Android实现仿银行APP回退至后台，并在通知栏里显示

给应用实现仿银行APP回退至后台，在通知栏或状态栏里显示通知提示

使用广播接收形式，实现在通知栏里显示常驻通知：

public class LifeCircleReceiver extends BroadcastReceiver {
    private NotificationManager notificationManager;
    private Activity activity;
    private static int notifyId;
    private static final int NOTIFY_ID = 10001;

    public LifeCircleReceiver(Activity activity) {
        this.activity = activity;
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        NLog.i(Constants.TAG, "LifeCircleReceiver.onReceive");
        notificationManager = (NotificationManager) activity.getSystemService(Context.NOTIFICATION_SERVICE);

        boolean background = intent.getBooleanExtra("background", false);
        if (!background) {
            if (notifyId > 0) {
                notificationManager.cancel(notifyId);  //清除ID号为常量notifyId的通知
                notificationManager.cancelAll();  //清除全部通知
            }
            return;
        }

        String channel = AnalyticsConfig.getChannel(context);
        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context, channel);
        //PendingIntent 跳转动作
        PendingIntent pendingIntent = PendingIntent.getActivity(activity, 0, activity.getIntent(), 0);
        mBuilder.setSmallIcon(R.mipmap.ic_launcher)
                .setContentTitle(context.getResources().getString(R.string.app_name))
                .setContentText(context.getResources().getString(R.string.app_run_background))
                .setContentIntent(pendingIntent);
        Notification notification = mBuilder.build();
        //notification.icon = R.drawable.logo;
        //在通知栏上点击此通知后不会自动清除此通知
        notification.flags = Notification.FLAG_ONGOING_EVENT;
        //设置显示通知时的默认的发声、震动、Light效果
        //notification.defaults = Notification.DEFAULT_VIBRATE;
        notifyId = NOTIFY_ID;
        notificationManager.notify(notifyId, notification);
    }

}