将小部件ID传递给活动

Question

在我的小部件提供程序中,我有以下代码:

for (int widget_id : appWidgetIds) {
  Log.d(TAG, "Widget Id: " + widget_id);
  RemoteViews remoteViews;

  Widget widget;

  while (true) {
    try {
      widget = Widget.load(context, Widget.class, widget_id);
      break;
    }
    catch (Exception ex) {
      Log.e(TAG, "Exception!", ex);
    }
  }

  // Widget is assigned to user
  if (widget != null) {
    remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget_with_user);
    remoteViews.setCharSequence(R.id.user_text, "setText", widget.user.name);
    remoteViews.setUri(R.id.avatar, "setImageURI", Uri.parse(widget.user.avatar));
  }
  else {
    remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget);
    Intent configIntent = new Intent(context, ConfigureWidget.class);
    configIntent.setAction(ACTION_WIDGET_CONFIGURE);
    configIntent.putExtra("widget_id", widget_id);

    PendingIntent configPendingIntent = PendingIntent.getActivity(context, REQUEST_CODE_ONE, configIntent, 0);
    remoteViews.setOnClickPendingIntent(R.id.configure_text, configPendingIntent);
  }

  appWidgetManager.updateAppWidget(widget_id, remoteViews);
}

在else部分,我正在启动配置活动并尝试将小部件ID传递给它.但是,bundle总是为null:

Bundle extras = getIntent().getExtras();

if (extras != null) {
  int widget_id = extras.getInt("widget_id");
}

如何将小部件ID添加到已启动的活动中？

Answer 1

问题是android使用PendingIntents进行缓存.解决方案是添加FLAG_UPDATE_CURRENT标志,使其更新缓存的PendingIntent.

PendingIntent configPendingIntent = PendingIntent.getActivity(context, REQUEST_CODE_ONE, configIntent, PendingIntent.FLAG_UPDATE_CURRENT);

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