java.lang.RuntimeException: invalid channel for service notification

在应用中使用台前服务同时创建通知报：

Android 在API26之后原本的NotificationCompat.Builder (Context context)被废弃，创建通知需要使用新的构造器NotificationCompat.Builder (Context context, String channelId)

String CHANNEL_ID = "com.example.test";
String CHANNEL_NAME = "TEST";
NotificationChannel notificationChannel = null;
NotificationCompat.Builder builder = null;

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
    notificationChannel = new NotificationChannel(CHANNEL_ID, CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH);
    NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    notificationManager.createNotificationChannel(notificationChannel);
}

Intent intent = new Intent(this, HomeActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);

builder = new NotificationCompat.Builder(this, CHANNEL_ID).
        setContentTitle(getResources().getString(R.string.app_name)).
        setContentText(getResources().getString(R.string.notice_001)).
        setWhen(System.currentTimeMillis()).
        setSmallIcon(R.mipmap.app_icon).
        setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.app_icon)).
        setContentIntent(pendingIntent).setDefaults(NotificationCompat.FLAG_ONGOING_EVENT)
        .setPriority(Notification.PRIORITY_MAX);


if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {//SDK版本>=21才能设置悬挂式通知栏
    builder.setCategory(String.valueOf(Notification.FLAG_ONGOING_EVENT))
            .setVisibility(Notification.VISIBILITY_PUBLIC)
            .setColor(getResources().getColor(R.color.white));
    Intent intent2 = new Intent();
    PendingIntent pi = PendingIntent.getBroadcast(this, 0, intent2, 0);
    builder.setFullScreenIntent(pi, true);
}
Notification notification = builder.build();
startForeground(1, notification);

注意的是：API28以后，申请前台服务需要静态注册权限，不然的话会报对应的权限异常

<uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>

效果：

来源：CSDN

作者：liuhaha1015

链接：https://blog.csdn.net/NewActivity/article/details/103243124

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