问题：
如何应用微光效果AndroidSwipeProgress？
金阳曜
如何连接我的rssfragment应用微光效果SwipeProgress。当rssfragment正在进行时，我需要向您展示一个shimmer布局。我试过了，但lyt_shimmer没有显示给我看
swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
refreshItems();
}
});
public class RssFragment extends Fragment {
// Added argument key for URL
private static final String ARG_URL = "url_string";
public static final int RECIPES_LIST_SMALL = 0;
public static final int RECIPES_LIST_BIG = 1;
public static final int RECIPES_GRID_2_COLUMN = 2;
public static final int RECIPES_GRID_3_COLUMN = 3;
private RSSFeed rssFeed = null;
private ArrayList<RSSItem> postsList;
private RssAdapter listAdapter;
private ViewModeUtils viewModeUtils;
private SwipeRefreshLayout swipeRefreshLayout;
SharedPref sharedPref;
private Activity mAct;
private RelativeLayout ll;
private String url;
private AdView mAdView;
private View rootView;
private ShimmerFrameLayout lyt_shimmer;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
ll = (RelativeLayout) inflater.inflate(R.layout.fragment_list_refresh, container, false);
return ll;
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
setHasOptionsMenu(true);
lyt_shimmer = ll.findViewById(R.id.shimmer_view_container);
RecyclerView listView = ll.findViewById(R.id.list);
postsList = new ArrayList<>();
listAdapter = new RssAdapter(getContext(), postsList);
listAdapter.setModeAndNotify(InfiniteRecyclerViewAdapter.MODE_PROGRESS);
listView.setAdapter(listAdapter);
listView.setLayoutManager(new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false));
swipeRefreshLayout = ll.findViewById(R.id.swipeRefreshLayout);
swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
refreshItems();
initShimmerLayout();
}
private void initShimmerLayout() {
View lyt_shimmer_recipes_list_big = ll.findViewById(R.id.lyt_shimmer_recipes_list_big);
if (sharedPref.getRecipesViewType() == RECIPES_LIST_SMALL) {
lyt_shimmer_recipes_list_big.setVisibility(View.GONE);
} else if (sharedPref.getRecipesViewType() == RECIPES_LIST_BIG) {
lyt_shimmer_recipes_list_big.setVisibility(View.VISIBLE);
} else if (sharedPref.getRecipesViewType() == RECIPES_GRID_2_COLUMN) {
;
lyt_shimmer_recipes_list_big.setVisibility(View.GONE);
} else if (sharedPref.getRecipesViewType() == RECIPES_GRID_3_COLUMN) {
lyt_shimmer_recipes_list_big.setVisibility(View.GONE);
}
}
});
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mAct = getActivity();
// get URL from arguments
url = RssFragment.this.getArguments().getString(ARG_URL);
refreshItems();
}
private class RssTask extends AsyncTask<Void, Void, Void> {
@Override
protected Void doInBackground(Void... arg0) {
try {
// Pass the URL string as parameter to URL class
URL rssUrl = new URL(url);
SAXParserFactory mySAXParserFactory = SAXParserFactory.newInstance();
SAXParser mySAXParser = mySAXParserFactory.newSAXParser();
XMLReader myXMLReader = mySAXParser.getXMLReader();
RSSHandler myRSSHandler = new RSSHandler();
myXMLReader.setContentHandler(myRSSHandler);
InputSource myInputSource = new InputSource(rssUrl.openStream());
myXMLReader.parse(myInputSource);
rssFeed = myRSSHandler.getFeed();
} catch (ParserConfigurationException | IOException | SAXException e) {
Log.printStackTrace(e);
}
return null;
}
@Override
protected void onPostExecute(Void result) {
if (rssFeed != null) {
if (rssFeed.getList().size() > 0) {
postsList.addAll(rssFeed.getList());
}
listAdapter.setHasMore(false);
listAdapter.setModeAndNotify(InfiniteRecyclerViewAdapter.MODE_LIST);
swipeRefreshLayout.setRefreshing(false);
} else {
String message = null;
if (!url.startsWith("http"))
message = "Debug info: '" + url + "' is most likely not a valid RSS url. Make sure the url entered in your configuration starts with 'http' and verify if it's valid XML using validator.w3.org/feed";
Helper.noConnection(mAct, message);
listAdapter.setModeAndNotify(InfiniteRecyclerViewAdapter.MODE_EMPTY);
swipeRefreshLayout.setRefreshing(false);
}
super.onPostExecute(result);
}
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.rss_menu, menu);
viewModeUtils = new ViewModeUtils(getContext(), getClass());
viewModeUtils.inflateOptionsMenu(menu, inflater);
ThemeUtils.tintAllIcons(menu, mAct);
}
private void refreshItems() {
postsList.clear();
lyt_shimmer.setVisibility(View.GONE);
lyt_shimmer.stopShimmer();
listAdapter.setModeAndNotify(InfiniteRecyclerViewAdapter.MODE_PROGRESS);
new RssTask().execute(
);
}
private void swipeProgress(final boolean show) {
if (!show) {
swipeRefreshLayout.setRefreshing(show);
lyt_shimmer.setVisibility(View.GONE);
lyt_shimmer.stopShimmer();
return;
}
swipeRefreshLayout.post(() -> {
swipeRefreshLayout.setRefreshing(show);
lyt_shimmer.setVisibility(View.VISIBLE);
lyt_shimmer.startShimmer();
});
}
@Override
public void onDestroy() {
super.onDestroy();
swipeProgress(false);
lyt_shimmer.stopShimmer();
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
viewModeUtils.handleSelection(item, new ViewModeUtils.ChangeListener() {
@Override
public void modeChanged() {
listAdapter.notifyDataSetChanged();
}
});
switch (item.getItemId()) {
case R.id.info:
//show information about the feed in general in a dialog
if (rssFeed != null) {
String FeedTitle = (rssFeed.getTitle());
String FeedDescription = (rssFeed.getDescription());
//String FeedPubdate = (myRssFeed.getPubdate()); most times not present
String FeedLink = (rssFeed.getLink());
AlertDialog.Builder builder = new AlertDialog.Builder(mAct);
String titlevalue = getResources().getString(R.string.feed_title_value);
String descriptionvalue = getResources().getString(R.string.feed_description_value);
String linkvalue = getResources().getString(R.string.feed_link_value);
if (FeedLink.equals("")) {
builder.setMessage(titlevalue + ": \n" + FeedTitle +
"\n\n" + descriptionvalue + ": \n" + FeedDescription);
} else {
builder.setMessage(titlevalue + ": \n" + FeedTitle +
"\n\n" + descriptionvalue + ": \n" + FeedDescription +
"\n\n" + linkvalue + ": \n" + FeedLink);
}
builder.setNegativeButton(getResources().getString(R.string.ok), null)
.setCancelable(true);
builder.create();
builder.show();
}
return true;
default:
return super.onOptionsItemSelected(item);
}}
// This is the factory to instantiate the RssFragment instance with the url string as arguments
public static RssFragment newInstance(String url) {
RssFragment newInstance = new RssFragment();
Bundle bundle = new Bundle();
bundle.putString(ARG_URL, url);
newInstance.setArguments(bundle);
return newInstance;
}
}
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto">
<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
android:id="@+id/swipeRefreshLayout"
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:layout_width="match_parent"
android:layout_height="210dp"
android:layout_marginEnd="5dp"
android:layout_marginStart="5dp"
android:layout_marginTop="5dp">
<com.Tamillive.newspaper.EnchantedViewPager
android:id="@+id/viewPager"
android:layout_width="match_parent"
android:layout_height="210dp" />
<me.relex.circleindicator.CircleIndicator
android:id="@+id/indicator_unselected_background"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_marginBottom="5dp"
android:layout_marginEnd="10dp"
app:ci_drawable="@drawable/selecteditem_dot"
app:ci_drawable_unselected="@drawable/nonselecteditem_dot"
app:ci_height="6dp"
app:ci_width="6dp"
android:layout_alignParentRight="true"
android:layout_marginRight="10dp" />
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:background="@color/background_white"
android:orientation="vertical">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/list"
style="@style/listStyleNoPadding"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:divider="@null"
android:focusable="false" />
</LinearLayout>
</LinearLayout>
</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
<com.facebook.shimmer.ShimmerFrameLayout
android:id="@+id/shimmer_view_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:shimmer_duration="1000">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<include
android:id="@+id/lyt_shimmer_recipes_list_big"
layout="@layout/include_shimmer_recipes_list_big" />
</RelativeLayout>
</com.facebook.shimmer.ShimmerFrameLayout>
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="10dp"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="vertical">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintDimensionRatio="H,2:1.1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/bg_shimmer" />
</RelativeLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<View
android:layout_width="match_parent"
android:layout_height="16dp"
android:layout_marginRight="100dp"
android:layout_marginEnd="100dp"
android:background="@drawable/bg_shimmer" />
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:layout_marginTop="8dp"
android:orientation="horizontal">
<View
android:layout_width="100dp"
android:layout_height="12dp"
android:background="@drawable/bg_shimmer" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_marginTop="16dp"
android:orientation="vertical">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintDimensionRatio="H,2:1.1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/bg_shimmer" />
</RelativeLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<View
android:layout_width="match_parent"
android:layout_height="16dp"
android:layout_marginRight="100dp"
android:layout_marginEnd="100dp"
android:background="@drawable/bg_shimmer" />
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:layout_marginTop="8dp"
android:orientation="horizontal">
<View
android:layout_width="100dp"
android:layout_height="12dp"
android:background="@drawable/bg_shimmer" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_marginTop="16dp"
android:orientation="vertical">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintDimensionRatio="H,2:1.1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/bg_shimmer" />
</RelativeLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<View
android:layout_width="match_parent"
android:layout_height="16dp"
android:layout_marginRight="100dp"
android:layout_marginEnd="100dp"
android:background="@drawable/bg_shimmer" />
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:layout_marginTop="8dp"
android:orientation="horizontal">
<View
android:layout_width="100dp"
android:layout_height="12dp"
android:background="@drawable/bg_shimmer" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_marginTop="16dp"
android:orientation="vertical">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintDimensionRatio="H,2:1.1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/bg_shimmer" />
</RelativeLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<View
android:layout_width="match_parent"
android:layout_height="16dp"
android:layout_marginRight="100dp"
android:layout_marginEnd="100dp"
android:background="@drawable/bg_shimmer" />
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:layout_marginTop="8dp"
android:orientation="horizontal">
<View
android:layout_width="100dp"
android:layout_height="12dp"
android:background="@drawable/bg_shimmer" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_marginTop="16dp"
android:orientation="vertical">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintDimensionRatio="H,2:1.1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/bg_shimmer" />
</RelativeLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<View
android:layout_width="match_parent"
android:layout_height="16dp"
android:layout_marginRight="100dp"
android:layout_marginEnd="100dp"
android:background="@drawable/bg_shimmer" />
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:layout_marginTop="8dp"
android:orientation="horizontal">
<View
android:layout_width="100dp"
android:layout_height="12dp"
android:background="@drawable/bg_shimmer" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
</LinearLayout>
共有1个答案
丁沛
你可以从Facebook上使用ShimmerFrameLayout库。
如果您想在RecyclerView项加载时显示Shimmer效果，那么您可以遵循此链接在项目中实现它。
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