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Code Issues Packages Projects Releases Wiki Activity

Migrate to ViewPager2 in SearchResultActivity.

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This commit is contained in:
Alex Ning 2020-09-23 00:26:05 +08:00
parent 58af3557e8
commit 31c32148bc
4 changed files with 91 additions and 108 deletions
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183
app/src/main/java/ml/docilealligator/infinityforreddit/Activity/SearchResultActivity.java
View File

@ -8,20 +8,22 @@ import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.widget.Toolbar;
import androidx.coordinatorlayout.widget.CoordinatorLayout;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentPagerAdapter;
import androidx.viewpager.widget.ViewPager;
import androidx.lifecycle.Lifecycle;
import androidx.viewpager2.adapter.FragmentStateAdapter;
import androidx.viewpager2.widget.ViewPager2;
import com.google.android.material.appbar.AppBarLayout;
import com.google.android.material.tabs.TabLayout;
import com.google.android.material.tabs.TabLayoutMediator;
import com.r0adkll.slidr.Slidr;
import com.r0adkll.slidr.model.SlidrInterface;
@ -72,7 +74,7 @@ public class SearchResultActivity extends BaseActivity implements SortTypeSelect
@BindView(R.id.tab_layout_search_result_activity)
TabLayout tabLayout;
@BindView(R.id.view_pager_search_result_activity)
ViewPager viewPager;
ViewPager2 viewPager2;
@Inject
RedditDataRoomDatabase mRedditDataRoomDatabase;
@Inject
@ -91,6 +93,7 @@ public class SearchResultActivity extends BaseActivity implements SortTypeSelect
private String mAccountName;
private String mQuery;
private String mSubredditName;
private FragmentManager fragmentManager;
private SectionsPagerAdapter sectionsPagerAdapter;
private SearchPostSortTypeBottomSheetFragment searchPostSortTypeBottomSheetFragment;
private SortTimeBottomSheetFragment sortTimeBottomSheetFragment;
@ -139,6 +142,8 @@ public class SearchResultActivity extends BaseActivity implements SortTypeSelect
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
setToolbarGoToTop(toolbar);
fragmentManager = getSupportFragmentManager();
if (savedInstanceState == null) {
getCurrentAccountAndInitializeViewPager();
} else {
@ -212,10 +217,11 @@ public class SearchResultActivity extends BaseActivity implements SortTypeSelect
}
private void initializeViewPager() {
sectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(sectionsPagerAdapter);
viewPager.setOffscreenPageLimit(2);
viewPager.addOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
sectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager(), getLifecycle());
viewPager2.setAdapter(sectionsPagerAdapter);
viewPager2.setOffscreenPageLimit(3);
viewPager2.setUserInputEnabled(!mSharedPreferences.getBoolean(SharedPreferencesUtils.DISABLE_SWIPING_BETWEEN_TABS, false));
viewPager2.registerOnPageChangeCallback(new ViewPager2.OnPageChangeCallback() {
@Override
public void onPageSelected(int position) {
sectionsPagerAdapter.displaySortTypeInToolbar();
@ -226,7 +232,19 @@ public class SearchResultActivity extends BaseActivity implements SortTypeSelect
}
}
});
tabLayout.setupWithViewPager(viewPager);
new TabLayoutMediator(tabLayout, viewPager2, (tab, position) -> {
switch (position) {
case 0:
tab.setText("Posts");
break;
case 1:
tab.setText("Comments");
break;
case 2:
tab.setText("Users");
break;
}
}).attach();
}
@Override
@ -243,7 +261,7 @@ public class SearchResultActivity extends BaseActivity implements SortTypeSelect
onBackPressed();
return true;
case R.id.action_sort_search_result_activity:
switch (viewPager.getCurrentItem()) {
switch (viewPager2.getCurrentItem()) {
case 0: {
searchPostSortTypeBottomSheetFragment.show(getSupportFragmentManager(), searchPostSortTypeBottomSheetFragment.getTag());
break;
@ -251,7 +269,7 @@ public class SearchResultActivity extends BaseActivity implements SortTypeSelect
case 1:
case 2:
Bundle bundle = new Bundle();
bundle.putInt(SearchUserAndSubredditSortTypeBottomSheetFragment.EXTRA_FRAGMENT_POSITION, viewPager.getCurrentItem());
bundle.putInt(SearchUserAndSubredditSortTypeBottomSheetFragment.EXTRA_FRAGMENT_POSITION, viewPager2.getCurrentItem());
searchUserAndSubredditSortTypeBottomSheetFragment.setArguments(bundle);
searchUserAndSubredditSortTypeBottomSheetFragment.show(getSupportFragmentManager(), searchUserAndSubredditSortTypeBottomSheetFragment.getTag());
break;
@ -337,19 +355,15 @@ public class SearchResultActivity extends BaseActivity implements SortTypeSelect
}
}
private class SectionsPagerAdapter extends FragmentPagerAdapter {
private class SectionsPagerAdapter extends FragmentStateAdapter {
private PostFragment postFragment;
private SubredditListingFragment subredditListingFragment;
private UserListingFragment userListingFragment;
public SectionsPagerAdapter(FragmentManager fm) {
super(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT);
public SectionsPagerAdapter(FragmentManager fm, Lifecycle lifecycle) {
super(fm, lifecycle);
}
@NonNull
@Override
public Fragment getItem(int position) {
public Fragment createFragment(int position) {
switch (position) {
case 0: {
PostFragment mFragment = new PostFragment();
@ -384,123 +398,92 @@ public class SearchResultActivity extends BaseActivity implements SortTypeSelect
}
}
@Override
public int getCount() {
return 3;
}
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "Posts";
case 1:
return "Subreddits";
case 2:
return "Users";
}
@Nullable
private Fragment getCurrentFragment() {
if (viewPager2 == null || fragmentManager == null) {
return null;
}
@NonNull
@Override
public Object instantiateItem(@NonNull ViewGroup container, int position) {
Fragment fragment = (Fragment) super.instantiateItem(container, position);
switch (position) {
case 0:
postFragment = (PostFragment) fragment;
break;
case 1:
subredditListingFragment = (SubredditListingFragment) fragment;
break;
case 2:
userListingFragment = (UserListingFragment) fragment;
break;
}
displaySortTypeInToolbar();
return fragment;
return fragmentManager.findFragmentByTag("f" + viewPager2.getCurrentItem());
}
public boolean handleKeyDown(int keyCode) {
return viewPager.getCurrentItem() == 0 && postFragment.handleKeyDown(keyCode);
if (viewPager2.getCurrentItem() == 0) {
Fragment fragment = getCurrentFragment();
if (fragment instanceof PostFragment) {
return ((PostFragment) fragment).handleKeyDown(keyCode);
}
}
return false;
}
void changeSortType(SortType sortType) {
postFragment.changeSortType(sortType);
Fragment fragment = getCurrentFragment();
if (fragment instanceof PostFragment) {
((PostFragment) fragment).changeSortType(sortType);
displaySortTypeInToolbar();
}
}
void changeSortType(SortType sortType, int fragmentPosition) {
switch (fragmentPosition) {
case 1:
mSortTypeSharedPreferences.edit().putString(SharedPreferencesUtils.SORT_TYPE_SEARCH_SUBREDDIT, sortType.getType().name()).apply();
subredditListingFragment.changeSortType(sortType);
break;
case 2:
mSortTypeSharedPreferences.edit().putString(SharedPreferencesUtils.SORT_TYPE_SEARCH_USER, sortType.getType().name()).apply();
userListingFragment.changeSortType(sortType);
Fragment fragment = fragmentManager.findFragmentByTag("f" + fragmentPosition);
if (fragment instanceof SubredditListingFragment) {
((SubredditListingFragment) fragment).changeSortType(sortType);
} else if (fragment instanceof UserListingFragment) {
((UserListingFragment) fragment).changeSortType(sortType);
}
displaySortTypeInToolbar();
}
public void refresh() {
switch (viewPager.getCurrentItem()) {
case 0:
((FragmentCommunicator) postFragment).refresh();
break;
case 1:
((FragmentCommunicator) subredditListingFragment).refresh();
break;
case 2:
((FragmentCommunicator) userListingFragment).refresh();
break;
Fragment fragment = getCurrentFragment();
if (fragment instanceof FragmentCommunicator) {
((FragmentCommunicator) fragment).refresh();
}
}
void changeNSFW(boolean nsfw) {
if (postFragment != null) {
postFragment.changeNSFW(nsfw);
Fragment fragment = getCurrentFragment();
if (fragment instanceof PostFragment) {
((PostFragment) fragment).changeNSFW(nsfw);
}
}
void changePostLayout(int postLayout) {
if (postFragment != null) {
mPostLayoutSharedPreferences.edit().putInt(SharedPreferencesUtils.POST_LAYOUT_SEARCH_POST, postLayout).apply();
((FragmentCommunicator) postFragment).changePostLayout(postLayout);
Fragment fragment = getCurrentFragment();
if (fragment instanceof PostFragment) {
((PostFragment) fragment).changePostLayout(postLayout);
}
}
void goBackToTop() {
if (viewPager.getCurrentItem() == 0) {
postFragment.goBackToTop();
} else if (viewPager.getCurrentItem() == 1) {
subredditListingFragment.goBackToTop();
} else {
userListingFragment.goBackToTop();
Fragment fragment = getCurrentFragment();
if (fragment instanceof PostFragment) {
((PostFragment) fragment).goBackToTop();
} else if (fragment instanceof SubredditListingFragment) {
((SubredditListingFragment) fragment).goBackToTop();
} else if (fragment instanceof UserListingFragment) {
((UserListingFragment) fragment).goBackToTop();
}
}
void displaySortTypeInToolbar() {
switch (viewPager.getCurrentItem()) {
case 0:
if (postFragment != null) {
SortType sortType = postFragment.getSortType();
Fragment fragment = getCurrentFragment();
if (fragment instanceof PostFragment) {
SortType sortType = ((PostFragment) fragment).getSortType();
Utils.displaySortTypeInToolbar(sortType, toolbar);
} else if (fragment instanceof SubredditListingFragment) {
SortType sortType = ((SubredditListingFragment) fragment).getSortType();
Utils.displaySortTypeInToolbar(sortType, toolbar);
} else if (fragment instanceof UserListingFragment) {
SortType sortType = ((UserListingFragment) fragment).getSortType();
Utils.displaySortTypeInToolbar(sortType, toolbar);
}
break;
case 1:
if (subredditListingFragment != null) {
SortType sortType = subredditListingFragment.getSortType();
Utils.displaySortTypeInToolbar(sortType, toolbar);
}
break;
case 2:
if (userListingFragment != null) {
SortType sortType = userListingFragment.getSortType();
Utils.displaySortTypeInToolbar(sortType, toolbar);
}
break;
}
@Override
public int getItemCount() {
return 3;
}
}

1
app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/SubredditListingFragment.java
View File

@ -205,6 +205,7 @@ public class SubredditListingFragment extends Fragment implements FragmentCommun
}
public void changeSortType(SortType sortType) {
mSortTypeSharedPreferences.edit().putString(SharedPreferencesUtils.SORT_TYPE_SEARCH_SUBREDDIT, sortType.getType().name()).apply();
mSubredditListingViewModel.changeSortType(sortType);
this.sortType = sortType;
}

1
app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/UserListingFragment.java
View File

@ -185,6 +185,7 @@ public class UserListingFragment extends Fragment implements FragmentCommunicato
}
public void changeSortType(SortType sortType) {
mSortTypeSharedPreferences.edit().putString(SharedPreferencesUtils.SORT_TYPE_SEARCH_USER, sortType.getType().name()).apply();
mUserListingViewModel.changeSortType(sortType);
this.sortType = sortType;
}

6
app/src/main/res/layout/activity_search_result.xml
View File

@ -1,7 +1,6 @@
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/coordinator_layout_search_result_activity">
@ -42,11 +41,10 @@
</com.google.android.material.appbar.AppBarLayout>
<androidx.viewpager.widget.ViewPager
<androidx.viewpager2.widget.ViewPager2
android:id="@+id/view_pager_search_result_activity"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:application=".SearchResultActivity" />
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>