Question

(Mobile-Android Studio)

Hello. Thank you for coming to help me:)

I am using the Andriod studio on mac. and using Java code to develop. and Please start with basic activity with constraints layout (not empty).

(audio file is not given, let's say there any audio file). I just would like to see the codes how it works. Thank you very much.

I would like to know how to write a program that includes two buttons called plays Play and Stop. When the Play button is press, the program will play an audio file. When the Stop button is press, the program will stop playing the audio file.

Answer 1

MainActivity.java:-


package com.example.HomeworkLib;
import androidx.appcompat.app.AppCompatActivity;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;


public class MainActivity extends AppCompatActivity {
MediaPlayer mediaPlayer;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mediaPlayer=MediaPlayer.create(getApplicationContext(),R.raw.wecantstop);
        Button play=(Button)findViewById(R.id.play);
        Button stop=(Button)findViewById(R.id.stop);
        play.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mediaPlayer.start();
                mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
                    @Override
                    public void onCompletion(MediaPlayer mp) {
                        Toast.makeText(MainActivity.this,"song played Completely",Toast.LENGTH_SHORT).show();
                    }
                });
            }
        });
        stop.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mediaPlayer.pause();
            }
        });
    }
}

activity_main.xml :-

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    tools:context=".MainActivity">


    <Button
        android:layout_width="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:layout_height="wrap_content"
        android:id="@+id/play"
        android:text="PLAY" />

    <Button
        android:id="@+id/stop"
        android:layout_below="@+id/play"
        android:layout_centerHorizontal="true"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="STOP" />


</RelativeLayout>

This works for me you can choose any audio file.