今天小编给大家分享一下Android媒体通知栏多系统适配怎么实现的相关知识点，内容详细，逻辑清晰，相信大部分人都还太了解这方面的知识，所以分享这篇文章给大家参考一下，希望大家阅读完这篇文章后有所收获，下面我们一起来了解一下吧。
需要考虑的问题如下：
1，通知栏适配，音乐播放需要常驻，所以要维护一个通知栏。
2，音控处理，在安卓7.0及以下，通过MediaSessionCompat可控制锁屏页音乐播放。
3，对于耳机的处理，不管是线耳机还是蓝牙耳机，耳机控制播放暂停，下一曲上一曲等操作。
4，打电话处理，在听音乐的同时如果电话进来后挂断，希望可以自动播放。
5，音频播放焦点处理，如果有别的应用抢占焦点可进行暂停播放。还有就是进入APP时想拥有音频焦点，都可以通过AudioManager进行处理。
实现方式
创建通知管理类NotifyBuilderManager代码如下：
package com.idujing.myapplication.manager;import android.annotation.SuppressLint;import android.app.Notification;import android.app.NotificationChannel;import android.app.NotificationManager;import android.app.PendingIntent;import android.app.Service;import android.content.Context;import android.content.Intent;import android.os.Build;import androidx.core.app.NotificationCompat;import com.idujing.myapplication.R;public class NotifyBuilderManager { private final String TAG = getClass().getSimpleName(); public static final String ACTION_NEXT = "com.idujing.play.notify.next";// 下一首 public static final String ACTION_PREV = "com.idujing.play.notify.prev";// 上一首 public static final String ACTION_PLAY_PAUSE = "com.idujing.play.notify.play_state";// 播放暂停广播 private static final int NOTIFICATION_ID = 0x123; private Service mContext; private Notification mNotification; private NotificationManager mNotificationManager; private NotificationCompat.Builder mNotificationBuilder; private MediaSessionManager mSessionManager; private PendingIntent mPendingPlay; private PendingIntent mPendingPre; private PendingIntent mPendingNext; private boolean isRunningForeground = false; public boolean isRunningForeground() { return isRunningForeground; } public NotifyBuilderManager(Service context) { this.mContext = context; mSessionManager = new MediaSessionManager(context, null); } private void initNotify() { mNotificationManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE); Class<?> clazz = null; try { clazz = Class.forName("具体的播放器类名"); } catch (ClassNotFoundException e) { e.printStackTrace(); } // 适配12.0及以上 int flag; if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) { flag = PendingIntent.FLAG_IMMUTABLE; } else { flag = PendingIntent.FLAG_UPDATE_CURRENT; } //绑定事件通过创建的具体广播去接收即可。 Intent infoIntent = new Intent(mContext, clazz); PendingIntent pendingInfo = PendingIntent.getActivity(mContext, 0, infoIntent, flag); Intent preIntent = new Intent(); preIntent.setAction(ACTION_PREV); mPendingPre = PendingIntent.getBroadcast(mContext, 1, preIntent, flag); Intent playIntent = new Intent(); playIntent.setAction(ACTION_PLAY_PAUSE); mPendingPlay = PendingIntent.getBroadcast(mContext, 2, playIntent, flag); Intent nextIntent = new Intent(); nextIntent.setAction(ACTION_NEXT); mPendingNext = PendingIntent.getBroadcast(mContext, 3, nextIntent, PendingIntent.FLAG_IMMUTABLE); androidx.media.app.NotificationCompat.MediaStyle style = new androidx.media.app.NotificationCompat.MediaStyle() .setShowActionsInCompactView(0, 1, 2) .setMediaSession(mSessionManager.getMediaSession()); mNotificationBuilder = new NotificationCompat.Builder(mContext, initChannelId()) .setSmallIcon(R.mipmap.ic_launcher) .setPriority(NotificationCompat.PRIORITY_MAX) .setContentIntent(pendingInfo) .setVisibility(NotificationCompat.VISIBILITY_PUBLIC) .setStyle(style); isRunningForeground = true; } private String initChannelId() { // 通知渠道的id String id = "music_01"; // 用户可以看到的通知渠道的名字. CharSequence name = mContext.getString(R.string.app_name); // 用户可以看到的通知渠道的描述 String description = "通知栏播放控制"; if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { int importance = NotificationManager.IMPORTANCE_LOW; NotificationChannel channel = new NotificationChannel(id, name, importance); channel.setDescription(description); channel.enableLights(false); channel.enableVibration(false); mNotificationManager.createNotificationChannel(channel); } return id; } public void cancelNotification() { if (mNotificationManager != null) { mContext.stopForeground(true); mNotificationManager.cancel(NOTIFICATION_ID); isRunningForeground = false; } } private void updateCoverSmall() { Glide.with(mContext).asBitmap() .load(url) .into(new CustomTarget<Bitmap>() { @Override public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) { mNotificationBuilder.setLargeIcon(resource); mNotification = mNotificationBuilder.build(); mNotificationManager.notify(NOTIFICATION_ID, mNotification); } @Override public void onLoadCleared(@Nullable Drawable placeholder) { } @Override public void onLoadFailed(@Nullable Drawable errorDrawable) { super.onLoadFailed(errorDrawable); Log.e(TAG, "onLoadFailed: "); } }); } @SuppressLint("RestrictedApi") public void updateNotification(boolean isMusicPlaying) { if (mNotification == null) { initNotify(); } mSessionManager.updateMetaData(); if (mNotificationBuilder != null) { int playButtonResId = isMusicPlaying ? android.R.drawable.ic_media_pause : android.R.drawable.ic_media_play; if (!mNotificationBuilder.mActions.isEmpty()) { mNotificationBuilder.mActions.clear(); } mNotificationBuilder .addAction(android.R.drawable.ic_media_previous, "Previous", mPendingPre) // #0 .addAction(playButtonResId, "Pause", mPendingPlay) // #1 .addAction(android.R.drawable.ic_media_next, "Next", mPendingNext); mNotificationBuilder.setContentTitle("主标题"); mNotificationBuilder.setContentText("副标题"); updateCoverSmall(); mNotification = mNotificationBuilder.build(); mContext.startForeground(NOTIFICATION_ID, mNotification); mNotificationManager.notify(NOTIFICATION_ID, mNotification); } }}创建音控管理类MediaSessionManager代码如下：
package com.idujing.myapplication.manager;import android.content.Context;import android.os.Handler;import android.support.v4.media.MediaMetadataCompat;import android.support.v4.media.session.MediaSessionCompat;import android.support.v4.media.session.PlaybackStateCompat;public class MediaSessionManager { private static final String TAG = "MediaSessionManager"; //指定可以接收的来自锁屏页面的按键信息 private static final long MEDIA_SESSION_ACTIONS = PlaybackStateCompat.ACTION_PLAY | PlaybackStateCompat.ACTION_PAUSE | PlaybackStateCompat.ACTION_PLAY_PAUSE | PlaybackStateCompat.ACTION_SKIP_TO_NEXT | PlaybackStateCompat.ACTION_SKIP_TO_PREVIOUS | PlaybackStateCompat.ACTION_STOP | PlaybackStateCompat.ACTION_SEEK_TO; private final Context mContext; private MediaSessionCompat mMediaSession; private Handler mHandler; public MediaSessionManager(Context context, Handler handler) { this.mContext = context; this.mHandler = handler; setupMediaSession(); } protected boolean isPlaying() { //具体去实现 return false; } private void setupMediaSession() { mMediaSession = new MediaSessionCompat(mContext, TAG); //指明支持的按键信息类型 mMediaSession.setFlags( MediaSessionCompat.FLAG_HANDLES_MEDIA_BUTTONS | MediaSessionCompat.FLAG_HANDLES_TRANSPORT_CONTROLS ); mMediaSession.setCallback(callback, mHandler); mMediaSession.setActive(true); } public void updateMetaData() { MediaMetadataCompat.Builder metaDta = new MediaMetadataCompat.Builder() .putString(MediaMetadataCompat.METADATA_KEY_TITLE, "title") .putString(MediaMetadataCompat.METADATA_KEY_ARTIST, "Artist") .putString(MediaMetadataCompat.METADATA_KEY_ALBUM, "Album") .putString(MediaMetadataCompat.METADATA_KEY_ALBUM_ARTIST, "Artist") .putLong(MediaMetadataCompat.METADATA_KEY_DURATION, 100); mMediaSession.setMetadata(metaDta.build()); int state = isPlaying() ? PlaybackStateCompat.STATE_PLAYING : PlaybackStateCompat.STATE_PAUSED; mMediaSession.setPlaybackState(new PlaybackStateCompat.Builder() .setActions(MEDIA_SESSION_ACTIONS) .setState(state, 0, 1) .build()); //锁屏页封面设置，高本版没有效果，因为通知栏权限调整。 Glide.with(mContext).asBitmap(). load(url) .into(new CustomTarget<Bitmap>() { @Override public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) { metaDta.putBitmap(MediaMetadataCompat.METADATA_KEY_ALBUM_ART, resource); mMediaSession.setMetadata(metaDta.build()); } @Override public void onLoadCleared(@Nullable Drawable placeholder) { } }); } public MediaSessionCompat.Token getMediaSession() { return mMediaSession.getSessionToken(); } public void release() { mMediaSession.setCallback(null); mMediaSession.setActive(false); mMediaSession.release(); } private MediaSessionCompat.Callback callback = new MediaSessionCompat.Callback() { @Override public void onPlay() { //具体自己实现 } @Override public void onPause() { } @Override public void onSkipToNext() { } @Override public void onSkipToPrevious() { } @Override public void onStop() { } @Override public void onSeekTo(long pos) { } };}创建音频焦点控制类AudioAndFocusManager
通过音频焦点控制，不管是别的应用抢占焦点，还是打电话都可以接收到状态。
package com.idujing.myapplication.manager;import android.content.Context;import android.media.AudioFocusRequest;import android.media.AudioManager;import android.os.Build;import android.util.Log;import androidx.annotation.RequiresApi;public class AudioAndFocusManager { private static final String TAG = "AudioAndFocusManager"; private AudioManager mAudioManager; @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP) public AudioAndFocusManager(Context mContext) { mAudioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE); } public void requestAudioFocus() { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { AudioFocusRequest mAudioFocusRequest = new AudioFocusRequest.Builder(AudioManager.AUDIOFOCUS_GAIN) .setOnAudioFocusChangeListener(audioFocusChangeListener) .build(); int res = mAudioManager.requestAudioFocus(mAudioFocusRequest); if (res == 1) { Log.e(TAG, "res=" + true); } } else { if (audioFocusChangeListener != null) { boolean result = AudioManager.AUDIOFOCUS_REQUEST_GRANTED == mAudioManager.requestAudioFocus(audioFocusChangeListener, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN); Log.e(TAG, "requestAudioFocus result=" + result); } } } public void abandonAudioFocus() { if (audioFocusChangeListener != null) { boolean result = AudioManager.AUDIOFOCUS_REQUEST_GRANTED == mAudioManager.abandonAudioFocus(audioFocusChangeListener); Log.e(TAG, "abandonAudioFocus result=" + result); } } private AudioManager.OnAudioFocusChangeListener audioFocusChangeListener = focusChange -> { switch (focusChange) { case AudioManager.AUDIOFOCUS_LOSS://失去音频焦点 case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT://暂时失去焦点 break; case AudioManager.AUDIOFOCUS_GAIN://获取焦点 break; default: } };}以上就是“Android媒体通知栏多系统适配怎么实现”这篇文章的所有内容，感谢各位的阅读！相信大家阅读完这篇文章都有很大的收获，小编每天都会为大家更新不同的知识，如果还想学习更多的知识，请关注编程网行业资讯频道。
