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How to increase speed of BLE scanning Android Studio?

I want make some application, it will scanning nearby BLE and sending to server via MQTT. But the scanning proccess to slow. I want to increase the speed of scanning.
mainActivity.java
package com.example.mqtt_active;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import android.Manifest;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import org.eclipse.paho.android.service.MqttAndroidClient;
import org.eclipse.paho.client.mqttv3.IMqttActionListener;
import org.eclipse.paho.client.mqttv3.IMqttToken;
import org.eclipse.paho.client.mqttv3.MqttException;
import java.nio.charset.StandardCharsets;
public class MainActivity extends AppCompatActivity {
private Button turnon, changeLayout;
MqttAndroidClient client;
private boolean state=false;
private BluetoothAdapter bluetoothAdapter;
public static final int REQUEST_ACCESS_COARSE_LOCATION = 1;
public static final int REQUEST_ENABLE_BLUETOOTH = 11;
public static String mqtt_server,mqtt_port,mqtt_id;
private TextView textView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getSupportActionBar().hide();
setContentView(R.layout.activity_main);
turnon = findViewById(R.id.turnon);
changeLayout = findViewById(R.id.mqttSet);
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
textView = findViewById(R.id.textView4);
textView.setText("id "+mqtt_id+" port "+mqtt_port+" server "+mqtt_server);
client = new MqttAndroidClient(this.getApplicationContext(), "tcp://"+mqtt_server+":"+mqtt_port,mqtt_id);
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
stateCheck();
handler.postDelayed(this, 1000);
}
}, 1000);
final Handler handlerStop = new Handler();
handlerStop.postDelayed(new Runnable() {
#Override
public void run() {
bluetoothAdapter.cancelDiscovery();
handlerStop.postDelayed(this, 2000);
}
}, 2000);
turnon.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (!state){
turnon.setText("Turn Off");
// if (bluetoothAdapter!=null & bluetoothAdapter.isEnabled()) {
// if(checkCoarsePermission()){
// bluetoothAdapter.startDiscovery();
// }
// }
if(mqtt_server!=null||mqtt_id!=null||mqtt_port!=null){
try {
IMqttToken token = client.connect();
token.setActionCallback(new IMqttActionListener() {
#Override
public void onSuccess(IMqttToken asyncActionToken) {
Toast.makeText(MainActivity.this,"connected!!",Toast.LENGTH_LONG).show();
}
#Override
public void onFailure(IMqttToken asyncActionToken, Throwable exception) {
Toast.makeText(MainActivity.this,"connection failed!!",Toast.LENGTH_LONG).show();
}
});
} catch (MqttException e) {
e.printStackTrace();
}}
state = true;
}else{
turnon.setText("Turn On");
state = false;
// bluetoothAdapter.cancelDiscovery();
}
}
});
changeLayout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startActivity(new Intent(MainActivity.this,MqttActivity.class));
}
});
}
public void stateCheck(){
if (state){
if (bluetoothAdapter!=null & bluetoothAdapter.isEnabled()) {
if(checkCoarsePermission()){
bluetoothAdapter.startDiscovery();
}
}
}else {
bluetoothAdapter.cancelDiscovery();
}
}
private boolean checkCoarsePermission(){
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION)
!= PackageManager.PERMISSION_GRANTED){
ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.ACCESS_COARSE_LOCATION},
REQUEST_ACCESS_COARSE_LOCATION);
return false;
}else {
return true;
}
}
#Override
protected void onResume() {
super.onResume();
registerReceiver(devicesFoundReceiver, new IntentFilter(BluetoothDevice.ACTION_FOUND));
registerReceiver(devicesFoundReceiver, new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_STARTED));
registerReceiver(devicesFoundReceiver, new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED));
}
#Override
protected void onPause() {
super.onPause();
unregisterReceiver(devicesFoundReceiver);
}
private final BroadcastReceiver devicesFoundReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
String action= intent.getAction();
if(BluetoothDevice.ACTION_FOUND.equals(action)){
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
int rssi = intent.getShortExtra(BluetoothDevice.EXTRA_RSSI,Short.MIN_VALUE);
String RSSI = String.valueOf(rssi);
Toast.makeText(context.getApplicationContext(),"rssi "+RSSI+" "+device.getAddress(),Toast.LENGTH_SHORT).show();
if(mqtt_server!=null||mqtt_id!=null||mqtt_port!=null){
try {
String payload = "rssi:"+RSSI+"mac:"+device.getAddress();
client.publish("test",payload.getBytes(),0,false);
} catch ( MqttException e) {
e.printStackTrace();
}}
}else if(BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)){
}else if(BluetoothAdapter.ACTION_DISCOVERY_STARTED.equals(action)){
}
}
};
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode){
case REQUEST_ACCESS_COARSE_LOCATION:
if(grantResults.length>0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
Toast.makeText(this,"ALLOWED", Toast.LENGTH_SHORT).show();
}else {
Toast.makeText(this,"Forbidden",Toast.LENGTH_SHORT).show();
} break;
}
}
}
mqttActivity.java
package com.example.mqtt_active;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
public class MqttActivity extends AppCompatActivity {
private EditText server,port,id;
private Button save;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mqtt);
server = findViewById(R.id.serverMQTT);
id = findViewById(R.id.mqttTopic);
port = findViewById(R.id.mqttPort);
save = findViewById(R.id.saveButton);
save.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
MainActivity.mqtt_id = id.getText().toString();
MainActivity.mqtt_port = port.getText().toString();
MainActivity.mqtt_server = server.getText().toString();
startActivity(new Intent(MqttActivity.this,MainActivity.class));
}
});
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<Button
android:id="#+id/turnon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Turn On"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.452" />
<Button
android:id="#+id/mqttSet"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Set MQTT"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.511"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/turnon"
app:layout_constraintVertical_bias="0.073" />
<TextView
android:id="#+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="52dp"
android:text="TextView"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.524"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/mqttSet"
app:layout_constraintVertical_bias="0.0" />
</androidx.constraintlayout.widget.ConstraintLayout>
activity_mqtt.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:id="#+id/serverMQTT"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="textPersonName"
android:text="Server"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.497"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView" />
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="60dp"
android:text="MQTT SERVER"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="24dp"
android:text="MQTT TOPIC"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.498"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/serverMQTT" />
<EditText
android:id="#+id/mqttTopic"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="textPersonName"
android:text="Topic"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView2" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="24dp"
android:text="MQTT PORT"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/mqttTopic" />
<EditText
android:id="#+id/mqttPort"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="textPersonName"
android:text="Port"
app:layout_constraintBottom_toTopOf="#+id/saveButton"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.497"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView3"
app:layout_constraintVertical_bias="0.0" />
<Button
android:id="#+id/saveButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Save"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.498"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/textView3"
app:layout_constraintVertical_bias="0.298" />
</androidx.constraintlayout.widget.ConstraintLayout>
How to increase speed of scanning nearby BLE? i expect from this forum, i can increase speed of scanning nearby BLE.

Problem in translation display in translation app on android studio

Hello eveyone i hope you are all doing good. I have a little problem and I couldn't find the solution. I have a translation app and after the user input his phrase by a record, the translation message doesn't appear. So I hope that someone could help me.
Here is my xml file:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<EditText
android:id="#+id/edittext"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:hint="Tap Mic to Speak"
android:padding="20dp"
android:textColor="#000000"
android:textSize="20sp" />
<Button
android:id="#+id/idBtnTranslateLanguage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/TransledText"
android:layout_centerInParent="true"
android:text="Translate language" />
<ImageButton
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/edittext"
android:layout_centerHorizontal="true"
android:layout_marginTop="128dp"
android:background="#color/white"
android:padding="40dp"
android:src="#drawable/ic_baseline_mic_24" />
<TextView
android:id="#+id/TransledText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/edittext"
android:layout_centerHorizontal="true"
android:layout_margin="20dp"
android:gravity="center_horizontal"
android:text="Translated language"
android:textAlignment="center"
android:textSize="20sp"
tools:ignore="UnknownId" />
</RelativeLayout>
And my main code:
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.os.Bundle;
import android.speech.RecognizerIntent;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.Locale;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.firebase.ml.common.modeldownload.FirebaseModelDownloadConditions;
import com.google.firebase.ml.naturallanguage.FirebaseNaturalLanguage;
import com.google.firebase.ml.naturallanguage.translate.FirebaseTranslateLanguage;
import com.google.firebase.ml.naturallanguage.translate.FirebaseTranslator;
import com.google.firebase.ml.naturallanguage.translate.FirebaseTranslatorOptions;
public class MainActivity extends AppCompatActivity {
private static final int CodeSpeechInput =100;
private TextView EditText;
private ImageButton SpeakButton;
private TextView TransledText;
FirebaseTranslator englishFrenshTranslator;
private Button translateLanguageBtn;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
FirebaseTranslatorOptions options =
new FirebaseTranslatorOptions.Builder()
.setSourceLanguage(FirebaseTranslateLanguage.EN)
.setTargetLanguage(FirebaseTranslateLanguage.FR)
.build();
englishFrenshTranslator = FirebaseNaturalLanguage.getInstance().getTranslator(options);
EditText = (TextView) findViewById(R.id.edittext);
SpeakButton = (ImageButton) findViewById(R.id.button);
TransledText = (TextView) findViewById(R.id.TransledText);
translateLanguageBtn = findViewById(R.id.idBtnTranslateLanguage);
translateLanguageBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String string = EditText.getText().toString();
downloadModal(string);
}
private void downloadModal(String input) {
FirebaseModelDownloadConditions conditions = new FirebaseModelDownloadConditions.Builder().requireWifi().build();
englishFrenshTranslator.downloadModelIfNeeded(conditions).addOnSuccessListener(new OnSuccessListener<Void>() {
#Override
public void onSuccess(Void aVoid) {
// this method is called when modal is downloaded successfully.
Toast.makeText(MainActivity.this, "Please wait language modal is being downloaded.", Toast.LENGTH_SHORT).show();
// calling method to translate our entered text.
translateLanguage(input);
}
}).addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
Toast.makeText(MainActivity.this, "Fail to download modal", Toast.LENGTH_SHORT).show();
}
});
}
private void translateLanguage(String input) {
englishFrenshTranslator.translate(input).addOnSuccessListener(new OnSuccessListener<String>() {
#Override
public void onSuccess(String result) {
TransledText.setText(input);
}
}).addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
Toast.makeText(MainActivity.this, "Fail to translate", Toast.LENGTH_SHORT).show();
}
});
}
});
SpeakButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startVoiceInput();
}
private void startVoiceInput() {
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.getDefault());
try {
startActivityForResult(intent, CodeSpeechInput);
} catch (ActivityNotFoundException a) {
}
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case CodeSpeechInput : {
if (resultCode == RESULT_OK && null != data) {
ArrayList<String> result = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
EditText.setText(result.get(0));
}
break;
}
}
}
}
I also use firebase if that could help you.

Search filter on list view returns wrong result on clicking

Problem
I am creating music player using android studio.
Everything was fine until I added search filter to search songs.
Search filter returns the song right but when I click on searched result wrong music file is opened however the music name shown on player activity is right but the song played is first song of list every time .
Example
There are 4 song items named: A,B,C,D
When searched C ,filtered result C is shown. But when Clicked on it Song name C is shown but Song A is played.
This is really frustrating.
Main Activity.java
package com.example.musicplayer2;
import android.Manifest;
import android.content.Intent;
import android.icu.text.Transliterator;
import android.os.Bundle;
import android.os.Environment;
import android.view.Menu;
import android.view.MenuItem;
import android.view.SearchEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.SearchView;
import android.widget.TextView;
import androidx.appcompat.app.AppCompatActivity;
import com.karumi.dexter.Dexter;
import com.karumi.dexter.PermissionToken;
import com.karumi.dexter.listener.PermissionDeniedResponse;
import com.karumi.dexter.listener.PermissionGrantedResponse;
import com.karumi.dexter.listener.PermissionRequest;
import com.karumi.dexter.listener.single.PermissionListener;
import java.io.File;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
static boolean shuffleBol = false;
static boolean loopBol = false;
ListView listView;
String[] items;
ArrayAdapter<String> myAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = findViewById(R.id.listViewSong);
runtimePermission();
}
public void runtimePermission()
{
Dexter.withContext(this).withPermission(Manifest.permission.READ_EXTERNAL_STORAGE)
.withListener(new PermissionListener() {
#Override
public void onPermissionGranted(PermissionGrantedResponse permissionGrantedResponse) {
displaySongs();
}
#Override
public void onPermissionDenied(PermissionDeniedResponse permissionDeniedResponse) {
}
#Override
public void onPermissionRationaleShouldBeShown(PermissionRequest permissionRequest, PermissionToken permissionToken) {
permissionToken.continuePermissionRequest();
}
}).check();
}
public ArrayList<File> findSong(File file)
{
ArrayList<File> arrayList = new ArrayList<>();
File[] files = file.listFiles();
if (files != null){
for (File singlefile : files)
{
if (singlefile.isDirectory() && !singlefile.isHidden())
{
arrayList.addAll(findSong(singlefile));
}
else
{
if (singlefile.getName().endsWith(".mp3") && !singlefile.getName().startsWith("."))
{
arrayList.add(singlefile);
}
}
}
}
return arrayList;
}
void displaySongs()
{
ArrayList<File> mysongs;
mysongs = findSong(Environment.getExternalStorageDirectory());
items = new String[mysongs.size()];
for (int i=0; i < mysongs.size(); i++)
{
items[i] = mysongs.get(i).getName().replace(".mp3","");
}
// ArrayAdapter<String> myAdapter;
myAdapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1, items);
listView.setAdapter(myAdapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String songName = (String) listView.getItemAtPosition(position);
startActivity(new Intent(getApplicationContext(),PlayerActivity.class)
.putExtra("songs",mysongs)
.putExtra("songname",songName)
.putExtra("position",position));
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu,menu);
MenuItem menuItem = menu.findItem(R.id.search_view);
SearchView searchView = (SearchView) menuItem.getActionView();
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
return false;
}
#Override
public boolean onQueryTextChange(String newText) {
myAdapter.getFilter().filter(newText);
return false;
}
});
return super.onCreateOptionsMenu(menu);
}
}
main activity.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<ListView
android:id="#+id/listViewSong"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:divider="#android:color/transparent"
android:dividerHeight="10.0sp"
android:padding="8dp"
>
</ListView>
</RelativeLayout>
PlayerActivity.java
package com.example.musicplayer2;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;
import org.w3c.dom.Text;
import java.io.File;
import java.util.ArrayList;
import java.util.Random;
import static com.example.musicplayer2.MainActivity.loopBol;
import static com.example.musicplayer2.MainActivity.shuffleBol;
public class PlayerActivity extends AppCompatActivity {
ImageView btnplay,btnnext,btnprev,btnshuffle,btnloop;
TextView txtsname,txtstart,txtstop;
SeekBar seekmusic;
String sname;
public static final String EXTRA_NAME = "song_name";
static MediaPlayer mediaPlayer;
int position;
ArrayList<File> mySongs;
Thread updateseekbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_player);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setTitle("Player");
btnprev = findViewById(R.id.btnprev);
btnnext = findViewById(R.id.btnnext);
btnplay = findViewById(R.id.playbtn);
btnshuffle = findViewById(R.id.btnshuffle);
btnloop = findViewById(R.id.btnloop);
txtsname = findViewById(R.id.txtsn);
txtstart = findViewById(R.id.txtstart);
txtstop = findViewById(R.id.txtstop);
seekmusic = findViewById(R.id.seekbar);
// if a media player is already running then.
if (mediaPlayer != null)
{
mediaPlayer.stop();
mediaPlayer.release();
}
Intent i = getIntent();
Bundle bundle = i.getExtras();
mySongs = (ArrayList)bundle.getParcelableArrayList("songs");
String songName = i.getStringExtra("songname");
position = bundle.getInt("position",0);
txtsname.setSelected(true);
Uri uri = Uri.parse(mySongs.get(position).toString());
sname = mySongs.get(position).getName();
txtsname.setText(sname);
mediaPlayer = MediaPlayer.create(getApplicationContext(),uri);
mediaPlayer.start();
updateseekbar = new Thread()
{
#Override
public void run() {
int totalDuration = mediaPlayer.getDuration();
int currentPosition = 0;
while (currentPosition<totalDuration)
{
try {
sleep(500);
currentPosition = mediaPlayer.getCurrentPosition();
seekmusic.setProgress(currentPosition);
}
catch (InterruptedException | IllegalStateException e)
{
e.printStackTrace();
}
}
}
};
seekmusic.setMax(mediaPlayer.getDuration());
updateseekbar.start();
seekmusic.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
#Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
mediaPlayer.seekTo(seekBar.getProgress());
}
});
String endTime = createTime(mediaPlayer.getDuration());
txtstop.setText(endTime);
final Handler handler = new Handler();
final int delay = 1000;
handler.postDelayed(new Runnable() {
#Override
public void run() {
String currentTime = createTime(mediaPlayer.getCurrentPosition());
txtstart.setText(currentTime);
handler.postDelayed(this,delay);
}
},delay);
// click Listener ON PLAY button
btnplay.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (mediaPlayer.isPlaying())
{
btnplay.setBackgroundResource(R.drawable.play);
mediaPlayer.pause();
}
else
{
btnplay.setBackgroundResource(R.drawable.pause);
mediaPlayer.start();
}
}
});
// click Listener ON next button
btnnext.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mediaPlayer.stop();
mediaPlayer.release();
if (shuffleBol && !loopBol){
position=getRandom((mySongs.size()));
}
else if(!shuffleBol && !loopBol)
{
position=((position+1)%mySongs.size());
}
Uri u = Uri.parse(mySongs.get(position).toString());
mediaPlayer = MediaPlayer.create(getApplicationContext(),u);
sname=mySongs.get(position).getName();
txtsname.setText(sname);
mediaPlayer.start();
btnplay.setBackgroundResource(R.drawable.pause);
String endTime = createTime(mediaPlayer.getDuration());
txtstop.setText(endTime);
}
});
// click Listener ON previous button
btnprev.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mediaPlayer.stop();
mediaPlayer.release();
if (shuffleBol && !loopBol){
position=getRandom((mySongs.size()));
}
else if(!shuffleBol && !loopBol){
position=((position-1)<0)?(mySongs.size()-1):(position-1);
}
Uri u = Uri.parse(mySongs.get(position).toString());
mediaPlayer = MediaPlayer.create(getApplicationContext(),u);
sname=mySongs.get(position).getName();
txtsname.setText(sname);
mediaPlayer.start();
btnplay.setBackgroundResource(R.drawable.pause);
String endTime = createTime(mediaPlayer.getDuration());
txtstop.setText(endTime);
}
});
// click listener for shuffle btn
btnshuffle.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (shuffleBol){
shuffleBol=false;
btnshuffle.setImageResource(R.drawable.shuffle_off);
}
else {
shuffleBol=true;
btnshuffle.setImageResource(R.drawable.shuffle_on);
}
}
});
// click listener for loop btn
btnloop.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (loopBol){
loopBol=false;
btnloop.setImageResource(R.drawable.loop_off);
}
else {
loopBol=true;
btnloop.setImageResource(R.drawable.loop_on);
}
}
});
// next Listener ON song completion
mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mp) {
btnnext.performClick();
}
});
}
public String createTime(int duration)
{
String time = "";
int min = duration/1000/60;
int sec = duration/1000%60;
time+=min+":";
if (sec<10)
{
time+="0";
}
time+=sec;
return time;
}
private int getRandom(int i) {
Random random= new Random();
return random.nextInt(i+1);
}
}
PlayerActivity.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/bg"
android:orientation="vertical"
android:weightSum="10"
tools:context=".PlayerActivity"
android:baselineAligned="false">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="7"
android:gravity="center"
android:orientation="vertical"
tools:ignore="Suspicious0dp,UselessParent">
<TextView
android:id="#+id/txtsn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:ellipsize="marquee"
android:marqueeRepeatLimit="marquee_forever"
android:singleLine="true"
android:text="#string/song_name"
android:textAlignment="center"
android:textColor="#color/black"
android:textSize="18sp"
android:textStyle="italic">
</TextView>
<ImageView
android:id="#+id/imageview"
android:layout_width="250dp"
android:layout_height="250dp"
android:layout_marginBottom="8dp"
android:src="#drawable/logo">
</ImageView>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="60dp">
<SeekBar
android:id="#+id/seekbar"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerInParent="true"
android:layout_margin="20dp"
android:layout_marginBottom="40dp">
</SeekBar>
<TextView
android:id="#+id/txtstart"
android:layout_width="78dp"
android:layout_height="wrap_content"
android:layout_alignParentLeft="false"
android:layout_centerInParent="true"
android:layout_centerVertical="true"
android:layout_marginLeft="20dp"
android:layout_marginRight="-17dp"
android:layout_toLeftOf="#+id/seekbar"
android:text="0:00"
android:textAlignment="center"
android:textColor="#color/black"
android:textSize="15sp">
</TextView>
<TextView
android:id="#+id/txtstop"
android:layout_width="78dp"
android:layout_height="wrap_content"
android:layout_alignParentRight="false"
android:layout_centerInParent="true"
android:layout_marginLeft="-14dp"
android:layout_marginRight="20dp"
android:layout_toRightOf="#+id/seekbar"
android:text="#string/_4_10"
android:textAlignment="center"
android:textColor="#color/black"
android:textSize="15sp">
</TextView>
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="98dp"
android:layout_weight="3">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/playbtn"
android:layout_width="70dp"
android:layout_height="70dp"
android:layout_centerHorizontal="true"
android:background="#drawable/pause" />
<ImageView
android:id="#+id/btnnext"
android:layout_width="55dp"
android:layout_height="55dp"
android:layout_marginLeft="20dp"
android:layout_marginTop="10dp"
android:layout_toRightOf="#+id/playbtn"
android:background="#drawable/next" />
<ImageView
android:id="#+id/btnprev"
android:layout_width="55dp"
android:layout_height="55dp"
android:layout_marginTop="10dp"
android:layout_marginRight="20dp"
android:layout_toLeftOf="#+id/playbtn"
android:background="#drawable/previous" />
<ImageView
android:id="#+id/btnshuffle"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_toLeftOf="#+id/btnprev"
android:layout_marginTop="85dp"
android:layout_marginRight="35dp"
android:background="#drawable/shuffle_off"/>
<ImageView
android:id="#+id/btnloop"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_toRightOf="#+id/btnnext"
android:layout_marginTop="85dp"
android:layout_marginLeft="35dp"
android:background="#drawable/loop_off"/>
</RelativeLayout>
</LinearLayout>
</LinearLayout>

In above image, you see that you are sending the position of filtered array and sending the songs list (mysongs) which is not filtered. That's why it's happening.
So you need to do is that either send the filtered array. Or add some logic to get the correct position from songs list. that's it.
if you can not figure out then let me know I will update appropriate logic.

how can i change imagebuttons automatically after what users want?

I making an app which you can use to start other apps like Netflix on. I have four imagebuttons on the first XML file which is going to be the "Favorites". When you click on any of these imagebuttons you start the intent for the app you wanted to start. Then the app gets opened. How can I make it so that the Favorites changes automatically after what the user uses.
Here is my Java Code:
package com.carlo_projekt.tvprograms;
import android.app.AlertDialog;
import android.content.ActivityNotFoundException;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.speech.RecognizerIntent;
import android.speech.tts.TextToSpeech;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Locale;
' public class MainActivity extends AppCompatActivity {
ImageButton speakBtn;
Button CategoriesBtn;
TextView text;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
speakBtn = (ImageButton) findViewById(R.id.SpeakImageBtn);
CategoriesBtn = (Button) findViewById(R.id.CategoriesBtn);
text = (TextView) findViewById(R.id.textView);
}
public void OpenGame(View view) {
Intent intent = new Intent(this, MoreActivity.class);
startActivity(intent);
}
public void Speak(View view)
{
Intent recognizeIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
recognizeIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
recognizeIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, "en-US");
recognizeIntent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Hi! Which app do you want to start?");
try {
startActivityForResult(recognizeIntent, 1);
}
catch (ActivityNotFoundException a)
{
Toast.makeText(MainActivity.this, "Sorry! Your device doesn't support this function!", Toast.LENGTH_LONG).show();
}
}
public void onActivityResult(int request_Code, int result_Code, Intent recognizeIntent)
{
super.onActivityResult(request_Code, result_Code, recognizeIntent);
switch (request_Code)
{
case 1: if(result_Code == RESULT_OK && recognizeIntent != null)
{
ArrayList<String> result = recognizeIntent.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
for(int i = 0; i<result.size(); i++)
{
result.set(i, result.get(i).toLowerCase());
if(result.get(i).compareTo("start netflix") == 0)
{
Intent NetflixIntent = getPackageManager().getLaunchIntentForPackage("com.netflix.mediaclient");
startActivity(NetflixIntent);
}
else if(result.get(i).compareTo("start youtube") == 0)
{
Intent NetflixIntent = getPackageManager().getLaunchIntentForPackage("com.google.android.youtube");
startActivity(NetflixIntent);
}
else if(result.get(i).compareTo("start viafree") == 0)
{
Intent NetflixIntent = getPackageManager().getLaunchIntentForPackage("se.viafree.android");
startActivity(NetflixIntent);
}
else if(result.get(i).compareTo("start tvfour") == 0)
{
Intent NetflixIntent = getPackageManager().getLaunchIntentForPackage("se.tv4.tv4playtab");
startActivity(NetflixIntent);
}
else if(result.get(i).compareTo("start dplay") == 0)
{
Intent NetflixIntent = getPackageManager().getLaunchIntentForPackage("se.kanal5play");
startActivity(NetflixIntent);
}
else if(result.get(i).compareTo("start viaplay") == 0)
{
Intent NetflixIntent = getPackageManager().getLaunchIntentForPackage("com.viaplay.android");
startActivity(NetflixIntent);
}
else if(result.get(i).compareTo("start svtplay") == 0)
{
Intent NetflixIntent = getPackageManager().getLaunchIntentForPackage("se.svt.android.svtplay");
startActivity(NetflixIntent);
}
/**text.setText(result.get(i));*/
}
}
}
}
public void OpenApps(String packageName)
{
if(getPackageManager().getLaunchIntentForPackage(packageName) != null)
{
Intent tv4PlayIntent = getPackageManager().getLaunchIntentForPackage(packageName);
startActivity(tv4PlayIntent);
}
else
{
String marketAppPackageName = "market://details?id="+ packageName;
MessageBox(marketAppPackageName);
}
}
public void NetflixFunction(View view)
{
String netflixPackageName = new String("com.netflix.mediaclient");
OpenApps(netflixPackageName);
}
public void ViafreeFunction(View view)
{
String viafreePackageName = new String("se.viafree.android");
OpenApps(viafreePackageName);
}
public void YoutubeFunction(View view)
{
String youtubePackageName = new String("com.google.android.youtube");
OpenApps(youtubePackageName);
}
public void Tv4PlayFunction(View view)
{
String tv4playPackageName = new String("se.tv4.tv4playtab");
OpenApps(tv4playPackageName);
}
public void LayoutsShow(View view)
{
RelativeLayout layoutShow = findViewById(R.id.LayoutShow);
if (layoutShow.getVisibility() == View.GONE) {
layoutShow.setVisibility(View.VISIBLE);
}
else if (layoutShow.getVisibility() == View.VISIBLE) {
layoutShow.setVisibility(View.GONE);
}
}
public void MessageBox(final String uriIntent)
{
AlertDialog alertDialog = new AlertDialog.Builder(MainActivity.this).create();
alertDialog.setTitle("Couldn't find this app");
String messageText = "We cant find this app, do you want to download it?";
alertDialog.setMessage(messageText);
alertDialog.setButton(AlertDialog.BUTTON_NEGATIVE, "Yes",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent MarketIntent = new Intent(Intent.ACTION_VIEW);
MarketIntent.setData(Uri.parse(uriIntent));
startActivity(MarketIntent);
dialog.dismiss();
}
});
alertDialog.setButton(AlertDialog.BUTTON_POSITIVE, "No",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
alertDialog.show();
}}
This is my XML Code:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/backgroundColor"
tools:context="com.carlo_projekt.tvprograms.MainActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:ignore="MissingConstraints"
tools:layout_editor_absoluteX="0dp"
tools:layout_editor_absoluteY="0dp">
<Button
android:id="#+id/CategoriesBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="56dp"
android:background="#drawable/round_corners"
android:onClick="OpenGame"
android:text="Categories"
android:textAllCaps="false" />
<ImageButton
android:id="#+id/NetflixImageBtn"
android:layout_width="90dp"
android:layout_height="90dp"
android:layout_centerVertical="true"
android:layout_toStartOf="#+id/CategoriesBtn"
android:onClick="NetflixFunction"
app:srcCompat="#drawable/netflix" />
<ImageButton
android:id="#+id/YoutubeImageBtn"
android:layout_width="90dp"
android:layout_height="90dp"
android:layout_alignTop="#+id/NetflixImageBtn"
android:layout_toEndOf="#+id/CategoriesBtn"
android:onClick="YoutubeFunction"
app:srcCompat="#drawable/youtube" />
<ImageButton
android:id="#+id/ViafreeImageBtn"
android:layout_width="90dp"
android:layout_height="90dp"
android:layout_alignStart="#+id/NetflixImageBtn"
android:layout_below="#+id/NetflixImageBtn"
android:layout_marginTop="52dp"
android:onClick="ViafreeFunction"
app:srcCompat="#drawable/viafree" />
<ImageButton
android:id="#+id/Tv4PlayImageBtn"
android:layout_width="90dp"
android:layout_height="90dp"
android:layout_alignEnd="#+id/YoutubeImageBtn"
android:layout_alignTop="#+id/ViafreeImageBtn"
android:onClick="Tv4PlayFunction"
app:srcCompat="#drawable/tv4" />
<ImageButton
android:id="#+id/SpeakImageBtn"
android:layout_width="40dp"
android:layout_height="60dp"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:onClick="Speak"
app:srcCompat="#drawable/microphone" />
<ImageButton
android:id="#+id/imageButton19"
android:layout_width="40dp"
android:layout_height="20dp"
android:layout_alignParentEnd="true"
app:srcCompat="#drawable/sweden" />
<ImageButton
android:id="#+id/imageButton24"
android:layout_width="40dp"
android:layout_height="20dp"
android:layout_alignParentEnd="true"
android:layout_below="#+id/imageButton19"
app:srcCompat="#drawable/great_britain" />
<ImageButton
android:id="#+id/imageButton22"
android:layout_width="40dp"
android:layout_height="20dp"
android:layout_alignParentEnd="true"
android:layout_below="#+id/imageButton24"
app:srcCompat="#drawable/germany" />
<ImageButton
android:id="#+id/imageButton23"
android:layout_width="40dp"
android:layout_height="20dp"
android:layout_alignParentEnd="true"
android:layout_below="#+id/imageButton22"
app:srcCompat="#drawable/france" />
<ImageButton
android:id="#+id/imageButton25"
android:layout_width="40dp"
android:layout_height="20dp"
android:layout_alignParentEnd="true"
android:layout_below="#+id/imageButton23"
app:srcCompat="#drawable/spanish" />
<TextView
android:id="#+id/textView"
android:layout_width="193dp"
android:layout_height="33dp"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_marginBottom="217dp"
android:layout_marginEnd="90dp"
android:text="TextView"
android:textColor="#ff00" />
</RelativeLayout>
</android.support.constraint.ConstraintLayout>
`
I'm pretty new with stack overflow so I hope you understand what I'm trying to do.

Get SharedPreferences object:
SharedPreferences sharedPref = getActivity().getPreferences(Context.MODE_PRIVATE);
Create a click listener that will update the click count for the appropriate button:
View.OnClickListener myClickListener= new View.OnClickListener() {
public void onClick(View v) {
String tag = (String) v.getTag();
sharedPref
.edit()
.putInt(tag, shardPref.getInteger(tag) + 1)
.apply();
}
};
Now for each of your buttons, you will want to set both the click listener and a tag for naming purposes:
Button btn = findViewById(R.id.NetflixImageBtn);
btn.setTag("netflix");
btn.setOnClickListener(myClickListener);
Now when you click a button, it will increment the count associated with the tag. You can use that information however you wish.

How do i make a media player read both internal and external storage

I developed a music player app from a tutorial i watched
and when i ran it on a device that didn't contain an sdcard
it crashed.So i cant publish it so what can i add or change
that will enable it to read music from internal storage.
Java class
package com.example.playaudioexample;
import android.app.ListActivity;
import android.content.Context;
import android.database.Cursor;
import android.media.MediaPlayer;
import android.os.Handler;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageButton;
import android.widget.ListView;
import android.widget.SeekBar;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import android.widget.Toast;
import java.io.IOException;
import java.math.BigDecimal;
public class PlayAudioExample extends ListActivity {
private static final int UPDATE_FREQUENCY = 500;
private static final int STEP_VALUE = 4000;
private MediaCursorAdapter mediaAdapter = null;
private TextView selelctedFile = null;
private SeekBar seekbar = null;
private MediaPlayer player = null;
private ImageButton playButton = null;
private ImageButton prevButton = null;
private ImageButton nextButton = null;
private ImageButton floatButton = null;
private ImageButton floatButton2 = null;
private boolean isStarted = true;
private String currentFile = "";
private boolean isMoveingSeekBar = false;
private final Handler handler = new Handler();
private final Runnable updatePositionRunnable = new Runnable() {
public void run() {
updatePosition();
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.content_play_audio_example);
selelctedFile = (TextView) findViewById(R.id.selectedfile);
seekbar = (SeekBar) findViewById(R.id.seekbar);
playButton = (ImageButton) findViewById(R.id.play);
prevButton = (ImageButton) findViewById(R.id.prev);
nextButton = (ImageButton) findViewById(R.id.next);
floatButton = (ImageButton) findViewById(R.id.imageinfo);
floatButton2 = (ImageButton)findViewById(R.id.imageMessage);
floatButton2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getApplicationContext(),
"CONTACT:gabriel.agbese2001#gmail.com",Toast.LENGTH_LONG).show();
}
});
floatButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getApplicationContext(),
"Developed by:Gabriel Agbese",Toast.LENGTH_LONG).show();
}
});
player = new MediaPlayer();
player.setOnCompletionListener(onCompletion);
player.setOnErrorListener(onError);
seekbar.setOnSeekBarChangeListener(seekBarChanged);
Cursor cursor = getContentResolver().query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, null, null, null, null);
if (null != cursor) {
cursor.moveToFirst();
mediaAdapter = new MediaCursorAdapter(this, R.layout.listitem, cursor);
setListAdapter(mediaAdapter);
playButton.setOnClickListener(onButtonClick);
nextButton.setOnClickListener(onButtonClick);
prevButton.setOnClickListener(onButtonClick);
}
}
#Override
protected void onListItemClick(ListView list, View view, int position, long id) {
super.onListItemClick(list, view, position, id);
currentFile = (String) view.getTag();
startPlay(currentFile);
}
#Override
protected void onDestroy() {
super.onDestroy();
handler.removeCallbacks(updatePositionRunnable);
player.stop();
player.reset();
player.release();
player = null;
}
private void startPlay(String file) {
Log.i("Selected: ", file);
selelctedFile.setText(file);
seekbar.setProgress(0);
player.stop();
player.reset();
try {
player.setDataSource(file);
player.prepare();
player.start();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
seekbar.setMax(player.getDuration());
playButton.setImageResource(android.R.drawable.ic_media_pause);
updatePosition();
isStarted = true;
}
private void stopPlay() {
player.stop();
player.reset();
playButton.setImageResource(android.R.drawable.ic_media_play);
handler.removeCallbacks(updatePositionRunnable);
seekbar.setProgress(0);
isStarted = false;
}
private void updatePosition() {
handler.removeCallbacks(updatePositionRunnable);
seekbar.setProgress(player.getCurrentPosition());
handler.postDelayed(updatePositionRunnable, UPDATE_FREQUENCY);
}
private class MediaCursorAdapter extends SimpleCursorAdapter {
public MediaCursorAdapter(Context context, int layout, Cursor c) {
super(context, layout, c,
new String[]{MediaStore.MediaColumns.DISPLAY_NAME, MediaStore.MediaColumns.TITLE, MediaStore.Audio.AudioColumns.DURATION},
new int[]{R.id.displayname, R.id.title, R.id.duration});
}
#Override
public void bindView(View view, Context context, Cursor cursor) {
TextView title = (TextView) view.findViewById(R.id.title);
TextView name = (TextView) view.findViewById(R.id.displayname);
TextView duration = (TextView) view.findViewById(R.id.duration);
name.setText(cursor.getString(
cursor.getColumnIndex(MediaStore.MediaColumns.DISPLAY_NAME)));
title.setText(cursor.getString(
cursor.getColumnIndex(MediaStore.MediaColumns.TITLE)));
long durationInMs = Long.parseLong(cursor.getString(
cursor.getColumnIndex(MediaStore.Audio.AudioColumns.DURATION)));
double durationInMin = ((double) durationInMs / 1000.0) / 60.0;
durationInMin = new BigDecimal(Double.toString(durationInMin)).setScale(2, BigDecimal.ROUND_UP).doubleValue();
duration.setText("" + durationInMin);
view.setTag(cursor.getString(cursor.getColumnIndex(MediaStore.MediaColumns.DATA)));
}
#Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
LayoutInflater inflater = LayoutInflater.from(context);
View v = inflater.inflate(R.layout.listitem, parent, false);
bindView(v, context, cursor);
return v;
}
}
private View.OnClickListener onButtonClick = new View.OnClickListener() {
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.play: {
if (player.isPlaying()) {
handler.removeCallbacks(updatePositionRunnable);
player.pause();
playButton.setImageResource(android.R.drawable.ic_media_play);
} else {
if (isStarted) {
player.start();
playButton.setImageResource(android.R.drawable.ic_media_pause);
updatePosition();
} else {
startPlay(currentFile);
}
}
break;
}
case R.id.next: {
int seekto = player.getCurrentPosition() + STEP_VALUE;
if (seekto > player.getDuration())
seekto = player.getDuration();
player.pause();
player.seekTo(seekto);
player.start();
break;
}
case R.id.prev: {
int seekto = player.getCurrentPosition() - STEP_VALUE;
if (seekto < 0)
seekto = 0;
player.pause();
player.seekTo(seekto);
player.start();
break;
}
}
}
};
private MediaPlayer.OnCompletionListener onCompletion = new MediaPlayer.OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mp) {
stopPlay();
}
};
private MediaPlayer.OnErrorListener onError = new MediaPlayer.OnErrorListener() {
#Override
public boolean onError(MediaPlayer mp, int what, int extra) {
return false;
}
};
private SeekBar.OnSeekBarChangeListener seekBarChanged = new SeekBar.OnSeekBarChangeListener() {
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
isMoveingSeekBar = false;
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
isMoveingSeekBar = true;
}
#Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if (isMoveingSeekBar) {
player.seekTo(progress);
Log.i("OnSeekBarChangeListener", "onProgressChanged");
}
}
};
}
content_play_audio_example.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#0a0b0e"
android:orientation="vertical"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".PlayAudioExample">
<ListView
android:id="#android:id/list"
android:background="#f0fffdfd"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#android:color/black"
android:layout_weight="1.0" />
<LinearLayout
android:layout_width="wrap_content"
android:background="#f7262624"
android:layout_height="wrap_content">
<ImageButton
android:layout_width="65dp"
android:layout_height="65dp"
android:background="#drawable/oval"
android:id="#+id/imageinfo"
android:src="#android:drawable/ic_dialog_info"
android:layout_gravity="center_horizontal" />
<ImageButton
android:layout_width="65dp"
android:layout_height="65dp"
android:background="#drawable/oval2"
android:id="#+id/imageMessage"
android:src="#android:drawable/ic_dialog_email" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:backgroundTint="#f7262624"
android:background="#android:drawable/screen_background_light"
android:orientation="vertical"
android:padding="10dip">
<TextView
android:id="#+id/selectedfile"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:ellipsize="middle"
android:gravity="center_horizontal"
android:singleLine="true"
android:text="No file selected"
android:textColor="#android:color/black" />
<SeekBar
android:id="#+id/seekbar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="100"
android:paddingBottom="10dip" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#android:drawable/screen_background_light"
android:gravity="center"
android:backgroundTint="#ca030b03"
android:orientation="horizontal">
<ImageButton
android:id="#+id/prev"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#000"
android:src="#android:drawable/ic_media_previous" />
<ImageButton
android:id="#+id/play"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#android:drawable/ic_media_play" />
<ImageButton
android:id="#+id/next"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#000"
android:src="#android:drawable/ic_media_next" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
listitem.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#0a0b0e"
android:orientation="vertical"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".PlayAudioExample">
<ListView
android:id="#android:id/list"
android:background="#f0fffdfd"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#android:color/black"
android:layout_weight="1.0" />
<LinearLayout
android:layout_width="wrap_content"
android:background="#f7262624"
android:layout_height="wrap_content">
<ImageButton
android:layout_width="65dp"
android:layout_height="65dp"
android:background="#drawable/oval"
android:id="#+id/imageinfo"
android:src="#android:drawable/ic_dialog_info"
android:layout_gravity="center_horizontal" />
<ImageButton
android:layout_width="65dp"
android:layout_height="65dp"
android:background="#drawable/oval2"
android:id="#+id/imageMessage"
android:src="#android:drawable/ic_dialog_email" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:backgroundTint="#f7262624"
android:background="#android:drawable/screen_background_light"
android:orientation="vertical"
android:padding="10dip">
<TextView
android:id="#+id/selectedfile"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:ellipsize="middle"
android:gravity="center_horizontal"
android:singleLine="true"
android:text="No file selected"
android:textColor="#android:color/black" />
<SeekBar
android:id="#+id/seekbar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="100"
android:paddingBottom="10dip" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#android:drawable/screen_background_light"
android:gravity="center"
android:backgroundTint="#ca030b03"
android:orientation="horizontal">
<ImageButton
android:id="#+id/prev"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#000"
android:src="#android:drawable/ic_media_previous" />
<ImageButton
android:id="#+id/play"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#android:drawable/ic_media_play" />
<ImageButton
android:id="#+id/next"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#000"
android:src="#android:drawable/ic_media_next" />
</LinearLayout>
</LinearLayout>
</LinearLayout>