title: AlertDialog.show() makes my app crash
body: <p>here's my problem :</p>
  
  <p>I'm trying to show a AlertDialog, but i can't seem to be able to do it.</p>
  
  <p>Here's my code :</p>
  
  <pre><code>tv.setOnClickListener(new OnClickListener()
      {
          @Override
          public void onClick(View arg0)
          {
              final EditText input = new EditText(c);
  
              AlertDialog.Builder adb = new AlertDialog.Builder(c);
              adb.setTitle(lb)
              .setMessage("Test")
              .setView(input)
              .setPositiveButton("Ok", new DialogInterface.OnClickListener()
              {
                  @Override
                  public void onClick(DialogInterface dialog, int which)
                  {
                      //tv.setText(input.getEditableText().toString());
                      Toast.makeText(c, input.getEditableText().toString(), Toast.LENGTH_LONG).show(); 
                  }
              })
              .setNegativeButton("Cancel", new DialogInterface.OnClickListener()
              {
                    public void onClick(DialogInterface dialog, int whichButton)
                    {
                        dialog.cancel();
                    }
              }).show();
          }
      });
  </code></pre>
  
  <p>I want to show this AlertDialog when user click on a label, then change the label value with the edit text one when user press OK.</p>
  
  <p>But when it comes to show the dialog on click, it crashes.</p>
  
  <pre><code>07-18 16:04:59.240: E/AndroidRuntime(10503): FATAL EXCEPTION: main
  07-18 16:04:59.240: E/AndroidRuntime(10503):    android.view.WindowManager$BadTokenException: Unable to add window -- 
  token null is not for an application
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at     android.view.ViewRootImpl.setView(ViewRootImpl.java:710)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at   android.view.WindowManagerImpl.addView(WindowManagerImpl.java:345)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at   android.view.WindowManagerImpl.addView(WindowManagerImpl.java:224)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:149)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at android.app.Dialog.show(Dialog.java:277)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at android.app.AlertDialog$Builder.show(AlertDialog.java:932)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at com.technicachat.webdatadomo.Consignes$2$1.run(Consignes.java:114)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at android.app.Activity.runOnUiThread(Activity.java:4784)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at com.technicachat.webdatadomo.Consignes$2.onClick(Consignes.java:90)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at android.view.View.performClick(View.java:4211)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at android.view.View$PerformClick.run(View.java:17267)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at android.os.Handler.handleCallback(Handler.java:615)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at android.os.Handler.dispatchMessage(Handler.java:92)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at android.os.Looper.loop(Looper.java:137)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at android.app.ActivityThread.main(ActivityThread.java:4898)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at java.lang.reflect.Method.invokeNative(Native Method)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at java.lang.reflect.Method.invoke(Method.java:511)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at  com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
  07-18 16:04:59.240: E/AndroidRuntime(10503):    at dalvik.system.NativeStart.main(Native Method)
  </code></pre>
  
  <p>Fewer lines before i got this message :</p>
  
  <pre><code>07-18 16:04:56.645: I/Choreographer(10503): Skipped 32 frames!  The application may be doing too much work on its main thread.
  </code></pre>
  
  <p>I know what it means, but i'm just showing a dialog, it's not this much work !</p>
  
  <p>I hope you guys can help me !</p>
  
  <p>Bye</p>