workspace/JuggleMaster/src/com/jm/utility/AsyncTaskCommand.java

   1 package com.jm.utility;\r
   2 \r
   3 import java.lang.ref.WeakReference;\r
   4 \r
   5 import android.app.Activity;\r
   6 import android.app.ProgressDialog;\r
   7 import android.content.DialogInterface;\r
   8 import android.content.DialogInterface.OnKeyListener;\r
   9 import android.os.AsyncTask;\r
  10 import android.view.KeyEvent;\r
  11 \r
  12 import com.jm.R;\r
  13 \r
  14 public class AsyncTaskCommand extends AsyncTask<String, Integer, String> {\r
  15         private WeakReference<Activity> activityRef;\r
  16         private AsyncTaskIF command;\r
  17         private ProgressDialog dialog;\r
  18         private boolean isCancel = false;\r
  19         \r
  20         @SuppressWarnings({ "rawtypes", "unchecked" })\r
  21         public AsyncTaskCommand(Activity activity, AsyncTaskIF command){\r
  22                 this.activityRef = new WeakReference(activity);\r
  23                 this.command = command;\r
  24         }\r
  25 \r
  26         @Override\r
  27         protected void onPreExecute(){\r
  28                 Debug.d(this, "onPreExecute start");\r
  29                 \r
  30                 Activity activity = activityRef.get();\r
  31                 if (activity == null){\r
  32                         return;\r
  33                 }\r
  34                 dialog = new ProgressDialog(activity);\r
  35                 dialog.setIndeterminate(true);\r
  36                 dialog.setCancelable(false);\r
  37                 dialog.setTitle(activity.getString(R.string.calculating));\r
  38                 dialog.setButton(activity.getString(R.string.cancel), new DialogInterface.OnClickListener() {\r
  39                         @Override\r
  40                         public void onClick(DialogInterface dialog, int which) {\r
  41                                 dialog.cancel();\r
  42                                 AsyncTaskCommand.this.cancel(true);\r
  43                         }\r
  44                 });\r
  45                 dialog.setOnKeyListener(new OnKeyListener() {\r
  46                         @Override\r
  47                         public boolean onKey(DialogInterface dialog, int keyCode,\r
  48                                         KeyEvent event) {\r
  49                                 switch (event.getKeyCode()) {\r
  50                                 case KeyEvent.KEYCODE_SEARCH:\r
  51                                         return true;\r
  52                                 }\r
  53                                 return false;\r
  54                         }\r
  55                 });\r
  56                 dialog.show();\r
  57                 Debug.d(this, "onPreExecute end");\r
  58         }\r
  59         \r
  60         @Override\r
  61         protected String doInBackground(String... arg0) {\r
  62                 Debug.d(this, "doInBackground start");\r
  63                 command.doExecute();\r
  64                 Debug.d(this, "doInBackground end");\r
  65                 \r
  66                 return null;\r
  67         }\r
  68         \r
  69         @Override\r
  70         protected void onCancelled(){\r
  71                 Debug.d(this, "onCancelled start");\r
  72                 \r
  73                 isCancel = true;\r
  74                 \r
  75                 if (command != null){\r
  76                         command.cancel();\r
  77                 }               \r
  78                 onPostExecute(null);\r
  79                 Debug.d(this, "onCancelled end");\r
  80         }\r
  81 \r
  82         @Override\r
  83         protected void onPostExecute(String result){\r
  84                 Debug.d(this, "onPostExecute start");\r
  85 \r
  86                 try {\r
  87                         if (command != null){\r
  88                                 command.done(isCancel);\r
  89                                 command = null;                         \r
  90                         }\r
  91                         if (dialog != null){\r
  92                                 dialog.dismiss();\r
  93                                 dialog = null;\r
  94                         }\r
  95                         activityRef = null;\r
  96                 }\r
  97                 catch (RuntimeException e){\r
  98                         Debug.d(this, null, e);\r
  99                         throw e;\r
 100                 }\r
 101                 Debug.d(this, "onPostExecute end");\r
 102         }\r
 103         \r
 104         public void stop(){\r
 105                 Debug.d(this, "stop start");\r
 106                 \r
 107                 if (command != null){\r
 108                         isCancel = true;\r
 109                         command.cancel();\r
 110                 }\r
 111                 // onPostExecute()のdialog.dismiss();でエラーとなるため\r
 112                 // 本質的な解決策ではない\r
 113 //              dialog = null;\r
 114                 if (dialog != null){\r
 115                         dialog.dismiss();\r
 116                         dialog = null;\r
 117                 }\r
 118 \r
 119                 Debug.d(this, "stop end");\r
 120         }\r
 121 }\r