what is android messaging app

The previous response briefly describes the principle of inter-process transfer of class objects. before talking about parcel, we should first talk about something: ibinder.What is ibinder? First, you must understand that android remote calls (cross-process calls) are implemented through ibinder. The following is a translation of

Parcel, which means "packaging. What about packaging? It is for serialization. If you want to pass an integer between processes, it is easy to directly pass the line; if you want to pass a string, it is a little complicated: You need to first allocate a memory that can hold the string, then copy the string to the memo

This is stackoverflow on the answer of a netizen:Original address: Http://stackoverflow.com/questions/3572463/what-is-context-in-android As the name suggests, its the context of the application/object. It lets newly created objects understand what have been going on. Typ

Source:/frameworks/base/core/java/android/util/lrucache.javaThe document begins with the following comments: for garbage collection.The meaning is:A cache that maintains a strong reference to only a limited number of value.Each time a value is accessed, it is moved to the team header.When a cache is full, the element a

MTK PlatformAfter the server compilation system version is changed from the Eng version to the user version, it is not possible to directly push the system application for debugging (because of invalid or error after push).Need to enter the project mode first, set log and debugging as root user rights.When you push the app, you need to delete the . Odex file for

Today's whim, wondering: After a bindservice B in Android, what happens if A or B is killed?1. Kill A, no doubt it should be: B won't be stopped. 2. Kill B, what's going to happen? A'll receive onservicedisconnected call back. And A would reconnect B? Or A would re-bindservice B? Or A would receive onserviceconnected B, if B

Look at the source code for these two methodspublic void notifydatasetchanged ()The method internally implements the invocation of the OnChanged event on top of each observer. This method is called whenever a change in the data set is found, or when a new state of the data is read.public void notifydatasetinvalidated ()The method internally implements the invocat

/** * Test the difference between using intent to pass a value directly in Android and using bundle to pass a value.** You are welcome to ask questions.* By garretly* Mail garretly@gmail.com*/ I went around EOE a while ago and saw someone asking me what is the difference between intent and bundle. Since intent can pass the value, why do we still create a bundle

In Android application development you will often encounter something called divider, which is the split line between two view. Recent work to notice this divider and analysis, unexpectedly found inside the universe, surprised for heaven ... ListView's Divider 1. Custom Divider Margins ListView Divider Default is left and right at both ends of the end, how to

ActivityManager class. This is available from API Level 1. However, starting from Level 8, we were pleasantly surprised to find that there was another method called isUserAMonkey (). After reading this method, what does it mean? "Judge whether a user is a monkey "? It's impossible .. So curious, I started to view the SDK. Only "Returns" true "if the user inte

I. What does wipe mean? The literal meaning of the English word is "yellow", "wipe", "dry", and "clean, from the professional perspective of Flash fans, it can be considered as an operation to erase mobile phone data. What does wipe mean? Professional answers: wipe restores factory settings, including deleting contacts, text messages, installed software, and so o

Unlike the traditional Click Touch Screen, Android Touch Screen has some Gesture gestures, such as Fling and Scroll. These Gesture greatly improves user experience. In Android, Gesture recognition (detector) is implemented through the GestureDetector. OnGestureListener interface. First, the Android event processing mec

I recently made an iPhoneProgram, You need to use the database, so you are too lazy to learn core data, so you simply use the SQLite database. I used Lita (http://www.dehats.com/drupal? Q = node/58) Create a database, and then use nsfilemanager to copy the database in the project to the document directory in the program sandbox on the device, the database in the sandbox is different from the size of my original database! In a previous post ([

mobile phones that support s beam. Does this sound a bit like the previous one?ArticleAndroid beam we introduced in. Yes, Android beam and S beam are very similar in usage and functions. However, the two are actually based on different technologies. Android beam uses NFC to assist in Bluetooth transmission after pairing. After pairing with NFC, s beam transmits data through WiFi.. The speed of wifi

be installed again and the test can be used properly. 4, of course, cause the cell phone memory card can not read another reason may be the cell phone partition table damage caused, at this time only need to repair the partition table can be. What you do: Install the memory card on the card reader and insert the card reader into the USB interface of your computer. Open the Run dialog box and enter the command "CMD" for the Msdos interface.

In the project, maps are used on multiple pages. The map sizes are different. After the map is displayed on a small page, the map is displayed on a large page. Finally, I found a foreign website and added Android: process to the activity with manifest. xml. Android: Process = "showactivity"

Android is a software package for mobile devices, including operating systems, middleware, and critical applications. The Android SDK provides the tools and APIs necessary for application development on the Android platform using the Java programming language.Functional characteristics1. The application framework enabl

The previous response briefly describes the principle of inter-process transfer of class objects. before talking about Parcel, we should first talk about something: IBinder.What is IBinder? First, you must understand that Android remote calls (cross-process calls) are implemented through IBinder. The following is a translation of

The previous response explains ibinder. This is a detailed explanation of parcel. The following is an explanation of the android SDK documentation:Parcel is a container mainly used to store serialized data, which can then be passed between processes through the binder (to understand why serialization

When you customize a control with Android, you typically need to override the parent class constructor. These three are enough to find the function exactly when to call?Public view is called when the Java code creates the view, and if it is a view populated from XML, it will not call thisPublic View (context context, AttributeSet attrs) This