Android

In the Android anonymous shared memory driver source code analysis, the implementation of Linux kernel space exists in the anonymous share is analyzed in detail. Although the kernel space implements anonymous shared memory, however, you still need

Function 1: captures the current screen. 2. Save the captured image to a directory folder in SDCard. Java code [java] package com. app. test01; import java. io. file; import java. io. fileOutputStream; import android. app. activity; import android.

There are a lot of commonly used Widgets. Now I want to talk about the commonly used widgets in mobile phone development. To understand how to draw images for Android, you must first understand the basic graphic interfaces used: 1. Bitmap can be

The previous article briefly introduced the use of SurfaceView. This time, we will introduce the use of SurfaceView dual buffering. Dual buffering is a multi-threaded application implemented to prevent animation flash. The dual buffering

I learned how to initialize and load the property system and save it to the property file. Next I will learn about the Attribute Service. It is mainly used to provide a service for the upper layer of the Java Virtual Machine, or use java

In the init. rc file, you can see the following services loaded: Service zygote/system/bin/app_process-Xzygote/system/bin -- zygote -- start-system-server Socket zygote stream 666 Onrestart write/sys/android_power/request_state wake Onrestart

  One problem mentioned in the previous article is that the sensor refresh frequency is too fast. If we want to create a UI, we need to draw a moving arrow Based on the direction data, the drawing interface needs to be refreshed too frequently,

  Java code /** * Obtain an IP address * * @ Return */ Public static String getLocalIpAddress (){   Try {   For (Enumeration en = NetworkInterface . GetNetworkInterfaces ();   En. hasMoreElements ();){   NetworkInterface intf = en. nextElement ();  

Copy andengine. jar to the libs folder.  01Package com. hu. anden;02 03Import org. anddev. andengine. engine. Engine;04Import org. anddev. andengine. engine. camera. Camera;05Import org. anddev. andengine. engine. options. EngineOptions;06Import org.

When I see the title RoundRects of this example, I first introduced RoundRectShape. I opened the example and read the code, but it was implemented using GradientDrawable. GradientDrawable supports the use of gradient color to draw graphics, usually

Android has the following common la s: 1: VIEW component) In android, The View class is the most basic UI class. Basically, all advanced UI components inherit this class. A View occupies a rectangle area on the screen. It is responsible for

AIDL (AndroidInterface DefinitionLanguage) is similar to other IDLs used by you. To enable inter-process communication (IPC), it allows you to define programming interfaces recognized by both the client and the server. On Android, a process

If you need to enter an example table in the text box, you can select a prompt for each element in the input list. The previous AutoCompleteTextView only supports the prompt drop-down box when you enter the first element, in this case, you can use

Content providers manages the use of structured datasets. They encapsulate data and provide a data security mechanism. Content providers is a standard interface for connecting data from one process to another. To use data in a content provider, you

This example describes how to use Map-based data as the data source of the Expandable List. Group and Child are defined as follows: [Java]List groupData= New ArrayList ();List childData= New ArrayList >> (); List groupData= New ArrayList

Directly run the Code:[Java]/*** Screenshot* @ Param v View* @ Param filePath: Save path*/Private void getScreenHot (View v, String filePath){Try{Bitmap bitmap = Bitmap. createBitmap (v. getWidth (), v. getHeight (), Config. ARGB_8888 );Canvas

The constructor of SimpleCursorAdapter is as follows: Public SimpleCursorAdapter (Context context, int layout, Cursor c, String [] from, int []) Context: context object. You can use activity.Layout: layout resource ID simple_gallery_item.xmlCursor:

Introduction: Android is a popular open-source mobile platform in the industry. It has been widely used by many mobile phone manufacturers as mobile phone operating system platforms. Therefore, it is of great importance to study its security

Src and res structure: The module will be analyzed based on the process.First, analyze the initial interface: Start with the manifest file:[Html]... 1. Global JamendoApplicationThe central warehouse pre-processes some information and stores some

In android, there is an easy-to-Forget Html. fromhtml method, which means thatThe strings in the box are HTML formatted, and many of them are supported, However, you must note that escape, for example:Java codeText with markup for [B] bold [/B]And [