android - ActivityManager.getRunningTasks 已弃用 android

Question

我正在 android 中处理推送通知，我正在使用以下方法显示通知，但问题是现在 ActivityManager.getRunningTasks(1);正在被弃用。从一个stackoverflow问题我读到:“你可以使用getAppTasks()返回一个List<AppTask>，你可以在其中获得RecentTaskInfo和getTaskInfo”，但我不知道如何使用它。请在这方面帮助我。

private void postNotification(Context ctx, Intent intent) {
        try {
            if (intent == null) {
                Log.d(TAG, "Receiver intent null");
            } else {
                String action = intent.getAction();
                if (action.equals("com.ziza.cy.UPDATE_STATUS")) {

                    JSONObject json = new JSONObject(intent.getExtras()
                            .getString("com.parse.Data"));

                    String type = json.getString("type");

                    if (type.equals("AlertNotification")) {

                        String msg = json.getString("header");
                        String title = "ncy";

                        ActivityManager am = (ActivityManager) ctx
                                .getSystemService(Context.ACTIVITY_SERVICE);
                        List<RunningTaskInfo> taskInfo = am.getRunningTasks(1);
                        ComponentName componentInfo = taskInfo.get(0).topActivity;

                        // don't show notification if app is in foreground
                        if (componentInfo.getPackageName().equalsIgnoreCase(
                                ctx.getPackageName())) {

                            // send broadcast receiver
                            Intent intentBroad = new Intent();
                            intentBroad.setAction(Constants.sNOTIFICATION);
                            intentBroad.putExtra("msg", msg);
                            intentBroad.putExtra("title", title
                                    + " "
                                    + taskInfo.get(0).topActivity.getClass()
                                            .getSimpleName());
                            ctx.sendBroadcast(intentBroad);
                        } else {
                            // Activity Not Running
                            // Generate Notification

                            Intent intnt = new Intent(ctx, LogInActivity.class);
                            PendingIntent contentIntent = PendingIntent
                                    .getActivity(ctx, 0, intnt, 0);
                            intnt.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
                                    | Intent.FLAG_ACTIVITY_NEW_TASK);

                            NotificationCompat.Builder builder = new NotificationCompat.Builder(
                                    ctx)
                                    .setContentTitle(title)
                                    .setContentText(msg)
                                    .setTicker(msg)
                                    .setSound(
                                            RingtoneManager
                                                    .getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
                                    .setStyle(
                                            new NotificationCompat.BigTextStyle()
                                                    .bigText(msg))
                                    .setAutoCancel(true)
                                    .setSmallIcon(R.drawable.iconed)
                                    .setOnlyAlertOnce(true)
                                    .setDefaults(Notification.DEFAULT_VIBRATE);

                            Uri alarmSound = RingtoneManager
                                    .getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
                            builder.setSound(alarmSound);
                            builder.setContentIntent(contentIntent);
                            NotificationManager notificationManager = (NotificationManager) ctx
                                    .getSystemService(Context.NOTIFICATION_SERVICE);

                            notificationManager.notify(0, builder.build());

                        }
                    }
                }
            }

        } catch (JSONException e) {
            Log.d(TAG, "JSONException: " + e.getMessage());
        }
    }

Answer 1

这应该适用于 Lollipop 之前的设备以及 Lollipop 设备

public static boolean isBackgroundRunning(Context context) {
        ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        List<ActivityManager.RunningAppProcessInfo> runningProcesses = am.getRunningAppProcesses();
        for (ActivityManager.RunningAppProcessInfo processInfo : runningProcesses) {
            if (processInfo.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
                for (String activeProcess : processInfo.pkgList) {
                    if (activeProcess.equals(context.getPackageName())) {
                        //If your app is the process in foreground, then it's not in running in background
                        return false;
                    }
                }
            }
        }


        return true;
    }

编辑:如果应用程序在后台，它应该返回 true，而不是相反