Android(安卓)8.0 前台服务

记录下写的一个前台服务demo code
import android.app.Notification;import android.app.NotificationChannel;import android.app.NotificationManager;import android.app.Service;import android.content.Context;import android.content.Intent;import android.graphics.BitmapFactory;import android.graphics.Color;import android.os.Build;import android.os.IBinder;import com.demo.example.R;public class TestServices extends Service {    private final String CHANNEL_ID = "TEST_SERVICE_ID";    private final String CHANNEL_NAME = "渠道一";    private final String contentSub = "小标题";    private final String contentTitle = "标题";    private final String contentText = "测试前台服务";    Notification notification;    Notification.Builder builder;    @Override    public IBinder onBind(Intent intent) {        return null;    }    @Override    public int onStartCommand(Intent intent, int flags, int startId) {        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {            NotificationChannel chan = new NotificationChannel(CHANNEL_ID, CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH);            chan.enableLights(true);            chan.setLightColor(Color.RED);            chan.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);            NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);            assert manager != null;            manager.createNotificationChannel(chan);            builder = new Notification.Builder(this, CHANNEL_ID);            notification = builder                    .setSmallIcon(R.mipmap.ic_launcher)                    .setContentText(contentText)                    .setSubText(contentSub)                    .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher))                    .setContentTitle(contentTitle)                    .build();        }        startForeground(1, notification);        return START_STICKY;    }}
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