做音樂播放器，必然要用到通知欄，由于通知欄很多版本都有改動，一些廠商也做了調(diào)整，適配起來比較麻煩，能用系統(tǒng)自帶的就用。
這里分享一下系統(tǒng)媒體通知欄的適配。
需要考慮的問題如下：
1，通知欄適配，音樂播放需要常駐，所以要維護一個通知欄。
2，音控處理，在安卓7.0及以下，通過MediaSessionCompat可控制鎖屏頁音樂播放。
3，對于耳機的處理，不管是線耳機還是藍牙耳機，耳機控制播放暫停，下一曲上一曲等操作。
4，打電話處理，在聽音樂的同時如果電話進來后掛斷，希望可以自動播放。
5，音頻播放焦點處理，如果有別的應(yīng)用搶占焦點可進行暫停播放。還有就是進入APP時想擁有音頻焦點，都可以通過AudioManager進行處理。
一，先看效果圖
華為MatePad11 系統(tǒng)鴻蒙3.0
華為HONOR Pad 6 系統(tǒng)鴻蒙2.0
小米 NOTE PRO 系統(tǒng)7.0
華為Mate 8 系統(tǒng)8.0
魅族6T 系統(tǒng)7.0
錘子 系統(tǒng)11
OPPO 系統(tǒng)12
在系統(tǒng)7.0鎖屏頁效果
二，實現(xiàn)方式
創(chuàng)建通知管理類NotifyBuilderManager代碼如下：
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;
/**
* 音頻播放通知欄管理
*/
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";// 播放暫停廣播
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);
}
/**
* 初始化通知欄
*/
private void initNotify() {
mNotificationManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
Class<?> clazz = null;
try {
clazz = Class.forName("具體的播放器類名");
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
// 適配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;
}
//綁定事件通過創(chuàng)建的具體廣播去接收即可。
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;
}
/**
* 創(chuàng)建Notification ChannelID
*
* @return 頻道id
*/
private String initChannelId() {
// 通知渠道的id
String id = "music_01";
// 用戶可以看到的通知渠道的名字.
CharSequence name = mContext.getString(R.string.app_name);
// 用戶可以看到的通知渠道的描述
String description = "通知欄播放控制";
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;
}
/**
* 取消通知
*/
public void cancelNotification() {
if (mNotificationManager != null) {
mContext.stopForeground(true);
mNotificationManager.cancel(NOTIFICATION_ID);
isRunningForeground = false;
}
}
/**
* 設(shè)置通知欄大圖片
*/
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: ");
}
});
}
/**
* 更新狀態(tài)欄通知
*/
@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("主標(biāo)題");
mNotificationBuilder.setContentText("副標(biāo)題");
updateCoverSmall();
mNotification = mNotificationBuilder.build();
mContext.startForeground(NOTIFICATION_ID, mNotification);
mNotificationManager.notify(NOTIFICATION_ID, mNotification);
}
}
}
創(chuàng)建音控管理類MediaSessionManager代碼如下：
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;
/**
* 主要管理Android 5.0以后線控和藍牙遠程控制播放
*/
public class MediaSessionManager {
private static final String TAG = "MediaSessionManager";
//指定可以接收的來自鎖屏頁面的按鍵信息
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();
}
/**
* 是否在播放
*
* @return
*/
protected boolean isPlaying() {
//具體去實現(xiàn)
return false;
}
/**
* 初始化并激活 MediaSession
*/
private void setupMediaSession() {
mMediaSession = new MediaSessionCompat(mContext, TAG);
//指明支持的按鍵信息類型
mMediaSession.setFlags(
MediaSessionCompat.FLAG_HANDLES_MEDIA_BUTTONS |
MediaSessionCompat.FLAG_HANDLES_TRANSPORT_CONTROLS
);
mMediaSession.setCallback(callback, mHandler);
mMediaSession.setActive(true);
}
/**
* 更新正在播放的音樂信息，切換歌曲時調(diào)用
*/
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());
//鎖屏頁封面設(shè)置，高本版沒有效果，因為通知欄權(quán)限調(diào)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();
}
/**
* 釋放MediaSession，退出播放器時調(diào)用
*/
public void release() {
mMediaSession.setCallback(null);
mMediaSession.setActive(false);
mMediaSession.release();
}
/**
* API 21 以上 耳機多媒體按鈕監(jiān)聽 MediaSessionCompat.Callback
*/
private MediaSessionCompat.Callback callback = new MediaSessionCompat.Callback() {
@Override
public void onPlay() {
//具體自己實現(xiàn)
}
@Override
public void onPause() {
}
@Override
public void onSkipToNext() {
}
@Override
public void onSkipToPrevious() {
}
@Override
public void onStop() {
}
@Override
public void onSeekTo(long pos) {
}
};
}
創(chuàng)建音頻焦點控制類AudioAndFocusManager文章來源：http://www.zghlxwxcb.cn/news/detail-729825.html
通過音頻焦點控制，不管是別的應(yīng)用搶占焦點，還是打電話都可以接收到狀態(tài)。文章來源地址http://www.zghlxwxcb.cn/news/detail-729825.html
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;
/**
* Description: 主要用來管理音頻焦點
*/
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);
}
/**
* 請求音頻焦點
*/
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);
}
}
}
/**
* 關(guān)閉音頻焦點
*/
public void abandonAudioFocus() {
if (audioFocusChangeListener != null) {
boolean result = AudioManager.AUDIOFOCUS_REQUEST_GRANTED ==
mAudioManager.abandonAudioFocus(audioFocusChangeListener);
Log.e(TAG, "abandonAudioFocus result=" + result);
}
}
/**
* 音頻焦點改變監(jiān)聽器
*/
private AudioManager.OnAudioFocusChangeListener audioFocusChangeListener = focusChange -> {
switch (focusChange) {
case AudioManager.AUDIOFOCUS_LOSS://失去音頻焦點
case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT://暫時失去焦點
break;
case AudioManager.AUDIOFOCUS_GAIN://獲取焦點
break;
default:
}
};
}
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