Java 单击recyclerView中的“下一步”按钮后加载下一项
我有一个名为Java 单击recyclerView中的“下一步”按钮后加载下一项,java,android,firebase,firebase-realtime-database,android-recyclerview,Java,Android,Firebase,Firebase Realtime Database,Android Recyclerview,我有一个名为ArtistActivity的活动,它包含一个从Firebase加载歌曲数据并在艺术家活动中显示的RecyclerView。我的ArtistActivityRecyclerView有一个适配器类和一个视图持有者类。当我单击我的回收视图中的项目时,它会将songUrl,songName,SongArtister发送到另一个名为SongPlayingActivity的活动,该活动接受songUrl并播放歌曲 我的主要问题是,我的歌曲播放活动中有“下一步”按钮,我想在用户单击“下一步”按钮
ArtistActivity
的活动,它包含一个从Firebase加载歌曲数据并在艺术家活动中显示的RecyclerView。我的ArtistActivity
RecyclerView有一个适配器类和一个视图持有者类。当我单击我的回收视图中的项目时,它会将songUrl
,songName
,SongArtister
发送到另一个名为SongPlayingActivity
的活动,该活动接受songUrl
并播放歌曲
我的主要问题是,我的歌曲播放活动中有“下一步”按钮,我想在用户单击“下一步”按钮后加载下一项。例如,如果用户单击“下一步”按钮,它将停止播放上一首歌曲,并从歌曲列表加载下一首歌曲。很像它在Spotify上的工作原理
我希望你能理解我的问题,如果你对此有任何答案,请回复
这是我的密码:-
艺术性:
public class ArtistActivity extends AppCompatActivity {
private RecyclerView mRecyclerView;
private ValueEventListener eventListener;
private DatabaseReference mDataRef, artist_ref;
private List<PanelList> mList;
private PanelAdapter panelAdapter;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.artist1layout);
mRecyclerView = findViewById(R.id.artist_song_recyclerview);
mDataRef = FirebaseDatabase.getInstance().getReference("ArtistView").child(getIntent().getStringExtra("Artist"))
.child("Songs");
mRecyclerView.setHasFixedSize(true);
mDataRef.keepSynced(true);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
mList = new ArrayList<>();
panelAdapter = new PanelAdapter(ArtistActivity.this, mList);
mRecyclerView.setAdapter(panelAdapter);
eventListener = mDataRef.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
mList.clear();
for (DataSnapshot postSnapshot : dataSnapshot.getChildren()) {
PanelList list = postSnapshot.getValue(PanelList.class);
mList.add(list);
}
panelAdapter.notifyDataSetChanged();
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
}
public class PanelAdapter extends RecyclerView.Adapter<PanelAdapter.PanelViewHolder> {
private Context mContext;
private List<PanelList> mUploads;
public PanelAdapter(Context context, List<PanelList> panelList) {
mContext = context;
mUploads = panelList;
}
@NonNull
@Override
public PanelViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(mContext).inflate(R.layout.artist_recycler_layout, parent, false);
return new PanelViewHolder(v);
// Toast.makeText(mContext, "" + ge, Toast.LENGTH_SHORT).show();
}
@Override
public void onBindViewHolder(@NonNull PanelViewHolder holder, int position) {
PanelList panelList = mUploads.get(position);
holder.textViewName.setText(panelList.getSongName());
Glide.with(mContext)
.load(panelList.getSongImageUri())
.centerCrop()
.into(holder.circleImageView);
holder.thisLayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String url = panelList.getSongUrl();
Intent playSongActivity = new Intent(mContext, D.class);
playSongActivity.putExtra("SongUrl", panelList.getSongUrl());
mContext.startActivity(playSongActivity);
}
});
}
@Override
public int getItemCount() {
return mUploads.size();
}
public class PanelViewHolder extends RecyclerView.ViewHolder {
private LinearLayout thisLayout;
public PanelViewHolder(@NonNull View itemView) {
super(itemView);
thisLayout = itemView.findViewById(R.id.artist_linear);
}
}
}
public class ArtistActivity扩展了appcompativity活动{
私人回收视图mRecyclerView;
私有值事件监听器事件监听器;
私有数据库参考mDataRef,artist_ref;
私人名单;
专用面板适配器面板适配器;
@凌驾
创建时受保护的void(@Nullable Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.Artist1布局);
mRecyclerView=findViewById(R.id.artist\u song\u recyclerview);
mDataRef=FirebaseDatabase.getInstance().getReference(“ArtistView”).child(getIntent().getStringExtra(“艺术家”))
.儿童(“歌曲”);
mRecyclerView.setHasFixedSize(true);
mDataRef.keepSynced(true);
mRecyclerView.setLayoutManager(新的LinearLayoutManager(this));
mList=新的ArrayList();
panelAdapter=新的panelAdapter(ArtistActivity.this,mList);
mRecyclerView.setAdapter(panelAdapter);
eventListener=mDataRef.addValueEventListener(新的ValueEventListener(){
@凌驾
public void onDataChange(@NonNull DataSnapshot DataSnapshot){
mList.clear();
对于(DataSnapshot postSnapshot:DataSnapshot.getChildren()){
PanelList=postSnapshot.getValue(PanelList.class);
列表添加(列表);
}
panelAdapter.notifyDataSetChanged();
}
@凌驾
已取消的公共void(@NonNull DatabaseError DatabaseError){
}
});
}
}
ViewHolder/适配器类:
public class ArtistActivity extends AppCompatActivity {
private RecyclerView mRecyclerView;
private ValueEventListener eventListener;
private DatabaseReference mDataRef, artist_ref;
private List<PanelList> mList;
private PanelAdapter panelAdapter;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.artist1layout);
mRecyclerView = findViewById(R.id.artist_song_recyclerview);
mDataRef = FirebaseDatabase.getInstance().getReference("ArtistView").child(getIntent().getStringExtra("Artist"))
.child("Songs");
mRecyclerView.setHasFixedSize(true);
mDataRef.keepSynced(true);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
mList = new ArrayList<>();
panelAdapter = new PanelAdapter(ArtistActivity.this, mList);
mRecyclerView.setAdapter(panelAdapter);
eventListener = mDataRef.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
mList.clear();
for (DataSnapshot postSnapshot : dataSnapshot.getChildren()) {
PanelList list = postSnapshot.getValue(PanelList.class);
mList.add(list);
}
panelAdapter.notifyDataSetChanged();
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
}
public class PanelAdapter extends RecyclerView.Adapter<PanelAdapter.PanelViewHolder> {
private Context mContext;
private List<PanelList> mUploads;
public PanelAdapter(Context context, List<PanelList> panelList) {
mContext = context;
mUploads = panelList;
}
@NonNull
@Override
public PanelViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(mContext).inflate(R.layout.artist_recycler_layout, parent, false);
return new PanelViewHolder(v);
// Toast.makeText(mContext, "" + ge, Toast.LENGTH_SHORT).show();
}
@Override
public void onBindViewHolder(@NonNull PanelViewHolder holder, int position) {
PanelList panelList = mUploads.get(position);
holder.textViewName.setText(panelList.getSongName());
Glide.with(mContext)
.load(panelList.getSongImageUri())
.centerCrop()
.into(holder.circleImageView);
holder.thisLayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String url = panelList.getSongUrl();
Intent playSongActivity = new Intent(mContext, D.class);
playSongActivity.putExtra("SongUrl", panelList.getSongUrl());
mContext.startActivity(playSongActivity);
}
});
}
@Override
public int getItemCount() {
return mUploads.size();
}
public class PanelViewHolder extends RecyclerView.ViewHolder {
private LinearLayout thisLayout;
public PanelViewHolder(@NonNull View itemView) {
super(itemView);
thisLayout = itemView.findViewById(R.id.artist_linear);
}
}
}
公共类PanelAdapter扩展了RecyclerView.Adapter{
私有上下文;
私人列表多路复用器;
公共PanelAdapter(上下文上下文、列表panelList){
mContext=上下文;
mUploads=小组成员;
}
@非空
@凌驾
PublicPanelViewHolder onCreateViewHolder(@NonNull ViewGroup父级,int-viewType){
视图v=布局Flater.from(mContext).充气(R.layout.artist\u recycler\u布局,父级,false);
返回新的PanelViewHolder(v);
//Toast.makeText(mContext,“+ge,Toast.LENGTH_SHORT.show();
}
@凌驾
public void onBindViewHolder(@NonNull PanelViewHolder,int位置){
PanelList PanelList=mUploads.get(位置);
holder.textViewName.setText(panelList.getSongName());
使用(mContext)滑动
.load(panelList.getSongImageUri())
.centerCrop()
.进入(支架.圆形图像视图);
holder.thisLayout.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图){
字符串url=panelList.getSongUrl();
意图播放歌曲活动=新意图(mContext,D.class);
playSongActivity.putExtra(“SongUrl”,panelList.getSongUrl());
mContext.startActivity(playSongActivity);
}
});
}
@凌驾
public int getItemCount(){
返回mUploads.size();
}
公共类PanelViewHolder扩展了RecyclerView.ViewHolder{
私人线路布局此布局;
公共PanelViewHolder(@NonNull View itemView){
超级(项目视图);
thisLayout=itemView.findViewById(R.id.Artister\u线性);
}
}
}
我的D班:-
public class D extends AppCompatActivity {
public static SeekBar mSeekbar;
public static ImageView Play_Icon_D;
private Button next_button;
// private Button popup_button;
private TextView Song_D, Artist_D;
private Integer currentIndex;
private List<PanelList> panelList;
private Bundle bundle;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_song_playing);
mSeekbar = findViewById(R.id.seekbar);
Play_Icon_D = findViewById(R.id.play_icon_D_class);
Song_D = findViewById(R.id.song_info_song_D);
Artist_D = findViewById(R.id.song_info_artist_D);
next_button = findViewById(R.id.D_next_button);
bundle = getIntent().getExtras();
panelList = bundle.getParcelableArrayList("SongUrls");
currentIndex = bundle.getInt("currentPlayingIndex");
playSong();
next_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String newUrl = panelList.get(currentIndex).getSongName();
currentIndex = currentIndex + 1;
// Toast.makeText(D.this, newUrl, Toast.LENGTH_SHORT).show();
FirebaseStorage storage = FirebaseStorage.getInstance();
StorageReference reference = storage.getReferenceFromUrl(panelList.get(currentIndex).getSongUrl());
reference.getDownloadUrl().addOnFailureListener(uri -> C.getInstance().play(uri.toString()));
}
});
}
private void playSong() {
FirebaseStorage storage = FirebaseStorage.getInstance();
StorageReference reference = storage.getReferenceFromUrl(panelList.get(currentIndex).getSongUrl());
reference.getDownloadUrl().addOnFailureListener(uri -> C.getInstance().play(uri.toString()));
}
}
public类D扩展了AppCompative活动{
公共静态SeekBar mSeekbar;
公共静态图像视图播放图标;
私人按钮下一个按钮;
//专用按钮弹出按钮;
私人TextView Song_D,艺术家_D;
私有整数索引;
私人名单小组成员;
私有包;
@凌驾
创建时受保护的void(@Nullable Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity\u song\u playing);
mSeekbar=findviewbyd(R.id.seekbar);
Play_Icon_D=findviewbyd(R.id.Play_Icon_D_类);
Song\u D=findViewById(R.id.Song\u info\u Song\u D);
艺术家D=findViewById(R.id.song\u信息\u艺术家D);
下一个按钮=findViewById(R.id.D下一个按钮);
bundle=getIntent().getExtras();
panelList=bundle.getParcelableArrayList(“songURL”);
currentIndex=bundle.getInt(“currentPlayingIndex”);
播放歌曲();
next_button.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图){
String newUrl=panelList.get(currentIndex.getSongName();
currentIndex=currentIndex+1;
//Toast.makeText(D.this,newUrl,Toast.LENGTH_SHORT).show();
FirebaseStorage=FirebaseStorage.getInstance();
StorageReference=storage.getReferenceFromUrl(panelList.get(currentIndex.getSongUrl());
reference.getDownloadUrl().addOnFailureLi
String newUrl = panelList[currentindex].getSongUrl();
currentIndex = currentIndex + 1;