Provide custom back navigation | Android Developers

I am adding fragments to back stack like this and at some places I don't add to close drawer on back press android image stack. What I am trying to do is, if there is any fragment in backstack, single onBackPressed migrate to previous fragment. But, if there no Fragment in backstack, it should display Toast for double back press to close the app. I am unable to figure out why?

Atul Tiwari 2 15 You can refer to below code for your need. If you are not using v4 support fragment, then you have to use getFragmentManager instead of getSupportFragmentManager to get the backstack 25 count.

Here I am using boolean value to check if back is clicked, if in 2 seconds it is not clicked again, it will become false again.

Thanks, from your explanation only, I found out that, I am using v4 support fragment, but by mistake i was using getFragmentManager instead of getSupportFragmentManager. After this correction, even my code sample worked. Atul Tiwari Nov 25 '15 at Thanks himanshu — amit pandya Feb 14 at By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Close Drawer On Back Press Android Emulator Service.

Sorry, your previous solution didn't work for me. I tried with adding the first code sample to one of fragment, which on back pressed, just moved back to another fragment, no Toast displayed.

And even for your updated answer, How does both of your code samples identifies, that if there is any fragment in backstack, By using ourmove to it or site, you else show message acknowledge for double that you have read back press? Atul Tiwari Nov 25 '15 at Awesome! Have a nice day. Thank you — NarenderNishad Nov 6 '17 at worked really well. Thanks himanshu — amit pandya Feb 14 at By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service.

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Jul 30,  · Back navigation is how users move backward through the history of screens they previously visited. All Android devices provide a Back button for this type of navigation, so you should not add a Back button to your app’s UI. Depending on the user’s Android device, this button might be a physical button or a software button. In the below code, we have used the closeDrawer(- ) method to close the navigation drawer and openDrawer(- ) method to open the navigation drawer. Complete Tutorial on Firebase Firebase Fundamentals - - ?referralCode=C8F4D9A1DBA6A Firebase.

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