java - 在android中的未决 Intent 上实例化非 Activity 类

我在android中有一个通知，我想做类似的事情

当我单击通知中的MyStaticClass.start（）时，该类不是活动，仅用于实例化所需的类。

我该怎么办？

这是我的实际代码：

String notificationContent = "Hay una nueva version disponible";
        String notificationTitle = "Firext";
        Bitmap largeIcon = BitmapFactory.decodeResource(FirextApplication.getInstance().getResources(), R.drawable.ic_launcher);
        int smalIcon = R.drawable.ic_launcher;

        Intent intent = new Intent(FirextApplication.getInstance(), UpdateProcess.class);
        intent.setData(Uri.parse("content://" + Calendar.getInstance().getTimeInMillis()));
        PendingIntent pendingIntent = PendingIntent.getActivity(FirextApplication.getInstance(), 0, intent, Intent.FLAG_ACTIVITY_NEW_TASK);

        NotificationManager notificationManager = (NotificationManager) FirextApplication.getInstance().getSystemService(Context.NOTIFICATION_SERVICE);

        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(
                FirextApplication.getInstance())
                .setWhen(Calendar.getInstance().getTimeInMillis())
                .setContentText(notificationContent)
                .setContentTitle(notificationTitle)
                .setSmallIcon(smalIcon)
                .setAutoCancel(true)
                .setTicker(notificationTitle)
                .setLargeIcon(largeIcon)
                .setDefaults(Notification.DEFAULT_LIGHTS | Notification.DEFAULT_VIBRATE | Notification.DEFAULT_SOUND)
                .setContentIntent(pendingIntent);

        Notification notification = notificationBuilder.build();
        notificationManager.notify((int) Calendar.getInstance().getTimeInMillis(), notification);

我需要打的课

public class UpdateProcess {

    private static final String APPLICATION_VND_ANDROID_PACKAGE_ARCHIVE = "application/vnd.android.package-archive";
    private static final String NEWVERSION = "NewVersion.apk";
    private static final File EX = Environment.getExternalStorageDirectory();

    private static volatile UpdateProcess instance = null;
    private Activity activity;


    private UpdateProcess(Activity activity) {
        this.activity = activity;
        checkForNewUpdates();
    }

    public static void startUpdate(Activity activity) {
        if (instance == null) {
            synchronized (UpdateProcess.class) {
                if (instance == null) {
                    instance = new UpdateProcess(activity);
                }
            }
        } else {
            UpdateProcess.instance.activity = activity;
        }
    }

我只需要做一个UpdateProcess.startUpdate（）;

编辑：

这是我的新代码：

private void showNot() {
        String notificationContent = "Hay una nueva version disponible";
        String notificationTitle = "Firext";
        Bitmap largeIcon = BitmapFactory.decodeResource(FirextApplication.getInstance().getResources(), R.drawable.ic_launcher);
        int smalIcon = R.drawable.ic_launcher;

        Intent intent = new Intent(FirextApplication.getInstance(), UpdateProcess.class);
        PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, 0);

        Notification notificationBuilder = new NotificationCompat.Builder(context)
                .setWhen(Calendar.getInstance().getTimeInMillis())
                .setContentText(notificationContent)
                .setContentTitle(notificationTitle)
                .setSmallIcon(smalIcon)
                .setTicker(notificationTitle)
                .setLargeIcon(largeIcon)
                .setDefaults(Notification.DEFAULT_LIGHTS | Notification.DEFAULT_VIBRATE | Notification.DEFAULT_SOUND)
                //.setContentIntent(pendingIntent)
                .addAction(android.R.drawable.arrow_up_float, "Call", pendingIntent).build();


        NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);

        notificationManager.notify(0, notificationBuilder);
    }

public class UpdateProcess extends IntentService {

    private static final String APPLICATION_VND_ANDROID_PACKAGE_ARCHIVE = "application/vnd.android.package-archive";
    private static final String NEWVERSION = "NewVersion.apk";
    private static final File EX = Environment.getExternalStorageDirectory();

    private static volatile UpdateProcess instance = null;
    private Context context;

    private UpdateProcess(Context context) {
        super("UpdateProcess");
        this.context = context;
        checkForNewUpdates();
    }

  @Override
    protected void onHandleIntent(Intent intent) {
        startUpdate(getApplicationContext());
    }

但是当我点击动作时，什么也没有发生..我得到了这个错误：

05-10 17：15：22.955 753-7617 /？ W / ActivityManager：无法启动服务意图{flg = 0x10000000 cmp = com.firext.android / .util.UpdateProcess bnds = [192,346] [1080,490]} U = 0：找不到

编辑2。现在工作，我忘了在清单中包含服务

最佳答案

我需要在UpdateProcess中的方法中显示一条吐司消息，我应该使用什么？


您的Notification可以通过其Activity触发Service，BroadcastReceiver或PendingIntent。 Activity是Context。 Service是Context。 BroadcastReceiver接收Context作为onReceive()的参数。因此，在所有三个位置中，您已经有一个Context，因此请使用该Toast。

您可能还考虑完全摆脱Toast。 checkForNewUpdates()仅适用于用户不需要的消息，因为用户可能看不到它。


  我只需要做一个UpdateProcess.startUpdate（）;


看来UpdateProcess将做一些重要的工作。

如果该工作少于15秒，请将UpdateIntentService转换为IntentService，扩展checkForNewUpdates()，然后在onHandleIntent()中进行您的getService()工作。您可以使用PendingIntent UpdateIntentService触发WakefulBroadcastReceiver进行工作。

如果工作可能需要更长的时间，则应考虑使用the WakefulIntentService pattern（或也许是my ），以确保设备保持足够长的唤醒时间以完成工作。