Develop Reference

How to code play stop button on android studio

I need some advice about the code below. I'm trying to create a simple apps that when people click play button, then the music will start playing, and when people click the stop button, the music will stop playing. I'm using a single button for this two task start and stop.
I already test on android simulator, this start and stop button are working properly as I wanted to. But the problem occurred when I build an APK file and play it on a device. The stop button cannot work as I wanted to. If I press the stop button, the music will restart the playing from the beginning.
Any ideas about this problem? Thank you.
btn_playstop.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (btn_playstop.isPressed()) {
if (player.isPlaying()) {
player.stop();
try {
player.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
player.seekTo(0);
btn_playstop.setBackgroundResource(R.drawable.play);
}
else {
player.start();
btn_playstop.setBackgroundResource(R.drawable.stop);
}
}
}
});

To achieve the play/stop button, do it this way.
btn_playstop.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (player != null && player.isPlaying()) {
player.stop();
player.release();
player = null;
try {
player.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
player.seekTo(0); //<---- This is to resume the player from a specified position. It is helpful for a pause button. You can remove it for a stop button.
btn_playstop.setBackgroundResource(R.drawable.play);
}
else {
player.start();
btn_playstop.setBackgroundResource(R.drawable.stop);
}
}
});
You don't have to call the seekTo(Length) method for a stop button as it is meant for resuming the player from a specified position. Also if (btn_playstop.isPressed()) is unnecessary as you have already called the button using setOnClickListener.

imabutton=findViewById(R.id.imgbutton);
imabutton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (imabutton.getTag().toString().contains("not_playing")){
if (mediaPlayer!=null)mediaPlayer.release();
mediaPlayer=MediaPlayer.create(MainActivity.this,R.raw.music1);
mediaPlayer.start();
imabutton.setImageResource(R.drawable.stop);
imabutton.setTag("playing");
mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mediaPlayer) {
imabutton.setTag("not_playing");
imabutton.setImageResource(R.drawable.play);
}
});
}else {
mediaPlayer.release();
imabutton.setImageResource(R.drawable.play);
imabutton.setTag("not_playing");
}
}
});

one button music play/stop with playing in startup of activity android

I have an app with one button for play/stop music . when I run the app , music stops in start up of that . But I want when I run the app that music plays automatically and if I click the button , music stops . I searched the site but I cant find the answer .Please help me my friends.
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test2);
mainkan=(ImageButton)findViewById(R.id.imageButton1);
mainkan.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v){
go();
}
});
public void go(){
mp=MediaPlayer.create(ProjectisengActivity.this, R.raw.test);
if(mp.isPlaying()){
mp.stop();
try {
mp.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mp.seekTo(0);

You can follow this:
if (mp == null) {
mp = MediaPlayer.create(ProjectisengActivity.this, R.raw.test);
}
if (mp.isPlaying()) {
mp.pause();
} else {
mp.start();
}

you can use toggle button like below
ToggleButton toggle = (ToggleButton) findViewById(R.id.togglebutton);
toggle.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
// The toggle is enabled
} else {
// The toggle is disabled
}
}
});

Call go() method in your activity oncreate method.
Its play automatically on activity start when you button clicked its again call the same method so the condition is palying so its stopped.
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test2);
mainkan=(ImageButton)findViewById(R.id.imageButton1);
go();
mainkan.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v){
go();
}
});
public void go(){
mp=MediaPlayer.create(ProjectisengActivity.this, R.raw.test);
if(mp.isPlaying()){
mp.stop();
try {
mp.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mp.seekTo(0);

Issues with replaying music in Android Media Player

To start off, playing and stopping music works fine. I've already searched SX, and have tried some of the solutions listed for this issue, but they haven't resolved my issue.
I have a "Replay Music" button, that is supposed to restart an .mp3 file from the beginning. I've got the necessary code in place (like reset(), prepare(), etc, in order for the media player to replay the music, but when the button is pushed, nothing happens.
I have all the OnClickListeners and other necessary things setup, it is just this one issue.
Below is the complete code for my "Replay Music" method. Any help will be gratefully received.
Just a thought: Perhaps it is something to do with the placement of the mediaPlayer.start() method call?
public void replaySoundButtonListener() {
Button testButton = (Button) findViewById(R.id.replayMusicButton);
testButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
mediaPlayer.reset();
try {
mediaPlayer.setDataSource("sdcard/InsomniMusic/insomnimix.mp3");
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
mediaPlayer.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mediaPlayer.start();
}
});
}

You only need to prepare and set the data source of a mediaplayer once. When you call reset the mediaplayer has to be reinitialised completely (set datasource again and call prepare). If you would like to reset the mediaplayer to the start of the song I guess you could use
mediaPlayer.setOnSeekCompleteListener(new MediaPlayer.OnSeekCompleteListener() {
#Override
public void onSeekComplete(MediaPlayer mediaPlayer) {
mediaPlayer.start();
}
});
If the song has already ended (or stopped otherwise), only mediaPlayer.start() will suffice (but I guess in your case you can never be sure of that).
More information on the start function here

I made a functions to start() stop() reset() and pause() in another Class
import android.content.Context;
import android.media.MediaPlayer;
public class AudioPlayer extends MediaPlayer {
private MediaPlayer mPlayer;
public void stop()
{
if(mPlayer!=null)
{
mPlayer.release();
mPlayer=null;
}
}
public void pause()
{
if(mPlayer.isPlaying()) {
mPlayer.pause();
}
else
{
mPlayer.start();
}
}
public void reset(Context c)
{
stop();
mPlayer=MediaPlayer.create(c, R.raw.one_small_step); //uzimamo .create(context,..) jer uzimamo iz res/raw lokalne datoteke
mPlayer.setOnCompletionListener(new OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mp) {
stop();
}
});
mPlayer.start();
}
public void play(Context c)
{
stop();
mPlayer=MediaPlayer.create(c, R.raw.one_small_step);
mPlayer.setOnCompletionListener(new OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mp) {
stop();
}
});
mPlayer.start();
}
}
//Here is my fragment
private Button mPlayButton;
private Button mStopButton;
private Button mPauseButton;
private Button mResetButton;
private AudioPlayer mPlayer=new AudioPlayer();
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v=getActivity().getLayoutInflater().inflate(R.layout.fragment_hello_moon, container);
mPlayButton=(Button)v.findViewById(R.id.hellomoon_playButton);
mPlayButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
mPlayer.play(getActivity());
}
});
mStopButton=(Button)v.findViewById(R.id.hellomoon_stopButton);
mStopButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
mPlayer.stop();
}
});
mPauseButton=(Button)v.findViewById(R.id.hellomoon_pauseButton);
mPauseButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
mPlayer.pause();
}
});
mResetButton=(Button)v.findViewById(R.id.hellomoon_resetButton);
mResetButton.setOnClickListener(new OnClickListener(
) {
#Override
public void onClick(View v) {
mPlayer.reset(getActivity());
}
});
return v;
}
#Override
public void onDestroy() {
super.onDestroy();
mPlayer.stop(); //Nakon sto je fragment unisten MediaPlayer nastavlja radit jer je na drugacijem Threadu pa treba pozvati Stop();
}

Play and Stop in One button

i'm newbie, i'm tried to make play audio play and stop for 1 button only, but i'm in trouble now.
if i touch a button when audio is playing, it doesn't stop, even playing audio again and make a double sound.
here's my code
public class ProjectisengActivity extends Activity{
ImageButton mainkan;
MediaPlayer mp;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test2);
mainkan=(ImageButton)findViewById(R.id.imageButton1);
mainkan.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v){
go();
}
});
public void go(){
mp=MediaPlayer.create(ProjectisengActivity.this, R.raw.test);
if(mp.isPlaying()){
mp.stop();
try {
mp.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mp.seekTo(0);
}
else {
mp.start();
}
i'm create for android 3.0 (HoneyComb)

try below code in go function....
public void go() {
if(mp == null) {
mp=MediaPlayer.create(ProjectisengActivity.this, R.raw.test);
}
if(mp.isPlaying()){
mp.stop();
try {
mp.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mp.seekTo(0);
}
else {
mp.start();
}
}

It is simple, you should follow these steps to achieve this.
In your test2.xml create two buttons name start and stop.
Set the android:visibility attribute gone of stop button in xml file.
Now in your activity get the id of these two buttons and write the code for
starting and stopping of media player.
Set the visibility attribute gone on start click and visible of stop button,
follow its opposite on stop click.

I think you have wrong this line :
mp=MediaPlayer.create(ProjectisengActivity.this, R.raw.test);
You create new instance every time user clicks the button, so it's never playing and starts again. Put this line into onCreate rather than go()

Try also this,
public class MainActivity extends Activity {
MediaPlayer mPlayer;
int flag = 0;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button mButton = (Button) findViewById(R.id.button1);
mButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
if (flag == 0) {
Log.v("Inside if", "Success" + "");
mPlayer = MediaPlayer.create(getApplicationContext(),
R.raw.sample);
mPlayer.start();
flag++;
} else {
Log.v("Inside else", "Success" + "");
mPlayer.stop();
mPlayer.release();
flag = 0;
}
}
});
}
}

When seekBar updating Android's MediaPlayer video is not smooth

I'm playing video via MediPlayer in my android application and have SeekBar displayed. Now I want this seeks bar to automatically update as the video progresses so it should automatically move from left to right. At the moment, (code below) the bar updates and this is done via running thread, that every second updates the progress of seekBar. The problem is it is not smooth and as seekBar is updated via its seekProgress() the video stops for split second and all is very jumpy. Now I would like it to have updated more often then every second as well as keep functionality that I already implemented to allow user to tap on the bar and change progress of the video.
I'm after something like Android MediaPLayer application have, seekBar is on transparent background and all is smooth and I have no idea how it is done.
No, currently as you see from the code below thread updates every second as it sleeps inside f run method. I've also tried to use handlers to update UI thread, effect was the same. I also extended SeekBar to its own class, had thread there and this was no good either, exactly same effect.
If anyone can explain to me how to solve this problem and how its done with other player appls that would be great.
public class FightPlayerActivity extends Activity implements Runnable, OnSeekBarChangeListener, SurfaceHolder.Callback, OnPreparedListener {
private MediaPlayer mp=null;
private SeekBar seekBar;
private Thread progressBarUpdater;
private String filePath;
private Handler handler=new Handler();
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
Toast.makeText(this,"Create ", 2000).show();
}
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
// TODO Auto-generated method stub
}
public void onStop()
{
super.onStop();
mp.stop();
mp.reset();
mp.release();
}
public void run()
{
while(true)
{
try {
progressBarUpdater.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
seekBar.setProgress(mp.getCurrentPosition());
// handler does have same effect, so video stops for split second
//handler.postDelayed(this, 1000);
}
}
public void onStart()
{
super.onStart();
setContentView(R.layout.fight_player);
filePath=getIntent().getStringExtra("filename");
filePath=Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM)+"/FightAll_BJJ_Scoring/"+filePath;
Toast.makeText(this,filePath, 2000).show();
// seek bar
seekBar=(SeekBar) findViewById(R.id.seek_bar);
seekBar.setOnSeekBarChangeListener(this);
try {
SurfaceView sv=(SurfaceView) findViewById(id.video_preview);
SurfaceHolder sh=sv.getHolder();
sh.addCallback(this);
sh.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void stop(View view)
{
mp.seekTo(0);
mp.pause();
}
public void pause(View view)
{
mp.pause();
}
public void play(View view)
{
mp.start();
}
public void surfaceCreated(SurfaceHolder holder) {
try {
mp=new MediaPlayer();
mp.setDataSource(filePath);
mp.setDisplay(holder);
mp.setOnPreparedListener(this);
mp.setAudioStreamType(AudioManager.STREAM_MUSIC);
mp.prepare();
//handler.removeCallbacks(this);
//handler.postDelayed(this, 1000);
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub
}
public void onPrepared(MediaPlayer mediaplayer) {
mp.start();
seekBar.setMax(mp.getDuration());
progressBarUpdater=new Thread(this);
progressBarUpdater.start();
//handler.postDelayed(this, 1000);
}
public void onProgressChanged(SeekBar sb,int progress,boolean fromUser)
{
//Toast.makeText(this, progress, 2000).show();
mp.seekTo(progress);
}
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
onProgressChanged(seekBar,seekBar.getProgress(),true);
}
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
}

Your major problem is in your onProgressChanged() method.
You are seeking to the specified position every time the seekBar progress changes, even when it is done programmatically. Which means that every time you call seekBar.setProgress(mp.getCurrentPosition()), onProgressChanged() will be fired.
So we change it to the following:
public void onProgressChanged(SeekBar sb, int progress, boolean fromUser) {
if (fromUser) {
mp.seekTo(progress);
}
}
That way it will only be fired when the user moves the seekBar.
Moreover, according to this answer, it would be better to replace your while(true) loop with:
public void run() {
seekBar.setProgress(mp.getCurrentPosition());
if (mp.getCurrentPosition() < mp.getDuration()) {
seekBar.postDelayed(this, MILLISECONDS);
}
}