how to send multimedia message on android

hell is going on here? The reason is that the view components in the Android system are not thread-safe, and if you want to update the view, you must update it in the main thread, and you cannot perform the updated operation on the child thread.In this case, we will notify the main thread in the child threads, let the main thread do the update operation. So how do we notify the main thread? We need to use the handler object.Let's modify the above cod

In Android, it's not safe to update UI controls in a non main thread, and app runs directly crash, so when we need to update UI controls in a non main thread, we need to use handler and message to implement demo, Use to a button and a TextView, click on the button to change the content of the TextView, button click to create a new process, the UI control in the process to modify. public class Mainac

Before also because weekend night watching TI3 competition, has not found the time to write a blog, resulting in a long period of not updated. Ashamed! Back to the progress of the next, try to make sure to write every week. Here is also the first to congratulate the Alliance team from Sweden won the TI3 champion, I hope next year China team can tiger up!Getting started, we all know that the Android UI is thread insecure, and if you try to do UI action

Parse Android Message Processing Mechanism -- Handler/thread/logoff messagequeue Tian haili @ csdn Keywords: Android message handlerthread low.uml This article explains how Android uses handler/thread/logoff and messagequeue to implement the internal implementation of t

object described in section 2 are called in the working thread, the thread synchronization issue should be carefully considered. If necessary, add a synchronization object to protect the variable. 4. The handleMessage interface of the handler object will be called in the main thread. In this function, you can call any variables and functions in the main thread with confidence to complete the UI update task. 5. Many Android APIS also use the Handler t

(); Bundle.putint (Upper_num, Integer.parseint (Etnum.gettext (). toString ())); Msg.setdata (bundle);//Send a message to handler in a new threadCalThread.mHandler.sendMessage (msg); } }PS: This example comes from "Android Crazy Handout" ~Summary of this sectionThis section is a simple analysis of the handler event transmission in

handler for the multipart/mixed part, so this bit needs to be added. MailcapCommandMap mc = (MailcapCommandMap) CommandMap.getDefaultCommandMap(); mc.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html"); mc.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml"); mc.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain"); mc.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed"); mc.a

$calledfromwrongthreadexception: Only the original thread, created a view hierarchy can touch its views. What the hell is going on here? The reason is that the view components in the Android system are not thread-safe, and if you want to update the view, you must update it in the main thread, and you cannot perform the updated operation on the child thread.In this case, we will notify the main thread in the child threads, let the main thread

ObjectiveAndroid developers know that the UI control cannot be modified on a non-main thread because Android rules to access the UI only in the main thread, and if the UI is accessed in a child thread, the program throws an exceptionandroid.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy .Also, Android does not recommend that you take some time-consum

In Android, the UI thread does not agree to be blocked. So we're going to put the time-consuming work into a sub-thread to deal with.How do you notify the UI thread when the child threads are time-consuming to process?We can create a handler object in the main thread of the UI, and then, by overriding its Handlemessage (Message msg) method, it receives SendMessage (mess