解决Android O 错误Context.startForegroundService() did not then call Service.startForeground

原因分析
Android 8.0 有以下调整：
Android 8.0 的应用尝试在不允许其创建后台服务的情况下使用 startService() 函数，则该函数将引发一个 IllegalStateException。

新的 Context.startForegroundService() 函数将启动一个前台服务。现在，即使应用在后台运行，系统也允许其调用 Context.startForegroundService()。
应用必须在创建服务后的五秒内调用该服务的 startForeground() 函数。
app代码：

Intent intent = new Intent(this, TestService.class);
intent.putExtra("type",1);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
startForegroundService(intent);
} else {
startService(intent);
}

TestService代码

private NotificationManager notificationManager;
private static final String NOTIFICATION_ID = "channedId";
private static final String NOTIFICATION_NAME = "channedId";
@Override
public void onCreate() {
notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
//创建NotificationChannel
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
NotificationChannel channel = new NotificationChannel(NOTIFICATION_ID, NOTIFICATION_NAME, NotificationManager.IMPORTANCE_HIGH);
notificationManager.createNotificationChannel(channel);
}
startForeground(1,getNotification());
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
private Notification getNotification() {
Notification.Builder builder = new Notification.Builder(this)
.setSmallIcon(R.drawable.ic_launcher_background)
.setContentTitle("测试服务")
.setContentText("我正在运行");
//设置Notification的ChannelID,否则不能正常显示
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
builder.setChannelId(NOTIFICATION_ID);
}
Notification notification = builder.build();
return notification;
}

最后

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