thread executing before

thread executing before - android

i have a little bit of a problem here when calling a new thread.
I am making a audio recording app and i call the recording/playback in separate threads.
There is a button to start the recording. I am trying to update the button with new text via a handler.post object and method.
The problem is it takes too long to update. The text doesnt update till after the thread(s) run +5 secs longer.
can someone help me? please?
package com.EJH.Industries.microkr;
import android.media.AudioFormat;
import android.media.AudioManager;
import android.media.AudioRecord;
import android.media.AudioTrack;
import android.media.MediaRecorder;
import android.media.MediaSyncEvent;
import android.os.Bundle;
import android.os.Handler;
import android.app.Activity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
import android.support.v4.app.NavUtils;
public class MainActivity extends Activity {
//CLASS VARIABLES
//CHAR SEQUENCE
CharSequence easyChar = "PLAYING";
public Handler textViewHandler = new Handler();
//CREATE THE RECORDING OBJECT
int audioSrc = MediaRecorder.AudioSource.MIC;
int sampleRate = 44100;
int chanConfig = AudioFormat.CHANNEL_IN_MONO;
int audioFormat = AudioFormat.ENCODING_PCM_16BIT;
int getMinBuffSize = 200*AudioRecord.getMinBufferSize(sampleRate, chanConfig, audioFormat);
int minBuffSize = (int) getMinBuffSize;
short audioBuff[] = new short[minBuffSize];
public AudioRecord micRecorder = new AudioRecord(audioSrc, 22050, chanConfig, audioFormat, minBuffSize);
//CREATE THE PLAYBACK OBJECT
int streamType = AudioManager.STREAM_MUSIC;
int playMode = AudioTrack.MODE_STREAM;
int playChanConfig = AudioFormat. CHANNEL_OUT_MONO;
public AudioTrack speakerPlay = new AudioTrack(streamType, sampleRate, playChanConfig, audioFormat, 8192, playMode);
public void startRec(){
micRecorder.startRecording();
micRecorder.read(audioBuff, 0, minBuffSize);
micRecorder.stop();
micRecorder.release();
}
public void startPlayback(){
speakerPlay.play();
speakerPlay.write(audioBuff, 0, minBuffSize);
speakerPlay.stop();
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final Button startBtn = (Button) findViewById(R.id.startButton);
startBtn.setOnClickListener(new OnClickListener(){
public void onClick(View v) {
// TODO Auto-generated method stub
Thread recThread = new Thread( new Runnable(){
public void run() {
// TODO Auto-generated method stub
textViewHandler.post(new Runnable () {
public void run(){
startBtn.setText("Recording!");
}
});
startRec();
}
});
// RUN RECORDING FUNCTION
recThread.run();
try {
recThread.join();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Thread playThread = new Thread( new Runnable(){
public void run() {
// TODO Auto-generated method stub
startPlayback();
}
});
playThread.run();
try {
playThread.join();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
///////END onCreate//////////
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}

I think so it is because you are calling startRec() first and then running the recThread..try to modify your code as below..that is remove your startRec() function from above recThread.run() line and add it after try catch..hope it helped you..
Thread recThread = new Thread( new Runnable(){
public void run() {
// TODO Auto-generated method stub
textViewHandler.post(new Runnable () {
public void run(){
startBtn.setText("Recording!");
}
});
//remove it from here..
// startRec();
}
});
// RUN RECORDING FUNCTION
recThread.run();
try {
recThread.join();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//add here..
startRec();

Related

Starting new Thread freezes UI

I am working on an app that implements a Web Socket server. I am referring this library - https://github.com/TooTallNate/Java-WebSocket
The problem is that the thread holds up the entire UI. Here is the code -
package com.example.websocket;
import java.net.InetSocketAddress;
import java.net.UnknownHostException;
import java.util.Collections;
import java.nio.ByteBuffer;
import org.java_websocket.WebSocket;
import org.java_websocket.drafts.Draft;
import org.java_websocket.drafts.Draft_17;
import org.java_websocket.framing.FrameBuilder;
import org.java_websocket.framing.Framedata;
import org.java_websocket.handshake.ClientHandshake;
import org.java_websocket.server.WebSocketServer;
import android.os.Bundle;
import android.provider.Settings.Global;
import android.app.Activity;
import android.content.Context;
import android.view.Menu;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
EditText port, msg;
Button listener, send;
TextView status;
int p;
int count = 0;
boolean connect = false;
boolean listen = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
msg = (EditText)findViewById(R.id.editText2);
listener = (Button)findViewById(R.id.button1);
send = (Button)findViewById(R.id.button2);
status = (TextView)findViewById(R.id.textView1);
listener.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Thread t = new Thread(new Runnable() {
#Override
public void run() {
try {
SimpleServer server = new SimpleServer();
server.start();
status.setText("Working inside Thread");
} catch (UnknownHostException e) {
e.printStackTrace();
}
}
});
t.start();
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public class SimpleServer extends WebSocketServer {
public SimpleServer() throws UnknownHostException {
super(new InetSocketAddress(9998));
// TODO Auto-generated constructor stub
}
#Override
public void onClose(WebSocket arg0, int arg1, String arg2, boolean arg3) {
// TODO Auto-generated method stub
}
#Override
public void onError(WebSocket arg0, Exception arg1) {
// TODO Auto-generated method stub
}
#Override
public void onMessage(WebSocket arg0, String arg1) {
// TODO Auto-generated method stub
}
#Override
public void onOpen(WebSocket arg0, ClientHandshake arg1) {
status.setText("Working");
}
}
}

You cannot update ui from other threads:
status.setText("Working inside Thread");
use runOnUiThread method of activity
runOnUiThread(new Runnable() {
#Override
public void run() {
status.setText("Working inside Thread");
}
});
By the way youre code cause memory leack and crashes. You cannot start long living operations in activity context. You should run service ,or make this thread in application context, results to ui you can pass by using EventBus.

Streaming Audio Android app doesn't works on Galaxy S4

I've created an app (radio streaming) but doesn't works on S4.
I've tested this app on my Galaxy Nexus, Xperia Arc s, Htc Desire and it works properly.
I think there is an error in my code.
My code:
package com.dieesoft.radiolluvia;
import java.io.IOException;
import android.R.array;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnPreparedListener;
import android.media.MediaPlayer.TrackInfo;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.app.ProgressDialog;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ProgressBar;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener {
private MediaPlayer mp;
private ProgressDialog pb;
private Button bplay;
private Button bstop;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
bplay = (Button) findViewById(R.id.button1);
bstop = (Button) findViewById(R.id.button2);
mp = new MediaPlayer();
mp.setAudioStreamType(AudioManager.STREAM_MUSIC);
bplay.setOnClickListener(this);
bstop.setOnClickListener(this);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(v.getId() == R.id.button1 )
{
//button play
new iniciarStreaming().execute();
Toast.makeText(this, "Play", Toast.LENGTH_SHORT).show();
}
else if(v.getId() == R.id.button2)
{
//button stop
Toast.makeText(this, "Stop", Toast.LENGTH_SHORT).show();
mp.stop();
}
}
private class iniciarStreaming extends AsyncTask<Void, Void, Boolean> implements OnPreparedListener
{
#Override
protected Boolean doInBackground(Void... params) {
// TODO Auto-generated method stub
try {
mp.setDataSource("http://makrodigital.com:8134/radiolluvia");
} 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();
}
mp.prepareAsync();
mp.setOnPreparedListener(this);
return null;
}
protected void onPreExecute() {
// TODO Auto-generated method stub
pb = new ProgressDialog(MainActivity.this);
pb.setMessage("Buffering...");
pb.show();
}
#Override
public void onPrepared(MediaPlayer mp) {
// TODO Auto-generated method stub
if (pb.isShowing()) {
pb.cancel();
}
mp.start();
}
}

Your streaming url (http://makrodigital.com:8134/radiolluvia) has AAC format with content-type: audio/aacp.
But audio/aacp streaming is not supported directly. Maybe previously was another link? MP3 or something else?
For playing this url you can use this library:
http://code.google.com/p/aacplayer-android/

Latency in playing a .wav/.mp3/.ogg audio file in Android App

I'd written an application for playing 20 millisecond audio clip(.wav format).
It simply plays the sound clip repeatedly 1000 times.
But due to Latency, number of times it plays lies between 978 and 984. I'd also tried other audio format(.ogg, .mp3, etc).
I want reduce the latency and also to get reliable number.
I'm sharing my code below:
package com.abhinav.soundlooper;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.app.Activity;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends Activity implements OnClickListener {
Button btnStart;
TextView tvPause, tvLoop;
EditText etPause, etLoop;
long pause, loop;
private CountDownTimer timer;
MediaPlayer mp;
public Thread t;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnStart = (Button) findViewById(R.id.btnStart);
// tvLoop = (TextView) findViewById(R.id.etLoop)
etPause = (EditText) findViewById(R.id.etPause);
etLoop = (EditText) findViewById(R.id.etLoop);
btnStart.setOnClickListener(this);
mp = MediaPlayer.create(getApplicationContext(), R.raw.beepwav);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
finish();
return true;
}
return super.onKeyDown(keyCode, event);
}
#Override
public void onClick(final View v) {
// TODO Auto-generated method stub
// pause = Integer.valueOf(etPause.getText().toString()) + 1 ;
// loop = 1 + Integer.valueOf(etLoop.getText().toString());
// long ti = (pause+30);
// long tt = ti*loop;
timer = new CountDownTimer(30000, 30) {
int i =0;
public void onTick(long millisUntilFinished) {
// v.playSoundEffect(android.view.SoundEffectConstants.CLICK);
mp.start();
// try {
// timer.wait(10);
// } catch (InterruptedException e) {
// // TODO Auto-generated catch block
// e.printStackTrace();
// }
i++;
}
public void onFinish() {
// mTextField.setText("done!");
Log.i("loop", ""+i);
stopAll();
// mp.stop();
// mp.release();
}
}.start();
//
}
protected void stopAll() {
// TODO Auto-generated method stub
timer.cancel();
}
}

I'm not sure but if 1000 milliseconds is 1 second. So 30,000 milliesconds is 30 seconds.
and if the audio is 20 milliseconds then 30,000/20 is 1,500. So the audio is capable of being played 1.5K in 30 seconds.
timer = new CountDownTimer(30000, 27) {
int i =0;
public void onTick(long millisUntilFinished) {
// v.playSoundEffect(android.view.SoundEffectConstants.CLICK);
mp.start();
// try {
// timer.wait(10);
// } catch (InterruptedException e) {
// // TODO Auto-generated catch block
// e.printStackTrace();
// }
i++;
}
if with the 30 latency it's 950 times, what happens if we lower the latency to about 27?
and you can always you if statement ..
if (i == 1000){
stopAll();
} else {
i++
}

MediaPlayer: start called in state 0 error

This is what the code looks like, logcat keeps stating "start called in state 0"
I tried different ways to start the video. What am I missing? I also tried a OnPreparedListener but it kept giving me the same errors.
package com.example.videoplaybacktests;
import java.io.IOException;
import android.app.Activity;
import android.content.Context;
import android.graphics.PixelFormat;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnPreparedListener;
import android.net.Uri;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
public class MainActivity extends Activity implements SurfaceHolder.Callback{
MediaPlayer mediaPlayer;
SurfaceView surfaceView;
SurfaceHolder surfaceHolder;
boolean pausing = false;;
String stringPath = "/drawable/visource.mp4";
public String RTSP = "rtsp://v2.cache7.c.youtube.com/CjYLENy73wIaLQkFPOlBtC4qExMYDSANFEIJbXYtZ29vZ2xlSARSBXdhdGNoYJeOw_HjwJ6bUQw=/0/0/0/video.3gp";
public Uri vidURI = Uri.parse(RTSP);
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button buttonPlayVideo = (Button)findViewById(R.id.playvideoplayer);
Button buttonPauseVideo = (Button)findViewById(R.id.pausevideoplayer);
getWindow().setFormat(PixelFormat.UNKNOWN);
surfaceView = (SurfaceView)findViewById(R.id.surfaceview);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setFixedSize(176, 144);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
mediaPlayer = new MediaPlayer();
buttonPlayVideo.setOnClickListener(new Button.OnClickListener(){
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
pausing = false;
if(mediaPlayer.isPlaying()){
mediaPlayer.reset();
}
mediaPlayer.setDisplay(surfaceHolder);
try {
mediaPlayer.setDataSource(RTSP);
mediaPlayer.prepare();
} catch (IllegalArgumentException 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();
}
mediaPlayer.start();
}});
buttonPauseVideo.setOnClickListener(new Button.OnClickListener(){
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(pausing){
pausing = false;
mediaPlayer.start();
}
else{
pausing = true;
mediaPlayer.pause();
}
}});
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
// TODO Auto-generated method stub
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
// TODO Auto-generated method stub
}
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub
}
}

You can not call start without the mediaPlayer being prepared! Thats the reason you get the error
Use prepareAsync instead
try {
mediaPlayer.setDataSource(RTSP);
mediaPlayer.prepareAsync();
} catch (IllegalArgumentException 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();
}
and start playback on onPrepared():
public void onPrepared(MediaPlayer mp) {
mediaPlayer.start();
}
If it still doesnt start on onVideoSizeChanged
public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
mediaPlayer.start();
}

package com.example.videoplaybacktests;
import java.io.IOException;
import android.app.Activity;
import android.content.Context;
import android.graphics.PixelFormat;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnPreparedListener;
import android.net.Uri;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
public class MainActivity extends Activity implements SurfaceHolder.Callback{
MediaPlayer mediaPlayer;
SurfaceView surfaceView;
SurfaceHolder surfaceHolder;
boolean pausing = false;;
String stringPath = "/drawable/visource.mp4";
public String RTSP = "rtsp://v2.cache7.c.youtube.com/CjYLENy73wIaLQkFPOlBtC4qExMYDSANFEIJbXYtZ29vZ2xlSARSBXdhdGNoYJeOw_HjwJ6bUQw=/0/0/0/video.3gp";
public Uri vidURI = Uri.parse(RTSP);
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button buttonPlayVideo = (Button)findViewById(R.id.playvideoplayer);
Button buttonPauseVideo = (Button)findViewById(R.id.pausevideoplayer);
getWindow().setFormat(PixelFormat.UNKNOWN);
surfaceView = (SurfaceView)findViewById(R.id.surfaceview);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setFixedSize(176, 144);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
mediaPlayer = new MediaPlayer();
buttonPlayVideo.setOnClickListener(new Button.OnClickListener(){
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(mediaPlayer.isPlaying()){
mediaPlayer.stop();
}
mediaPlayer.setDisplay(surfaceHolder);
try {
mediaPlayer.setDataSource(RTSP);
mediaPlayer.prepare();
} catch (IllegalArgumentException 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();
}
}});
buttonPauseVideo.setOnClickListener(new Button.OnClickListener(){
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(mediaPlayer==null)
return;
else if(mediaPlayer.isPlaying()){
mediaPlayer.stop();
}else{
mediaPlayer.start();
}
}});
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
// TODO Auto-generated method stub
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
// TODO Auto-generated method stub
mediaPlayer.start();
}
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub
}
}

cant call function from inside thread or asyntask

I am using a thread and a handler in android. The app works fine as long as i dont any function from outside the activity. But if i call some funcyion from outside the activity from inside a thread, it gives NullPointerException.
package com.prog;
import com.API.TextBoxCheck;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class ProgressBarExample extends Activity {
private Handler handler = new Handler();
int i;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button btn=(Button)findViewById(R.id.button1);
btn.setOnClickListener(new OnClickListener(){
TextView tv=(TextView)findViewById(R.id.textView1);
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Thread thread = new Thread(null, doBackgroundThreadProcessing,
"Background");
thread.start();
}});
Button stopBtn=(Button)findViewById(R.id.button2);
stopBtn.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
finish();
}});
}
private Runnable doBackgroundThreadProcessing = new Runnable() {
public void run() {
try {
backgroundThreadProcessing();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
private void backgroundThreadProcessing() throws InterruptedException {
TextView tv=(TextView)findViewById(R.id.textView1);
i=0;
while(i<100)
{
handler.post(doUpdateGUI);
Thread.sleep(50);
i++;
}
EditText et=(EditText)findViewById(R.id.editText1);
TextBoxCheck tbc = new com.API.TextBoxCheck();
String reply=tbc.TextBoxChecker(et.getText().toString(),10);
Log.d("thread", reply);
}
private Runnable doUpdateGUI = new Runnable() {
public void run() {
updateGUI();
}
private void updateGUI() {
// TODO Auto-generated method stub
TextView tv=(TextView)findViewById(R.id.textView1);
tv.setText(i+"%");
}
};
}
I have left out the code of textBoxCheck becoz i think it may be unnecesarry here.
Please help me on this.
PS. : I also tried using AsyncTask but the same problem occurs.

You are not on UI thread. You must be on UI thread to operate on any UI items. Create a handler on the UI thread and call your backgroundThreadProcessing(); from the handler and not from a non-UI thread.

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

thread executing before - android

Related

Starting new Thread freezes UI

Streaming Audio Android app doesn't works on Galaxy S4

Latency in playing a .wav/.mp3/.ogg audio file in Android App

MediaPlayer: start called in state 0 error

cant call function from inside thread or asyntask

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