在screen_on上更新android小部件的最佳方法是什么。是否支持Android Oreo（API 26） [英] What is the best way to update android widget on screen_on. Is it supported in Android Oreo (API 26)

问题描述

我创建了一个非常好用的小部件，然后由于Google Play开发者控制台的要求，我将targetSDK从23更改为26。

I created a widget, which was working quite fine, and then I changed targetSDK from 23 to 26, due to the requirement from Google Play Developer Console.

之后切换到Android SDK 26，我的app小部件不再更新screen_on / User_present事件。我可以看到，由于（后台执行限制），后续运行任务在Android 26中有很多变化。

After switching to Android SDK 26, my app widget is no more updating on the screen_on/User_present event. I can see that there are a bunch of changes in Android 26 for background running task due to (Background Execution Limits).

以下是我的问题？

Q1-如何更新我的应用每个screen_on事件上的小部件，以便用户在小部件上看到正确的状态？

Q1- How can I update my app widget on every screen_on event, so that the user will see the right status on widget?

Q2-如何每隔1小时定期更新我的应用小部件？

Q2- How can I update my app widget periodically after every 1 hour?

以下代码我正在使用。

static void updateAppWidget(Context context, AppWidgetManager appWidgetManager,
                                int appWidgetId) {

        RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.app_widget);
        String token = getToken();
        getUUID();
        getGatewayActivationStatus();
        getEnvironment();
        if (token != null) {
            remoteViews.setViewVisibility(R.id.layoutBtn, View.VISIBLE);
            AppWidgetIntentReceiver appWI = new AppWidgetIntentReceiver();
            appWI.getMode(context);
        } else {
            remoteViews.setTextViewText(R.id.txt_mode, "Please sign into your App to see status.");
            remoteViews.setViewVisibility(R.id.layoutBtn, View.INVISIBLE);
        }

        remoteViews.setOnClickPendingIntent(R.id.btn_refresh, buildButtonPendingIntent(context, _refresh));
        remoteViews.setOnClickPendingIntent(R.id.txt_mode, buildButtonPendingIntent(context, _openApp));

        appWidgetManager.updateAppWidget(appWidgetId, remoteViews);
    }


    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
        for (int appWidgetId : appWidgetIds) {
            updateAppWidget(context, appWidgetManager, appWidgetId);
        }
    }

    @Override
    public void onEnabled(Context context) {
        super.onEnabled(context);
    }

    @Override
    public void onDisabled(Context context) {
        super.onDisabled(context);
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        super.onReceive(context, intent);//add this line
        AppWidgetIntentReceiver appWI = new AppWidgetIntentReceiver();

        if (_standby.equals(intent.getAction()) || _home.equals(intent.getAction()) || _away.equals(intent.getAction()) || _refresh.equals(intent.getAction()) || _openApp.equals(intent.getAction())) {
            appWI.handleClickEvent(context, intent, intent.getAction());

        } else if (intent.getAction().equals("android.intent.action.USER_PRESENT") || intent.getAction().equals("android.appwidget.action.APPWIDGET_ENABLED") || intent.getAction().equals("android.intent.action.MY_PACKAGE_REPLACED") || intent.getAction().equals("android.appwidget.action.APPWIDGET_UPDATE")) {

            getToken();
            getUUID();
            getGatewayActivationStatus();
            getEnvironment();
            appWI.handleClickEvent(context, intent, _refresh);

        }
    };

    static PendingIntent buildButtonPendingIntent(Context context, String event) {
        if (!event.equals("OPEN_APP")) {
            Intent intent = new Intent(context, AppWidgetProvider.class);
            intent.setAction(event);
            return PendingIntent.getBroadcast(context, 0, intent, 0);
        } else {
            Intent intent2 = new Intent(context, MainActivity.class);
            return PendingIntent.getActivity(context, 0, intent2, 0);
        }
    }

推荐答案

最后，我找到了解决这个问题的方法。

Finally, I've found solution to this problem.

我们可以在这里找到答案：

We can simply find answer here:

https://developer.android.com/training/monitoring-device-state/doze-standby

要解决上述问题，我们可以使用Alarm Manager。

To solve the above problem, we can use Alarm Manager.

标准的AlarmManager警报（包括setExact（）和setWindow（））被推迟到下一个维护窗口。

Standard AlarmManager alarms (including setExact() and setWindow()) are deferred to the next maintenance window.

因此，在打盹模式完成之后，或在维护窗口期间，它将自动执行在警报管理器服务中编写的代码。

So right after the doze mode finishes, or during a maintenance window, it will automatically execute the code, written in alarm manager service.

您可以在此处获得帮助，从此stackoverflow帖子中的窗口小部件中使用Alarm Manager：
https://stackoverflow.com/a/14319020/3497865

You can get help here to use Alarm Manager in your widget from this stackoverflow post: https://stackoverflow.com/a/14319020/3497865

这篇关于在screen_on上更新android小部件的最佳方法是什么。是否支持Android Oreo（API 26）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！