我有一个recyclerview,我使用firebasecollector用imageview填充一个网格。我想能够在循环视图中左右滑动,在两类图像之间切换。如果我在categoryone中,向左滑动,我将切换到category2,并调用firebaserecycler用category2图像填充recyclerview。当我向右滑动时,反之亦然。所以本质上,我在处理刷卡的ontouchlistener中调用firebaserecycler。但是,我也希望能够在不同的活动中单击图像以打开特定的图像。为此,我在firebasecollercler中创建了另一个侦听器。基本上有嵌套的侦听器。我在一个片段中实现这个,所以我不能使用dispatchtouchevent。
explorefragment.java文件
package Fragments;
import ...
public class ExploreFragment extends Fragment {
// declare layout ids
FrameLayout flExploreFragment;
TextView tvExploreSearch;
ImageView ivExploreFRMedia, ivExploreFRServices;
FrameLayout flExploreFRMediaBar, flExploreFRServicesBar;
ScrollView svExploreFRPosts;
RecyclerView rvExploreFRPosts;
// local variables
boolean isMedia;
float x1, x2; // for swiping functionality
@SuppressLint("ClickableViewAccessibility")
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_explore, container, false);
getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
// initialize layout ids
flExploreFragment = getActivity().findViewById(R.id.flExplore_Fragment);
tvExploreSearch = v.findViewById(R.id.tvExploreFR_Search);
ivExploreFRMedia = v.findViewById(R.id.ivExploreFR_Media);
ivExploreFRServices = v.findViewById(R.id.ivExploreFR_Services);
flExploreFRMediaBar = v.findViewById(R.id.flExploreFR_MediaBar);
flExploreFRServicesBar = v.findViewById(R.id.flExploreFR_ServicesBar);
rvExploreFRPosts = v.findViewById(R.id.rvExploreFR_Posts);
svExploreFRPosts = v.findViewById(R.id.svExploreFR_Posts);
// initialize local variables
isMedia = true;
// set recycler adapter layout
rvExploreFRPosts.setLayoutManager(new GridLayoutManager(getActivity(), 3));
explorePostsAdapter();
// set listeners
tvExploreSearch.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final Fragment frSearch = new SearchExploreFragment();
getActivity().getSupportFragmentManager().beginTransaction().replace(flExploreFragment.getId(), frSearch).addToBackStack(null).commit();
}
});
ivExploreFRMedia.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (!isMedia) {
isMedia = true;
explorePostsAdapter();
}
}
});
ivExploreFRServices.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (isMedia) {
isMedia = false;
explorePostsAdapter();
}
}
});
rvExploreFRPosts.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch(event.getAction()) {
case MotionEvent.ACTION_DOWN:
x1 = event.getX();
break;
case MotionEvent.ACTION_UP:
x2 = event.getX();
// swipe left, if user swiped left & swipe was done in fragment
if(x1 > (x2 + 170)) {
if (isMedia) {
isMedia = false;
explorePostsAdapter();
}
}
// swipe right, ...
else if((x1 + 170) < x2) {
if (!isMedia) {
isMedia = true;
explorePostsAdapter();
}
}
}
return true;
}
});
return v;
}
// move bar and change post type based on typeAdapter
private void explorePostsAdapter() {
// set which post tab to underline and set the query
Query postQuery;
if (isMedia){
isMedia = true;
flExploreFRMediaBar.setPadding(0,0,0,6);
flExploreFRServicesBar.setPadding(0,0,0,0);
postQuery = artistlyDB.orderedByQuery("Media", "user");
}
else {
isMedia = false;
flExploreFRServicesBar.setPadding(0,0,0,6);
flExploreFRMediaBar.setPadding(0,0,0,0);
postQuery = artistlyDB.orderedByQuery("Services", "user");;
}
// implement FirebaseRecycler on recycler adapter
FirebaseRecyclerOptions<postsAdapter> options = new FirebaseRecyclerOptions.Builder<postsAdapter>().setQuery(postQuery, postsAdapter.class).build();
final FirebaseRecyclerAdapter<postsAdapter, ExploreFragment.postsAdapterViewHolder> adapter = new FirebaseRecyclerAdapter<postsAdapter, ExploreFragment.postsAdapterViewHolder>(options) {
@Override
protected void onBindViewHolder(@NonNull ExploreFragment.postsAdapterViewHolder holder, final int position, @NonNull final postsAdapter model) {
holder.setInfo(getActivity(), model.getPhoto());
holder.mView.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch(event.getAction()) {
case MotionEvent.ACTION_UP:
float difference = x2 - x1;
if (difference > -50 && difference < 50) {
final String postID = getRef(position).getKey();
Intent intent = new Intent(getActivity(), PostActivity.class);
intent.putExtra("postID", postID);
intent.putExtra("postType", isMedia);
startActivity(intent);
}
}
return true;
}
});
}
@NonNull
@Override
public ExploreFragment.postsAdapterViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.adapter_posts, parent, false);
return new ExploreFragment.postsAdapterViewHolder(v);
}
};
adapter.startListening();
rvExploreFRPosts.setAdapter(adapter);
}
// view Holder Class need for recycler adapter
public static class postsAdapterViewHolder extends RecyclerView.ViewHolder {
View mView;
public postsAdapterViewHolder(View itemView) {
super(itemView);
mView = itemView;
}
public void setInfo(Context ctx, String photo){
final Context ctxF = ctx;
final ImageView ivPostsAdImage = mView.findViewById(R.id.ivPostsAd_Image);
Glide.with(ctxF).load(photo).into(ivPostsAdImage);
}
}
}
片段\u explore.xml
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context="Fragments.ExploreFragment">
<LinearLayout
android:orientation="horizontal"
android:layout_width="0dp"
android:layout_height="0dp" android:id="@+id/hlExploreFR_ActionBar"
app:layout_constraintHeight_percent=".07" app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent">
<ImageView
android:layout_width="wrap_content"
android:layout_height="match_parent" app:srcCompat="@drawable/ic_search"
android:id="@+id/ivExploreFR_SearchImage"
/>
<TextView
android:id="@+id/tvExploreFR_Search"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginLeft="2dp"
android:layout_weight="1"
android:background="@null"
android:gravity="center|left"
android:hint="Search"
android:textSize="19sp" />
</LinearLayout>
<LinearLayout
android:id="@+id/hlExploreFR_PostTypes"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="10dp"
android:background="@android:color/darker_gray"
android:orientation="horizontal"
app:layout_constraintHeight_percent=".05"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@id/hlExploreFR_ActionBar">
<ImageView
android:id="@+id/ivExploreFR_Media"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginTop="1dp"
android:layout_marginRight="1dp"
android:layout_weight="1"
android:background="@android:color/white"
android:src="@drawable/ic_media" />
<ImageView
android:id="@+id/ivExploreFR_Services"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginLeft="1dp"
android:layout_marginTop="1dp"
android:layout_weight="1"
android:background="@android:color/white"
android:src="@drawable/ic_services" />
</LinearLayout>
<LinearLayout
android:id="@+id/hlExploreFR_PostsBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@android:color/darker_gray"
android:orientation="horizontal"
app:layout_constraintTop_toBottomOf="@id/hlExploreFR_PostTypes">
<FrameLayout
android:id="@+id/flExploreFR_MediaBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@android:color/black"
android:paddingBottom="3dp">
</FrameLayout>
<FrameLayout
android:id="@+id/flExploreFR_ServicesBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@android:color/black">
</FrameLayout>
</LinearLayout>
<ScrollView
android:id="@+id/svExploreFR_Posts"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@id/hlExploreFR_PostsBar">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/rvExploreFR_Posts"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
问题
所以当片段第一次被加载时,我能够成功地点击一个图像并在一个新的活动中打开它。但是,只要我刷一次,然后重新加载回收视图,我就不能再点击图像了。刷卡从一开始就非常有效。只有在第一次调用firebasecollercler时,单击图像才起作用。当它没有在ontouchlister中调用以进行刷卡时。只有当它从刷卡侦听器内部调用时,它才不起作用。有人知道为什么会这样吗?
暂无答案!
目前还没有任何答案,快来回答吧!