我在后台发生了这个错误记录：
10-06 14:05:47.787: W/webcore(554): java.lang.Throwable: EventHub.removeMessages(int what = 107) is not supported before the WebViewCore is set up.
10-06 14:05:47.787: W/webcore(554): at android.webkit.WebViewCore$EventHub.removeMessages(WebViewCore.java:1683)
10-06 14:05:47.787: W/webcore(554): at android.webkit.WebViewCore$EventHub.access$7900(WebViewCore.java:926)
10-06 14:05:47.787: W/webcore(554): at android.webkit.WebViewCore.removeMessages(WebViewCore.java:1795)
10-06 14:05:47.787: W/webcore(554): at android.webkit.WebView.sendOurVisibleRect(WebView.java:2917)
10-06 14:05:47.787: W/webcore(554): at android.webkit.ZoomManager.setZoomScale(ZoomManager.java:593)
10-06 14:05:47.787: W/webcore(554): at android.webkit.ZoomManager.access$1700(ZoomManager.java:49)
10-06 14:05:47.787: W/webcore(554): at android.webkit.ZoomManager$PostScale.run(ZoomManager.java:984)
10-06 14:05:47.787: W/webcore(554): at android.os.Handler.handleCallback(Handler.java:605)
10-06 14:05:47.787: W/webcore(554): at android.os.Handler.dispatchMessage(Handler.java:92)
10-06 14:05:47.787: W/webcore(554): at android.os.Looper.loop(Looper.java:137)
10-06 14:05:47.787: W/webcore(554): at android.app.ActivityThread.main(ActivityThread.java:4424)
10-06 14:05:47.787: W/webcore(554): at java.lang.reflect.Method.invokeNative(Native Method)
10-06 14:05:47.787: W/webcore(554): at java.lang.reflect.Method.invoke(Method.java:511)
10-06 14:05:47.787: W/webcore(554): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
10-06 14:05:47.787: W/webcore(554): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
10-06 14:05:47.787: W/webcore(554): at dalvik.system.NativeStart.main(Native Method)
10-06 14:05:55.197: E/chromium(554): external/chromium/net/disk_cache/backend_impl.cc:1107: [1006/140555:ERROR:backend_impl.cc(1107)] Critical error found -8
当我第一次打开应该加载 webview 的屏幕时会发生这种情况。有谁知道为什么会这样？
这是我这个非常短的课程的代码：
package com.problemio;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import utils.SendEmail;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.KeyEvent;
import android.view.View;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.webkit.WebSettings.PluginState;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.RadioGroup.OnCheckedChangeListener;
import com.flurry.android.FlurryAgent;
public class VideosActivity extends BaseActivity
{
WebView webview = null;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
FlurryAgent.onStartSession(this, "8CA5LTZ5M73EG8R35SXG");
webview = new WebView(this);
setContentView(webview);
webview.getSettings().setAppCacheEnabled(false);
webview.getSettings().setJavaScriptEnabled(true);
webview.setInitialScale(1);
webview.getSettings().setPluginState(PluginState.ON);
WebSettings webSettings = webview.getSettings();
webSettings.setLoadsImagesAutomatically(true);
webSettings.setLoadWithOverviewMode(true);
webSettings.setBuiltInZoomControls(true);
//webSettings.setAllowContentAccess(true);
//webSettings.setSupportZoom(true);
webSettings.setUseWideViewPort(true);
webview.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return false;
}
});
webview.setWebChromeClient(new WebChromeClient(){});
webSettings.setJavaScriptEnabled(true);
webSettings.setDomStorageEnabled(true);
webSettings.setAppCacheEnabled(true);
webSettings.setAppCachePath(getApplicationContext().getFilesDir().getAbsolutePath() + "/cache");
webSettings.setDatabaseEnabled(true);
webSettings.setDatabasePath(getApplicationContext().getFilesDir().getAbsolutePath() + "/databases");
webview.loadUrl("http://www.youtube.com/user/Okudjavavich");
}
@Override
public void onPause()
{
super.onPause();
// your code
try
{
webview.clearCache(true);
webview.getSettings().setAppCacheEnabled(false);
webview.clearView();
webview.stopLoading();
webview.destroy();
this.finish();
}
catch ( Exception e )
{
}
}
@Override
public void onDestroy()
{
super.onDestroy();
// your code
try
{
webview.getSettings().setBuiltInZoomControls(true);
}
catch ( Exception e )
{
}
}
@Override
public void onStop()
{
super.onStop();
// your code
FlurryAgent.onEndSession(this);
//webview.goBack();
try
{
webview.clearView();
webview.getSettings().setAppCacheEnabled(false);
webview.stopLoading();
webview.destroy();
}
catch ( Exception e )
{
//sendEmail ("Podcast error" , e.getMessage() + "" );
}
this.finish();
}
@Override
protected void onResume()
{
super.onResume();
try
{
webview.onResume();
}
catch ( Exception e )
{
}
}
@Override
protected void onStart()
{
super.onStart();
}
@Override
protected void onRestart()
{
super.onRestart();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event)
{
if ((keyCode == KeyEvent.KEYCODE_BACK) && webview.canGoBack())
{
webview.goBack();
return true;
}
return super.onKeyDown(keyCode, event);
}
//@Override
public void onPageFinished(WebView view, String url)
{
view.clearCache(true);
}
public void onBackPressed ( )
{
webview.clearView();
}
}