invalidation

问题 Is there any way to undo the invalidateLater function after it has been turn on? You would agree that reactivity is not need all the time, maybe after certain hour, when grabbing of data is no longer needed. Any suggestion? It is also officially documented that "It's possible to stop this cycle by adding conditional logic that prevents the invalidateLater from being run.", but I cannot find any example to understand how this work. Thanks 回答1: Here is a simple example on how to use

问题 We have the requirement of going to Vendor login page from the main application. If the session is valid then the data selected in the main application is visible in the Vendor page are we are storing the data in session. For Handling this, in Tomcat we had below code in the starting of Vendor login jsp. request.getSession().invalidate(); We are migrating now to Websphere Application Server. The same code is not working in WAS. We are getting IllegalStateException. Somewhere I read that WAS

问题 I'm writing a custom list field, but it doesn't not work when i invoke invalidate method. The screen is always empty, while the data of list field is not null or empty! Please help me figure out the problem. Thank you in advance public class FileListField extends ListField implements ListFieldCallback{ private static final Bitmap fileBitmap = Bitmap.getBitmapResource("document.png"); private static final Bitmap dirBitmap = Bitmap.getBitmapResource("emty_folder.png"); private static final

问题 I wrote a simple code to split string in C with delimiter. When I remove all my frees, code works great but gives memory leaks. When I dont remove free, it does not show memory leaks but gives segmentation fault .. What is wring and how to solve it? #include <stdio.h> #include <stdlib.h> #include <string.h> unsigned int countWords(char *stringLine) { unsigned int count = 0; char* tmp = stringLine; char* last = 0; const char delim = '/'; while (*tmp) { if (delim == *tmp) { count++; last = tmp;

问题 I know this is quite the same question as partial-invalidation-in-custom-android-view-with-hardware-acceleration but I thought I will explain my problem more detailled and hope someone will have an answer on how to solve the problem. I wrote a simple TicTacToe app which was working fine on the emulator. But wasn't working on the device since I found out it was working as expected on the device when I disabled hardware acceleration. All the fields are drawn with Canvas.drawBitmap() , also the

问题 I have a drawing canvas with an OnTouchListener from which I call an AlertDialog . In the dialog I reset the underlying data for the canvas (or not depending on user). On returning to the canvas with dialog.cancel() the canvas does not redraw and I want it to. This means the user has to click on the canvas to cause it to redraw - not good! Because the dialog runs asynchronously any call to invalidate() in the canvas is completed before the dialog returns the changed underlying data. Any

问题 Here is the basic life cycle of my application. It targets SDK version 8 by now, since I am still running Android 2.3.3 on my device. The application starts, onResume() is called The method show() is called to display cached data. A background service gets started which downloads and stores data. It uses AsyncTask instances to accomplish its work. One of the tasks stores downloaded data in a SQLite database. A broadcast intent is sent in onPostExecute() when the storing task has finished. The

问题 As I understand, _mm_clflush() / _mm_clflushopt() invalidates a cache line while saving it to memory if it has been changed. Is there a way to simply abandon a cache line, without saving to memory any changes made to it? A use case is before freeing memory: I don't need cache lines or their values anymore. 来源： https://stackoverflow.com/questions/45987746/how-to-abandon-invalidate-without-saving-a-cache-line-on-x86-64

问题 I have C# app, but the painting job is done within C++ project (this is how it has to be). So I added to my window PictureBox , and passed the handle to the drawing function. It works fine. However when the control is invalidated (I move the window outside the screen and then move it back), I get in result partially empty window. AFAIK there are two approaches for this -- repaint or cache the image. Repainting could be costly process (the image does not change often, but processing is time

问题 Im making an app that returns various Facebook content and need to store a long term access token in a database. I'm aware that its not advisable to use the offline_access permission as it is being removed very soon. The Facebook documentation itself seems very confusing... Theres a blog post from 2011 (https://developers.facebook.com/blog/post/2011/05/13/how-to--handle-expired-access-tokens/) that indicates how to handle invalidated access tokens when a user logs out, but: 1 - It's from 2011