Mobile Programing

Tugas Android Studio Pemutar Musik

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"
    android:background="#fff"
    tools:context="com.musik.MainActivity">


    <ImageView
        android:id="@+id/gambar"
        android:layout_width="match_parent"
        android:layout_height="550dp"
        android:layout_alignParentTop="true"
        android:layout_marginTop="53dp"
        app:srcCompat="@drawable/digitalmusic"
        tools:ignore="ContentDescription" />

    <Button
        android:id="@+id/play"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginBottom="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginStart="16dp"
        android:text="Play"
        tools:ignore="HardcodedText" />

    <Button
        android:id="@+id/pause"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignTop="@+id/play"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="16dp"
        android:text="Pause"
        tools:ignore="HardcodedText" />

    <Button
        android:id="@+id/stop"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_alignParentRight="true"
        android:layout_alignTop="@+id/pause"
        android:layout_marginBottom="16dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:text="Stop"
        tools:ignore="HardcodedText" />

</RelativeLayout>

MainActivity.java

package com.musik;

import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import androidx.appcompat.app.AppCompatActivity;

import java.io.IOException;

public class MainActivity extends AppCompatActivity implements View.OnClickListener{

    //Deklarasi Variable
    private Button Play, Pause, Stop;
    private MediaPlayer mediaPlayer;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //Inisialisasi Button
        Play = findViewById(R.id.play);
        Pause = findViewById(R.id.pause);
        Stop = findViewById(R.id.stop);

        //Menambahkan Listener pada Button
        Play.setOnClickListener(this);
        Pause.setOnClickListener(this);
        Stop.setOnClickListener(this);

        stateAwal();
    }

    //Untuk menentukan kondisi saat aplikasi pertama kali berjalan
    private void stateAwal(){
        Play.setEnabled(true);
        Pause.setEnabled(false);
        Stop.setEnabled(false);
    }

    //Method untuk memainkan musik
    private void playAudio(){
        //Menentukan resource audio yang akan dijalankan
        mediaPlayer = MediaPlayer.create(this, R.raw.alan);

        //Kondisi Button setelah tombol play di klik
        Play.setEnabled(false);
        Pause.setEnabled(true);
        Stop.setEnabled(true);

        //Menjalankan Audio / Musik
        try{
            mediaPlayer.prepare();
        }catch (IllegalStateException ex){
            ex.printStackTrace();
        }catch (IOException ex1){
            ex1.printStackTrace();
        }
        mediaPlayer.start();

        //Setelah audio selesai dimainkan maka kondisi Button akan kembali seperti awal
        mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mp) {
                stateAwal();
            }
        });
    }


    //Method untuk mengentikan musik
    private void pauseAudio(){
        //Jika audio sedang dimainkan, maka audio dapat di pause
        if(mediaPlayer.isPlaying()){
            if(mediaPlayer != null){
                mediaPlayer.pause();
                Pause.setText("Lanjutkan");
            }
        }else {

            //Jika audio sedang di pause, maka audio dapat dilanjutkan kembali
            if(mediaPlayer != null){
                mediaPlayer.start();
                Pause.setText("Pause");
            }
        }
    }

    //Method untuk mengakhiri musik
    private void stopAudio(){
        mediaPlayer.stop();
        try {
            //Menyetel audio ke status awal
            mediaPlayer.prepare();
            mediaPlayer.seekTo(0);
        }catch (Throwable t){
            t.printStackTrace();
        }
        stateAwal();
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.play:
                playAudio();
                break;

            case R.id.pause:
                pauseAudio();
                break;

            case R.id.stop:
                stopAudio();
                break;
        }
    }
}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.musik">
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="My Music"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />


                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>