An instance-state saving fragment switcher, intended for use with navigation drawers or tabs.

Related tags

Miscellaneous Fragment-Switcher
Overview

FragmentSwitcher

FragmentSwitcher is an adapter-based, state-saving fragment container similar to a ViewPager.

It was designed with the NavigationDrawer and Tab patterns in mind but can be used anywhere that you switch between fragments and would like to retain instance state.

  • Retains instance state of Fragments even when removing them from your activity.
  • Compatible with existing adapters: FragmentPagerAdapter and FragmentStatePagerAdapter
  • Adapter determines fragment retention policy. See the documentation for the two adapters above.
  • Includes two new adapters: FragmentArrayPagerAdapter and FragmentStateArrayPagerAdapter. You no longer have to subclass PagerAdapter to use FragmentSwitcher, just supply an array of fragments.

The sample app shows a demo of a navigation drawer with a lot fragments in a FragmentStateArrayPagerAdapter that can maintain the state of an edittext and listview. The sample also includes an example of saving a ListView's adapter content to InstanceState and restoring it later.

Version History

1.1.0 (9/22/14)

  • Added setOnPageChangeListener(FragmentSwitcher.OnPageChangeListener listener)
  • Added support for generic fragment types in the FragmentSwitcher

1.0.0 (9/13/14)

  • Initial release

Usage

mFragmentSwitcher = (FragmentSwitcher) findViewById(R.id.fragment_switcher)
mFragmentAdapter = new FragmentStateArrayPagerAdapter(getSupportFragmentManager());
mFragmentSwitcher.setAdapter(mFragmentAdapter);
List<Fragment> fragments = Arrays.asList(fragment1, fragment2, fragment3);
mFragmentAdapter.addAll(fragments);
mFragmentSwitcher.setCurrentItem(2);

Download

Grab FragmentSwitcher with Gradle:

compile 'com.timehop.fragmentswitcher:library:1.1.2'

License

Copyright 2014 Jacob Tabak

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
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Comments
  • Hashmaps

    Hashmaps

    Hi there, Love the library, use it frequently. Quick Q, what would I need to change make this functional with a HashMap<Integer, Fragment> as opposed to a collection (list/ Arraylist/ etc)? I already changed the code within the FragmentStateArrayPagerAdapter to mirror it, but I am unsure if I need to make changes also in just the FragmentSwitcher class or in multiple other ones too.

    opened by PGMacDesign 2
Owner
Jacob Tabak
Jacob Tabak
GitHub
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