Android简易音乐播放器实现代码

本文实例为大家分享了Android音乐播放器的具体代码，供大家参考，具体内容如下

1.播放项目内的音乐

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 package com.thm.g150820_android26_playmusic; import Android.media.MediaPlayer; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.ImageButton; import android.widget.SeekBar; public class MainActivity extends AppCompatActivity { private MediaPlayer mediaPlayer; private SeekBar seekBar; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.activity_main); seekBar = (SeekBar) findViewById(R.id.seekBar); seekBar.setOnSeekBarChangeListener( new SeekBar.OnSeekBarChangeListener() { @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { } @Override public void onStartTrackingTouch(SeekBar seekBar) { } @Override public void onStopTrackingTouch(SeekBar seekBar) { //获取拖动结束之后的位置 int progress = seekBar.getProgress(); //跳转到某个位置播放 mediaPlayer.seekTo(progress); } }); } public void isPlayOrPause(View view){ //把View强转为ImageButton ImageButton imageButton = (ImageButton) view; if (mediaPlayer== null ) { //实例化MediaPlayer mediaPlayer = MediaPlayer.create( this , R.raw.yao); //开始播放 mediaPlayer.start(); //图标修改为暂停的图标 imageButton.setImageResource(android.R.drawable.ic_media_pause); //获取音乐的总时长 int duration = mediaPlayer.getDuration(); //设置进度条的最大值为音乐的总时长 seekBar.setMax(duration); new MyThre().start(); } //判断如果音乐在播放 else if (mediaPlayer.isPlaying()){ //就暂停音乐 mediaPlayer.pause(); //图标修改为播放的图标 imageButton.setImageResource(android.R.drawable.ic_media_play); } else { mediaPlayer.start(); //图标修改为暂停的图标 imageButton.setImageResource(android.R.drawable.ic_media_pause); } } //写内部类 class MyThre extends Thread{ @Override public void run() { super .run(); while (seekBar.getProgress()<=seekBar.getMax()){ //获取当前音乐播放的位置 int currentPosition = mediaPlayer.getCurrentPosition(); //让进度条动起来 seekBar.setProgress(currentPosition); } } } }

2.播放内存卡中的音乐

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 package com.thm.g150820_android26_playmusic; import android.media.AudioManager; import android.media.MediaPlayer; import android.net.Uri; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.ImageButton; import android.widget.SeekBar; import java.io.IOException; public class MainActivity extends AppCompatActivity { private MediaPlayer mediaPlayer; private SeekBar seekBar; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.activity_main); seekBar = (SeekBar) findViewById(R.id.seekBar); seekBar.setOnSeekBarChangeListener( new SeekBar.OnSeekBarChangeListener() { @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { } @Override public void onStartTrackingTouch(SeekBar seekBar) { } @Override public void onStopTrackingTouch(SeekBar seekBar) { //获取拖动结束之后的位置 int progress = seekBar.getProgress(); //跳转到某个位置播放 mediaPlayer.seekTo(progress); } }); } public void isPlayOrPause(View view){ //把View强转为ImageButton ImageButton imageButton = (ImageButton) view; if (mediaPlayer== null ) { //实例化MediaPlayer //播放应用内的音乐 //mediaPlayer = MediaPlayer.create(this, R.raw.yao); //播放内存卡中的音乐 mediaPlayer = new MediaPlayer(); //设置类型 mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); //设置音乐路径 try { mediaPlayer.setDataSource( this , Uri.parse( "storage/sdcard0/Music/a.mp3" )); //播放之前准备一下 mediaPlayer.prepare(); } catch (IOException e) { e.printStackTrace(); } //开始播放 mediaPlayer.start(); //图标修改为暂停的图标 imageButton.setImageResource(android.R.drawable.ic_media_pause); //获取音乐的总时长 int duration = mediaPlayer.getDuration(); //设置进度条的最大值为音乐的总时长 seekBar.setMax(duration); new MyThre().start(); } //判断如果音乐在播放 else if (mediaPlayer.isPlaying()){ //就暂停音乐 mediaPlayer.pause(); //图标修改为播放的图标 imageButton.setImageResource(android.R.drawable.ic_media_play); } else { mediaPlayer.start(); //图标修改为暂停的图标 imageButton.setImageResource(android.R.drawable.ic_media_pause); } } //写线程内部类 class MyThre extends Thread{ @Override public void run() { super .run(); while (seekBar.getProgress()<=seekBar.getMax()){ //获取当前音乐播放的位置 int currentPosition = mediaPlayer.getCurrentPosition(); //让进度条动起来 seekBar.setProgress(currentPosition); } } } }

3.添加读取内存的权限

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。

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