Webview在Ice Cream Sandwitch中显示白色空白页

在我的webview中，我加载了一个URL，其中包含一个电video道直播的嵌入式video播放器。 除了ICS（4）之外，它在Android的所有操作系统版本中都能正常工作。 第一次它很好地播放video，但是当我回到包含video的那个页面再来时，video不会加载并显示空白页面。 如果我从应用程序设置强制停止应用程序并再次启动应用程序然后它运行良好然后像往常一样再次出现白屏，我已经实施了很多策略，这是最新的，我完全被困在这里：

public class Livetvwebview extends Activity { RelativeLayout a; WebView webtv; String url; VideoView video; WChromeClient chromeClient; WebViewClient wvClient; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); // requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); getWindow().requestFeature(Window.FEATURE_PROGRESS); setContentView(R.layout.livewebview); Toast.makeText(getApplicationContext(), "Channel is loading..This may take upto a minute", Toast.LENGTH_LONG).show(); url = getIntent().getStringExtra("tvchannel"); Log.i("TVURL", url); webtv = (WebView) findViewById(R.id.webViewlive); webtv.clearCache(true); webtv.loadUrl(url); webtv.getSettings().setLoadWithOverviewMode(true); webtv.getSettings().setUseWideViewPort(true); webtv.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY); webtv.setWebChromeClient(new WChromeClient()); webtv.setWebViewClient(new myWebClient()); webtv.getSettings().setJavaScriptEnabled(true); webtv.getSettings().setPluginState(PluginState.ON); webtv.getSettings().setDomStorageEnabled(true); } 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); } @Override public boolean shouldOverrideUrlLoading(WebView view, String url) { // TODO Auto-generated method stub view.loadUrl(url); return true; } @Override public void onPageFinished(WebView view, String url) { // TODO Auto-generated method stub super.onPageFinished(view, url); } } @SuppressLint("NewApi") @Override protected void onPause() { // TODO Auto-generated method stub WebSettings webSettings = webtv.getSettings(); webSettings.setCacheMode(WebSettings.LOAD_NO_CACHE); webtv.onPause(); this.finish(); super.onPause(); } @SuppressLint("NewApi") @Override protected void onResume() { webtv.onResume(); super.onResume(); } @Override protected void onDestroy() { // TODO Auto-generated method stub // android.os.Process.killProcess(android.os.Process.myPid()); Editor editor = getSharedPreferences("clear_cache", Context.MODE_PRIVATE).edit(); editor.clear(); editor.commit(); trimCache(this); super.onDestroy(); } class WChromeClient extends WebChromeClient { @Override public void onProgressChanged(WebView view, int progress) { Log.i("Method", "Onrogresschanged"); Livetvwebview.this.setTitle("Loading..."); Livetvwebview.this.setProgress(progress * 100); if (progress == 100) Livetvwebview.this.setTitle("LiveTv"); } @Override public void onShowCustomView(View view, CustomViewCallback callback) { // TODO Auto-generated method stub super.onShowCustomView(view, callback); if (view instanceof FrameLayout) { FrameLayout frame = (FrameLayout) view; if (frame.getFocusedChild() instanceof VideoView) { webtv.setVisibility(View.GONE); video = (VideoView) frame.getFocusedChild(); FrameLayout.LayoutParams par = new FrameLayout.LayoutParams( LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT); par.gravity = Gravity.CENTER_HORIZONTAL; video.setLayoutParams(par); frame.removeView(video); a.addView(video); video.setOnCompletionListener(new OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { Toast.makeText(Livetvwebview.this, "Video completed", Toast.LENGTH_LONG) .show(); } }); video.setOnErrorListener(new OnErrorListener() { @Override public boolean onError(MediaPlayer mp, int what, int extra) { Toast.makeText(Livetvwebview.this, "Encountered some error", Toast.LENGTH_LONG) .show(); return true; } }); video.start(); } } } } public static void trimCache(Context context) { try { File dir = context.getCacheDir(); if (dir != null && dir.isDirectory()) { deleteDir(dir); } } catch (Exception e) { // TODO: handle exception } } public static boolean deleteDir(File dir) { if (dir != null && dir.isDirectory()) { String[] children = dir.list(); for (int i = 0; i < children.length; i++) { boolean success = deleteDir(new File(dir, children[i])); if (!success) { return false; } } } return dir.delete(); } } 

有人可以帮我吗？

Answer 1

经过很长一段时间的研究，我自己发现当我写入onPause（）

 webtv.destroy(); 

代替

 webtv.onPause(); 

解决问题:)