Android前台Service

前台Service

标签（空格分隔）： Service android

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Service默认是运行在后台的，在内存比较紧缺的时候，容易被回收。所以可以将Service设置为前台Service。下面是具体实现。

public class WeatherService extends Service {
    @Override
    public void onCreate() {
        super.onCreate();
        showNotification();
    }


    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }


    private void showNotification() {
        NotificationCompat.Builder mBuilder =
                (NotificationCompat.Builder) new NotificationCompat.Builder(this)
                .setSmallIcon(R.mipmap.ic_launcher)
                .setContentTitle("不要直接用字符串")
                .setContentText("这里作为演示而已");
        // 创建通知被点击时触发的Intent
        Intent resultIntent = new Intent(this, MainActivity.class);

        // 创建任务栈Builder
        TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
        stackBuilder.addParentStack(MainActivity.class);
        stackBuilder.addNextIntent(resultIntent);
        PendingIntent resultPendingIntent =
                stackBuilder.getPendingIntent(
                        0, PendingIntent.FLAG_UPDATE_CURRENT);
        mBuilder.setContentIntent(resultPendingIntent);

        NotificationManager mNotifyMgr =
                (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        // 构建通知
        final Notification notification = mBuilder.build();
        // 显示通知
        mNotifyMgr.notify(123, notification);
        // 启动为前台服务
        startForeground(123, notification);
    }
}