Setting default App

My app have feature to send a mail. If user use this he will be prompted to open google-mail-app or another mail-app. But this selection haven't checkbox to set the current user option to default. Is it possible to extend the selection with a default-checkbox?

I know this checkbox from anothe开发者_运维技巧r application such navigation.

thx

It's not possible to hardcode this into an application, however the user can do the following:

Tap the Menu button on your phone and select the Android Settings option. Scroll down to the Applications section and tap it. On the next screen, tap Manage Applications and then the All tab on the subsequent screen. Scroll down the list of apps until you see the old browser listed and tap that entry. On the next screen look for the "Launch by default" section and hit the Clear defaults button.

Source: http://lifehacker.com/5637923/change-the-default-application-for-any-android-phone-task