小编Yev*_*nii的帖子

如何在小米设备上以编程方式启用抬头通知？某些应用程序（例如 Telegram）默认启用此权限。

设置截图：https : //imgur.com/a/D48G8Mz

@RequiresApi(Build.VERSION_CODES.O)
private String createNotificationChannel( ) {
    NotificationChannel channel = new NotificationChannel(CHANNEL_ID, CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH);
    channel.enableLights(true);
    channel.setLightColor(Color.RED);
    channel.enableVibration(true);
    channel.setSound(createNotificationSound(),
            new AudioAttributes.Builder()
                    .setUsage(AudioAttributes.USAGE_NOTIFICATION)
                    .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
                    .build());
    channel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);

    NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    manager.createNotificationChannel(channel);

    return CHANNEL_ID;
}

通知

    String channelId = "";
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        channelId = createNotificationChannel();
    }

    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(context, channelId)
            .setLargeIcon(icon)
            .setSmallIcon(R.mipmap.ic_mipmap_launcher)
            .setContentTitle("Title")
            .setTicker(getResources().getString(R.string.app_name))
            .setContentText("Text")
            .setSound(createNotificationSound(), AudioManager.STREAM_NOTIFICATION)
            .setAutoCancel(true)
            .setContentIntent(pendingIntent)
            .setChannelId(channelId)
            .setPriority(Notification.PRIORITY_HIGH);

    NotificationCompat.InboxStyle inboxStyle =
            new NotificationCompat.InboxStyle();
    notificationBuilder.setStyle(inboxStyle);
    NotificationManager notificationManager =
            (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); …

我正在尝试启动前台服务，但收到 NoSuchMethodError。它说找不到 startForeground，但看起来它是存在的。我确实拥有清单文件中声明的服务和 android.permission.FOREGROUND_SERVICE 权限。

public void startForegroundService(Intent intent) {
    Log.d(TAG, "startForegroundService: " + intent);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        getContext().startForegroundService(intent);
    } else {
        getContext().startService(intent);
    }
}

并收到此错误：

java.lang.NoSuchMethodError: No virtual method startForeground(ILandroid/app/Notification;I)V in class Lcom/volnoor/backup/core/sync/BaseForegroundService; or its super classes (declaration of 'com.volnoor.backup.core.sync.BaseForegroundService' appears in /data/app/com.volnoor.backup-aFOxNxXCGe_PmUbYxrrdHw==/base.apk!classes2.dex)
    at com.volnoor.backup.core.sync.BaseForegroundService.onStartCommand(BaseForegroundService.java:27)
    at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3567)
    at android.app.ActivityThread.-wrap20(Unknown Source:0)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1718)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:164)
    at android.app.ActivityThread.main(ActivityThread.java:6687)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:810)

驾驶服务：

public class DriveService extends BaseForegroundService {

    @Override
    protected int getId() { …