我的应用程序播放音乐，当用户通过从屏幕顶部（或平板电脑屏幕右下方的通用屏幕）滑动打开通知屏幕时，我想向他们显示一个按钮以停止当前正在播放的音乐并启动如果他们想要它又一次。
我不打算将小部件放在用户的主屏幕上，而只是放入通知中。我怎么能这样做？
答案 0 :(得分：6)
向通知添加操作按钮
Intent snoozeIntent = new Intent(this, MyBroadcastReceiver.class);
snoozeIntent.setAction(ACTION_SNOOZE);
snoozeIntent.putExtra(EXTRA_NOTIFICATION_ID, 0);
PendingIntent snoozePendingIntent =
PendingIntent.getBroadcast(this, 0, snoozeIntent, 0);
NotificationCompat.Builder mBuilder = new
NotificationCompat.Builder(this, CHANNEL_ID)
.setSmallIcon(R.drawable.notification_icon)
.setContentTitle("My notification")
.setContentText("Hello World!")
.setPriority(NotificationCompat.PRIORITY_DEFAULT)
.setContentIntent(pendingIntent)
.addAction(R.drawable.ic_snooze, getString(R.string.snooze),
snoozePendingIntent);
有关详细信息，请访问 https://developer.android.com/training/notify-user/build-notification.html
答案 1 :(得分：3)
您可以为操作创建一个意图（在这种情况下停止播放）并将其添加为通知的操作按钮。
Intent snoozeIntent = new Intent(this, MyBroadcastReceiver.class);
snoozeIntent.setAction(ACTION_SNOOZE);
snoozeIntent.putExtra(EXTRA_NOTIFICATION_ID, 0);
PendingIntent snoozePendingIntent =
PendingIntent.getBroadcast(this, 0, snoozeIntent, 0);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this, CHANNEL_ID)
.setSmallIcon(R.drawable.notification_icon)
.setContentTitle("My notification")
.setContentText("Hello World!")
.setPriority(NotificationCompat.PRIORITY_DEFAULT)
.setContentIntent(pendingIntent)
.addAction(R.drawable.ic_snooze, getString(R.string.snooze),
snoozePendingIntent);
请参阅Android文档here
答案 2 :(得分：3)
// It shows buttons on lock screen (notification).
Notification notification = new Notification.Builder(context)
.setVisibility(Notification.VISIBILITY_PUBLIC)
.setSmallIcon(R.drawable.NotIcon)
.addAction(R.drawable.ic_prev, "button1",ButtonOneScreen)
.addAction(R.drawable.ic_pause, "button2", ButtonTwoScreen)
.....
.setStyle(new Notification.MediaStyle()
.setShowActionsInCompactView(1)
.setMediaSession(mMediaSession.getSessionToken())
.setContentTitle("your choice")
.setContentText("Again your choice")
.setLargeIcon(buttonIcon)
.build();
请参阅此处了解详情Click here
答案 3 :(得分：1)
经过测试的android Pie工作代码。这些都放在同一个服务类中。
显示通知
public void setNotification() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
{
NotificationChannel channel = new NotificationChannel("a", "status", NotificationManager.IMPORTANCE_DEFAULT);
channel.setDescription("notifications");
notificationManager = getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel);
}
else
notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
Receiver.service = this;
Notification.MediaStyle style = new Notification.MediaStyle();
notification = new Notification.Builder(this)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("Notification")
.addAction(R.drawable.close_icon, "quit_action", makePendingIntent("quit_action"))
.setStyle(style);
style.setShowActionsInCompactView(0);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
{
notification.setChannelId("a");
}
// notificationManager.notify(123 , notification.build()); // pre-oreo
startForeground(126, notification.getNotification());
}
辅助功能：
public PendingIntent makePendingIntent(String name)
{
Intent intent = new Intent(this, FloatingViewService.Receiver.class);
intent.setAction(name);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);
return pendingIntent;
}
要处理这些操作：
static public class Receiver extends BroadcastReceiver {
static FloatingViewService service;
@Override
public void onReceive(Context context, Intent intent)
{
String whichAction = intent.getAction();
switch (whichAction)
{
case "quit_action":
service.stopForeground(true);
service.stopSelf();
return;
}
}
}
您还需要更新清单：
<receiver android:name=".FloatingViewService$Receiver">
<intent-filter>
<action android:name="quit_action" />
</intent-filter>
</receiver>
答案 4 :(得分：1)
您可以按如下所示添加按钮，也可以对该按钮执行操作，如下所示，我已经为我完成了操作。
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.ic_logo)
.setAutoCancel(true)
.setContentTitle(name)
.setContentText(body)
.setGroupSummary(true)
.addAction(android.R.drawable.ic_menu_directions, "Mark as read", morePendingIntent);
// morePendingIntent（做您的工作）
PendingIntent morePendingIntent = PendingIntent.getBroadcast(
this,
REQUEST_CODE_MORE,
new Intent(this, NotificationReceiver.class)
.putExtra(KEY_INTENT_MORE, REQUEST_CODE_MORE)
.putExtra("bundle", object.toString()),
PendingIntent.FLAG_UPDATE_CURRENT
);
答案 5 :(得分：0)
我将尝试提供我已经使用的解决方案，并且大多数音乐播放器也使用相同的技术在通知栏中显示播放器控件。
我正在运行一项服务，用于管理Media Player及其所有控件。活动用户控件通过向服务发送Intents来与服务交互，例如
Intent i = new Intent(MainActivity.this, MyRadioService.class);
i.setAction(Constants.Player.ACTION_PAUSE);
startService(i);
接收意图并在Service类中执行操作我在服务的onStartCommand方法中使用以下代码
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
if (intent.getAction().equals(Constants.Player.ACTION_PAUSE)) {
if(mediaPlayer.isPlaying()) {
pauseAudio();
}
}
现在要准确回答您的问题，以显示播放控件的通知。您可以调用以下方法来显示带控件的通知。
// showNotification
private void startAppInForeground() {
// Start Service in Foreground
// Using RemoteViews to bind custom layouts into Notification
RemoteViews views = new RemoteViews(getPackageName(),
R.layout.notification_status_bar);
// Define play control intent
Intent playIntent = new Intent(this, MyRadioService.class);
playIntent.setAction(Constants.Player.ACTION_PLAY);
// Use the above play intent to set into PendingIntent
PendingIntent pplayIntent = PendingIntent.getService(this, 0,
playIntent, 0);
// binding play button from layout to pending play intent defined above
views.setOnClickPendingIntent(R.id.status_bar_play, pplayIntent);
views.setImageViewResource(R.id.status_bar_play,
R.drawable.status_bg);
Notification status = null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
status = new Notification.Builder(this).build();
}
status.flags = Notification.FLAG_ONGOING_EVENT;
status.icon = R.mipmap.ic_launcher;
status.contentIntent = pendingIntent;
startForeground(Constants.FOREGROUND_SERVICE, status);
} 希望这对你有所帮助。而且你将能够实现你想要的。有一个快乐的编码:)
答案 6 :(得分：0)
我认为，在Ankit Gupta答案旁边，您可以使用MediaSession（API> 21）添加本机mediaController视图：
notificationBuilder
.setStyle(new Notification.MediaStyle()
.setShowActionsInCompactView(new int[]{playPauseButtonPosition}) // show only play/pause in compact view
.setMediaSession(mSessionToken))
.setColor(mNotificationColor)
.setSmallIcon(R.drawable.ic_notification)
.setVisibility(Notification.VISIBILITY_PUBLIC)
.setUsesChronometer(true)
.setContentIntent(createContentIntent(description)) // Create an intent that would open the UI when user clicks the notification
.setContentTitle(description.getTitle())
.setContentText(description.getSubtitle())
.setLargeIcon(art);
来源：tutorial
您还可以创建自定义视图并将其显示在通知区域中，第一个答案here很棒。
答案 7 :(得分：0)
我不知道这是不是正确的方法，但是它可以工作。
BroadCastReceiver类，以便在按下按钮时接收数据。public class MyBroadCastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String log = "URI: " + intent.toUri(Intent.URI_INTENT_SCHEME);
Log.d("my", "LOG:::::::" + log);
}
}
Intent intent = new Intent();
intent.setAction("unique_id");
intent.putExtra("key", "any data you want to send when button is pressed");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, REQUEST_CODE, intent, 0);
BroadcastReceiver br = new MyBroadCastReceiver();
IntentFilter filter = new IntentFilter("unique_id");
registerReceiver(br, filter);
现在，如果您想在按下按钮时执行某些操作，则可以在onReceive()类的MyBroadCastReceiver方法中进行操作。