Example usage for android.support.v4.view PagerAdapter registerDataSetObserver

Introduction

In this page you can find the example usage for android.support.v4.view PagerAdapter registerDataSetObserver.

Prototype

void registerDataSetObserver(DataSetObserver observer)

Source Link

Usage

From source file:chao.widget.tablayout.TabLayout.java

private void setPagerAdapter(@Nullable final PagerAdapter adapter, final boolean addObserver) {
    if (mPagerAdapter != null && mPagerAdapterObserver != null) {
        // If we already have a PagerAdapter, unregister our observer
        mPagerAdapter.unregisterDataSetObserver(mPagerAdapterObserver);
    }//from   w  w w  .j ava  2 s. c  o m

    mPagerAdapter = adapter;

    if (addObserver && adapter != null) {
        // Register our observer on the new adapter
        if (mPagerAdapterObserver == null) {
            mPagerAdapterObserver = new PagerAdapterObserver();
        }
        adapter.registerDataSetObserver(mPagerAdapterObserver);
    }

    // Finally make sure we reflect the new adapter
    populateFromPagerAdapter();
}

From source file:android.support.design.widget.RaeTabLayout.java

void setPagerAdapter(@Nullable final PagerAdapter adapter, final boolean addObserver) {
    if (mPagerAdapter != null && mPagerAdapterObserver != null) {
        // If we already have a PagerAdapter, unregister our observer
        mPagerAdapter.unregisterDataSetObserver(mPagerAdapterObserver);
    }/*from w ww . j  a  v a2s.c o m*/

    mPagerAdapter = adapter;

    if (addObserver && adapter != null) {
        // Register our observer on the new adapter
        if (mPagerAdapterObserver == null) {
            mPagerAdapterObserver = new PagerAdapterObserver();
        }
        adapter.registerDataSetObserver(mPagerAdapterObserver);
    }

    // Finally make sure we reflect the new adapter
    populateFromPagerAdapter();
}