Android 利用MediaPlayer实现音乐播放

Posted 2022-11-25 阿迷创客

文章目录

• • 1. PlayerActivity.java
  • 2.AndroidManifest.xml
  • 3.布局: activity_player.xml
  • 4. 效果图

• 有时候需要弄个简单播放器……， 所以就是那么简单

1. PlayerActivity.java

import androidx.appcompat.app.AppCompatActivity;

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

public class PlayerActivity extends AppCompatActivity 

    private MediaPlayer mMediaPlayer = null;
    @Override
    protected void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_player);

        mMediaPlayer = MediaPlayer.create(this.getApplicationContext(),R.raw.dukou);
        mMediaPlayer.setLooping(true);

        Button btnPlay = findViewById(R.id.btn_play);
        btnPlay.setOnClickListener(new View.OnClickListener() 
            @Override
            public void onClick(View v) 
                if(!mMediaPlayer.isPlaying())
                    mMediaPlayer.start();
                
            
        );

        Button btnStop = findViewById(R.id.btn_stop);
        btnStop.setOnClickListener(new View.OnClickListener() 
            @Override
            public void onClick(View v) 
                if(mMediaPlayer.isPlaying())
                    mMediaPlayer.pause();
                
            
        );

    

• 将测试用mp3文件直接导入raw目录下，通过R.raw.dukou引用
  

2.AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.amizhou.btrecorder">

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/Theme.AppCompat.Light">

    <activity
        android:name="com.amizhou.btrecorder.PlayerActivity"
        android:exported="true">
        <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
</activity>
</application>
</manifest>

3.布局: activity_player.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".PlayerActivity">

  <Button
      android:id="@+id/btn_play"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="播放"
      app:layout_constraintBottom_toTopOf="@+id/btn_stop"
      app:layout_constraintEnd_toEndOf="parent"
      app:layout_constraintStart_toStartOf="parent"
      app:layout_constraintTop_toTopOf="parent"
      app:layout_constraintVertical_bias="0.788" />

  <Button
      android:id="@+id/btn_stop"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_marginBottom="304dp"
      android:text="暂停"
      app:layout_constraintBottom_toBottomOf="parent"
      app:layout_constraintEnd_toEndOf="parent"
      app:layout_constraintStart_toStartOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

4. 效果图