Ask: Service can display a Yes / No prompt box?

Ask a question, Service, when the condition is satisfied, displays a Yes / No prompt box to the forefront of Android, there are ways to achieve it?

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Bomb inside a AlertDialog directly in the Service will be able to
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In general AlertDialog added:

 dialog.getWindow () setType (WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);. 

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Upstairs is feasible, it can do. Write an activity as a parent, to receive the broadcast, all the buttons you need to display the page inherit it when prompted servce display button sends a broadcast request when needed
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Positive Solutions for Service 2nd Floor, system-level pop-up dialog box can also use the notification
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Thank you, I look to see.