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Android-async-http Project Address Https://github.com/loopj/android-async-http,android-async-http, as the name implies, is an asynchronous HTTP request, but it also supports synchronous request , this article mainly uses the android-async-http to do the asynchronous request to down
Android provides a downloadprovider, which is a complete download tool. It provides good external interfaces that can be called by other applications to complete the download. It also provides download, notification, and storage mechanisms.This downloadprovider is used in Android
Today, we will analyze the structure of the/system directory of the android file system.
The/system directory occupies an important position in the android file system. Basically, all the tools and applications are under this directory. In my opinion, it is a real rootfs. It is stored in the mtd3 of NAND flash on the
The last few days is really a variety of significance of the busy, busy exams, but also busy with curriculum design, hand and outsourced projects, the other side of the school project to do, their own things still in the document stage, it is really let people want to die Ah!!
Nearly half a month, C # This aspect of coding more, Android and Java here completely shelved, so take time to write a small example.
This is a very small example of a folder
This article mainly describes, if paused, or network segment, and then there is a recovery, and then continue to download.
First, we'll add the database Greendao
Step 1: First create a Java modle in the project. As shown in figure
Step 2: Create the Dbgenerate file,
public class Dbgenerate {public
static void Main (String args[]) {
//version number \ Package Name
Schema schema = new sc
BAT file content
For/F "delims =" % A in (sdk.txt) Do (Curl-o %)
* Download curl: http://curl.haxx.se/download.html
Sdk.txt content
Http://dl-ssl.google.com/android/repository/android-1.1_r1-windows.zipHttp://dl-ssl.google.com/android/repository/
1. Compile the Souce code of the entire android system. After compilation, three image files ramdisk. IMG, system. IMG, and userdata. IMG will be generated.
2. Unzip ramdisk. IMG:
MV ramdisk. IMG ramdisk.gz
Mkdir out
CD out cpio-I-f ../ramdisk.gz
3. Cross-compile busybox. You only need to compile tar. Can it be from http://blog.chinaunix.net/u/20947/showart.php? Id = 1913228 download.
4.
Start analyzing Android todayRoot file system startup process.When the Android system is started, "init =/init" is usually set in the kernel boot parameters. In this way, if the kernel is successfully mounted to the file system, the INIT program in the root directory is run
Android DDMS connection to the real machine (root), with file explore to see the Data/data folder solutionThe problem is no permission, with 360 mobile phone helper or pea pod is also invisible. The easy way is to use the RE File manager (grant root permission), set data and
Note: Do not delete objects with the * number.
* Accountandsyncsettings.apk synchronization and account settings* Applicationsprovider.apk Application Support ServiceTh.apk Bluetooth (no Bluetooth after deletion)Browser.apk Google browser (replace UC with UC)Calculator.apk calculator (the built-in calculator is weak and can be replaced by other calculator)Calendar.apk calendar (no calendar can be deleted)Calendarprovider.apk calendar Support Service (no calendar can be deleted)Camera.apk comes w
Premise: the phone has root;1. Connect the computer to the phone, open cmd, run the commandADB shell;//because of the Linux kernel for Android, many Linux commands can also be used on Android2. Use root permissions,Su; If you don't have root, you'll be prompted3. Add permissions to the
When the Android system is started, "init =/init" is usually set in the kernel boot parameters. In this way, if the kernel is successfully mounted to the file system, the INIT program in the root directory is run first. What does this program do? We only have rfsc (readthe fucking source code )!!
The INIT program source code is in system/CORE/init of
When the Android system is started, "init =/init" is usually set in the kernel boot parameters. In this way, if the kernel is successfully mounted to the file system, the first task is to run the init in the root directory. Program . What does this program do? We only have rfsc (readthe fucking source code )!!The INIT program source code is in system/CORE/init of
Recently, after porting android2.3 to the cloud6410 platform and successfully mounting the file system, some commands on the Super Terminal fail to be executed, such as mkdir. After reading the materials, you do not have the root permission. You only need to specify the program (shell program) as the root user when starting the shell and modify init. the RC
Today only to understand that the original in the call Vitamio package of the use of their R file, and then move into the ad when there is a problem, but after a long day to solve the problem, but did not understand what the reason.Today's update application has the same situation, inadvertently opened Gen's root directory mom egg! I found that the registration is not the package name I am applying at all.
First of all introduce Android using caching mechanism to implement file download
When downloading files or browsing files online, or in order to ensure the correctness of file downloads, you need to use the caching mechanism, often using softreference to implement.
The SoftReference feature is that an instance of it
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