如何解决如何在RecyclerView中获取所选项目的路径?
我正在创建一个类似shareit的应用程序。我已经从Mediastore导入了所有音频文件,并制作了一个音频列表,并通过recyclerview显示了该音频列表。我想在recyclerview中选择多个项目,并获取recyclerview所选项目的路径,那我该怎么办?
Recyclerview适配器类。
public class audioListAdapter extends RecyclerView.Adapter<audioListAdapter.audioViewHolder> {
private String[] data;
public audioListAdapter(String[] data) {
this.data = data;
}
@NonNull
@Override
public audioViewHolder onCreateViewHolder(@NonNull ViewGroup parent,int viewType) {
LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
View view = layoutInflater.inflate(layout.audio_list_items,parent,false);
return new audioViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull audioViewHolder holder,int position) { }
@Override
public int getItemCount() { return data.length; }
public static class audioViewHolder extends RecyclerView.ViewHolder {
ImageView imgIcon;
TextView audioTitle;
public audioViewHolder(View viewItems) {
super(viewItems);
imgIcon = viewItems.findViewById(id.audioimageicon);
audioTitle = viewItems.findViewById(id.audiotitle);
}
}
}
我在片段中创建了RecyclerView。 片段xml:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/programmingList"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
片段类:
public class musicFragment extends Fragment {
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater,@Nullable ViewGroup container,@Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_music,container,false);
//getting all audio files using mediastore and make a videolist.
List<String> audioList = new ArrayList<String>();
//retrieve song info
ContentResolver musicResolver = getActivity().getContentResolver();
Uri musicUri = android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
Cursor musicCursor = musicResolver.query(musicUri,null,null);
if (musicCursor != null && musicCursor.moveToFirst()) {
//get columns
int titleColumn = musicCursor.getColumnIndex
(android.provider.MediaStore.Audio.Media.TITLE);
//add songs to list
do {
String thisTitle = musicCursor.getString(titleColumn);
audioList.add(thisTitle);
} while (musicCursor.moveToNext());
}
String[] audio = new String[audioList.size()];
RecyclerView recyclerView = rootView.findViewById(R.id.programmingList);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
recyclerView.setAdapter(new audioListAdapter(audio));
return rootView;
}
}
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