ams 4113

1. The program portal j2s program portal class is MIDlet, and all the j2s programs must inherit this class to initialize the j2s program. The android program Portal is an activity class. Next let's take a look at their lifecycles. This method is called to initialize the resources required by the user when the agent starts. 2. pauseapp (paused) this API is called when a phone call receives a call. You can call this interface to stop or write operations on the thread. 3. called when the destroyapp

| App_process Process/System/bin/app_processAn AppRuntime object is created at startup. Create a VM instance by calling JNI through the start method of the AppRuntime object, and then run the static main method of the com. android. internal. OS. ZygoteInit class to pass true (booleanStartSystemServer) parameter.ZygoteInit class When running the main method of the ZygoteInit class, a server socket for ActivityManagerService is created using the registerZygoteSocket method. Then, start the System

/com.meizu.media.painter.paintermainactivitystarting:intent {act= Android.intent.action.MAIN Cat=[android.intent.category.launcher] cmp=com.meizu.media.painter/. Paintermainactivity}status:okactivity:com.meizu.media.painter/. Paintermainactivitythistime:355totaltime:355waittime:365complete A total of three results have been returned, and we shall prevail on the WaitTime.The following is an explanation of the difference between Thistime/totaltime/waittime:The implementation of "ADB she

To realize the communication of agents on different machines in the local area network, two problems need to be paid attention to: 1. The protocol about file and printer sharing within the firewall must be opened to ensure the resolution of the machine name. 2. When the communication aclmessage add receiver when the designated legal aid, this aid must have the full name, the second must have the legal addresses. Like the following example import Jade.core.AID; import jade.domain.AMSServic

Before we analyzed the Android6.0 system to install the application at the start of the process, these applications installed, the Launcher application is responsible for their display on the desktop. First, AMS start launcher The launcher application is invoked directly by starthomeactivitylocked in the AMS Systemready method, and the following is the code for the Systemready boot launcher. Starthomeact

) then, a software package that has been installed will pop up and confirm. Click "next" to select all the packages and check them soon.4) Next, we will keep prompting you to choose Y/N. If you have a default value, press Enter. If you do not have a default value, select n.Note: One of the steps is as follows: add the lib library of AMS. There is no AMS library, that is, select 2Prepare libraries for

Activity is the top of the four components of Android , so it is important to focus on, especially the startup mode, the registration information in androidmanifest.xml　　A Life cycle of activity　　1.1.1 Life cycle under normal conditionsDescription(1) For a specific activity, the first boot sequence: Oncreate->onstart->onresume.(2) When the user opens a new activity or switches to the desktop, the callback is as follows: Onpause->onstop(3) When returning to the original activity, the callback is

, the Activity management thread (AmS). Activity is a program fragment defined in Android, this segment can be understood as "programs that can be Dynamically Loaded". That is, when the application thread starts, different activities can be loaded based on user operations. The third part is the Apk application client. The client of each Apk application is executed from the main () function in the ActivityThread class, which is identical to a common Ja

Android Application Startup Process The topic of an app in Android is composed of ActivityThread. However, it involves many details, such as who created ActivityThread and at what time? What is the relationship between it and system service programs, such as ActivityManagerService and WindowManagerService? You need to know about these. There are usually two ways to be started in the system Click the corresponding application icon in Launcher to startMost of these startup methods are initiated

the process of ContentProvider is started, it will be started and published to AMS at the same time. Note that at this time, its onCreate must be first executed in the onCreate Application, this is a rare phenomenon among the four major components. The Start entry is the main method of ActivityThread. The main method creates an ActivityThread instance and a message queue of the main thread. In the attach method, the attachApplication method of

(Intent. ACTION_BATTERY_CHANGED); 4. intent. addFlags (Intent. FLAG_RECEIVER_REGISTERED_ONLY5.Pack up the values and broadcast them to everyone6.7 .} 1.7. Analysis of the broadcast registration process 1.7.1. Static registration process When PackageManagerService starts up, it is responsible for initial PMS Scanning System directories one by one during startup to parse the apk file. Static broadcast receivers are handled by the way when PMS is doing this. PMS will parse the manifest file of the

When PackageManagerService starts up, it is responsible for initial PMS Scanning System directories one by one during startup to parse the apk file. Static broadcast receivers are handled by the way when PMS is doing this. PMS will parse the manifest file of the apk, find the handler registered here, and load it To the memory. The sequence of PMS initialization scan directories: System/framework System/app Vendor/app Data/appd Rm/app-private We can see how PMS parses manifest during initializat

divided into system services and client services. A system service is a service that can be obtained through Getsystemservice (), a client service that refers to a custom service provided by an application.How do clients get binder objects?AMS provides the StartService () function to start the client service. For clients, you can use the following two functions to establish a connection to a service:i) public componentname startservice (Intent Intent

Create an app window one, create a Activity1. The application window must correspond to the ACTIVITY,AMS notification client Activitythread start activity. Reflection Create Activity ObjectSecond, create Window2. The Activity.attach () method sets the internal variable. 3. The Activity.attach () method creates a Window object. Policymanager.makenewwindow () Create (via Com.android.internal.policy.impl.Policy configuration) Create Phonewondow, assign t

Android Window 3: Create an application Window, androidwindow Create application window 1. Create Activity1. the application window must correspond to the Activity. AMS notifies the client ActivityThread to start the Activity. Create Activity object through reflection 2. Create the Window2. activity. attach () method to set internal variables. 3. The activity. attach () method creates a Window object. PolicyManager. makeNewWindow () is created throu

Before we analyzed the process by which the Android6.0 system installed the application at startup, the Launcher application was responsible for displaying it on the desktop after the applications were installed.First, AMS start launcherThe launcher application is initiated directly by calling Starthomeactivitylocked in the Systemready method of AMS, the following is the code that Systemready starts launche

the binder (the Activitymanagerservice is referred to as AMS later), The results returned by this interface include the Thistime, TotalTime time printed above. StartTime the point in time that the startactivityandwait () was just ready to be called Endtime records the point in time that the startactivityandwait () function call returned WaitTime = startactivityandwait () call time-consuming. The calculation of Thistime and Total

the logic of UI access more complex22) lock mechanism reduces the efficiency of UI access because the lock mechanism blocks execution of certain threadsNO6:1) Consider using ThreadLocalWhen some data is scoped to a thread and different threads have different copies of the data. such as Looper, Activitythread, and AMs.2) threadlocal Another usage scenario is the transfer of objects under complex logic, such as listeners. Because parameter passing can

starting mainactivity.The result of the ADB shell am start-w packagename/mainactivity return is the standard application startup time (note that the phone before Android 5.0 is not WaitTime this value): ? adb shell am start -W com. Media. Painter/com. Media. Painter. Paintermainactivity Starting:intent{ act=android.. Action. Maincat=[android.. Category. Launcher]cmp=com media./. Paintermainactivity} Status: OK Activity: com. Media. Painter/. Paintermaina

call Activitymanagerservice through the binder IPC, which is referred to as AMS.　　AMS does the following: it will eventually collect the intent object's pointing information through the Packagemanager Resolveintent () method (the middle will go through many classes, method calls).　　Verify that the user has sufficient permissions to invoke the target activity through the granturipermissionlocked () method,