Design
What is media player for Android
The MediaPlayer class in Android is used to play and control audio files.
MediaPlayer class:
For controlling the audio or video files, the android.media.MediaPlayer class is used.
Methods of MediaPlayer class:
The MediaPlayer class contains many methods. Some of the important methods of the MediaPlayer class are:
| Method | Uses |
| public void setDataSource(String path) | It is used to set the data source, i.e., file path or http url, to use. |
| public void prepare() | It is used to prepare the player for playback synchronously. |
| public void start() | It is used to start or resume the playback. |
| public void stop() | It is used to stop the playback. |
| public void pause() | It is used to pause the playback. |
| public boolean isPlaying() | It is used to check if the media player is playing. |
| public void seekTo(int millis) | It is used to seek a specific time in milliseconds. |
| public void setLooping(boolean looping) | It is used to set the player for looping or non-looping. |
| public boolean isLooping() | It is used to check if the player is looping or non-looping. |
| public void selectTrack(int index) | It is used to select a track for the specified index. |
| public int getCurrentPosition() | It is used to return the current playback position. |
| public int getDuration() | It is used to return the duration of the file. |
| public void setVolume(float leftVolume,float rightVolume) | It is used to set the volume on this player. |
Example: To control the audio:
In the below example, we will demonstrate how to start, stop, and pause the audio play.
activity_main.xml:
In the activity_main.xml file, we will drag three buttons from the palette to start, stop, and to pause the audio play.
|
Activity class:(File: MainActivity.java)
In the MainActivity.java file, we will write the code to start, pause, and to stop the audio player.
package com.example.radioapp;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity {
Button start,pause,stop;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
start=(Button)findViewById(R.id.button1);
pause=(Button)findViewById(R.id.button2);
stop=(Button)findViewById(R.id.button3);
//creating media player
final MediaPlayer mp=new MediaPlayer();
try{
//you can change the path, here path is external directory(e.g. sdcard) /Music/maine.mp3
mp.setDataSource(Environment.getExternalStorageDirectory().getPath()+"/Music/musicplay.mp3");
mp.prepare();
}catch(Exception e){e.printStackTrace();}
start.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mp.start();
}
});
pause.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mp.pause();
}
});
stop.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mp.stop();
}
});
}
} |
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