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Translation: http://source.android.com/porting/build_system.html
Android uses a custom Generation System Generation Tool, binary files, and documents. This document provides an overview of how to build an android compilation system.
The android compilation
service named "Running", "Restarting ")
Init. RCExample:
-----------------
# Not complete -- just providing someExamples of Usage
#
On Boot
Export path/Sbin:/system/bin
Export LD_LIBRARY_PATH/System/lib
Mkdir/dev
Mkdir/proc
Mkdir/sys
Mount tmpfs/dev
Mkdir/dev/PTS
Mkdir/dev/socket
Mount devpts/Dev/PTS
Mount proc/proc
Mount sysfs/sys
Write/Proc/CPU/alignment 4
IFUP Lo
Hostname localhost
Domainname lo
Brief introductionThis article focuses on the basics and architecture of Android, this article topics:
Profile What Android is and why developers need to focus on Android;
Android architecture (such as Linux Kernel, Libraries, Android Runtime, application Framew
Debugging related to SD card is often encountered in andorid development, such as MP3 files and image files. When developing a simulator, you can simulate an SD card through a hard disk. The specific method is:
(1) Create an SD card image file: Open CMD and go to the tools directory of the SDK directory. Enter the following command: mksdcard64 m sdcard. IMG. This command will generate an sdcard. imgfile in the current directory, which is the SD card image file of the
Course Background:In Android has a very good control mechanism, developers need to know how to use, ordinary users need to know how to distinguish, combined to effectively prevent the spread of the Android platform virus.Core content:1. Define Permissions2. Do permission checking in the code3. Add a permission check for the base componentRequest permission InstanceAndroidmanifest.xml:Activity_main.xml:WebVi
#!/system/bin/sh reboot -p
Note: The shutdown command is not shutdown, but reboot-p.
2. Compile the Android. mk compilation script to compile the two sh files together in the/system/bin directory during source code compilation.
LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)LOCAL_PREBUILT_EXECUTABLES := system_shutdown.sh system_reboot.shLOCAL_MODULE_TAGS
Memory reclaim policy in Android operating system, android reclaim
Memory collection in the Android operating system can be divided into two levels: 1. Default memory collection, that is, the default collection at the Application Framework layer. 2. kernel-level memory reco
Transferred from: http://blog.csdn.net/yabg_zhi_xiang/article/details/51727844Set the default value in the system in Settingsprovider, we can frameworks\base\packages\settingsprovider\res\values\ Default.xml file to see some of the common default values, this time I will explain in detail the meaning of the default. Of course, this is not all the default values, and all defaults are worth defining to view in Frameworks\base\core\java\
.---Media Library: PacketVideo-based Opencore, which supports the playback and recording of many popular audio and video formats, as well as viewing static images. Mainly include MPEG4, H. MP3, AAC, AMR, JPG, PNG and other multimedia formats.--Surface Manager: Manages access to the display subsystem and provides seamless integration of 2D and 3D layer machines from multiple applications.--Libwebcore: A brand new Web browser engine that supports Android
uses the default memory recycle mechanism. If the memory recycle mechanism in the Linux kernel is not disabled, the default recycle mechanism is skipped.Default Recycle ProcessMemory recovery in the Android operating system can be divided into two levels: Default memory recovery and kernel-level memory recovery. This chapter mainly studies the default memory rec
Android. If the memory recycle mechanism in the Linux kernel is not disabled, the default recycle mechanism is skipped.Default Recycle Process
Memory recovery in the Android operating system can be divided into two levels: Default memory recovery and kernel-level memory recovery. This chapter mainly studies the defaul
recycle mechanism of Android. If the memory recycle mechanism in the Linux kernel is not disabled, the default recycle mechanism is skipped.Default Recycle ProcessMemory recovery in the Android operating system can be divided into two levels: Default memory recovery and kernel-level memory recovery. This chapter mainl
permission. Assign the role "malware" to advancedfile manager and super ringtone.Maker. The test is as follows:
5.3 Experiment Analysis
1. 360 Test and Analysis of address book
Because a "game" role is assigned to the 360 Address Book, the smack rule associated with this role has disabled the app that assumes the "game" role from making phone calls, sending text messages, and accessing the address book, therefore, you cannot use the 360 address boo
Android system transplantation and debugging -------) how to add an adb wifi wireless debugging function [developer options]-[Wifi debugging]
First, understand how to set adb wifi wireless debugging function, as shown below.
1. Enable the adb tcp connection port on the mobile phone end
:/$setprop service.adb.tcp.port 5555:/$stop adbd:/$start adbd
Specifically, setprop is used to set
following in the init.rc:
Copy Code code as follows:
# ADBD is controlled by the Persist.service.adb.enable system property
Service ADBD/SBIN/ADBD
Disabled
A friend who has little knowledge of the Android property system will know that the system s
Last month, after spending 1.5 hours, I wrote 55 articles, analyzing the implementation of chromium on Android, and the WebView of Android based on chromium implementations. Learned a lot of things, but also very tired, on average less than two weeks an article. Originally want to rest a period of time, then continue to analyze chromium use of JS engine V8. But o
The Global Positioning System (positioning System,gps) is a medium-range circular orbiting satellite navigation system that provides accurate positioning, speed measurement and high precision time standards for the vast majority of the Earth's surface (98%). GPS is widely used in military, logistics, geography, mobile phones, digital cameras, aviation and other f
What you've been doing with Android is the WYSIWYG editor, the idea is to use the built-in browser WebView HTML5 attribute contenteditable to implement, such as: In the actual application process, because needs to insert the picture, therefore must support uses the camera to take pictures and selects the picture from the photo Gallery the function. There is no problem from the chart Gallery, but when you ta
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