Android 错误:AsyncTask 中的窗口泄漏 [英] Android Error: Window Leaked in AsyncTask

问题描述

我只是有时会出现一个错误，提示 Activity com.prueba.omnibus.EspacialTecnico 已泄露最初添加到此处的窗口 com.android.internal.policy.impl.PhoneWindow$DecorView@41e794a0当活动完成并执行 asynctask 函数时会发生这种情况.我已经搜索过了，但我不知道可能是什么问题.

I have only sometimes an error which says Activity com.prueba.omnibus.EspacialTecnico has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@41e794a0 that was originally added here This happens when the activity finishes and an asynctask function is executed. I have searched but I have no idea what the problem could be.

当用户点击完成"并发生错误时执行的操作.

Action that is doen when the user clicks "finish" and the error happens.

protected Dialog onCreateDialog(int id) {
    super.onCreateDialog(id);
    switch (id) {
    case (int) DIALOG_ALERT_SALIR:
        return new AlertDialog.Builder(this)
                .setIcon(R.drawable.icon_warning)
                .setTitle(R.string.warning)
                .setMessage(R.string.confsalir)
                .setPositiveButton(R.string.alert_dialog_ok,
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog,
                                    int whichButton) {
                                if (batteryReceiver == null){   
                                }
                                else{
                                    try{
                                        unregisterReceiver(batteryReceiver);
                                    }catch(IllegalArgumentException iae){
                                    }
                                    batteryReceiver = null;
                                }           



                               Correccion();
                               Parseo();
                               reloj.cancel();
                               if (Titulacion.IsReachable1(getApplicationContext())){
                                new CreateResultados().execute();


                                }
                               EspacialTecnico.this.finish();
                               try {
                                    XMLResumen.escribirXMLResume();
                                } catch (FileNotFoundException e) {
                                    // TODO Auto-generated catch block
                                    e.printStackTrace();
                                }}


                       })
                .setNegativeButton(R.string.alert_dialog_cancel,
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog,
                                    int whichButton) {

                            }
                        })

                .create();
    }

    return null;

}

异步任务函数错误可能是由对话框产生的吗?

Asynctask Function Could the error be produced by the dialog?

class CreateResultados extends AsyncTask<String, String, String> {


        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            pDialog = new ProgressDialog(EspacialTecnico.this);
            pDialog.setMessage("Transfiriendo...");
            pDialog.setIndeterminate(false);
            pDialog.setCancelable(false);
            pDialog.show();
        }


        protected String doInBackground(String... args) {


            List<NameValuePair> params = new ArrayList<NameValuePair>();
            params.add(new BasicNameValuePair("id", Ident.getDNI()));
            params.add(new BasicNameValuePair("nombre", Nombres.getNombre()));
            params.add(new BasicNameValuePair("tablet", Nombres.Tablet()));
            params.add(new BasicNameValuePair("fecha", Titulacion.fecha()));
            params.add(new BasicNameValuePair("test", nombre));
            params.add(new BasicNameValuePair("correctas", correctasString));
            params.add(new BasicNameValuePair("errores", fallosString));
            params.add(new BasicNameValuePair("PC", PC));



            JSONObject json = jsonParser.makeHttpRequest(url_crear_resultados,
                    "POST", params);
            Log.d("Create Response", json.toString());


            try {
                int success = json.getInt(TAG_SUCCESS);

                if (success == 1) {


                } else {

                }
            } catch (JSONException e) {
                e.printStackTrace();
            }

            return null;
        }



        protected void onPostExecute(String file_url) {
            pDialog.dismiss();
        }
    }

有没有做过什么坏事"?感谢您的帮助

Is there anything "bad" done? Thanks for the help

推荐答案

此异常通常来自活动完成时仍处于活动状态的对话框.

This exception usually comes from dialogs that are still active when the activity is finishing.

在 onPreExecute() 中，您创建了一个新对话框，但可能是这样 pDialog 已经拥有对活动对话框的引用.一些解决方法:

In onPreExecute() you create a new dialog but it might be so that pDialog already holds a reference to an active dialog. Some ways around it:

• 在创建新的之前检查 pDialog == null.解除后为 pDialog 分配一个 null.

• Check for pDialog == null before creating a new one. Assign a null to pDialog after dismissing it.

如果 pDialog != null，dismiss() 在创建新对话框之前先将其关闭.

If pDialog != null, dismiss() it first before creating a new dialog.

(另外 super.onCreateDialog() 是不必要的，因为您没有对返回的 Dialog 做任何事情.)

(Also super.onCreateDialog() is unnecessary as you're not doing anything with the returned Dialog.)

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