我使用 FragmentStateAdapter
、ViewPager2
和 com.google.android.material.tabs.TabLayout
,并设置选项卡图标,我使用 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()
但是如何更改所选标签的图标?
我试过了,但是 mViewPager
是 ViewPager2
而不是 ViewPager
,代码无法编译。
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);
}
}
);
最佳答案
这个回调给了我所选标签的位置
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) {
}
});
或在 Kotlin 中
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) {
}
})
关于android - 如何使用 ViewPager2 更改 TabLayout 选定的选项卡图标,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/59401888/