调用NotificationChannel.setSound()方法来设置/修改通知声音无效
先看下API注释
/**
* Sets the sound that should be played for notifications posted to this channel and its
* audio attributes. Notification channels with an {@link #getImportance() importance} of at
* least {@link NotificationManager#IMPORTANCE_DEFAULT} should have a sound.
*
* Only modifiable before the channel is submitted to
* {@link NotificationManager#createNotificationChannel(NotificationChannel)}.
*/
public void setSound(Uri sound, AudioAttributes audioAttributes) {
}setSound生效有两个前提，Channel的importance得大于等于NotificationManager#IMPORTANCE_DEFAULT，其次setSound只有在第一次createNotificationChannel的时候生效
误区二 使用deleteNotificationChannel删除Channel然后再重新创建
先看下API注释
/**
* Deletes the given notification channel.
*
* <p>If you {@link #createNotificationChannel(NotificationChannel) create} a new channel with
* this same id, the deleted channel will be un-deleted with all of the same settings it
* had before it was deleted.
*/
public void deleteNotificationChannel(String channelId) {
}同误区一，既然setSound只有在第一次createNotificationChannel的时候生效，那么我们删除掉Channel再重新创建不就可以了么
通过注释可以看到当我们删除了指定id的channel，当我们重新创建同一个id的channel的时候，新设置的属性都是无效的，会和以前删除的那个channel一模一样
设置通知铃声
private fun initNotifyChannel() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
val channelId = ""
val channelName = ""
//test.ogg传递test即可
val sound = getSound(applicationContext.packageName, "raw文件名字", resources)
val channel = NotificationChannel(
channelId, channelName, NotificationManager.IMPORTANCE_HIGH
)
channel.importance = NotificationManager.IMPORTANCE_HIGH
channel.setSound(sound, Notification.AUDIO_ATTRIBUTES_DEFAULT)
channel.enableVibration(true)
val service =
(getSystemService(Context.NOTIFICATION_SERVICE) as? NotificationManager)
service?.let {
if (it.getNotificationChannel(channelId) == null) {
service.createNotificationChannel(channel)
}
}
}
}
private fun getSound(pkgName: String, soundName: String, resources: Resources): Uri? {
return if (TextUtils.isEmpty(soundName)) {
null
} else {
val soundId = resources.getIdentifier(soundName, "raw", pkgName)
if (soundId != 0) {
return Uri.parse("android.resource://$pkgName/raw/$soundName")
}
return RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION)
}
}铃声文件必须存放在应用的/res/raw路径下，例如“/res/raw/shake.mp3”，对应sound值参数为“/raw/shake”，支持的格式包括MP3、WAV、MPEG等
oppo手机会有兼容性问题，导致声音只会生效一次，原因待定
其他
选中铃声进行播放一下
val mRingtone = RingtoneManager.getRingtone(this, Settings.System.DEFAULT_NOTIFICATION_URI)
mRingtone?.play()参考文档