fix backpress issue(#314) raised in Toolkit-Android

[tejavojjala]

Made the required changes as discussed in BuildmLearn/BuildmLearn-Toolkit-Android#314

[opticod]

@iit2014086 , your implementation in videocollection template goes to a infinite loop when: do restart, press next, then home, and now press back for infinite times. Try to clear the stack at suitable situations.

[tejavojjala]

@opticod seems like the issue is same with Dictation App for the same flow. Update the pr making changes in Dictation and VideoCollection files. Check it now :)

[opticod]

@iit2014086, did you well checked your implementation? Let me know, we will review and merge it.

[tejavojjala]

@opticode Yes, I did.

[opticod]

@iit2014086, why on clicking video item 3 and then pressing backpress redirects the user to content of video item 2? It should only redirect it to home ? no need of changing the natural flow.

[tejavojjala]

@opticod okay I first thought of pressing back should work like pressing "Previous button". Then in flash cards template, If user clicks on 1st card, now after that suppose he chooses 5th from navigation drawer, then on clicking back should user go to 1st card or 4th card?

[opticod]

It will go to 1st card. The back key will move the user to "back state". Also, restart button, cleans some instances from stack.

[tejavojjala]

@opticod When a user goes to the last activity(choose a dictation -> Enter Text -> Click Submit) what should happen on clicking back. Currently it goes back to DetailActivity(with text entered). Shouldn't the application close?(Becoz why go back after submitting he should either restart or exit).

[opticod]

@iit2014086 , for self correction, he can go back to previous submit fragment. (default flow)

[opticod]

@iit2014086, So what is your current implementation?

[tejavojjala]

@opticod
In Dictation and Video:
Whenever user presses Restart a new stack of activities is created into which first we push home activity and then detail activity. This way when user presses back he will reach home activity instead of exiting the app.

In FlashCards:
Instead of finishing the activity whenever user presses next. I am just leaving it in the stack.

[opticod]

Thanks @tejavojjala.

[opticod]

@tejavojjala , I have merged to dev branch according to recent contribution policy. You can check your merged commit here : https://github.com/BuildmLearn/Toolkit-mobile-templates/commits/dev