Sometimes the problem can not be displayed AlertDialog!

Code is as follows:
new AlertDialog.Builder (this). setIcon (R.drawable.test_drawable)
. SetMessage ("Test Message")
. SetPositiveButton ("OK", new DialogInterface.OnClickListener () {
public void onClick (DialogInterface dialog, int which) {
}
})
. SetNegativeButton ("Cancel", new DialogInterface.OnClickListener () {
public void onClick (DialogInterface dialog, int which) {
}
.}) Show ();

Like a dialog, sometimes during the execution of the dialog can not be displayed, the screen darkens. Then the above code has been executed, but the dialog will not be displayed.
Effects just like new AlertDialog.Builder (this) show ();. Same.

How Will should solve this problem? Thank you!

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The same question, how is it?
Reply:
Seeking answers to the same question ah ~ ~ ~ ~ ~ ~ ~ ~ ~ 555 to get it?
Reply:
Landlord, this issue is resolved yet, help