随机时间过后，Android小部件变得无法响应

Question

我的假设是我还没有完全理解小部件。希望你们中的一个大师可以看到我的逻辑/思想存在缺陷。

最终，我的小部件会发生什么，它最终会以非常随机的间隔（通常> 5小时）变得无响应。

到目前为止，我的调查让我相信这可能是操作系统内存不足而我的小部件被重新创建的结果？

如果是这种情况，我会认为OnUpdate（）方法会处理这个问题，但可能我错了。

我已经阅读了关于小部件无响应的几乎每个帖子。对我来说唯一有希望的是这一个：

Android Homescreen Widget becomes Unresponsive

但我没有使用服务而且不确定我需要。

小部件的目标是首先检查用户是否创建了个人资料。这是通过检查本地数据库是否存在以及用户记录来完成的。如果这些都不存在，则窗口小部件应显示“Get Started”图像（它成功完成）。

用户点击此图片后，会将其启动到配置文件创建向导中。创建配置文件后，小部件将从应用程序更新，以显示图像以及一些卡路里摄入信息。

小部件上有三个可点击的项目。图像和两个textview。每个人都在我的应用程序中分别启动不同的活动。

这是小部件类：

public class bbi_widget extends AppWidgetProvider {

    public void onReceive(Context context, Intent intent) {
        super.onReceive(context, intent);
    }

    private static String week6Path = "";

    public static RemoteViews getWidgetRemoteViews(Context context) {
        Intent calorieCrushIntent = new Intent(context, calorie_crush.class);
        Intent dashBoardIntent = new Intent(context, DashboardActivity.class);

        PendingIntent calorieCrushPendingIntent = PendingIntent.getActivity(
                context, 0, calorieCrushIntent, PendingIntent.FLAG_UPDATE_CURRENT);
        PendingIntent dashboardPendingIntent = PendingIntent.getActivity(
                context, 0, dashBoardIntent, PendingIntent.FLAG_UPDATE_CURRENT);

        RemoteViews appWidgetViews = new RemoteViews(context.getPackageName(),
                R.layout.initial_widget_layout);

        appWidgetViews.setOnClickPendingIntent(R.id.surp_def_widgettextView, calorieCrushPendingIntent);
        appWidgetViews.setOnClickPendingIntent(R.id.calTextView, calorieCrushPendingIntent);
        appWidgetViews.setOnClickPendingIntent(R.id.widget_after_picture, dashboardPendingIntent);

        return appWidgetViews;
    }

    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager,
                         int[] appWidgetIds) {

        BBIDatabase db = new BBIDatabase(context);

        db.openToRead();

        boolean doesTableExist = db.doesTableExist(BBIDatabase.BBI_USER_TABLE);

        db.close();

        boolean doesUserExist = false;

        if (doesTableExist){
            db.openToRead();
            doesUserExist = db.doesUserExist();
            db.close();
        }

        if (!doesTableExist || !doesUserExist){
            Intent getStartedIntent = new Intent(context, GettingStartedWizardActivity.class);

            PendingIntent getStartedPendingIntent  = PendingIntent.getActivity(
                    context, 0, getStartedIntent, PendingIntent.FLAG_UPDATE_CURRENT);

            for (int index = 0; index < appWidgetIds.length; index++) {
                int appWidgetId = appWidgetIds[index];
                RemoteViews appWidgetViews = getWidgetRemoteViews(context);

                appWidgetViews.setOnClickPendingIntent(R.id.widget_after_picture, getStartedPendingIntent);

                appWidgetManager.updateAppWidget(appWidgetId, appWidgetViews);
            }
        } else {

            db.openToRead();

            String curPath = db.GetSixWeekPath();

            Bitmap sixWeekBmp = null;
            if (week6Path != curPath && curPath != null && week6Path != null) {
                week6Path = db.GetSixWeekPath();
                sixWeekBmp = BitmapFactory.decodeFile(week6Path);
            }

            db.close();

            db.openToRead();


            int totalCalsToday = db.GetTodaysCalorieIntakeForWidget();
            int bmrWithAct = db.GetBMRPlusActivity();
            int additionalCalsCrushed = db.GetTodaysCaloriesBurnedForWidget();

            int surp = totalCalsToday - (bmrWithAct + additionalCalsCrushed);
            if (surp < 0)
                surp = 0;

            int def = totalCalsToday - (bmrWithAct + additionalCalsCrushed);
            if (def > 0)
                def = 0;

            db.close();

            for (int index = 0; index < appWidgetIds.length; index++) {
                int appWidgetId = appWidgetIds[index];
                RemoteViews appWidgetViews = getWidgetRemoteViews(context);

                appWidgetViews.setViewVisibility(R.id.calTextView, View.VISIBLE);
                appWidgetViews.setViewVisibility(R.id.surp_def_widgettextView, View.VISIBLE);

                appWidgetViews.setTextViewText(R.id.calTextView, "Calorie intake: " + String.valueOf(totalCalsToday));

                if (surp > 0) {
                    appWidgetViews.setTextViewText(R.id.surp_def_widgettextView, "SURPLUS   " + String.valueOf(surp));
                    appWidgetViews.setTextColor(R.id.surp_def_widgettextView, context.getResources().getColor(R.color.surplus_ball_color));
                } else {
                    appWidgetViews.setTextViewText(R.id.surp_def_widgettextView, "DEFICIT   " + String.valueOf(def));
                    appWidgetViews.setTextColor(R.id.surp_def_widgettextView, context.getResources().getColor(R.color.calorie_crush_ball));
                }

                appWidgetViews.setImageViewBitmap(R.id.widget_after_picture, sixWeekBmp);

                Intent calorieCrushIntent = new Intent(context, calorie_crush.class);
                Intent dashBoardIntent = new Intent(context, DashboardActivity.class);

                PendingIntent calorieCrushPendingIntent = PendingIntent.getActivity(
                        context, 0, calorieCrushIntent, PendingIntent.FLAG_UPDATE_CURRENT);
                PendingIntent dashboardPendingIntent = PendingIntent.getActivity(
                        context, 0, dashBoardIntent, PendingIntent.FLAG_UPDATE_CURRENT);

                appWidgetViews.setOnClickPendingIntent(R.id.surp_def_widgettextView, calorieCrushPendingIntent);
                appWidgetViews.setOnClickPendingIntent(R.id.calTextView, calorieCrushPendingIntent);
                appWidgetViews.setOnClickPendingIntent(R.id.widget_after_picture, dashboardPendingIntent);

                appWidgetManager.updateAppWidget(appWidgetId, appWidgetViews);
            }
        }
    }
}

从我的应用程序中，我使用remoteViews在窗口小部件中更新这些值。

以下是我的应用中的助手类：

public class WidgetHelper {

    public static void UpdateCalorieIntake(int newValue, Context context) {
        AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
        RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.initial_widget_layout);
        ComponentName thisWidget = new ComponentName(context, bbi_widget.class);
        remoteViews.setTextViewText(R.id.calTextView, "Calories in  " + String.valueOf(newValue));
        appWidgetManager.updateAppWidget(thisWidget, remoteViews);
    }

    public static void UpdateWidgetSurplus(int newValue, Context context) {
        AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
        RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.initial_widget_layout);
        ComponentName thisWidget = new ComponentName(context, bbi_widget.class);

        if (newValue > 0) {
            remoteViews.setTextViewText(R.id.surp_def_widgettextView, "Caloric Surplus  " + String.valueOf(newValue));
            remoteViews.setTextColor(R.id.surp_def_widgettextView, context.getResources().getColor(R.color.surplus_ball_color));
        } else {
            remoteViews.setTextViewText(R.id.surp_def_widgettextView, "Caloric Deficit  " + String.valueOf(newValue));
            remoteViews.setTextColor(R.id.surp_def_widgettextView, context.getResources().getColor(R.color.calorie_crush_ball));
        }
        appWidgetManager.updateAppWidget(thisWidget, remoteViews);
    }

    private static String week6Path = "";

    public static void UpdateAll(Context context) {
        BBIDatabase db = new BBIDatabase(context);

        db.openToRead();

        String curPath = db.GetSixWeekPath();

        Bitmap sixWeekBmp = null;
        if (week6Path != curPath && curPath != null && week6Path != null) {
            week6Path = db.GetSixWeekPath();
            sixWeekBmp = BitmapFactory.decodeFile(week6Path);
        }

        db.close();

        db.openToRead();

        int totalCalsToday = db.GetTodaysCalorieIntakeForWidget();
        int bmrWithAct = db.GetBMRPlusActivity();
        int additionalCalsCrushed = db.GetTodaysCaloriesBurnedForWidget();

        int surp = totalCalsToday - (bmrWithAct + additionalCalsCrushed);
        if (surp < 0)
            surp = 0;

        int def = totalCalsToday - (bmrWithAct + additionalCalsCrushed);
        if (def > 0)
            def = 0;

        db.close();

        AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
        RemoteViews appWidgetViews = new RemoteViews(context.getPackageName(), R.layout.initial_widget_layout);
        ComponentName thisWidget = new ComponentName(context, bbi_widget.class);

        appWidgetViews.setTextViewText(R.id.calTextView, "Calorie intake: " + String.valueOf(totalCalsToday));

        if (surp > 0) {
            appWidgetViews.setTextViewText(R.id.surp_def_widgettextView, "Caloric surplus  " + String.valueOf(surp));
            appWidgetViews.setTextColor(R.id.surp_def_widgettextView, context.getResources().getColor(R.color.surplus_ball_color));
        } else {
            appWidgetViews.setTextViewText(R.id.surp_def_widgettextView, "Caloric deficit  " + String.valueOf(def));
            appWidgetViews.setTextColor(R.id.surp_def_widgettextView, context.getResources().getColor(R.color.calorie_crush_ball));
        }

        appWidgetViews.setImageViewBitmap(R.id.widget_after_picture, sixWeekBmp);

        Intent calorieCrushIntent = new Intent(context, calorie_crush.class);
        Intent dashBoardIntent = new Intent(context, DashboardActivity.class);

        PendingIntent calorieCrushPendingIntent = PendingIntent.getActivity(
                context, 0, calorieCrushIntent, PendingIntent.FLAG_UPDATE_CURRENT);
        PendingIntent dashboardPendingIntent = PendingIntent.getActivity(
                context, 0, dashBoardIntent, PendingIntent.FLAG_UPDATE_CURRENT);

        appWidgetViews.setOnClickPendingIntent(R.id.surp_def_widgettextView, calorieCrushPendingIntent);
        appWidgetViews.setOnClickPendingIntent(R.id.calTextView, calorieCrushPendingIntent);
        appWidgetViews.setOnClickPendingIntent(R.id.widget_after_picture, dashboardPendingIntent);

        appWidgetManager.updateAppWidget(thisWidget, appWidgetViews);
    }
}

提供商信息：

<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
    android:minWidth="294dp"
    android:minHeight="294dp"
    android:previewImage="@drawable/bbi_icon"
    android:initialLayout="@layout/initial_widget_layout"
    >

</appwidget-provider>