Android Foreground Service

为了防止后台服务被系统干掉，我们需要将服务提升为前台服务。

示例代码：

需要在AndroidManifest 添加前台服务的权限 :

FOREGROUND_SERVICE

Added in API level 28 Android 9.0

public static final String FOREGROUND_SERVICE

Allows a regular application to use Service.startForeground.

Protection level: normal

Constant Value: android.permission.FOREGROUND_SERVICE

public class SampleService extends Service {    public static final String CHANNEL_ID = "com.github.103style.SampleService";    public static final String CHANNEL_NAME = "com.github.103style";    @Override    public IBinder onBind(Intent intent) {        return null;    }    @Override    public void onCreate() {        super.onCreate();        registerNotificationChannel();        int notifyId = (int) System.currentTimeMillis();        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this, CHANNEL_ID);        mBuilder                //必须要有                .setSmallIcon(R.mipmap.ic_launcher)                //可选                //.setSound(null)                //.setVibrate(null)                //...        ;        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {            mBuilder.setContentTitle(getResources().getString(R.string.app_name));        }        startForeground(notifyId, mBuilder.build());    }    /**     * 注册通知通道     */    private void registerNotificationChannel() {        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {            NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);            NotificationChannel notificationChannel = mNotificationManager.getNotificationChannel(CHANNEL_ID);            if (notificationChannel == null) {                NotificationChannel channel = new NotificationChannel(CHANNEL_ID,                        CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH);                //是否在桌面icon右上角展示小红点                channel.enableLights(true);                //小红点颜色                channel.setLightColor(Color.RED);                //通知显示                channel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);                //是否在久按桌面图标时显示此渠道的通知                //channel.setShowBadge(true);                mNotificationManager.createNotificationChannel(channel);            }        }    }}

以上

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