parcelable

The previous response explains ibinder. This is a detailed explanation of parcel. The following is an explanation of the android SDK documentation:Parcel is a container mainly used to store serialized data, which can then be passed between processes through the binder (to understand why serialization is required, see: http://blog.csdn.net/nkmnkm/archive/2011/05/28/6451699.aspx ). Parcel can contain the original data types (written using various corresponding methods, such as writeint () and writ

By default, aidl supports Java basic types (INT, long, Boolean, etc.) and (string, list, MAP, charsequence ), how can I implement a custom type? To pass a custom type, first make the custom type support the parcelable protocol. The implementation steps are as follows: 1> the parcelable interface must be implemented for the custom type, and implements the public void writetoparcel (parcel DEST, int flags) me

ibinder interface file in the gen directory..Service must implement this ibinder interface as appropriate. Then the client program can bind the service and call the method from ibinder during IPC.Each aidl file can only define one interface, and can only be an interface declaration and method declaration. Create a. aidl FileAidl uses a simple syntax to declare an interface and describe the parameters and return values of its methods and methods. These parameters and return values can be of any

In Android application development, if we need to transmit data between different modules (such as between different activities), there are usually two methods: 1. Use the intent object to carry data By querying the API documentation of intent/bundle, we can know that,Intent/bundleData of the basic type and array data of the basic type can be transferred, andString/charsequenceTypes of data andString/charsequenceArray data. However, other types of data seem to be powerless. Otherwise, we can

(service); mBound = true ;}@ Override public void onServiceDisconnected (ComponentName name) {mBound = false ;}};Passing objects through IPC We can pass an object from one process to another through IPC. However, we must ensure that this object can be obtained in another process (that is, the code of this class is required), and this class must support the Parcelable interface. Parcelable must be supported

Android uses bundle to pass objects through intent In Android development, you sometimes need to pass objects between applications or between processes, and here's a detailed description of how intent uses bundle to pass objects. The object being passed needs to be serialized first, and there are two ways to serialize the object:java.io.Serializable and Android.os.Parcelable Serializable is used in Java, and Google uses a custom parcelable on Andro

processes. Even if the member variable value passes past, the member method cannot pass the past, and an error occurs if the B process wants to invoke the member method.How to pass an object specifically:1. In process A, the properties of the Non-default values in the class and the unique flags of the classes are packed (this is called serialization);2. Pass this package to process B;3. After receiving the package, process B creates the class based on the unique flag of the class (Java reflecti

This article is from the Linux commune website (www.linuxidc.com) Source Link: http://www.linuxidc.com/Linux/2012-04/58732.htm I. Transmission of list The following is an example of passing list Intent.putstringarraylistextra (key, list); The syntax for receiving list List = (arraylist Here is an example of using: ============= Send listarraylistStringlist.add ("string1");Stringlist.add ("string2");Stringlist.add ("String3");Intent Intent = new Intent ();Intent.setclass

implements the serializable interface in obj The second method (parcelable): Intent intent=new Intent (); Intent.setclass (Mainactivity.this, otheractivity.class); Obj2 obj2=new Obj2 (); obj2.setage ("Obj2.setname"); ("kaming"); Intent.putextra ("obj", obj2); startactivity (intent); Packagecom.example.activity01;importandroid.os.parcel;importandroid.os.parcelable;public classObj2implementsParcelable{privateStringname;privateString Age;publicstringge

(intent); Acceptor: People people = (People) this.getIntent().getSerializableExtra("people");String strData = people.getName() + " " + people.getAge();Toast.makeText(getApplication(),strData, Toast.LENGTH_SHORT).show(); Passing object array: Transfer end: List people = new ArrayList ();people.add(new People("John", 21));people.add(new People("Amy", 20));Bundle bundle = new Bundle();bundle.putSerializable("people", (Serializable) people);Intent intent = new Intent(SendActivity.this, Rc

In Android, there are two main ways for intent to pass objects: Bundle. putSerializable (Key, Object) and Bundle. putParcelable (Key, Object); of course, these objects have certain conditions. The former implements the Serializable interface, and the latter implements the Parcelable interface, the following is an example for you.First, we create a project named ObjectTestDemo.Then, modify the main. xml layout file and add two buttons.View plaincopy to

":" is a global process, and other apps can run through Shareuid and it under the same process.The Android system assigns a UID to each app and has the same UID to share the data.Running through Shareuid in the same process requires that two applications have the same shareuid and have the same signature to be able.The Android system allocates a separate virtual machine for each process, and different virtual machines have different address spaces on memory allocations, which results in multipl

This paper describes in detail the method of complex parameter transfer between Android intent. Share to everyone for your reference, specific as follows: Intent is a medium for passing arguments between activity and activity, between activity and service, and these two typically implement Java basic object types and string delivery.In the actual project, the value between pages, in addition to the above several, often have to pass object object, List type, list I. Transfer of list The follow

I believe that everyone on the Android handler is familiar, but to know, handler on its own is only a shell, the real role in the internal function is the message class, for message this class, I believe we will not be unfamiliar, As you often use the Message.obtain () method. But do you know what the obtain () method does for us, and below I will lead you to the Kingdom of the message, to find out.The first thing you'll be greeted with is this line of code:[Java]View Plaincopyprint? Pu

to an interface-type instance.Ibinder) for type conversion. When writing aidl files, pay attention to the following points:1. The interface name and aidl file name are the same.2. You do not need to add access permission modifiers such as public, private, and protected before interfaces and methods, or use final or static.3. The types of packages supported by aidl by default are Java basic types (INT, long, Boolean, etc.) and (string, list, map, and charsequence). Import Declaration is not requ

1. Implement the parcelable Interface For Android, the transmission of complex types is mainly to convert their classes into basic byte arrays, and data transmission between activities is implemented through intent. For binary data, the passed parameter is putextra (stringName, parcelable value). For example, the bitmap class implements the parcelable interface.

In Android development, the activity between intent using bundle,fragment between and activityty through the setarguments using bundles, for some simple parameter transfer is relatively simple, and there are many ways, This is not introduced. Here is a description of complex parameter passing, such as passing set ArrayList, Object arraylistThe bundle is basically the same, whether it is the parameter passing between the activity or the parameter passing between fragment, or between activity and

techniques of using intent to pass objects.First, Serializable wayThere are usually two implementations of using intent to pass objects, serializable and parcelable, which we'll start with in this section to learn the first implementation.Serializable is the meaning of serialization, which indicates that an object is converted to a state that can be stored or transportable. The serialized object can be transferred on the network or stored locally. As

Intent is a medium for transferring parameters between activity and service, using intent and bundles to pass data between components, both of which typically implement Java basic object types and string delivery. In the actual project, the transfer of values between pages, in addition to the above, there are often the need to pass object objects, List type, listFirst, pass listarraylistListSecond, the use of serializable and parcelable two ways to pa

Actsecondactivity:appcompatactivity () { override fun OnCreate (Savedinstancestate:bundle?) { super.oncreate (savedinstancestate) Setcontentview (R.layout.activity_act_second) val bundle = Intent.extras val request_time = bundle.getstring ("Request_time") val request_content = bundle.getstring (" Request_content ") Tv_response.text =" received request message: \ n Request time is ${request_time}\n request content is ${request_content} "} Below the