安卓-service的音乐播放器

于 2020-11-20 23:24:41 发布
阅读量516 收藏 5
点赞数
分类专栏： Android 文章标签： 安卓
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
本文链接：https://blog.youkuaiyun.com/weixin_44270194/article/details/109880244
版权

完成一个使用了service的音乐播放器。
在这里插入图片描述

Activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/music_bg"
    android:gravity="center"
    android:orientation="vertical">
    <ImageView
        android:id="@+id/iv_music"
        android:layout_width="240dp"
        android:layout_height="240dp"
        android:layout_gravity="center_horizontal"
        android:layout_margin="15dp"
        android:src="@drawable/music"/>
    <SeekBar
        android:id="@+id/sb"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingLeft="8dp"
        android:paddingRight="8dp">
        <TextView
            android:id="@+id/tv_progress"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="00:00"/>
        <TextView
            android:id="@+id/tv_total"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:text="00:00"/>
    </RelativeLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <Button
            android:id="@+id/btn_play"
            android:layout_width="0dp"
            android:layout_height="40dp"
            android:layout_margin="8dp"
            android:layout_weight="1"
            android:background="@drawable/btn_bg_selector"
            android:text="播放音乐"/>
        <Button
            android:id="@+id/btn_pause"
            android:layout_width="0dp"
            android:layout_height="40dp"
            android:layout_margin="8dp"
            android:layout_weight="1"
            android:background="@drawable/btn_bg_selector"
            android:text="暂停播放"/>
        <Button
            android:id="@+id/btn_continue_play"
            android:layout_width="0dp"
            android:layout_height="40dp"
            android:layout_margin="8dp"
            android:layout_weight="1"
            android:background="@drawable/btn_bg_selector"
            android:text="继续播放"/>
        <Button
            android:id="@+id/btn_exit"
            android:layout_width="0dp"
            android:layout_height="40dp"
            android:layout_margin="8dp"
            android:layout_weight="1"
            android:background="@drawable/btn_bg_selector"
            android:text="退出"/>
    </LinearLayout>
</LinearLayout>

MainActivity.java

package cn.itcast.musicplayer;

import androidx.annotation.RequiresApi;
import androidx.appcompat.app.AppCompatActivity;

import android.animation.ObjectAnimator;
import android.annotation.SuppressLint;
import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.Message;
import android.view.View;
import android.view.animation.LinearInterpolator;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity implements View.OnClickListener{
    private static SeekBar sb;
    private  static TextView tv_progress,tv_total;
    private ObjectAnimator animator;
    private MusicService.MusicControl musicControl;
    MyServiceConn conn;
    Intent intent;
    private boolean isUnbind = false;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        init();
    }
    private void init(){
        tv_progress = (TextView) findViewById(R.id.tv_progress);
        tv_total = (TextView)findViewById(R.id.tv_total);
        sb = (SeekBar) findViewById(R.id.sb);
        findViewById(R.id.btn_play).setOnClickListener(this);
        findViewById(R.id.btn_pause).setOnClickListener(this);
        findViewById(R.id.btn_continue_play).setOnClickListener(this);
        findViewById(R.id.btn_exit).setOnClickListener(this);
        intent = new Intent(this, MusicService.class);
        conn = new MyServiceConn();
        bindService(intent,conn,BIND_AUTO_CREATE);
        sb.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

            @RequiresApi(api = Build.VERSION_CODES.KITKAT)
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                if (progress == seekBar.getMax()){
                    animator.pause();
                }
            }
            @Override
            public void onStartTrackingTouch(SeekBar seekBar){

            }
            @Override
            public void onStopTrackingTouch(SeekBar seekBar){
                int progress = seekBar.getProgress();
                musicControl.seekTo(progress);
            }
        });
        @SuppressLint("WrongViewCast")
        ImageView iv_music = (ImageView) findViewById(R.id.iv_music);
        animator = ObjectAnimator.ofFloat(iv_music,"rotation",0f,360.0f);
        animator.setDuration(10000);
        animator.setInterpolator(new LinearInterpolator());
        animator.setRepeatCount(-1);
    }
    @SuppressLint("HandlerLeak")
    public static  Handler handler = new Handler(){
        @SuppressLint("SetTextI18n")
        @Override
        public void handleMessage(Message msg){
            Bundle bundle = msg.getData();
            int duration = bundle.getInt("duration");
            int currentPosition = bundle.getInt("current Position");
            sb.setMax(duration);
            sb.setProgress(currentPosition);
            int minute = duration/1000/60;
            int second = duration/1000%60;
            String strMinute;
            String strSecond;
            if (minute < 10){
                strMinute = "0" + minute;
            }else{
                strMinute = minute + "";
            }
            if (second < 10){
                strSecond = "0" + second;
            }else{
                strSecond = second + "";
        }
            tv_total.setText(strMinute+":"+strSecond);
            minute = currentPosition/1000/60;
            second = currentPosition/1000%60;
            if (minute < 10){
                strMinute = "0" + minute;
            }else{
                strMinute = minute + "";
            }
            if (second < 10){
                strSecond = "0"+second;
            }else {
                strSecond = second + "0";
            }
            tv_progress.setText(strMinute + ":"+ strSecond);

}};
    class MyServiceConn implements ServiceConnection{


        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            musicControl = (MusicService.MusicControl) service;
        }

        public void onServiceDisconnected(ComponentName name){
        }
    }
    public void unbind(boolean isUnbind){
        if (!isUnbind){
            musicControl.pausePlay();
            unbindService(conn);
            stopService(intent);
        }
    }
    @RequiresApi(api = Build.VERSION_CODES.KITKAT)
    public void onClick(View v){
        switch (v.getId()){
            case R.id.btn_play:
                musicControl.play();
                animator.start();
                break;
            case R.id.btn_pause:
                musicControl.pausePlay();
                animator.pause();
                break;
            case R.id.btn_continue_play:
                musicControl.continuePlay();
                animator.start();
                break;
            case R.id.btn_exit:
                unbind(isUnbind);
                isUnbind = true;
                finish();
                break;
        }
    }
    @Override
    protected void onDestroy(){
        super.onDestroy();
        unbind(isUnbind);
    }
}

MusicService.java

package cn.itcast.musicplayer;

import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.Binder;
import android.os.Bundle;
import android.os.IBinder;
import android.os.Message;
import android.widget.MediaController;

import java.util.Timer;
import java.util.TimerTask;

public class MusicService extends Service {
    private MediaPlayer player;
    private Timer timer;
    public MusicService() {}
    @Override
    public IBinder onBind(Intent intent){
        return new MusicControl();
        }
    @Override
    public void onCreate(){
        super.onCreate();
        player = new MediaPlayer();
        }
    public void addTimer(){
        if (timer == null) {
            timer = new Timer();
            TimerTask task = new TimerTask() {
                @Override
                public void run() {
                    if (player == null) return;
                    int duration = player.getDuration();
                    int currentPosition = player.getCurrentPosition();
                    Message msg = MainActivity.handler.obtainMessage();
                    Bundle bundle = new Bundle();
                    bundle.putInt("duration",duration);
                    bundle.putInt("currentPosition",currentPosition);
                    msg.setData(bundle);
                    MainActivity.handler.sendMessage(msg);

                }
            };
            timer.schedule(task,5,500);
        }
        }
        class MusicControl extends Binder {
        public void play(){
            try{
                player.reset();
                player=MediaPlayer.create(getApplicationContext(),R.raw.music);
                player.start();
                addTimer();
            }catch (Exception e){
                e.printStackTrace();
            }
        }
        public void pausePlay(){
            player.pause();
        }
        public void continuePlay(){
            player.start();
        }
        public void seekTo(int progress){
            player.seekTo(progress);
        }
        }
        @Override
        public void onDestroy(){

        super.onDestroy();
        if (player == null) return;
        if (player.isPlaying())player.stop();
        player.release();
        player = null;
        }
    }

Btn_bg_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true">
        <shape android:shape="rectangle">
            <corners android:radius="3dp"/>
            <solid android:color="#d4d4d4"/>
        </shape>
    </item>
    <item android:state_pressed="false">
        <shape android:shape="rectangle">
            <corners android:radius="3dp"/>
            <solid android:color="#ffffff"/>
        </shape>
    </item>
</selector>
评论
添加红包

请填写红包祝福语或标题

个

红包个数最小为10个

元

红包金额最低5元

当前余额3.43元 前往充值 >
需支付：10.00元
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付元
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明：

1.余额是钱包充值的虚拟货币，按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载，可以购买VIP、付费专栏及课程。

余额充值