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Recalculate view's height when tab is selected

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Viewpager2 created view based on the first tab height, when tab is
selected, viewpager2 should recalculate height.

But this solution may not suitable for App list, so we only enable
for Location Settings which have different items in personal & work
profile.

Bug: 224521665
Test: manual
Change-Id: Ib19b30cb82b8b4f13f651795906289da53ded4ed
This commit is contained in:
Edgar Wang
2022-04-21 11:44:10 +08:00
parent 27aa5f9d94
commit f3270e5c1c
8 changed files with 61 additions and 74 deletions
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47
src/com/android/settings/dashboard/profileselector/ProfileSelectFragment.java
View File

@@ -99,6 +99,8 @@ public abstract class ProfileSelectFragment extends DashboardFragment {
private ViewGroup mContentView;
private ViewPager2 mViewPager;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
@@ -111,12 +113,21 @@ public abstract class ProfileSelectFragment extends DashboardFragment {
final int selectedTab = getTabId(activity, getArguments());
final View tabContainer = mContentView.findViewById(R.id.tab_container);
final ViewPager2 viewPager = tabContainer.findViewById(R.id.view_pager);
viewPager.setAdapter(new ProfileSelectFragment.ViewPagerAdapter(this));
mViewPager = tabContainer.findViewById(R.id.view_pager);
mViewPager.setAdapter(new ProfileSelectFragment.ViewPagerAdapter(this));
final TabLayout tabs = tabContainer.findViewById(R.id.tabs);
new TabLayoutMediator(tabs, viewPager,
new TabLayoutMediator(tabs, mViewPager,
(tab, position) -> tab.setText(getPageTitle(position))
).attach();
mViewPager.registerOnPageChangeCallback(
new ViewPager2.OnPageChangeCallback() {
@Override
public void onPageSelected(int position) {
super.onPageSelected(position);
updateHeight(position);
}
}
);
tabContainer.setVisibility(View.VISIBLE);
final TabLayout.Tab tab = tabs.getTabAt(selectedTab);
tab.select();
@@ -133,6 +144,36 @@ public abstract class ProfileSelectFragment extends DashboardFragment {
return mContentView;
}
protected boolean forceUpdateHeight() {
return false;
}
private void updateHeight(int position) {
if (!forceUpdateHeight()) {
return;
}
ViewPagerAdapter adapter = (ViewPagerAdapter) mViewPager.getAdapter();
if (adapter == null || adapter.getItemCount() <= position) {
return;
}
Fragment fragment = adapter.createFragment(position);
View newPage = fragment.getView();
if (newPage != null) {
int viewWidth = View.MeasureSpec.makeMeasureSpec(newPage.getWidth(),
View.MeasureSpec.EXACTLY);
int viewHeight = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
newPage.measure(viewWidth, viewHeight);
int currentHeight = mViewPager.getLayoutParams().height;
int newHeight = newPage.getMeasuredHeight();
if (newHeight != 0 && currentHeight != newHeight) {
ViewGroup.LayoutParams layoutParams = mViewPager.getLayoutParams();
layoutParams.height = newHeight;
mViewPager.setLayoutParams(layoutParams);
}
}
}
@Override
public int getMetricsCategory() {
return METRICS_CATEGORY_UNKNOWN;

5
src/com/android/settings/dashboard/profileselector/ProfileSelectLocationServicesFragment.java
View File

@@ -50,4 +50,9 @@ public class ProfileSelectLocationServicesFragment extends ProfileSelectFragment
protected int getPreferenceScreenResId() {
return R.xml.location_services_header;
}
@Override
protected boolean forceUpdateHeight() {
return true;
}
}