blueprint binder

The communication mechanism of the Binder is simple, but some problems have been encountered in the use process. Finally, we have solved the problem. Here we will summarize the problems and share them with you: 1. To use Binder for communication, first define the interface, and then implement the BnInterface *** on the server and the client BpInterface ***. In the end, one is to unpackage the parameters, a

), Mhandle = 0Use C code to call NewObject to create a Java Binderproxy objectJavaobjectforibinder (env, B)Object = Env->newobject (Gbinderproxyoffsets.mclass, gbinderproxyoffsets.mconstructor);Set the object's Mobject = Val.get = b = new Bpbinder (0)Env->setlongfield (object, Gbinderproxyoffsets.mobject, (Jlong) val.get ());return object;B. servicemanagernative.asinterfaceNew Servicemanagerproxy (obj); obj = Binderproxy ObjectMremote = obj = Binderproxy object, where Mobject points to new Bpbin

HelloService () is a Java objectA.2 Convert. Cookies to Bbinder objects when processing data, which is a C + + objectTherefore: AddService will certainly convert the Java object into a Bbinder derived class object, which exists in the. cookieConclusion:A.1 AddService will invoke C + + functions via JNI:Create a Bbinder derived class Javabbinder object,It's. Mobject point to Java object: New HelloService ()It contains the Ontransact functionPut this object into a. Cookie (final Binder_node.cooki

Binder communication mechanism is simple, but in the use of the process encountered a number of problems, finally resolved, in this summary, together to share with you: 1, to use binder communication, first to define the interface, and then implement the server bninterface*** and client bpinterface***, after all, one is to unpack the parameters, one is to package the parameters. 2, the server should be able

How to set up the pods of the multi-engineering binder(2014-07-17 13:57:10)reproduced Tags: united Multi-Project Category: iOS development Today, Cocoapods is used more and more, and almost every project will be used. Sometimes our project may be composed of several modules, each module can be used as a separate project, and then all the works are for the main project use, this is the multi-engineering, how to use th

. Set the library Search paths to: $ (srcroot)/. /libsCompile and run to implement the binder(Note: Select Simulator iphone 5.0 simulator, when compiling the static library, the final file will be in Debug-iphonesimulator, even if it succeeds. A file is still red,This is a bug that may be xcode and does not automatically switch pathsBecause $ (built_products_dir) refers to a location that is Build/debug-iphonesos, not a debug-iphonesimulator that cont

On the Internet today, I saw a small example of using C ++ to implement the binder communication, but I didn't provide a complete demo. I made it and sorted it out. I can run it on a real machine. The basic architecture is the same, and the code will not be analyzed. To analyze the Binder Mechanism, you can use it as a template. You need to add or modify functions, that is to say, it is easy to add virtual

"Helloclient"#include "IHelloService.h"................. The header file ......... .......using namespace Android;void Main (int argc,char **argv){ int cnt;　　if(argc ALOGI(stderr,"Usage:\n");ALOGI(stderr,"%s hello\n", argv[0]);ALOGI(stderr,"%s hello , argv[0]);return-1;}GetServiceOpen Drive, MmapspGet Bpservicemanagerspspif (binder = = 0){Alogi ("Can ' t get Hello service\n");return-1;}spCalling the service functionif (ARGC Service->sayhello ();Alog

What is an anonymous service? Any service that is not registered on the ServiceManager is anonymous service.Or take an example of an article to see the code:status_t mediaplayer::setdatasource (int fd, int64_t offset, int64_t length) { status_t err = unknown_error; Const spIn Bpmediaplayerservice, the implementation of Create is as follows:Virtual spJump directly to the server Mediaplayerservice to see the real implementation of Create:SpFrom the code, we can see that service->create (this

Analyze the Java layer's ServiceManager to see how binder is implemented in the Java layer.Public final class ServiceManager { private static final String TAG = "ServiceManager"; private static Iservicemanager Sservicemanager;//iservicemanager is an interface that defines a common (public) method. private static hashmap...The ServiceManager here is just a package whose member variables and methods are static. From the above Scache saved key v

References: Http://blog.csdn.net/baiyanning/article/details/6191682 The previous chapter describes how to binder the server. The next step is how to implement the client program. The client executable program we will introduce is exampleStep 2: Create an exampleclient directory under the framework/base directory to save the client source code: View plaincopy to clipboardprint? $ CD framework/base/ $ Mkdir exampleclient $ CD exampleclient/ $ CD fr

, len, prot, flags, pgoff);up_write(¤t->mm->mmap_sem);if (file)fput(file);out:return retval;} This function is used to obtain available virtual address space (vm_area_struct * VMA) from the current process and obtain VMA in mmap_region, then, call file-> f_op-> MMAP (file, VMA) and call the MMAP-supported driver for processing. The following uses the binder driver as an example.3. Binder MMAP implementation

The binder mechanism implements the IPC and shared memory in different ways, and it takes aValue CopyThe way, the process of passing through the entity follows the Parcelable protocol, the BP side is responsible for writing to the parcel, the BN side is responsible for reading from the parcel restore, the order is agreed by both parties. Prototypes are as follows,the bp/bn end received in factare just clones of each other.。 Aidl (Android Interface Def

Staticcom.willhua.demoaidl.aidl.IBookManager asinterface (Android.os.IBinder obj) {if(obj = =NULL)) { return NULL; } android.os.IInterface iin=Obj.querylocalinterface (descriptor); if(((Iin! =NULL) (iininstanceofCom.willhua.demoaidl.aidl.IBookManager )) {return((Com.willhua.demoaidl.aidl.IBookManager) iin); } return Newcom.willhua.demoaidl.aidl.IBookManager.Stub.Proxy (obj); }...}Androd.os.Binder Part Source: Public classBinderImplementsIBinder {//... /*** Convenie

=Find_svc (S, Len); if(SI) {if(si->handle) {Aloge ("add_service ('%s ',%x) uid=%d-already registered, override\n", Str8 (S, Len), handle, UID); Svcinfo_death (BS, SI); } si->handle =handle;} Else { //Focus here, if the service has not been add, then create a node for it, save the name and handleSi =malloc(sizeof(*si) + (len +1) *sizeof(uint16_t)); if(!si) {Aloge ("add_service ('%s ',%x) Uid=%d-out of memory\n", Str8 (S, Len), handle, UID); return-1; } si->handle =handle; Si->len =Len;

/font_size_40"Android:textsize= "14sp"/>Android:id= "@+id/email_tv"Android:layout_width= "Wrap_content"android:layout_height= "Wrap_content"Android:layout_alignparentbottom= "true"Android:layout_centerhorizontal= "true"android:layout_marginbottom= "@dimen/dp_22"android:text= "Email: [Email protected]"Android:textcolor= "@color/cola0a0a0"/>Generate code such as the following:Content View ElementsPrivate ImageView Mlogo;Private Button mversion_btn;Private TextView Mcompanyname_tv;Private TextView

Android BinderAndroid Interprocess CommunicationThorsten SchreiberFirst Advisor: Juraj somorovskySecond Advisor: Daniel Bu beta Meyer When reading the android binder document, read: 1. the privileged level is called ring in English and must be supported by hardware. Intel hardware implements four privileged levels. Linux uses only 0 and 3. 2. Linux communication mechanism: signal, pipeline, socket, message queue, semaphore, and shared memory. 3. The

, and the service-to-client binding is implemented asynchronously, so the client needs to pass the Serviceconnection Interface to monitor the connection to the service. When the client calls Bindservice, Bindservice immediately returns and then calls Serviceconnection when the Android system establishes a link between the client and the service. Onserviceconnection to inform the client and service that the link was established successfully and to return the client to the Ibind object provided by

The binder is the core mechanism for implementing inter-process communication in the Android system. In essence, it is a specific implementation of the proxy mode, just like COM and CORBA. The basic idea of the proxy mode is that the client program obtains the proxy object of the server in some way. All the service requests to the server are sent to the proxy object, which is responsible for communication with the server. From the client perspective,

[Android] Android Layout Binder -- automatically generates the java code artifact of findViewById Based on the layout Layout file, androidbinder Android Layout Binder is a website that can automatically generate findViewById java code online based on the layout Layout file. Web site is http://android.lineten.net/layout.php How does Android get the custom components in the Layout file in Layout? Fi