privileged process android

We know that the WindowManagerService is running in the SystemServer process. When an application starts an Activity, WMS needs to request WMS to create a corresponding window for the Activity to be started, and WMS is also responsible for modifying window properties, therefore, cross-process interaction between application processes and WMS services is involved. We have introduced the Binder communication

Android INIT process (2); Initialization language (init. Rc) Parsing The software version used in this article Android: 4.2.2 Linux Kernel: 3.1.10 This article and several subsequent articles will analyze the initialization (init) process of Android in detail, and introduce

The Android startup process can be divided into two stages: the first stage is the Linux Startup, and the second stage is the Android startup. Next we will take a look at the specific process. The first step is Linux Startup. I want to skip this part. It is nothing more than Linux Bootloader, Kernel, Driver, and so on.

First, why this article does not introduce the hook system AMS serviceIn a previous article that has been explained in the Android Hook system service, as well as the ability to intercept specific methods, according to the process this article should describe how to hook the system's AMS service to intercept the application's startup process operation, but this a

executes the code under/boot and reads the Android system from the disk and mounts it to the/system directory. Note that the/system in this case is not a concept with the/system partition on the disk mentioned above: The/system partition is the data in the storage device, which is 0 and 1. The/system directory is a directory in the file system. The/system directory is a mount point for the/system partition.Once mounted, it is possible to access the/s

First take a look at the entire process of using the Java language for Android applications from the source code to the installation package, which includes compilations, links, and signatures, as follows: (1) using the AAPT tool to generate R.java files You can create an automatically android project first by building an eclipse development environment, and

First, summarizeSystem Boot Architecture diagram:In the Android system-the beginning of the explanation, from the point of view of the Android system boot, this article is from the process/threading perspective to analyze the problem.1.1 Parent ProcessIn all processes, a process that exists in the posture of the parent

[This article is my translation and summary of processes and threads in Dev guide, and I have added some personal understandings.] Processes in Android By default, all components in the same application run in the same Linux Process. when you start a component A, if there is already a component B in the running state and a and B belong to the same application, component A will run in the

And the thread of the application already exists (because another component of the application is already running), the component will start in the existing process and run on the same thread. However, you can simply schedule different components to run in different processes, and you can create additional threads for any program. Process By default, all components of the same program are running in the s

Transferred from:Http://blog.csdn.net/luoshengyang/article/details/6685853 In the Android system, activity and service are the core components of applications. They are loosely coupled to form a complete application, this is because the application framework layer provides a complete set of mechanisms to help applications start these activities and services, and provides the Binder Mechanism to help them communicate with each other. In the previous ar

Android Aidl, Android process mechanism communication mechanism, here to organize the knowledge of aidl, to help you learn to understand this part of knowledge! What is Aidl Aidl Full name Android Interface Definition Language, an Android interface Description language. It

Design principle and implementation process of pattern unlocking in AndroidIn Android, to unlock a pattern, you must first understand the implementation principle of the pattern. The previous figure shows that the gesture records in the pattern are 1-9 or 0-8, and the password is saved in the order, of course, some of them can be repeated. For the sake of security, the original sequence cannot be stored dir

Many people now want to automate the compilation and packaging of Android projects, such as building a daily build system, generating release files automatically, and so on. All of this requires an in-depth understanding of the compilation and packaging of Android engineering, at least knowing what it does every step of the time, what environment and tools are needed, what the inputs and outputs are. So let

Many people now want to automate the compilation and packaging of Android projects, such as building a daily build system, generating release files automatically, and so on. All of this requires an in-depth understanding of the compilation and packaging of Android engineering, at least knowing what it does every step of the time, what environment and tools are needed, what the inputs and outputs are. So let

Android APK installation process learning notes, androidapk1. What is APK? APK, which is the Android Package and Android installation Package. The installation files on different platforms are in different formats. Similar to Windows, the installation packages are in binary exe format, while Mac installation packages a

Android Development Environment article I. Installation: Required Packages Android requires the following system Packages:flex:This Lexical Analyzer generator is used to read a given input file F Or a description of a scanner to generate. Bison:this is a general-purpose parser generator. Gperf:this is a perfect hash function generator. Libesd0-dev:this Enlightened sound daemon (dev files) are used to mixes

Objective Before we begin, we hope you can best meet the following conditions: 1, have a compiled Android source code (hands-on practice will have a more in-depth understanding) 2, a certain understanding of the binder mechanism This article starts the process analysis based on the Android 5.1 source code. Why is 5.1 of the source code? Because the code compi

Android custom ViewPager (1) -- custom Scroller to simulate the animation process I believe that the ViewPager component provided by the Android SDK is quite familiar to everyone, but ViewPager exists in support. in the v4 package, ViewPager does not exist in earlier android versions. How can we use sliding effects si

Android architect path-process and IPC architecture (1), androidipc 1. IPC Communication 2. android process concept 3. Set IPC Communication 4. IPC interface-definition and implementation 5. Use of the IBinder Interface 6. Step 3 of IPC Communication 7. Short-range communication and remote communication 1. First, let'