I'm trying to create an app that plays an audio file when a button, on a specific item of a RecyclerView, is clicked. The first item, actually. I'm trying to do it in the most efficient way.
So far, I'm trying to store the path to the file (R.raw.something) in a Arraylist with a custom Class I created. I just want to play the audio from the first item in the recyclerView.
// Here's the function I call to add items to the list
public void getSongsContent(){
if (mExampleList.size()==0){
mExampleList.add(new ExampleItems("The Lion Sleeps Tonight", "Meme Community",R.raw.thelionsleepstonight ));
mExampleList.add(new ExampleItems("And I Oop!", "Jasmine Master",R.raw.andioop ));
mExampleList.add(new ExampleItems("Hoes Mad!","Famous Dex" ,R.raw.hoesmad ));
}
}
// Here's the ExampleItems class
public class ExampleItems {
private String mNameoftheSong;
private String mNameoftheArtists;
private int mSongPath;
public ExampleItems(String NameoftheSong, String NameoftheArtists, int PathofTheSong){
mNameoftheSong = NameoftheSong;
mSongPath = PathofTheSong;
mNameoftheArtists = NameoftheArtists;
}
public String getNameoftheSong(){
return mNameoftheSong;
}
public String getNameoftheArtists(){
return mNameoftheArtists;
}
public int getPathtoTheSong(){
return mSongPath;
}
}
// And Here's the playAudio function which makes the app crash.
private void playAudio(){
int path = mExampleList.get(0).getPathtoTheSong();
if (player==null){
player = MediaPlayer.create(this,path );
player.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
stopPlayer();
}
});
}
player.start();
}
I'm expecting the correct audio to be played depending on which Item I have put first in the recyclerView. I have seen on another post that it is not possible to store any ressource paths into an Arraylist, and that I should probably move the files to the "/Assets" Right now, the app crashes when the button is pressed. How can I fix this?
Here's the stack trace:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.awolobes.pavilion.wavedrop, PID: 25947
android.content.res.Resources$NotFoundException: Resource ID #0x0
at android.content.res.ResourcesImpl.getValue(ResourcesImpl.java:190)
at android.content.res.ResourcesImpl.openRawResourceFd(ResourcesImpl.java:287)
at android.content.res.Resources.openRawResourceFd(Resources.java:1446)
at android.media.MediaPlayer.create(MediaPlayer.java:941)
at android.media.MediaPlayer.create(MediaPlayer.java:924)
at com.awolobes.pavilion.wavedrop.MainActivity.playAudio(MainActivity.java:112)
at com.awolobes.pavilion.wavedrop.MainActivity.access$400(MainActivity.java:22)
at com.awolobes.pavilion.wavedrop.MainActivity$5.onButtonClick(MainActivity.java:145)
at com.awolobes.pavilion.wavedrop.RecyclerViewAdapter$PinnedViewHolder$1.onClick(RecyclerViewAdapter.java:61)
at android.view.View.performClick(View.java:5675)
at android.view.View$PerformClick.run(View.java:22641)
at android.os.Handler.handleCallback(Handler.java:836)
at android.os.Handler.dispatchMessage(Handler.java:103)
at android.os.Looper.loop(Looper.java:203)
at android.app.ActivityThread.main(ActivityThread.java:6251)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1063)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:924)
Finally, here's the entire MainActivity.java
public class MainActivity extends AppCompatActivity {
MediaPlayer player;
// RecyclerView Variables
private ArrayList<ExampleItems> mExampleList;
private RecyclerView mRecylerView;
private RecyclerViewAdapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
loadData();
setContentView(R.layout.activity_main);
getSongsContent();
createRecyclerView();
}
@Override
protected void onPause() {
super.onPause();
saveData();
}
public void getSongsContent(){
if (mExampleList.size()==0){
mExampleList.add(new ExampleItems("The Lion Sleeps Tonight", "Meme Community",R.raw.thelionsleepstonight ));
mExampleList.add(new ExampleItems("And I Oop!", "Jasmine Master",R.raw.andioop ));
mExampleList.add(new ExampleItems("Hoes Mad!","Famous Dex" ,R.raw.hoesmad ));
}
}
private void saveData(){
SharedPreferences sharedPreferences = getSharedPreferences("shared preferences",MODE_PRIVATE );
SharedPreferences.Editor editor = sharedPreferences.edit();
Gson gson = new Gson();
String json = gson.toJson(mExampleList);
editor.putString("State",json );
editor.apply();
}
private void loadData(){
SharedPreferences sharedPreferences = getSharedPreferences("shared preferences",MODE_PRIVATE );
Gson gson = new Gson();
String json = sharedPreferences.getString("State",null );
Type type = new TypeToken<ArrayList<ExampleItems>>() {}.getType();
mExampleList = gson.fromJson(json,type );
if (mExampleList == null){
mExampleList = new ArrayList<>();
}
}
private void playAudio(){
int path = mExampleList.get(0).getPathtoTheSong();
if (player==null){
player = MediaPlayer.create(this,path );
player.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
stopPlayer();
}
});
}
player.start();
}
private void stopPlayer(){
if (player != null){
player.release();
player = null;
}
}
public void createRecyclerView(){
mRecylerView = findViewById(R.id.Recyclerview);
mRecylerView.setHasFixedSize(true);
mLayoutManager = new LinearLayoutManager(this);
mAdapter = new RecyclerViewAdapter(mExampleList);
mRecylerView.setLayoutManager(mLayoutManager);
mRecylerView.setAdapter(mAdapter);
mAdapter.setOnitemClickListener(new RecyclerViewAdapter.OnItemClickListener() {
@Override
public void onItemClick(int position) {
swapData(position);
}
@Override
public void onButtonClick(int position) {
playAudio();
}
});
}
public void swapData(int position){
mExampleList.add(0,mExampleList.remove(position));
mAdapter.notifyItemMoved(position,0 );
}
}
I hope it can help.
