ExpandablePager


Source link: https://github.com/Telenav/ExpandablePager

ExpandablePager

Layout that contains a ViewPager and can slide vertically between 2 states (expanded and collapsed).

#Requirements Android 4.0+ (Ice Cream Sandwich and later) #Setup ###Step 1 Add the following line to the dependencies section of your build.gradle file

compile 'com.telenav.expandablepager:expandablepager:0.2.1'

###Step 2 Extend desired adapter:

  • ExpandablePagerAdapter (don't forget to override instantiateItem)
public class MyAdapter extends ExpandablePagerAdapter<Book> {

 ...

@Override
  public Object instantiateItem(ViewGroup container, int position) {

final ViewGroup rootView = (ViewGroup) LayoutInflater.from(container.getContext()).inflate(R.layout.page, container, false);
 //inflate view

 ...

 return attach(container, rootView, position);
 //don't forget to return the result of attach()
  
}
 
}
  • ExpandableFragmentPagerAdapter
  • ExpandableFragmentStatePagerAdapter

###Step 3 Add ExpandablePager to a layout

<?xml version="1.0" encoding="utf-8"?> RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  android:layout_width="match_parent"
  android:layout_height="match_parent">

<com.telenav.expandablepager.ExpandablePager

android:id="@+id/container"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:layout_gravity="bottom"

android:layout_alignParentBottom="true" /> //pin the pager to the bootom of the screen using layout_gravity or layout_alignParentBottom </RelativeLayout>

###Step 4 Create and pass your adapter to the ExpandablePager

 MyAdapter adapter = new MyAdapter(myData);

  ExpandablePager pager = (ExpandablePager) findViewById(R.id.container);

  pager.setAdapter(adapter);

###Step 5 (optional)

  • Set collapsed height & animation duration via xml
 app:animation_duration="200"
  app:collapsed_height="@dimen/header_height"

or programmatically

 pager.setAnimationDuration(duration);

  pager.setCollapsedHeight((int) getResources().getDimension(R.dimen.header_height));
  • Set display mode (MODE_REGULAR or MODE_FIXED)
 pager.setMode(ExpandablePager.MODE_REGULAR);

#Extras Change pager state (supported states are STATE_COLLAPSED, STATE_EXPANDED, and STATE_HIDDEN)

 pager.setState(ExpandablePager.STATE_COLLAPSED)

Animate pager state change

 pager.animateToState(ExpandablePager.STATE_COLLAPSED)

Set current item

 pager.setCurrentItem(index, false);

Set listeners

 pager.setOnSliderStateChangeListener(new OnSliderStateChangeListener() {

 @Override

public void onStateChanged(View page, int index, int state) {

 ...

}

 @Override

public void onPageChanged(View page, int index, int state) {

 ...

}

  
}
);

 pager.setOnItemSelectedListener(new OnItemSelectedListener() {

@Override

public void onItemSelected(List<?> items, int index) {

 ...

}

  
}
);

#Sample For a more detailed example check the demoapp module.

#License Apache License, Version 2.0

Resources

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