I am implementing a music player app. I am able to fetch the songs from the sd card. But stuck in something from hours i.e. I am unable to make the songs play inside the fragment.
Here is the MainActivity class which is having 3 tab fragments.
public class MainActivity extends AppCompatActivity {
private final String[] TITLES = {"Now playing", "Library", "Groups"};
private static boolean isInForeground = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//if (savedInstanceState == null) {}
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Initialize the ViewPager and set an adapter
ViewPager pager = (ViewPager) findViewById(R.id.pager);
pager.setAdapter(new PagerAdapter(getSupportFragmentManager(), getBaseContext()));
// Bind the tabs to the ViewPager
PagerSlidingTabStrip tabs = (PagerSlidingTabStrip) findViewById(R.id.tabs);
tabs.setShouldExpand(true);
tabs.setViewPager(pager);
//Whenever the user changes tab, we want the title to change too
tabs.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
@Override
public void onPageSelected(int position) {
setTitle(TITLES[position]);
}
});
//We want to have the library as default view
pager.setCurrentItem(1);
setTitle(TITLES[1]);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class MainFragment extends Fragment {
public MainFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_song_library, container, false);
return view;
}
}
public class PagerAdapter extends FragmentPagerAdapter
implements PagerSlidingTabStrip.CustomTabProvider {
private ArrayList<Integer> tab_icon = new ArrayList<Integer>();
Context myContext;
public PagerAdapter(FragmentManager fm, Context context) {
super(fm);
myContext = context;
tab_icon.add(context.getResources().getIdentifier("ic_play_arrow_white_36dp", "drawable", context.getPackageName()));
tab_icon.add(context.getResources().getIdentifier("ic_list_white_36dp", "drawable", context.getPackageName()));
tab_icon.add(context.getResources().getIdentifier("ic_group_white_36dp", "drawable", context.getPackageName()));
}
@Override
public CharSequence getPageTitle(int position) {
return TITLES[position];
}
@Override
public int getCount() {
return TITLES.length;
}
@Override
public Fragment getItem(int position) {
if(position == 0){
return SongNowPlayingFragment.newInstance();
} else if (position == 1){
return SongLibraryFragment.newInstance();
} else if(position == 2){
return GroupFragment.newInstance();
}
System.err.println("Invalid tab fragment!");
return new Fragment();
}
@Override
public View getCustomTabView(ViewGroup viewGroup, int position) {
LinearLayout imageView = (LinearLayout) LayoutInflater.from(myContext)
.inflate(R.layout.tab_layout, null, false);
ImageView tabImage = (ImageView) imageView.findViewById(R.id.tabImage);
tabImage.setImageResource(tab_icon.get(position));
return imageView;
}
}
@Override
protected void onResume()
{
super.onResume();
isInForeground = true;
}
@Override
protected void onPause()
{
super.onPause();
isInForeground = false;
}
static boolean isInForeground(){
return isInForeground;
}
}
This is the SongLibraryFragment in which I have added the songs from the user device. Now I want to play those songs.
public class SongLibraryFragment extends Fragment implements MediaPlayerControl {
private ArrayList<SongItem> songList;
private ListView songView;
private MusicService musicSrv;
private Intent playIntent;
private boolean musicBound=false;
private MusicController controller;
private boolean paused=false, playbackPaused=false;
private MainActivity mainActivity = null;
public static SongLibraryFragment newInstance() {
SongLibraryFragment f = new SongLibraryFragment();
Bundle b = new Bundle();
f.setArguments(b);
return f;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_song_library, container, false);
return rootView;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mainActivity = (MainActivity) SongLibraryFragment.this.getActivity();
songView = (ListView) getView().findViewById(R.id.library_song_list);
songList = new ArrayList<SongItem>();
getSongList();
SongAdapter songAdt = new SongAdapter(getActivity(), songList);
songView.setAdapter(songAdt);
Collections.sort(songList, new Comparator<SongItem>() {
public int compare(SongItem a, SongItem b) {
return a.getTitle().compareTo(b.getTitle());
}
});
setController();
}
//connect to the service
private ServiceConnection musicConnection = new ServiceConnection(){
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
MusicBinder binder = (MusicBinder)service;
//get service
musicSrv = binder.getService();
//pass list
musicSrv.setList(songList);
musicBound = true;
}
@Override
public void onServiceDisconnected(ComponentName name) {
musicBound = false;
}
};
@Override
public void onStart() {
super.onStart();
if(playIntent==null){
playIntent = new Intent(getActivity(), MusicService.class);
this.getActivity().bindService(playIntent, musicConnection, Context.BIND_AUTO_CREATE);
this.getActivity().startService(playIntent);
}
}
public void songPicked(View view){
musicSrv.setSong(Integer.parseInt(view.getTag().toString()));
musicSrv.playSong();
if(playbackPaused){
setController();
playbackPaused=false;
}
controller.show(0);
}
public void getSongList() {
//retrieve song info
ContentResolver musicResolver = getActivity().getContentResolver();
Uri musicUri = android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
Cursor musicCursor = musicResolver.query(musicUri, null, null, null, null);
if(musicCursor!=null && musicCursor.moveToFirst()){
//get columns
int titleColumn = musicCursor.getColumnIndex
(android.provider.MediaStore.Audio.Media.TITLE);
int idColumn = musicCursor.getColumnIndex
(android.provider.MediaStore.Audio.Media._ID);
int artistColumn = musicCursor.getColumnIndex
(android.provider.MediaStore.Audio.Media.ARTIST);
//add songs to list
do {
long thisId = musicCursor.getLong(idColumn);
String thisTitle = musicCursor.getString(titleColumn);
String thisArtist = musicCursor.getString(artistColumn);
songList.add(new SongItem(thisId, thisTitle, thisArtist));
}
while (musicCursor.moveToNext());
}
}
@Override
public boolean canPause() {
return true;
}
@Override
public boolean canSeekBackward() {
return true;
}
@Override
public boolean canSeekForward() {
return true;
}
@Override
public int getAudioSessionId() {
return 0;
}
@Override
public int getBufferPercentage() {
return 0;
}
@Override
public int getCurrentPosition() {
if(musicSrv!=null && musicBound && musicSrv.isPng())
return musicSrv.getPosn();
else return 0;
}
@Override
public int getDuration() {
if(musicSrv!=null && musicBound && musicSrv.isPng())
return musicSrv.getDur();
else return 0;
}
@Override
public boolean isPlaying() {
if(musicSrv!=null && musicBound)
return musicSrv.isPng();
return false;
}
@Override
public void pause() {
playbackPaused=true;
musicSrv.pausePlayer();
}
@Override
public void seekTo(int pos) {
musicSrv.seek(pos);
}
@Override
public void start() {
musicSrv.go();
}
private void setController(){
//set the controller up
controller = new MusicController(getActivity());
controller.setPrevNextListeners(new View.OnClickListener() {
@Override
public void onClick(View v) {
playNext();
}
}, new View.OnClickListener() {
@Override
public void onClick(View v) {
playPrev();
}
});
controller.setMediaPlayer(this);
controller.setAnchorView(getActivity().findViewById(R.id.library_song_list));
controller.setEnabled(true);
}
//play next
private void playNext(){
musicSrv.playNext();
if(playbackPaused){
setController();
playbackPaused=false;
}
controller.show(0);
}
//play previous
private void playPrev(){
musicSrv.playPrev();
if(playbackPaused){
setController();
playbackPaused=false;
}
controller.show(0);
}
@Override
public void onPause(){
super.onPause();
paused=true;
}
@Override
public void onResume(){
super.onResume();
if(paused){
setController();
paused=false;
}
}
@Override
public void onStop() {
controller.hide();
super.onStop();
}
@Override
public void onDestroy() {
this.getActivity().stopService(playIntent);
musicSrv=null;
super.onDestroy();
}
SongAdapter class
public class SongAdapter extends BaseAdapter {
private ArrayList<SongItem> songs;
private LayoutInflater songInf;
public SongAdapter(Context c, ArrayList<SongItem> theSongs){
songs=theSongs;
songInf=LayoutInflater.from(c);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return songs.size();
}
@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
//map to song layout
LinearLayout songLay = (LinearLayout)songInf.inflate
(R.layout.song, parent, false);
//get title and artist views
TextView songView = (TextView)songLay.findViewById(R.id.song_title);
TextView artistView = (TextView)songLay.findViewById(R.id.song_artist);
//ImageView imageView = (ImageView)songLay.findViewById(R.id.song_image);
//get song using position
SongItem currSong = songs.get(position);
//get title and artist strings
songView.setText(currSong.getTitle());
artistView.setText(currSong.getArtist());
//imageView.setImage(currSong.getImage());
//set position as tag
songLay.setTag(position);
return songLay;
}
Song.xml file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp"
android:onClick="songPicked">
<TextView
android:id="@+id/song_title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
style="@style/Base.TextAppearance.AppCompat.Title"
android:textColor="@color/primary_text_default_material_light"/>
<TextView
android:id="@+id/song_artist"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
style="@style/Base.TextAppearance.AppCompat.Subhead"
android:textColor="@color/secondary_text_default_material_light"/>
</LinearLayout>
Error
java.lang.IllegalStateException: Could not find a method songPicked(View) in the activity class co.adrianblan.noraoke.MainActivity for onClick handler on view class android.widget.LinearLayout
So the main problem is with the songPicked method inside SongFragmentLibrary. I have added the onClick: songPicked in the song.xml file but it is searching for the songPicked method inside the MainActivity. I am not getting what is the problem.
Please can anyone help me with this?
