<activity android:name=".MusicBrowserActivity"

                  android:theme="@android:style/Theme.NoTitleBar"

                  android:exported="true"> <!-- android:exported="true" 是否支持其它应用调用当前组件。

                                            默认值：如果包含有intent-filter 默认值为true; 没有intent-filter默认值为false。 -->

            <intent-filter>

                <!-- 程序主入口 -->

                <action android:name="android.intent.action.MAIN" />

                <!-- 启动的Launcher -->

                <category android:name="android.intent.category.LAUNCHER" />

                <!-- 给其他地方/程序调用的action -->

                <action android:name="android.intent.action.MUSIC_PLAYER" />

                <!-- 隐式启动需要增加category.DEFAULT，new Intent()... -->

                <category android:name="android.intent.category.DEFAULT" />

                <!-- 和ACTION_MAIN一起使用，用来启动音乐应用程序  -->

                <category android:name="android.intent.category.APP_MUSIC" />

            </intent-filter>

        </activity>

package liudeli.music2;

import android.Manifest;

import android.annotation.SuppressLint;

import android.app.Activity;

import android.content.ComponentName;

import android.content.ServiceConnection;

import android.content.pm.PackageManager;

import android.os.Bundle;

import android.os.IBinder;

import android.os.RemoteException;

import android.support.annotation.NonNull;

import android.util.Log;

import liudeli.music2.service.IMediaPlaybackService;

import liudeli.music2.service.MediaPlaybackService;

import liudeli.music2.util.MusicUtils;

/**

 * Description：主页面入口

 * Created by Liudeli on 2017/10/27.

 * About: Liudeli

 * QICQ: 1830140442

 * Email: deliliu@vip.qq.com

 * Company: deli.liu@eques.com.cn

 * Phone: 15221634614

 * Date: 2017/10/27

 * CSDN: http://blog.csdn.net/u011967006

 */

public class MusicBrowserActivity extends Activity implements MusicUtils.Defs {

    private static final String TAG  = "MusicBrowserActivity";

    private MusicUtils.ServiceToken mToken;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        // 系统6.0权限问题

        // requestReadExternalPermission();

        // 通过SharedPreferences get上一次tab的记录

        int activeTab = MusicUtils.getIntPref(this, "activetab", R.id.artisttab);

        // 如果不等于所有tab选项，就默认[音乐人tab]

        if (activeTab != R.id.artisttab

                && activeTab != R.id.albumtab

                && activeTab != R.id.songtab

                && activeTab != R.id.playlisttab) {

            activeTab = R.id.artisttab;

        }

        // 去指定start那个Activity [音乐人][专辑][歌曲][播放列表]

        MusicUtils.activateTab(this, activeTab);

        // 我的理解是其他应用程序，来传值进行逻辑操作

        String shuf = getIntent().getStringExtra("autoshuffle");

        Log.d(TAG, "shuf:" + shuf);

        if ("true".equals(shuf)) {

            mToken = MusicUtils.bindToService(this, autoshuffle);

        }

    }

    private ServiceConnection autoshuffle = new ServiceConnection() {

        public void onServiceConnected(ComponentName classname, IBinder obj) {

            // 我们需要再次绑定，这样就可以解除绑定

            Log.d(TAG, "我们需要再次绑定，这样就可以解除绑定");

            try {

                unbindService(this);

            } catch (IllegalArgumentException e) {

            }

            IMediaPlaybackService serv = IMediaPlaybackService.Stub.asInterface(obj);

            if (serv != null) {

                try {

                    serv.setShuffleMode(MediaPlaybackService.SHUFFLE_AUTO);

                } catch (RemoteException ex) {

                }

            }

        }

        public void onServiceDisconnected(ComponentName classname) {

        }

    };

    @Override

    protected void onDestroy() {

        if (null != mToken) {

            MusicUtils.unbindFromService(mToken);

        }

        super.onDestroy();

    }

    /**

     * 系统6.0权限问题

     * @param requestCode

     * @param permissions

     * @param grantResults

     */

    @Override

    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {

        super.onRequestPermissionsResult(requestCode, permissions, grantResults);

        Log.d(TAG, "requestCode=" + requestCode + "; --->" + permissions.toString()

                + "; grantResult=" + grantResults.toString());

        switch (requestCode) {

            case 0: {

                if (grantResults.length > 0

                        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                    // permission was granted

                    // request successfully, handle you transactions

                    // requestReadExternalPermission();

                } else {

                    // permission denied

                    // request failed

                    // requestReadExternalPermission();

                }

                return;

            }

            default:

                break;

        }

    }

    /**

     * 系统6.0权限问题

     */

    @SuppressLint("NewApi")

    private void requestReadExternalPermission() {

        if (checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE)

                != PackageManager.PERMISSION_GRANTED) {

            Log.d(TAG, "READ permission IS NOT granted...");

            if (shouldShowRequestPermissionRationale(Manifest.permission.READ_EXTERNAL_STORAGE)) {

                Log.d(TAG, "11111111111111");

            } else {

                // 0 是自己定义的请求coude

                requestPermissions(new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 0);

                Log.d(TAG, "222222222222");

            }

        } else {

            Log.d(TAG, "READ permission is granted...");

        }

    }

}