java - Why does my SlidingTabLayout Restart my activity? -
i have 4 tabs, shown below when click tags home restarts home activity. why that??
also, slidingtablayout little choppy, have home activity restart?
public class sectionspageradapter extends fragmentstatepageradapter { public sectionspageradapter(fragmentmanager fm) { super(fm); } @override public fragment getitem(int position) { //2 steps creating fragment, create fragment class , create ui fragment fragment = null; //we dont want return our place holder fragment instead want switch bewtween 3 //create switch case based on position applied or fragment selected switch (position) { case home: fragment = dashboard.newinstance("",""); break; case tags: fragment = tags.newinstance("",""); break; case my_recent: fragment = myposts.newinstance("",""); break; case top; fragment = top.newinstance("", ""); break; } return fragment; } @override public int getcount() { // show 3 total pages. return 4; } @override public charsequence getpagetitle(int position) { switch (position) { case 0: return "home"; case 1: return "top"; case 2: return "recent"; case 3: return "tags"; } return null; } } }
this because creating new instance of each fragment each time user changes tab. think should extend fragmentpageradapter instead of fragmentstatepageradapter.
if create fragments in sectionspageradapter constructor, keep reference them member variables , return reference fragments in getitem() method should stop recreating fragments.
maybe try this:
public class sectionspageradapter extends fragmentpageradapter { fragment mdashboardfragment; fragment mtagsfragment; fragment mmyrecentfragment; fragment mtopfragment; public sectionspageradapter(fragmentmanager fm) { super(fm); mhomefragment = dashboard.newinstance("",""); mtagsfragment = tags.newinstance("",""); mmyrecentfragment= myposts.newinstance("",""); mtopfragment = top.newinstance("", ""); } @override public fragment getitem(int position) { fragment fragment = null; //create switch case based on position applied or fragment selected switch (position) { case home: fragment = mdashboardfragment; break; case tags: fragment = mtagsfragment; break; case my_recent: fragment = mmyrecentfragment; break; case top; fragment = mtopfragment; break; } return fragment; } @override public int getcount() { // show 3 total pages. return 4; } @override public charsequence getpagetitle(int position) { switch (position) { case 0: return "home"; case 1: return "top"; case 2: return "recent"; case 3: return "tags"; } return null; }}} bear in mind quite inefficient potentially creating fragments unnecessarily.
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