android tab 选中变色,如何在android中显示tablayout背景颜色(单击选项卡时每个选项卡的颜色都应该不同)...

tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {

@Override

public void onTabSelected(TabLayout.Tab tab) {

if (tab.getPosition() == 0) {

tabLayout.setSelectedTabIndicatorColor(Color.parseColor("#FFFFFF")); // setting colour but its not working

recyclerView.setBackgroundResource(R.drawable.bghomeback);

titleText.setVisibility(View.GONE);

titleText1.setVisibility(View.VISIBLE);

ContentfulAdapter.getInstance().filter("");

mSearchView.setVisibility(View.GONE);

mSearchImage.setVisibility(View.GONE);

mSearchText.setVisibility(View.GONE);

mFavText.setVisibility(View.INVISIBLE);

swipeRefresh.setOnRefreshListener(storyFragment::requestSync);

swipeRefresh.setEnabled(true);

} else if (tab.getPosition() == 1) {

titleText.setVisibility(View.VISIBLE);

titleText1.setVisibility(View.GONE);

// mRelative.setBackgroundResource(Color.parseColor("#000000"));

tabLayout.setSelectedTabIndicatorColor(Color.parseColor("#FFFFFF"));

recyclerView.setBackgroundResource(R.drawable.seraback);

ContentfulAdapter.getInstance().filter("");

mSearchView.setVisibility(View.VISIBLE);

mFavText.setVisibility(View.GONE);

mSearchView.setQuery("", false);

swipeRefresh.setRefreshing(false);

swipeRefresh.setEnabled(false);

} else if (tab.getPosition() == 2){

recyclerView.setBackgroundResource(R.drawable.favback);

tabLayout.setSelectedTabIndicatorColor(R.drawable.taitemselect1);

titleText.setVisibility(View.VISIBLE);

titleText1.setVisibility(View.GONE);

// mSearchImage.setVisibility(View.GONE);

mSearchText.setVisibility(View.GONE);

mSearchView.setVisibility(View.GONE);

// ContentfulAdapter.getInstance().filter("");

// swipeRefresh.setOnRefreshListener(storyFragment::requestSync);

mFavText.setVisibility(View.VISIBLE);

mFavText.setText("The books you mark as favourite will appear in this page.\n No favourite book added.");

ContentfulAdapter.getInstance().showFavoriteItem();

if (ContentfulAdapter.getInstance().getItemCount() < 1) {

mFavText.setVisibility(View.VISIBLE);

mFavText.setText("The books you mark as favourite will appear in this page.\n No favourite book added.");

} else {

mFavText.setVisibility(View.INVISIBLE);

}

swipeRefresh.setRefreshing(false);

swipeRefresh.setEnabled(false);

}