notify | 易学教程

Android - notifyDataSetChanged() not working on custom adapter?

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问题 I am trying to call notifyDataSetChanged() on my custom adapter but it seems not to be working. Here is my activity :- public class ThreadData extends ListActivity { private static final Uri SMS_URI = Uri.parse("content://sms"); HashMap<Long, BodyType> bodies = new HashMap<Long, BodyType>(); private String name, number; private ListView listView; private Activity activity; ThreadDataAdapter adapter; Handler handler; private Context context; private static final String PHONE_NUMBER_SEPARATORS

How can I monitor a specific file for changes in Mercurial?

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问题 I have set up a remote Mercurial (Hg) repository that holds a large Java project. I would like to monitor any changes done to the project's pom file and receive e-mails when changes were made to the pom. I would like to exclude all other file changes from notifications as I am only interested in monitoring any possible changes in dependencies (hence the POM). Is there any Mercurial Extension or workaround using Jenkins to subscribe to the change history for one individual file inside a

Notify when application comes to foreground

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问题 I have a service which has to monitor which application is in the foreground and based on the application do some functionality. I can get the list of foreground applications, using ActivityManager.getRunningAppProcesses(). But with this I cannot monitor when the foreground application changes. ex. when Application 1 which was foreground goes to background and a new Application 2 comes to foreground, the service should be notified about this. Are there any Broadcasting happening in Android,

synchronized notify, wait over property Boolean Object Java, IllegalMonitorStateException

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问题 I have this code. import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReadWriteLock; import java.util.concurrent.locks.ReentrantReadWriteLock; public class SyncProt0 { public static void main(String... args) { ExecutorService executorService = Executors.newCachedThreadPool(); ProcessStep psWorker = new ProcessStep(); ProcessStep psBoss = new ProcessStep(); Worker worker = new Worker

Update item in BindableCollection with notify ICollectionView

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问题 Hi I bind collection from Caliburn Micro on ListBox control in view. Here is it. public BindableCollection<UserInfo> Friends { get { return _friends; } set { _friends = value; NotifyOfPropertyChange(() => Friends); } } ListBox items is type of UserInfo. Hi I sort and group listbox items, I use CollectioView on this purpose. When I initialize ListBox I sort and group items with this method. private ICollectionView _currentView; //... private void SortContactList() { _currentView =

In ZK Can we PostNotifyChange more than one variables

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问题 I will want to notify some specific variables of a class with the help of PostNotifyChange So i was trying BindUtils.postNotifyChange(null, null, taskListModel, "model,sequence"); It is not working :( Can we PostNotifyChange more than one variable something like we doing in NotifyChange @NotifyChange({ "taskList","sequence" }) Is it possible or not with PostNotifyChange 回答1: I don't believe so, sorry. From the source, it appears BindUtils just takes a single property name and doesn't try to

How to be notified about entering suspend mode?

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问题 I'd like my application to be notified when system is about to suspend or sleep (before). No matter to acquire a wake lock: i dont want to inhibit the procedure but only to be notified about it. Thank you. L. 来源： https://stackoverflow.com/questions/4668978/how-to-be-notified-about-entering-suspend-mode

Unexpected thread wakeup

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问题 I was expecting the second thread in the following example to hang, since it waits on an object with no corresponding notify. Instead, it falls through to the println, presumably due to a spurious wakeup. public class Spurious { public static void main(String[] args) { Thread t1 = new Thread() { public void run() { System.out.println("Hey!"); } }; Thread t2 = new Thread() { public void run() { try { synchronized (t1) { t1.wait(); } } catch (InterruptedException e) { return; } System.out

Java wait() & notify() vs Android wait() & notify()

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问题 Having figured out how to use the wait() and notify() in Java application to fetch some data from the Internet, I had to migrate that code into my Android application. As it turns out the code that would've worked in Java app would never had worked within my Android app even with attempts to make it multi-threaded (with Runnable and then ASyncTask). The problem seems that the Android app will hang after a call on Object.wait() and will never continue further. The following is the code of the

线程间通信

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1.轮询机制通过不断访问共享对象的状态，来判断是否满足了线程执行要求定义操作类MyObject，内部有一个volatile关键字修饰的list成员变量，使用volatile主要是为了让操作类对象的改变可以让每个线程都能感应到。代码如下： package com.feng.example; import java.util.ArrayList; import java.util.List; public class MyObject { //此处必须是volatile，否则线程B中的object感应不到线程A中的object的变化 volatile private List<String> list = new ArrayList<String>(); public void add() { list.add("hahaha"); } public int size(){ //System.out.println("hahah"); return list.size(); } } 定义两个线程类MyThreadA 用于向MyObject对象中添加数据，MyThreadB用于在list中存在大于等于五个元素时退出代码如下： package com.feng.example; public class MyThreadA extends Thread{ private