mWebView.getSettings().setGeolocationEnabled(false);

mWebView.getSettings().setSaveFormData(false);

mWebView.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,

LayoutParams.MATCH_PARENT));

mWebView.setWebChromeClient(new WebChromeClient());

if (Build.VERSION.SDK_INT >= VERSION_CODES.JELLY_BEAN) {

mWebView.getSettings().setAllowUniversalAccessFromFileURLs(true);

}

mWebView.getSettings().setPluginState(WebSettings.PluginState.ON);

mWebView.getSettings().setPluginState(WebSettings.PluginState.ON_DEMAND);

mLayout.addView(mWebView,0);

/// then display page by call

public void display(String path){

Map noCacheHeaders = new HashMap(2);

noCacheHeaders.put("Pragma", "no-cache");

noCacheHeaders.put("Cache-Control", "no-cache");

mWebView.loadUrl(path, noCacheHeaders);

}

/// after display destroy fragment with the WebView

@Override

public void onDestroy() {

super.onDestroy();

CookieSyncManager.createInstance(getActivity().getApplicationContext());

CookieManager cookieManager = CookieManager.getInstance();

cookieManager.removeAllCookie();

mWebView.removeAllViews();

mWebView.destroyDrawingCache();

mWebView.clearDisappearingChildren();

mWebView.clearFormData();

mWebView.clearHistory();

mWebView.clearCache(true);

mWebView.loadUrl("about:blank");

mWebView.pauseTimers();

mLayout.removeAllViews();

mWebView.destroy();

mWebView = null;

getActivity().getApplicationContext().deleteDatabase("webview.db");

getActivity().getApplicationContext().deleteDatabase("webviewCache.db");

}

你能建议我还需要尝试什么=)