Sound manipulation using MediaPlayer – Android dev

Another tutorial for MobileSIG – how can you manipulate an MP3 sound file to play, pause and stop. Unfortunately, I still having some problems with PAUSE. I’ll figure out letter. Basically this example may PLAY and STOP a MP3 sound file source.

This is a half day project development, sorry for any inconvenient.

The application screenshot;

APP - Baca fatihah bersama ustaz Don

What the application does – basically it has the verses in Arabic, and the recitation. Click “>” to hear the recitation, click “henti” to stop. “II” is to pause (not yet functioning). Tested on Samsung Galaxy S and HTC Wildfire only.

The project setting;

The al-Fatihah recitation is in assets (01fatihah.mp3), the images are in res/drawable-mdpi (fatihah.png is the verses in Arabic).

image

The User Interface (main.xml);

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" android:orientation="vertical" android:background="@drawable/islamicbg">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:keepScreenOn="true" android:text="al-Fatihah (1-7)"/>
<ImageView android:layout_height="wrap_content" android:src="@drawable/fatihah"
android:id="@+id/imageView1" android:layout_width="wrap_content"></ImageView>
<TableLayout android:layout_height="wrap_content" android:id="@+id/tableLayout1"
android:layout_width="fill_parent">
<TableRow android:layout_width="fill_parent" android:id="@+id/tableRow1" android:layout_height="fill_parent"
android:layout_gravity="center_vertical">
<Button android:text=" > " android:id="@+id/btnplay" android:layout_width="wrap_content"
android:layout_column="0" android:layout_height="wrap_content" />
<Button android:text=" || " android:id="@+id/btnpause" android:layout_width="wrap_content"
android:layout_column="1" android:layout_height="wrap_content" />
<Button android:text="henti" android:id="@+id/btnstop" android:layout_width="wrap_content"
android:layout_column="2" android:layout_height="wrap_content" />
</TableRow>
</TableLayout>

</LinearLayout>


The source code;



package net.kerul.alfatihah;

import android.app.Activity;
import android.content.res.AssetFileDescriptor;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class BacaFatihahActivity extends Activity implements OnClickListener{

private MediaPlayer mp;
private Button btnplay, btnpause,btnstop;
private Boolean reload_sound;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//flag to reload sound
reload_sound=true;

//UIs activation
btnplay = (Button) findViewById(R.id.btnplay);
btnplay.setOnClickListener(this);
btnpause = (Button) findViewById(R.id.btnpause);
btnpause.setOnClickListener(this);
btnpause.setEnabled(false);

btnstop = (Button) findViewById(R.id.btnstop);
btnstop.setOnClickListener(this);
btnstop.setEnabled(false);

}
public void onClick(View v) {

if (v == btnplay) {//PLAY button clicked
if (reload_sound==true){
reload_sound=false;
//preparing the sound
mp = new MediaPlayer();
try
{
AssetFileDescriptor afd = getAssets().openFd("01fatihah.mp3");
mp.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength());
mp.prepare();
mp.start();//play sound
}
catch(Exception e) {}
}
else{
mp.start();//play sound
}
btnplay.setEnabled(false);
btnpause.setEnabled(true);
btnstop.setEnabled(true);

}
else if (v == btnpause) {//PAUSE button clicked
btnplay.setEnabled(true);
btnpause.setEnabled(false);
btnstop.setEnabled(true);
if(mp.isPlaying()){

mp.pause();
}
}
else if (v == btnstop) {//STOP button clicked
btnplay.setEnabled(true);
btnpause.setEnabled(false);
btnstop.setEnabled(false);
if(mp.isPlaying()){
mp.stop();
mp.release();//remove sound from memory
reload_sound=true;
}
}
}
}




The images and sound (al-Fatihah recitation) – project folder;



The APK (android installer);



*** Credit to Ustaz Don Daniyal for his help in reciting the al-Fatihah. The voice is his. Thanks for the help.

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