This is my code to stop the audio player from activity while using audio player.stop() function without using if condition it causes Null pointer Exception Error.
public void onBackPressed() {
super.onBackPressed();
if(audioPlayer != null)
audioPlayer.stop();
if (mSimpleExoPlayer != null)
mSimpleExoPlayer.stop();
audioWriteAdapters.audioPlayPlayer.stop();
}
}
here is the code for audioplayer adapter page, I want to Stop the audio player from activity. Initially assign the audioplayer as null, inside the functionality setting audio player value from the array list.audio player is working fine in the adapter view.
public class AudioWriteAdapter extends BaseAdapter {
public MediaPlayer audioPlayPlayer = null;
public boolean isPlaying = false;
String finalTimerString = "";
String secondsString = "";
private ArrayList<MessageAudio> messageAudioArrayList;
private LayoutInflater inflater;
private Context context;
private ItemClickListener clickListener;
private Runnable mRunnable;
private Handler mHandler;
public AudioWriteAdapter(Context context){
this.context = context;
}
public AudioWriteAdapter(ArrayList<MessageAudio> messageAudioArrayList, Context mContext, ItemClickListener clickListener) {
this.messageAudioArrayList = messageAudioArrayList;
this.context = mContext;
this.clickListener = clickListener;
}
@Override
public int getCount() {
return messageAudioArrayList.size();
}
@Override
public Object getItem(int i) {
return messageAudioArrayList.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
public void clearMediaPlayer() {
if (audioPlayPlayer != null) {
audioPlayPlayer.release();
audioPlayPlayer = null;
}
}
@Override
public View getView(final int i, final View view, ViewGroup viewGroup) {
View rowView = view;
if (rowView == null) {
rowView = LayoutInflater.from(context).inflate(R.layout.audio_view_pagers, null);
final TextView typeTitle, typeDate;
final ImageView typeDelete, typeEdit, viewRecord, pauseViewAudio, playViewAudio;
final LinearLayout viewAudioLayout;
final TextThumbSeekBar audioViewSeekbar;
typeTitle = rowView.findViewById(R.id.typeTitle);
typeDelete = rowView.findViewById(R.id.typeDelete);
typeEdit = rowView.findViewById(R.id.typeEdit);
viewRecord = rowView.findViewById(R.id.viewRecord);
viewAudioLayout = rowView.findViewById(R.id.viewAudioLayout);
pauseViewAudio = rowView.findViewById(R.id.pauseViewAudio);
playViewAudio = rowView.findViewById(R.id.playViewAudio);
audioViewSeekbar = rowView.findViewById(R.id.audioViewSeekbar);
//typeDate = typeLayout.findViewById(R.id.typeDate);
typeTitle.setText(messageAudioArrayList.get(i).getTitle());
//rowView.setTag("1");
viewRecord.setTag(messageAudioArrayList.get(i).getPath());
viewRecord.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View view) {
mHandler = new Handler();
viewAudioLayout.setVisibility(View.VISIBLE);
if (audioPlayPlayer == null) {
audioPlayPlayer = new MediaPlayer();
try {
audioPlayPlayer.setDataSource(String.valueOf(viewRecord.getTag()));
audioPlayPlayer.prepare();
} catch (java.io.IOException e) {
e.printStackTrace();
}
audioPlayPlayer.start();
if (pauseViewAudio.getVisibility() == View.GONE) {
pauseViewAudio.setVisibility(View.VISIBLE);
}
playViewAudio.setVisibility(View.GONE);
isPlaying = true;
final int duration = audioPlayPlayer.getDuration();
audioViewSeekbar.setProgress(0);
audioViewSeekbar.setMax(duration / 1000);
mRunnable = new Runnable() {
@Override
public void run() {
if (audioPlayPlayer != null) {
int mCurrentPosition = audioPlayPlayer.getCurrentPosition() / 1000; // In milliseconds
audioViewSeekbar.setProgress(mCurrentPosition);
String Total = ((duration / 1000) / 60) + ":" + (duration / 1000) % 60;
int totalLength = duration / 1000;
int remainingLength = (duration - audioPlayPlayer.getCurrentPosition()) - duration;
Log.e("Duration == >", "Total length ==>" + totalLength + " Remaining ==>" + remainingLength);
String remainingSeconds = String.valueOf(((remainingLength / 1000) % 60) - ((duration / 1000) / 60));
if (remainingSeconds.length() < 2) {
remainingSeconds = "0" + remainingSeconds;
}
String remainingTotal = ((remainingLength / 1000) / 60) + ":" + remainingSeconds;
Log.e("Remaining Duration == >", " Remaining ==>" + remainingTotal);
//seekBar.setProgressText(remainingTotal+"/"+Total);
Log.e("Cuurent Position is==>", String.valueOf(mCurrentPosition));
audioViewSeekbar.setProgressText(milliSecondsToTimer(audioPlayPlayer.getCurrentPosition()) + "/" + Total);
}
mHandler.postDelayed(mRunnable, 1000);
}
};
mHandler.postDelayed(mRunnable, 1000);
}
}
}
);
audioViewSeekbar.setOnSeekBarChangeListener(
new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
//audioPlayPlayer.seekTo(i*1000);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
}
);
pauseViewAudio.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View view) {
audioPlayPlayer.pause();
if (mHandler != null) {
mHandler.removeCallbacks(mRunnable);
}
isPlaying = false;
playViewAudio.setVisibility(View.VISIBLE);
pauseViewAudio.setVisibility(View.GONE);
}
}
);
playViewAudio.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View view) {
if (!isPlaying) {
if (audioPlayPlayer != null) {
audioPlayPlayer.start();
isPlaying = true;
pauseViewAudio.setVisibility(View.VISIBLE);
playViewAudio.setVisibility(View.GONE);
final int duration = audioPlayPlayer.getDuration();
mRunnable = new Runnable() {
@Override
public void run() {
if (audioPlayPlayer != null) {
int mCurrentPosition = audioPlayPlayer.getCurrentPosition() / 1000; // In milliseconds
audioViewSeekbar.setProgress(mCurrentPosition);
String Total = ((duration / 1000) / 60) + ":" + (duration / 1000) % 60;
int totalLength = duration / 1000;
int remainingLength = (duration - audioPlayPlayer.getCurrentPosition()) - duration;
Log.e("Duration == >", "Total length ==>" + totalLength + " Remaining ==>" + remainingLength);
String remainingSeconds = String.valueOf(((remainingLength / 1000) % 60) - ((duration / 1000) / 60));
if (remainingSeconds.length() < 2) {
remainingSeconds = "0" + remainingSeconds;
}
String remainingTotal = ((remainingLength / 1000) / 60) + ":" + remainingSeconds;
Log.e("Remaining Duration == >", " Remaining ==>" + remainingTotal);
//seekBar.setProgressText(remainingTotal+"/"+Total);
Log.e("Cuurent Position is==>", String.valueOf(mCurrentPosition));
audioViewSeekbar.setProgressText(milliSecondsToTimer(audioPlayPlayer.getCurrentPosition()) + "/" + Total);
}
mHandler.postDelayed(mRunnable, 1000);
}
};
mHandler.postDelayed(mRunnable, 1000);
}
}
}
}
);
typeDelete.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View view) {
if (clickListener != null) {
//int pos = businessPartnerModelArrayList.indexOf(businessPartnerModelArrayFilteredList.get(getAdapterPosition()));
clickListener.onWriteDeleteClick("audio", i);
}
}
}
);
}
return rowView;
}
private String milliSecondsToTimer(long milliseconds) {
// Convert total duration into time
int hours = (int) (milliseconds / (1000 * 60 * 60));
int minutes = (int) (milliseconds % (1000 * 60 * 60)) / (1000 * 60);
int seconds = (int) ((milliseconds % (1000 * 60 * 60)) % (1000 * 60) / 1000);
// Add hours if there
if (hours > 0) {
finalTimerString = hours + ":";
}
// Prepending 0 to seconds if it is one digit
if (seconds < 10) {
secondsString = "0" + seconds;
} else {
secondsString = "" + seconds;
}
finalTimerString = minutes + ":" + secondsString;
// return timer string
return finalTimerString;
}
protected void initializeAudioSeekBar() {
}
}
