onupdate

My database table has a column defined to use ON UPDATE CURRENT_TIMESTAMP : Field: last_access Type: timestamp Collation: Attributes: on update CURRENT_TIMESTAMP Null: No Default: CURRENT_TIMESTAMP Extra: ON UPDATE CURRENT_TIMESTAMP How can I force this last_access field to update for a given record when no other data in the record is changing? UPDATE your_table SET last_access = CURRENT_TIMESTAMP(); ? 来源： https://stackoverflow.com/questions/9218705/how-to-force-update-of-mysql-record-when-nothing-is-changing

I respond to a button press on my appwidget in the onreceive method. When the button I pressed, I want to force the widget to call the onupdate method. How do I accomplish this? Thanks in advance! Fedor Widget can't actually respond to clicks because it's not a separate process running. But it can start service to process your command: public class TestWidget extends AppWidgetProvider { public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { final int N = appWidgetIds.length; // Perform this loop procedure for each App Widget that belongs to this provider