La actividad ha filtrado la ventana [email protected] que se agregó originalmente aquí

Question

Este problema me vuelve loco. Extraño algunos conocimientos básicos pero muy importantes sobre cómo manejar operaciones largas en un nuevo hilo creado dentro de una actividad y cómo modificar los componentes de visualización como el texto y demás después de la larga operación.

Primero te voy a mostrar la parte de mi código en la que se presenta este problema:

mProgressDialog = ProgressDialog.show(mContext, "Tripplanner", "please wait...", true, false); 
connectAndGetRoute(); 


private void connectAndGetRoute(){ 

    new Thread(){ 
     @Override 
     public void run() { 
      try { 
      if(!connectTo9292ov()) return;// conncetto9292ov() connects to a website, parses the reasult into an arraylist. The arraylist contains route. 

      } catch(UnknownHostException e){ 
       Toast.makeText(mContext, "failed to connect to server", Toast.LENGTH_LONG).show(); 
      }catch (ClientProtocolException e) { 
       Toast.makeText(mContext, "failed to connect to server", Toast.LENGTH_LONG).show();     
     } catch (IOException e) { 
       Toast.makeText(mContext, "failed to connect to server", Toast.LENGTH_LONG).show(); 
      } 

      handler.post(runConnection); 
     } 

    }.start(); 

    handler = new Handler(); 
    runConnection = new Runnable(){ 
     @Override 
     public void run() { 
      mProgressDialog.dismiss(); 
      showOnScreen(); 
     } 
    }; 
} 

y este es el error que consigo:

ERROR/WindowManager(8297): Activity mp.tripplanner.OvPlanner has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@46368a28 that was originally added here 
ERROR/WindowManager(8297): android.view.WindowLeaked: Activity mp.tripplanner.OvPlanner has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@46368a28 that was originally added here 
ERROR/WindowManager(8297): at android.view.ViewRoot.<init>(ViewRoot.java:251) 
ERROR/WindowManager(8297): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148) 
ERROR/WindowManager(8297): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91) 
ERROR/WindowManager(8297): at android.view.Window$LocalWindowManager.addView(Window.java:424) 
ERROR/WindowManager(8297): at android.app.Dialog.show(Dialog.java:241) 
ERROR/WindowManager(8297): at android.app.ProgressDialog.show(ProgressDialog.java:107) 
ERROR/WindowManager(8297): at android.app.ProgressDialog.show(ProgressDialog.java:95) 
ERROR/WindowManager(8297): at mp.tripplanner.OvPlanner$3.onClick(OvPlanner.java:351) 
ERROR/WindowManager(8297): at android.view.View.performClick(View.java:2408) 
ERROR/WindowManager(8297): at android.view.View$PerformClick.run(View.java:8817) 
ERROR/WindowManager(8297): at android.os.Handler.handleCallback(Handler.java:587) 
ERROR/WindowManager(8297): at android.os.Handler.dispatchMessage(Handler.java:92) 
ERROR/WindowManager(8297): at android.os.Looper.loop(Looper.java:144) 
ERROR/WindowManager(8297): at android.app.ActivityThread.main(ActivityThread.java:4937) 
ERROR/WindowManager(8297): at java.lang.reflect.Method.invokeNative(Native Method) 
ERROR/WindowManager(8297): at java.lang.reflect.Method.invoke(Method.java:521) 
ERROR/WindowManager(8297): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
ERROR/WindowManager(8297): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
ERROR/WindowManager(8297): at dalvik.system.NativeStart.main(Native Method) 

Pero otro mensaje de error se escribe en el registro antes de la de arriba, la cual es:

ERROR/AndroidRuntime(8297): FATAL EXCEPTION: Thread-9 
ERROR/AndroidRuntime(8297): java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare() 
ERROR/AndroidRuntime(8297): at android.os.Handler.<init>(Handler.java:121) 
ERROR/AndroidRuntime(8297): at android.widget.Toast.<init>(Toast.java:68) 
ERROR/AndroidRuntime(8297): at android.widget.Toast.makeText(Toast.java:231) 
ERROR/AndroidRuntime(8297): at mp.tripplanner.OvPlanner$4.run(OvPlanner.java:371) 

Gracias por su ayuda.

Answer 1

Debe crear su Handler en su subproceso de interfaz de usuario para que pueda actualizar la interfaz de usuario. me permitiría utilizar el método sendMessage del manipulador, en lugar de publicar un ejecutable:

private static final int HANDLER_MESSAGE_ERROR = 0; 
private static final int HANDLER_MESSAGE_COMPLETED = 1; 
... 
private void connectAndGetRoute(){ 
    new Thread(){ 
     @Override 
     public void run() { 
      try { 
       if(!connectTo9292ov()) return; 

      } catch(UnknownHostException e){ 
       sendMessage(HANDLER_MESSAGE_ERROR); 
      } catch (ClientProtocolException e) { 
       sendMessage(HANDLER_MESSAGE_ERROR); 
      } catch (IOException e) { 
       sendMessage(HANDLER_MESSAGE_ERROR); 
      } finally { 
       sendMessage(HANDLER_MESSAGE_COMPLETED); 
      } 
     } 
     private void sendMessage(int what){ 
      Message msg = Message.obtain(); 
      msg.what = what; 
      mHandler.sendMessage(msg); 
     } 
    }.start(); 

} 
... 
private Handler mHandler = new Handler(){ 
    @Override 
    public void handleMessage(Message msg) { 
     switch(msg.what){ 
     case HANDLER_MESSAGE_ERROR: 
      Toast.makeText(mContext, "failed to connect to server", Toast.LENGTH_LONG).show(); 
      break; 
     case HANDLER_MESSAGE_COMPLETED: 
      mProgressDialog.dismiss(); 
      showOnScreen(); 
      break; 
     default: 
      Log.w("MyTag","Warning: message type \""+msg.what+"\" not supported"); 
     } 
    } 
} 

Answer 2

Solo una idea rápida.

Creo que son tus mensajes tostados dentro del hilo. Intenta comentarlos.

Si aún desea mostrar mensajes, guarde el estado de su hilo y manipúlelo en su controlador. Llame para que su manejador de bloque finally

mProgressDialog = ProgressDialog.show(mContext, "Tripplanner", "please wait...", true, false); 
connectAndGetRoute(); 


private void connectAndGetRoute(){ 

    new Thread(){ 
     @Override 
     public void run() { 
      try { 
      if(!connectTo9292ov()) return;// conncetto9292ov() connects to a website, parses the reasult into an arraylist. The arraylist contains route. 

      } catch(UnknownHostException e){ 
       // an int member of your activity 
       threadStatus = 404; 
       // Toast.makeText(mContext, "failed to connect to server", Toast.LENGTH_LONG).show(); 
      }catch (ClientProtocolException e) { 
       threadStatus = 404; 
       // Toast.makeText(mContext, "failed to connect to server", Toast.LENGTH_LONG).show();     
     } catch (IOException e) { 
       threadStatus = 404; 
       // Toast.makeText(mContext, "failed to connect to server", Toast.LENGTH_LONG).show(); 
      } 
      finally { 
      handler.post(runConnection);} 
     } 

    }.start(); 

    handler = new Handler(); 
    runConnection = new Runnable(){ 
     @Override 
     public void run() { 
      if (threadStatus == 404) { Toast.makeText(mContext, "failed to connect to server", Toast.LENGTH_LONG).show();} 
      else { 
      mProgressDialog.dismiss(); 
      showOnScreen();} 
     } 
    }; 
} 

Answer 3

Código de ejemplo:

new Thread(new Runnable() {     
       @Override 
       public void run() { 
        doNotUIthings(); 
        updateUI.sendEmptyMessage(0); //Update ui in UI thread 
       } 
       private Handler updateUI = new Handler(){ 
        @Override 
        public void dispatchMessage(Message msg) { 
         super.dispatchMessage(msg); 
         updateUI(); 
        } 
       }; 
      }).start(); 

Pero recomiendo usar AsyncTask en lugar de hebras de Java.