Android

In this article, we use SAX to parse XML. In Android, we can use SAX and DOM. DOM needs to read the entire XML file into the memory and parse it, which consumes a lot of memory. However, SAX is based on event-driven processing methods, callback

In the previous lecture on Android, SQLite reads data by PAGE and only displays data in text boxes. This time, we will go deeper and implement and encapsulate an SQL paging table control, data can be displayed on pages or in tables. Let's take a

Some people used the PC sound card input (microphone hole) to simulate the oscilloscope, but few were implemented using mobile phones. Using MMAPI of j2m's to simulate the oscilloscope, the specific effect is slightly inferior to that of a smart

In Android, messages are often used during information interaction between threads or threads. If we are familiar with the Internal principles of these basic things, it will make it easy and better for us to build a system, avoid some low-level

Introduction When using the Andriod SDK for application development, we need to debug the source code. It may need to go to an Android API function for tracking and debugging. However, if the SDK of the target version is not associated with the

  Android provides a user-level lightweight LOG Mechanism. Its implementation runs through Java, JNI, local c/c ++ implementation, Linux kernel driver, and Other Android layers, it is simple and clear enough to explain the case. This series of

  The Widget is a small application. After the AppWidget framework is added to Android1.5, developers can use this framework to develop widgets. Widgets can be dragged to the user's desktop and interact with each other. It provides a full-featured

Drag the icon on the panel to the interface, and add the following code in res/strings. xml: Blood type Boold Types A Boold Types B Boold Types O Boold Types AB First, add the description text of the List header; The second item is the

1. Introduction to NKD NDK (Native Development Kit) "Native" is binary AndroidNDK is a set of tools that allow Android Application developers to embed local machine code compiled from C, C ++ source code files into their respective application

For a long list, if it is time-consuming to load each list item (such as downloading images from the Network), if you need to quickly scroll the list, you can use an alternative name or other items that can be quickly loaded to the list item first.

* Similarities between res/raw and assets: 1. Files in the two directories will be stored in the apk package intact after packaging, and will not be compiled into binary. * Differences between res/raw and assets:1. files in res/raw will be mapped to

Use Android NDK to compile libxml2 and libiconv libraries simultaneouslyFirst, make preparations. follow the steps below to create a directory and prepare the libiconv and libxml2 compressed files.(The version I use here is: libiconv-1.14.tar.gz

Canvas. drawVertices is the common format of Canvas. drawBitmapMesh. For details about BitmapMesh, see Android ApiDemos example resolution (55): Graphics-> BitmapMesh. Add a green mesh to the image to better display the drawVertices

In the previous example, the Android ApiDemos example resolution (61): Graphics-> Compass and the Android ApiDemos example resolution (79): Graphics-> SensorTest involves Sensors. This example introduces the Sensors usage supported by

An animation is usually defined by defining a key frame (first or last frame) and then the system automatically generates an intermediate frame. The process of generating an intermediate frame is called "interpolation interpolate ". Android

Java code will not be pasted, only the xml file will be mounted, Method: 1. Put three images in drawable, which are the images that obtain the focus, press the focus, lose the focus, and press the focus, and the natural state (that is, the focus is

1. start and close the ADB Service (adb start-server and adb kill-server)According to the author's test, the adb service may be available after the simulator runs for a period of time (this service can be found in the Windows Process, which is used

I checked some information online. There are two methods for detecting a USB flash disk: checking the battery or checking the configuration information. 1. The Batterymanager detection method is as follows: [Java]IntentFilter mIntentFilter = new

This article explains how to create and run the first Android program in eclipse.Steps for setting up the environment in this article:1. Download eclipse Version: Juno Release Eclipse IDE for Java Developers,2. Install JDK 1.6.0 _ 33, download it

This example and the preceding LinearLayout Android ApiDemos example resolution (145): Views-> Layouts-> LinearLayout-> 5. simple Form implements the same function to construct an input Form, but this example uses the RelativeLayout layout. During