java小部件onReceive不增加int

Question

我目前正在学习Android中的小部件。我想增加计数器的值，但当我点击小部件时，它会从0增加到1，然后停止增加。我的onRecieve方法很好用。 这是我的代码：

public static CheckDate CheckDate;
public static EventList EventList;

public static String EVENT_CLICK = "EventClick";
public String msg;

public RemoteViews rviews;
public AppWidgetManager manager;
public Context cntxt;
public Intent intnt;
public int[] ids;

public int counter = 0;

public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds){
    super.onUpdate(context, appWidgetManager, appWidgetIds);

    CheckDate = new CheckDate();
    EventList = new EventList();

    manager = appWidgetManager;
    RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_layout);
    ids = appWidgetIds;

    Intent intent = new Intent(context, DayWidget.class);
    intent.setAction(EVENT_CLICK);
    intent.putExtra("msg", "change");

    PendingIntent actionPendingIntent = PendingIntent.getBroadcast(context, 0, intent, 0);

    views.setOnClickPendingIntent(R.id.Event, actionPendingIntent);

    CheckDate.Check();

    views.setTextViewText(R.id.Today, CheckDate.Today);
    views.setTextViewText(R.id.Event, String.valueOf(counter));

    manager.updateAppWidget(ids, views);
}

public void UpdateWidget(){
    Bundle extras = intnt.getExtras();
    if(extras!=null) {
        AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(cntxt);
        ComponentName AppWidget = new ComponentName(cntxt.getPackageName(), DayWidget.class.getName());
        int[] appWidgetIds = appWidgetManager.getAppWidgetIds(AppWidget);

        rviews = new RemoteViews(AppWidget.getPackageName(), R.layout.widget_layout);
        counter ++;
        rviews.setTextViewText(R.id.Event, String.valueOf(counter));

        appWidgetManager.updateAppWidget(appWidgetIds, rviews);
    }
}

public void onReceive(Context context, Intent intent){
    intnt = intent;
    cntxt = context;

    if(EVENT_CLICK.equals(intent.getAction())){
        try{
            msg = intent.getStringExtra("msg");
        }catch(NullPointerException e){
            e.printStackTrace();
        }
        UpdateWidget();
        Toast toast = Toast.makeText(cntxt, "OnClick", Toast.LENGTH_LONG);
        toast.show();
    }
    super.onReceive(context, intent);
}

Answer 1

让你的public int counter = 0;static成为public static int counter = 0; 或者将其保存在共享偏好上