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java - RecyclerView 能否与其余 fragment 布局一起滚动?

转载 作者:行者123 更新时间:2023-12-04 14:55:06 29 4
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我在 TvShowEpisodeDetails Activity 中使用 ViewPager 设置了一个 RecyclerView 适配器,它运行良好,但有一个问题,布局在 Fragment(TvShowEpisodeDetailsFragment) 中上下滚动时,RecyclerView 的大小是固定的。但我希望它与他们一起滚动。

RecyclerViewViewPager 都在viewpager_with_toolbar_overlay.xml Layout 中设置,并且都在Activity 中设置。

TvShowEpisodeDetailsFragment 是属于 Activity 类 TvShowEpisodeDetails 的 fragment 类,该 fragment 创建的剧集与电视节目季节所能提供的一样多。

enter image description here

当然,如果我在 fragment 中设置 RecyclerView 适配器,这个问题就会消失,但我会遇到不可修复的突出显示和滚动问题,这就是我将它设置在 Activity 中的原因,因为它确实不给出那些问题。

我需要让它在 Activity 中以某种方式工作。

我的目标是 RecyclerViewViewPager 必须在相同的布局 XML 文件中,并且它们都必须在 Activity 或 fragment 类

是否可以使 RecyclerView 与其余 fragment 布局一起滚动?

是否可以通过编程方式实现?

这是 Activity

public class TvShowEpisodeDetails extends MizActivity{


@Override
protected int getLayoutResource() {
return R.layout.viewpager_with_toolbar_overlay;
}


@Override
public void onCreate(Bundle savedInstanceState) {
mBus = MizuuApplication.getBus();
super.onCreate(savedInstanceState);

// Set theme
setTheme(R.style.Mizuu_Theme_NoBackground);




// setting episodeslist
final ArrayList<PlanetModel> episodeslist = new ArrayList<>();
for(TvShowEpisode e : mEpisodes){
episodeslist.add(new PlanetModel(e.mEpisode));
}


// setting RecyclerView
mEpisodesList = (RecyclerView) findViewById(R.id.episodesLIST);


// Setting LinearLayoutManager
LinearLayoutManager layoutManager
= new LinearLayoutManager(this.getApplicationContext(), LinearLayoutManager.HORIZONTAL, false);
//mEpisodesList.setLayoutManager(new LinearLayoutManager(mContext));
mEpisodesList.setLayoutManager(layoutManager);


// Setting RecyclerView Adapter
PlanetAdapter.OnItemClickListener indicatorCallback = new PlanetAdapter.OnItemClickListener() {
@Override
public void onItemClick(String item) {
SharedPreferences getPref = getContext().getSharedPreferences("PlanetAdapter", Context.MODE_PRIVATE);
int pos = getPref.getInt("newPosition", 0);
mViewPager.setCurrentItem(pos,false);
}
};
final PlanetAdapter planetAdapter = new PlanetAdapter(episodeslist,indicatorCallback);
mEpisodesList.setAdapter(planetAdapter);


// Setting ViewPager
mViewPager = (ViewPager) findViewById(R.id.awesomepager);
mViewPager.setAdapter(new TvShowEpisodeDetailsAdapter(getSupportFragmentManager()));
mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
@Override
public void onPageSelected(int position) {
planetAdapter.setSelectedIndex(position);
planetAdapter.notifyDataSetChanged();
mEpisodesList.smoothScrollToPosition(position);
//mEpisodesList.scrollToPosition(position);
for (int i=0; i<episodeslist.size(); i++)
{
episodeslist.get(i).setPlanetSelected(false);
}
episodeslist.get(position).setPlanetSelected(true);
ViewUtils.updateToolbarBackground(TvShowEpisodeDetails.this, mToolbar, 0, mEpisodes.get(position).getTitle(), Color.TRANSPARENT);
}
});

if (savedInstanceState != null) {
mViewPager.setCurrentItem(savedInstanceState.getInt("tab", 0));
} else {
for (int i = 0; i < mEpisodes.size(); i++) {
if (mEpisodes.get(i).getSeason().equals(MizLib.addIndexZero(mSeason)) && mEpisodes.get(i).getEpisode().equals(MizLib.addIndexZero(mEpisode))) {
mViewPager.setCurrentItem(i);
break;
}
}
}
}
}

viewpager_with_toolbar_overlay

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<android.support.v4.view.ViewPager
android:id="@+id/awesomepager"
android:layout_width="match_parent"
android:layout_height="match_parent" />

<ProgressBar
android:id="@+id/progressbar"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:visibility="gone" />

<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:background="#068006"
android:layout_marginTop="450dp"
>

<android.support.v7.widget.RecyclerView
android:id="@+id/episodesLIST"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:scrollbars="horizontal" />
</LinearLayout>

<include layout="@layout/toolbar_layout" />

</FrameLayout>

这是在 fragment 类的 onCreateView 中膨胀的 fragment 的 XML 布局

episode_details.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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:background="@color/abc_input_method_navigation_guard">

<com.miz.views.ObservableScrollView
android:id="@+id/observableScrollView"
android:layout_width="match_parent"
android:layout_height="match_parent">

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">

<RelativeLayout
android:id="@+id/relativeLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content">

<ImageView
android:id="@+id/episodePhoto"
android:layout_width="match_parent"
android:layout_height="@dimen/backdrop_portrait_height"
android:scaleType="centerCrop"
android:src="@drawable/bg" />

<com.melnykov.fab.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/episodePhoto"
android:layout_alignParentEnd="false"
android:layout_alignParentRight="true"
android:layout_marginTop="@dimen/content_details_fab_negative_margin"
android:layout_marginRight="@dimen/content_details_baseline_margin"
android:src="@drawable/ic_play_arrow_white_36dp"
app:fab_colorNormal="#666"
app:fab_type="mini" />

<LinearLayout
android:id="@+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/fab"
android:layout_marginLeft="@dimen/content_details_baseline_margin"
android:layout_marginTop="@dimen/content_details_title_margin_top"
android:layout_marginRight="@dimen/content_details_baseline_margin"
android:layout_toLeftOf="@+id/fab"
android:orientation="vertical">

<TextView
android:id="@+id/movieTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="3"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#FFFFFF"
android:textSize="@dimen/content_details_title" />

<TextView
android:id="@+id/textView7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/content_details_very_small_margin"
android:layout_marginBottom="@dimen/content_details_baseline_margin"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#FFFFFF"
android:textSize="@dimen/content_details_subheader"
android:textStyle="bold|italic" />
</LinearLayout>

</RelativeLayout>

<LinearLayout
android:id="@+id/details_area"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#666"
android:baselineAligned="false"
android:elevation="1dp"
android:minHeight="@dimen/content_details_large_margin"
android:orientation="horizontal"
android:paddingLeft="@dimen/content_details_baseline_margin"
android:paddingTop="@dimen/content_details_small_margin"
android:paddingRight="@dimen/content_details_baseline_margin"
android:paddingBottom="@dimen/content_details_small_margin">

<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center_horizontal"
android:orientation="vertical">

<TextView
android:id="@+id/TextView03"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:gravity="center_horizontal"
android:lines="1"
android:maxLines="1"
android:text="@string/detailsAirDate"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="@dimen/content_details_area_subheader" />

<TextView
android:id="@+id/textReleaseDate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#FFFFFF"
android:textSize="@dimen/content_details_area_header"
android:textStyle="bold" />
</LinearLayout>

<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center_horizontal"
android:orientation="vertical">

<TextView
android:id="@+id/textView61"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:gravity="center_horizontal"
android:lines="1"
android:maxLines="1"
android:text="@string/detailsRating"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="@dimen/content_details_area_subheader" />

<TextView
android:id="@+id/textView12"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#FFFFFF"
android:textSize="@dimen/content_details_area_header"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>



<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="@dimen/content_details_baseline_margin">

<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="@dimen/content_details_baseline_margin"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#FFFFFF"
android:textSize="@dimen/content_details_body_text" />

<TextView
android:id="@+id/director"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="12dp"
android:drawableLeft="@drawable/ic_movie_white_24dp"
android:drawablePadding="@dimen/movie_details_padding"
android:focusable="false"
android:gravity="center_vertical"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#f0f0f0"
android:textSize="@dimen/content_details_body_text" />

<TextView
android:id="@+id/writer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="12dp"
android:drawableLeft="@drawable/ic_edit_white_24dp"
android:drawablePadding="@dimen/movie_details_padding"
android:focusable="false"
android:gravity="center_vertical"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#f0f0f0"
android:textSize="@dimen/content_details_body_text" />

<TextView
android:id="@+id/guest_stars"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="12dp"
android:drawableLeft="@drawable/ic_people_white_24dp"
android:drawablePadding="@dimen/movie_details_padding"
android:focusable="false"
android:gravity="center_vertical"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#f0f0f0"
android:textSize="@dimen/content_details_body_text" />

<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawableLeft="@drawable/ic_folder_open_white_24dp"
android:drawablePadding="@dimen/movie_details_padding"
android:gravity="center_vertical"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#FFFFFF"
android:textSize="@dimen/content_details_body_text" />
</LinearLayout>

</LinearLayout>

</com.miz.views.ObservableScrollView>

<FrameLayout
android:id="@+id/progress_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/bg"
android:visibility="gone">

<ProgressBar
android:id="@+id/progressBar1"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center" />
</FrameLayout>

</FrameLayout>

更新

fragment

@SuppressLint("InflateParams") public class TvShowEpisodeDetailsFragment extends Fragment {




public TvShowEpisodeDetailsFragment() {}

public static TvShowEpisodeDetailsFragment newInstance(String showId, int season, int episode) {
TvShowEpisodeDetailsFragment pageFragment = new TvShowEpisodeDetailsFragment();
Bundle bundle = new Bundle();
bundle.putString("showId", showId);
bundle.putInt("season", season);
bundle.putInt("episode", episode);
pageFragment.setArguments(bundle);
return pageFragment;
}

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

setRetainInstance(true);
setHasOptionsMenu(true);

mContext = getActivity();

mBus = MizuuApplication.getBus();

mShowFileLocation = PreferenceManager.getDefaultSharedPreferences(getActivity()).getBoolean(SHOW_FILE_LOCATION, true);

mPicasso = MizuuApplication.getPicassoDetailsView(getActivity());

mMediumItalic = TypefaceUtils.getRobotoMediumItalic(mContext);
mMedium = TypefaceUtils.getRobotoMedium(mContext);
mCondensedRegular = TypefaceUtils.getRobotoCondensedRegular(mContext);

mDatabaseHelper = MizuuApplication.getTvEpisodeDbAdapter();

LocalBroadcastManager.getInstance(mContext).registerReceiver(mBroadcastReceiver,
new IntentFilter(LocalBroadcastUtils.UPDATE_TV_SHOW_EPISODE_DETAILS_OVERVIEW));

loadEpisode();
}

@Override
public void onDestroy() {
super.onDestroy();

LocalBroadcastManager.getInstance(mContext).unregisterReceiver(mBroadcastReceiver);
}

private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
loadEpisode();
loadData();
}
};

private void loadEpisode() {
if (!getArguments().getString("showId").isEmpty() && getArguments().getInt("season") >= 0 && getArguments().getInt("episode") >= 0) {
Cursor cursor = mDatabaseHelper.getEpisode(getArguments().getString("showId"), getArguments().getInt("season"), getArguments().getInt("episode"));

if (cursor.moveToFirst()) {
mEpisode = new TvShowEpisode(getActivity(),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_SHOW_ID)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_TITLE)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_PLOT)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_SEASON)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_AIRDATE)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_DIRECTOR)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_WRITER)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_GUESTSTARS)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE_RATING)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_HAS_WATCHED)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_FAVOURITE))
);

mEpisode.setFilepaths(MizuuApplication.getTvShowEpisodeMappingsDbAdapter().getFilepathsForEpisode(
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_SHOW_ID)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_SEASON)),
cursor.getString(cursor.getColumnIndex(DbAdapterTvShowEpisodes.KEY_EPISODE))
));
}
cursor.close();
}
}


@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.episode_details, container, false);
}


@Override
public void onViewCreated(final View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);

mBackdrop = (ImageView) view.findViewById(R.id.imageBackground);
mEpisodePhoto = (ImageView) view.findViewById(R.id.episodePhoto);
mDetailsArea = view.findViewById(R.id.details_area);

mTitle = (TextView) view.findViewById(R.id.movieTitle);
mSeasonEpisodeNumber = (TextView) view.findViewById(R.id.textView7);
mDescription = (TextView) view.findViewById(R.id.textView2);
mFileSource = (TextView) view.findViewById(R.id.textView3);
mAirDate = (TextView) view.findViewById(R.id.textReleaseDate);
mRating = (TextView) view.findViewById(R.id.textView12);
mDirector = (TextView) view.findViewById(R.id.director);
mWriter = (TextView) view.findViewById(R.id.writer);
mGuestStars = (TextView) view.findViewById(R.id.guest_stars);
mScrollView = (ObservableScrollView) view.findViewById(R.id.observableScrollView);
mFab = (FloatingActionButton) view.findViewById(R.id.fab);

mFab.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
ViewUtils.animateFabJump(v, new SimpleAnimatorListener() {
@Override
public void onAnimationEnd(Animator animation) {
play();
}
});
}
});

...

}

...

}

最佳答案

I have set up a RecyclerView adapter with ViewPager in an activity namely TvShowEpisodeDetails , it works well but there is one issue, the Layout of RecyclerView is fixed while scrolling up and down in the Fragment(TvShowEpisodeDetailsFragment). But I want it to scroll with them.

很难使用 RecyclerViewViewPager之外页面 fragment ;因为当您在页面 fragment 和独立(即 Activity )之间向上/向下滚动页面(或者当您滑动到下一页/上一页)时,您无法同步和链接触摸/ Action 事件 RecyclerView .即使这样也不会一帆风顺。

因此,RecyclerView应该是 ViewPager 的一部分页面。

And off course this issue will be gone if I set RecyclerView adapter inside fragment, but I will get unfixable highlighting and scrolling issues

那么,现在是添加 RecyclerView 的问题了在ViewPager fragment 是 RecyclerView 的突出问题当您点击任何项目或当您将 ViewPager 滑动到右/左页面时。

但是,主要问题是有一个 RecyclerView每个页面的实例,即如果您有 5 个页面,那么您有 5 个 RecyclerView。

因此,仅在 RecyclerView 内跟踪突出显示是一件很麻烦的事情适配器类。因此用 OnClickListeners 操纵它只有链接这些的问题 RecyclerView和适配器实例一起更新它们的突出显示项。

因此,更简单的方法是将参数传递给 RecyclerView带有所选项目的适配器(绝对等于当前 ViewPager 页面位置)。

然后检查 onBindViewHolder()如果position等于传入的值,然后突出显示该项目;否则保留原始颜色的项目。

因此,将其包装到操作中:

  • 更改适配器构造函数以接受 highlighted_position 参数
public PlanetAdapter(ArrayList<PlanetModel> episodeslist, 
int highlightedPosition, OnItemClickListener listener)
  • 每当您使用 newInstance() 创建 ViewPager fragment 时传入页面 fragment 的当前位置:

所以,在 TvShowEpisodeDetails Activity :

for (int i = 0; i < mEpisodes.size(); i++)
fragments.add(TvShowEpisodeDetailsFragment
.newInstance(mShowId,
Integer.parseInt(mEpisodes.get(i).getSeason()),
Integer.parseInt(mEpisodes.get(i).getEpisode()),
i)); // The position

并且在 TvShowEpisodeDetailsFragment fragment ,将其注册到 fragment 参数的一个字段中:

public static TvShowEpisodeDetailsFragment newInstance(String showId, int season, int episode, int position) { // adding position
TvShowEpisodeDetailsFragment pageFragment = new TvShowEpisodeDetailsFragment();
Bundle bundle = new Bundle();

// trimmed code.

bundle.putInt("position", position); // <<<< into the bundle
pageFragment.setArguments(bundle);
return pageFragment;
}
  • 并在创建适配器时设置它:
int currentPosition = getArguments().getInt("position");
planetAdapter = new PlanetAdapter(episodeslist, currentPosition, new PlanetAdapter.OnItemClickListener() {
@Override
public void onItemClick(final int pos) {
mCallback.sendText(pos);
}
});
  • 并在适配器中反射(reflect)出来以突出显示该项目:
public class PlanetAdapter extends RecyclerView.Adapter<PlanetAdapter.PlanetViewHolder> {

private final int highlightedPos;
public PlanetAdapter(ArrayList<PlanetModel> episodeslist, int highlightedPosition, OnItemClickListener listener) {
this.episodeslist = episodeslist;
this.listener = listener;
this.highlightedPos = highlightedPosition; // <<< set the position
}

@Override
public void onBindViewHolder(PlanetAdapter.PlanetViewHolder vh, final int position) {
TextView tv = (TextView) vh.itemView;
PlanetModel planetModel = episodeslist.get(position);
tv.setText(planetModel.getPlanetName());
tv.setCompoundDrawablesWithIntrinsicBounds(R.drawable.bg, 0, 0, 0);

if (highlightedPos == position) { //<<<<< Highlight the item
vh.itemView.setBackgroundColor(getContext().getResources().getColor(R.color.colorPrimaryLight));
Log.d("LOG_TAG", "onClick: Highlight item: " + highlightedPos);

} else {
vh.itemView.setBackgroundColor(getContext().getResources().getColor(R.color.colorPrimaryDark));
Log.d("LOG_TAG", "onClick: No highlight: " + highlightedPos);
}
}
}

关于java - RecyclerView 能否与其余 fragment 布局一起滚动?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/68210077/

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