これはandroid webViewで何が起こっていますか？

Question

次の例外が発生し、デバッグできません。

助けてください。
コード：

public class HybridActivity extends Activity { 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     WebView webview=(WebView)findViewById(R.id.webkitWebView1); 
     WebSettings settings=webview.getSettings(); 
     settings.setJavaScriptEnabled(true); 
     settings.setDatabaseEnabled(true); 
     settings.setDomStorageEnabled(true); 
     settings.setAllowFileAccess(true); 
     settings.setBuiltInZoomControls(true); 
     webview.setWebChromeClient(new WebChromeClient()); 

     // webview.loadUrl("file:///android_asset/www/html/hyb.html"); 
     // webview.loadUrl("file:///android_asset/index.html"); 
     try { 
      webview.loadUrl("http://www.google.com"); 
     } catch (Exception e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     MultipleWebViewHanlder webView2 = new MultipleWebViewHanlder(this); 
     webView2.loadNewWebView(); 
    } 
} 

public class MultipleWebViewHanlder { 
    public MultipleWebViewHanlder(Context context) { 
     // TODO Auto-generated constructor stub 
     this.context = context; 
    } 

    public void MultipleWebViewArea(final String command) { 

     final RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT, RelativeLayout.LayoutParams.FILL_PARENT); 
     try { 
      Log.i("","Inside tryyyyyyyyyyyyyyyyyyyyy"); 
      final WebView mWebView = new WebView(context); 

      WebSettings settings=mWebView.getSettings(); 
      settings.setJavaScriptEnabled(true); 
      settings.setDatabaseEnabled(true); 
      settings.setDomStorageEnabled(true); 
      settings.setAllowFileAccess(true); 
      settings.setBuiltInZoomControls(true); 
      mWebView.setWebChromeClient(new WebChromeClient()); 
      JSInterface.handler.post(new Runnable() { 

       @Override 
       public void run() { 
        try { 
         Log.i("","Inside tryyyyyyyyyyyyyyyyyyyy b4 add content viewwwwwwwwww"); 
         Runnable runnable = new Runnable() { 
          public void run() { 
           ((Activity)context).addContentView(mWebView,params); 
           Log.i("","Inside tryyyyyyyyyyyyyyyyyyyy after add content viewwwwwwwwww "); 
           mWebView.loadUrl(((Activity)context).getResources().getString(R.string.DemoURL)); 
          } 
         }; 
         ((Activity)context).runOnUiThread(runnable); 

ログイン：

04-20 10:55:58.052: WARN/dalvikvm(9255): threadid=8: thread exiting with uncaught exception (group=0x400207d8) 
04-20 10:55:58.092: ERROR/AndroidRuntime(9255): FATAL EXCEPTION: WebViewCoreThread 
04-20 10:55:58.092: ERROR/AndroidRuntime(9255): android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views. 
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):  at android.view.ViewRoot.checkThread(ViewRoot.java:2812) 
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):  at android.view.ViewRoot.invalidateChild(ViewRoot.java:607) 
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):  at android.view.ViewRoot.invalidateChildInParent(ViewRoot.java:633) 
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):  at android.view.ViewGroup.invalidateChild(ViewGroup.java:2505) 
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):  at android.view.View.invalidate(View.java:5115) 
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):  at android.webkit.WebView.viewInvalidate(WebView.java:2565) 
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):  at android.webkit.WebView.invalidateContentRect(WebView.java:2584) 
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):  at android.webkit.WebView.access$6200(WebView.java:304) 
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):  at android.webkit.WebView$PrivateHandler.handleMessage(WebView.java:7860) 
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):  at android.os.Handler.dispatchMessage(Handler.java:99) 
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):  at android.os.Looper.loop(Looper.java:123) 
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):  at android.webkit.WebViewCore$WebCoreThread.run(WebViewCore.java:637) 
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):  at java.lang.Thread.run(Thread.java:1096) 
04-20 10:55:58.102: WARN/ActivityManager(172): Force finishing activity com.Hy5/.activity.Hy5CanvasActivity 

Answer 1

それは、コードを見ずに言うのは難しいです が、あなたが、これができた（それの所有者スレッドの外からの要素を変更しようとしているようです他のスレッドからUI要素を変更しようとしているために発生します）。

だから、これを試してみてください。引数として実行可能な受け入れヘルパー関数runOnUiThread()があります：

Runnable runnable = new Runnable() { 
    public void run() { 
     // your code here 
    } 
} 

runOnUiThread(runnable);