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[Android] 安卓簡單mp3播放器 [復(fù)制鏈接]

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論壇徽章:: 1

操作系統(tǒng)版塊每日發(fā)帖之星
日期:2015-07-07 22:20:00

電梯直達(dá)

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發(fā)表于 2015-07-06 14:36 |只看該作者 |倒序瀏覽

使用MediaPlayer播放mp3，mp3文件使用線程搜索出來，并顯示在列表上，點擊列表播放
按鈕有4個，可以控制暫停，播放，重新播放，停止。
進(jìn)度條可以監(jiān)控播放進(jìn)度，也可以拖動進(jìn)度條快進(jìn)，快退功能。

[Java]代碼

package com.yongzheng.mymusic;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Timer;
import java.util.TimerTask;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnErrorListener;
import android.media.MediaPlayer.OnPreparedListener;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.DialogInterface;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ListView;
import android.widget.SeekBar;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity{
private TextView musicName ;//歌曲名稱
private TextView startTime;//播放時間
private TextView endTime;//結(jié)束時間
private SeekBar seekbar;//進(jìn)度條
private Button start;//開始按鈕
private Button pause;//暫停按鈕
private Button restart;//重新開始
private Button stop;//停止按鈕
private ListView mylist;//列表
private SimpleAdapter adapter = null; // 適配器
private Timer timer;
private MediaPlayer media = null;
private List<Map<String, String>> musicListData;
private String lastPlayName = null;//記錄最后一次播放的歌曲
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
}
//初始化
private void init(){
musicListData =
new ArrayList<Map<String, String>>(); // 保存所有的List數(shù)據(jù)
this.musicName = (TextView) this.findViewById(R.id.musicName);
this.startTime = (TextView)this.findViewById(R.id.startTime);
this.endTime = (TextView)this.findViewById(R.id.endTime);
this.seekbar = (SeekBar)this.findViewById(R.id.seekbar);
this.start = (Button)this.findViewById(R.id.start);
this.pause = (Button)this.findViewById(R.id.pause);
this.restart = (Button)this.findViewById(R.id.restart);
this.stop = (Button)this.findViewById(R.id.stop);
this.mylist = (ListView)this.findViewById(R.id.mylist);
addList();
//點擊事件
this.start.setOnClickListener(new MyClickListener());
this.pause.setOnClickListener(new MyClickListener());
this.restart.setOnClickListener(new MyClickListener());
this.stop.setOnClickListener(new MyClickListener());
this.seekbar.setOnSeekBarChangeListener(new SeekBarOnClickListenerImpl());
//開啟搜索sd卡中MP3文件的線程
new Thread(){
public void run(){
getMusicDate();//搜索sd卡下面的mp3后綴的文件
}
}.start();
}
//待搜索線程完成后，執(zhí)行這個添加數(shù)據(jù)到界面上
public void addList(){
this.adapter = new SimpleAdapter(this,this.musicListData,R.layout.list,
new String[]{"name","size"},new int[]{R.id.name,R.id.size});
this.mylist.setAdapter(adapter);
this.mylist.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapt, View v, int postition,
long id) {
Map<String,String> map = MainActivity.this.musicListData.get(postition);
if(MainActivity.this.media!=null){
stop();
}
play(map.get("path"));
}
});
}
//獲取播放列表
public void getMusicDate(){
if(!(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))){
//如果不sd卡存在
return;
}
File rootPath = Environment.getExternalStorageDirectory();
File[] listFile = rootPath.listFiles();
if(listFile!=null){
for(File f : listFile){
if(f.isDirectory()){//如果是目錄
System.out.println("根文件夾："+f.getName());
getFile(f);
}else{//如果是文件
getAFile(f);
}
}
}
Message message = new Message();
message.what = 3;
MainActivity.this.handler.sendMessage(message);
return;
}
//文件
private void getAFile(File f){
String fName = f.getName();
if(!fName.endsWith("mp3")){
return;
}
Map<String,String> map = new HashMap<String,String>();
map.put("name",fName);
map.put("size", String.valueOf(f.length()/1024/1024)+"MB");
map.put("path",f.getAbsolutePath());
musicListData.add(map);
System.out.println("音樂文件路徑："+f.getAbsolutePath());
}
//路徑
private void getFile(File f){
if(!f.isDirectory()){
getAFile(f);
return;
}
File[] listFile = f.listFiles();
if(listFile!=null){
for(File ff : listFile){
if(f.isDirectory()){//如果是目錄
System.out.println("文件夾："+ff.getName());
getFile(ff);
}else{//如果是文件
System.out.println("文件："+ff.getName());
getAFile(ff);
}
}
}
}
//進(jìn)度條監(jiān)聽回調(diào)
private class SeekBarOnClickListenerImpl implements SeekBar.OnSeekBarChangeListener {
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
if(!fromUser)return;
if(MainActivity.this.media!=null){
Message message = new Message();
Bundle b = new Bundle();
b.putInt("p", progress);
message.setData(b);
message.what = 2;
MainActivity.this.handler.sendMessage(message);
MainActivity.this.media.seekTo(progress);
}
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
}
//播放控制的按鈕事件
class MyClickListener implements OnClickListener{
@Override
public void onClick(View v) {
switch(v.getId()){
case R.id.start:
play(Environment.getExternalStorageDirectory()+File.separator+"my.mp3");
break;
case R.id.pause:
pause();break;
case R.id.restart:
restart();break;
case R.id.stop:
stop();break;
}
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
//停止播放
private void stop(){
if(MainActivity.this.media!=null){
MainActivity.this.start.setClickable(true);
MainActivity.this.media.release();
MainActivity.this.media = null;
}
}
//從頭開始播放
private void restart(){
if(MainActivity.this.media!=null){
MainActivity.this.media.seekTo(0);
}
}
//暫停獲取繼續(xù)播放
private void pause(){
if(MainActivity.this.media==null){
MainActivity.this.pause.setText("暫停");
return;
}
if("繼續(xù)".equals(MainActivity.this.pause.getText().toString())){
MainActivity.this.media.start();
MainActivity.this.pause.setText("暫停");
}else if(MainActivity.this.media.isPlaying()){
MainActivity.this.media.pause();
MainActivity.this.pause.setText("繼續(xù)");
}
}
//開始播放
private void play(String path){
if(path==null||"".equals(path)){
Toast.makeText(this, "請選擇播放文件", Toast.LENGTH_SHORT);
return;
}
this.musicName.setText(path.substring(path.lastIndexOf("/")+ 1));
File file = new File(path);
if(file.exists()&&file.length()>0){
try {
this.media = new MediaPlayer();
this.media.setAudioStreamType(AudioManager.STREAM_MUSIC);//設(shè)置播放類型
this.media.setDataSource(path);
this.media.setOnCompletionListener(new MediaCompletionListener());
this.media.setOnErrorListener(new MediaErrorListener());
this.media.prepare();
this.media.start();
this.start.setClickable(false);
//啟動事件更新及進(jìn)度條更新任務(wù)，每0.5s更新一次
MainActivity.this.timer = new Timer();
MainActivity.this.timer.schedule(new MyTask(), 0, 1000);
} catch (Exception e) {
e.printStackTrace();
Toast.makeText(this, "播放文件錯誤", Toast.LENGTH_SHORT).show();
}
}else{
Toast.makeText(this, "播放文件不存在", Toast.LENGTH_SHORT).show();
}
}
@Override
protected void onDestroy() {
super.onDestroy();
if(this.media != null) { //如果播放器對象不為空
this.media.release(); //釋放播放器資源
this.media = null; //設(shè)置對象為空
}
}
@SuppressLint("HandlerLeak")
private Handler handler = new Handler() {
public void handleMessage(Message msg) {
switch(msg.what) {
case 1:
if(MainActivity.this.media != null) {
int progress = MainActivity.this.media.getCurrentPosition(); //當(dāng)前播放毫秒
int allTime = MainActivity.this.media.getDuration(); //總毫秒
MainActivity.this.seekbar.setMax(allTime);//設(shè)置進(jìn)度條
MainActivity.this.startTime.setText(getTimeFormat(progress));
MainActivity.this.endTime.setText(getTimeFormat(allTime));
MainActivity.this.seekbar.setProgress(progress);
}
break;
case 2:
break;
case 3:
addList();
break;
}
super.handleMessage(msg);
}
};
private String getTimeFormat(int time) {
String timeStr = "00:00:00";
int s = time/1000; //秒
int h = s / 3600; //求整數(shù)部分，小時
int r = s % 3600; //求余數(shù)
int m = 0;
if(r > 0) {
m = r / 60; //分
r = r % 60; //求分后的余數(shù)，即為秒
}
if(h < 10) {
timeStr = "0" + h;
} else {
timeStr = "" + h;
}
if(m < 10) {
timeStr = timeStr + ":" + "0" + m;
} else {
timeStr = timeStr + ":" + m;
}
if(r < 10) {
timeStr = timeStr + ":" + "0" + r;
} else {
timeStr = timeStr + ":" + r;
}
return timeStr;
}
private class MyTask extends TimerTask {
@Override
public void run() {
Message message = new Message();
message.what = 1;
MainActivity.this.handler.sendMessage(message);
}
}
//播放時候錯誤回調(diào)
private class MediaErrorListener implements OnErrorListener{
@Override
public boolean onError(MediaPlayer arg0, int arg1, int arg2) {
MainActivity.this.media.stop();
MainActivity.this.media.release();
MainActivity.this.media = null;
Toast.makeText(MainActivity.this, "播放時候遇到錯誤，播放停止", Toast.LENGTH_LONG).show();
return false;
}
}
//播放完成事件
private class MediaCompletionListener implements OnCompletionListener{
@Override
public void onCompletion(MediaPlayer arg0) {
MainActivity.this.media.stop();
MainActivity.this.media.release();
MainActivity.this.media = null;
MainActivity.this.musicName.setText("當(dāng)前沒有播放");
MainActivity.this.startTime.setText("00:00");
MainActivity.this.endTime.setText("00:00");
MainActivity.this.start.setClickable(true);
}
}
}