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[First written by Steve Guo, please keep the mark if forwarding.]
In this topic you will learn some information about android process management. First let's take a look at the launched processes during Android booting.
User PID ppid vsize RSS wchan PC name
Root 1 0 264 176 c00acc6c unzip c36c S/init
Root 28 1 724 308 c0051354 afe0c4cc S/system/bin/sh
System 30 1
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 Android official source code, and main is in init. C. Our
I found a lot of methods on the Internet and tried them without any effect, so I had to explore them myself.
My method is through broadcasting:Code
Intent broadcastintent = new intent ("mobile. Android. ch10.mybroadcast ");Broadcastintent. addcategory ("mobile. Android. ch10.mycategory ");Broadcastintent. putextra ("boardcasttype", "bdmsg_kill ");Sendbroadcast (broadcastintent );
The above is the code
Previously, we called the Process. start function to create a new Process for the application.
Note that the first parameter is "android. app. activityThread ", this is the Java class to be loaded during process initialization. After this class is loaded to the process, the
#############################################This article is extremely ice original, reproduced please indicate the source#############################################Analysis of the Init process, first to analyze how the init process started, init source is located (system/core/init), we first look at the init process android.mk below is from system/core/ The in
How does Android end a process? I tried to use ActivityManager. killBackgroundProcesses to end the process, but no response was returned.
After android2.2, if start itself is added to the ondestroy service, kill backgroudprocess usually cannot end itself. There is a newly discovered Method that uses reflection to call forceStopPackage to end the
Part 1: Process of sending AT commands from Java.Outbound call process:1. Android: Process = "android. process. acore" in androidmanifest. xml of contacts indicates that the application
Android obtains all process information and obtains the memory used by the process.Package Zhangphil.process;import Java.util.list;import Android.os.bundle;import android.os.debug.memoryinfo;import Android.widget.textview;import Android.app.activity;import Android.app.activitymanager;import Android.app.activitymanager.runningappprocessinfo;import Android.content.context;public class MainActivity extends Act
Android technology 20: Android initialization process, android Initialization
How is the Android system started? How is the application started. The following describes the initialization process.
1.
An example of how android uploads an image, including how to terminate the upload process. If the progress bar is updated during the upload Process (1 ),
First:
Layout is:
Here we convert an image under the Local SD root directory into Bitmap and save it to the tmp folder to be uploaded:
Private class LoadPhotoTask extends AsyncTask
Private String SaveBit
now, you can copy and then long press the switch dictionary to continue to query the next word ....This is the use of the House key, in fact, we all know this usage, but probably did not consider the fact that this is a process of switching between the front and back of the program just ...Finally, a simple summary of all the content, in fact, the whole article means that, press the exit key equivalent to the "real" exit close the program, press the
/base/policy/src/COM/Android/Internal/policy/impl/globalaction. java has a changeairplanemodesystemsetting (Boolean on) method, which writes settings based on whether the on value is true or false. system. putint (mcontext. getcontentresolver (), settings. system. airplane_mode_on, on? 1-0); then send the broadcast:
Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
It's written in front of you.
An android application is a Linux process in which each application runs in its own process, with no distractions and more security.
One application corresponds to a main thread, which is usually called the UI thread, and Android adheres to the single-threaded model, so the UI operation
This article is the sixth article in the Android Kernel Development series, and the previous articles cover the basics of Android kernel development, including: Download of Android source code, introduction of versions and branches, compilation and burning, etc. Starting from this article, we will start to really do the Andro
Analysis of Android Application construction process and android build Analysis
To develop Android applications with ease, we need to have a deep understanding of the compilation and packaging of Android projects. For example, we need to know what each step of the
The directory structure has not changedor the corresponding Package/app/incallui and Package/services/telephonyFile comparisonThe phone call process is basically the same as 4.4. The interface adds a lot of animation effects, and the layout structure is very different from 4.4.The layout of Incallactivity.java 5.0 is as followsUnlike the 4.4, which no longer contains the layout of the Callbuttonfragment answerfragment dialpadfragment, but allMove to t
AIDL/IPC Android AIDL/IPC process communication mechanism-detailed explanation and usage case analysis (player)
First, let's look at AIDL. What is AIDL? IPC? ------ Designing a Remote Interface Using AIDL
Generally, we use Binder and BroadCastReciver in the same process to allow the Service to communicate with the Activity, data interaction, and data sharing. But
Reference article:Http://www.apkbus.com/android-104940-1-1.htmlHttp://blog.sina.com.cn/s/blog_3e3fcadd0100yjo2.htmlFirst, the theory:Android takes a different process management strategy from Linux, and unlike Linux, which ends the process after the process activity has stopped
What is the difference between multi-thread communication and multi-process communication in Android? How to implement them ?, Android Multithreading
When a program is started for the first time, Android starts a LINUX Process and a main thread. By default, all components
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