I use FragmentStateAdapter
, ViewPager2
, and com.google.android.material.tabs.TabLayout
, and to set tab icon, I use com.google.android.material.tabs.TabLayoutMediator
TabLayoutMediator(
mTabActivity.tabLayout,
mTabActivity.viewPager,
TabLayoutMediator.TabConfigurationStrategy { tab, position ->
when (mTabEnums[position]) {
TabType.TAB_CONTACT -> tab.setIcon(R.drawable.ic_tab_contact)
TabType.TAB_GROUPS -> tab.setIcon(R.drawable.ic_tab_groups)
TabType.TAB_MESSAGES -> tab.setIcon(R.drawable.ic_tab_message)
TabType.TAB_MAPS -> tab.setIcon(R.drawable.ic_tab_map)
TabType.TAB_RECENTS -> tab.setIcon(R.drawable.ic_tab_recent)
TabType.TAB_INCALL_LIST -> tab.setIcon(R.drawable.ic_tab_contact)
TabType.TAB_INCALL_MAPS -> tab.setIcon(R.drawable.ic_tab_map)
}
}
).attach()
But how can I change icon of a selected tab?
I tried this, but mViewPager
is a ViewPager2
not a ViewPager
, and code does not compile.
mTabLayout.addOnTabSelectedListener(
new TabLayout.ViewPagerOnTabSelectedListener(mViewPager) {
@Override
public void onTabSelected(TabLayout.Tab tab) {
super.onTabSelected(tab);
int tabIconColor = ContextCompat.getColor(
ActivityTab.this, R.color.colorPrimary);
tab.getIcon().setColorFilter(tabIconColor, PorterDuff.Mode.SRC_IN);
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
super.onTabUnselected(tab);
int tabIconColor = ContextCompat.getColor(
ActivityTab.this, R.color.colorAccent);
tab.getIcon().setColorFilter(tabIconColor, PorterDuff.Mode.SRC_IN);
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
super.onTabReselected(tab);
}
}
);
This call back gives me the position of the selected tab
mTabLayout.setOnTabSelectedListener(new TabLayout.BaseOnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
Log.d(TAG,"selection "+tab.getPosition());
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
or in Kotlin
mTabActivity.tabLayout.addOnTabSelectedListener(object :
TabLayout.OnTabSelectedListener {
override fun onTabSelected(tab: TabLayout.Tab) {
when (mTabEnums[tab.position])
{
TabType.TAB_CONTACT -> tab.icon =
ContextCompat.getDrawable(mTabActivity,R.drawable.ic_tab_contact_green)
}
}
override fun onTabUnselected(tab: TabLayout.Tab) {
when (mTabEnums[tab.position])
{
TabType.TAB_CONTACT -> tab.icon =
ContextCompat.getDrawable(mTabActivity,R.drawable.ic_tab_contact)
}
}
override fun onTabReselected(tab: TabLayout.Tab) {
}
})
You can add app:tabIconColorTint
in your Layout-XML:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:color="?attr/colorOnSurface" android:state_selected="true" />
<item android:alpha="0.60" android:color="?attr/colorOnSurface" />
</selector>
TabLayout.setOnTabSelectedListener() and TabLayout.BaseOnTabSelectedListener is deprecated. Use this instead.
tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(@NonNull TabLayout.Tab tab) {
// change icon here
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
}
});
Also if you just want to change the tab icon tint. Consider using this instead of setting a color filter:
final int color = ContextCompat.getColor(context, R.color.myColor);
DrawableCompat.setTint(tab.getIcon(), color);
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