做音乐播放器，必然要用到通知栏，由于通知栏很多版本都有改动，一些厂商也做了调整，适配起来比较麻烦，能用系统自带的就用。
这里分享一下系统媒体通知栏的适配。
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。
一，先看效果图
华为MatePad11 系统鸿蒙3.0
华为HONOR Pad 6 系统鸿蒙2.0
小米 NOTE PRO 系统7.0
华为Mate 8 系统8.0
魅族6T 系统7.0
锤子 系统11
OPPO 系统12
在系统7.0锁屏页效果
二，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:
}
};
}
到此这篇关于Android媒体通知栏多系统适配实例讲解的文章就介绍到这了,更多相关Android媒体通知栏适配内容请搜索编程网以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程网！
