fips parcel

How to Use Parcelable in android Development To transfer objects between two activities, the object must be serialized. There are two methods to serialize an object in android, one is to implement the Serializable interface, which is very simple, just declare it. However, there is a special serialization method in android, that is, implementing the Parcelable interface. The serialization efficiency of this method is higher than implementing the Serializable interface. However, the Serializable i

(Intent intent) { // TODO Auto-generated method stubreplyString = Thread.currentThread().getName();return mBinder; } public class myBinder extends Binder{ @Overrideprotected boolean onTransact(int code, Parcel data, Parcel reply,int flags) throws RemoteException { // TODO Auto-generated method stubreply.writeString(replyString + " Binder Thread is :" + Thread.currentThread().getName());return true; } } }

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)) {_data.writeint (1); Book.writetoparcel (_data, 0); else {_data.writeint (0); } mremote.transact (Stub.transaction_addbook, _data, _reply, 0); _reply.readexception (); finally {_reply.recycle (); _data.recycle (); }} @Override/* http://www.manongjc.com/article/1547.html/Public java.util.list They are automatically implemented by the compiler, and there are many similarities between the two methods, which can be disclosed here: These are the windows that the

implements com.realize.calc.aidl.ICalcAIDL Next, let's take a look at the onTransact method under Stub. This method implements addition and subtraction internally. @ Override public boolean onTransact (int code, android. OS. parcel data, android. OS. parcel reply, int flags) throws android. OS. remoteException {switch (code) {case INTERFACE_TRANSACTION: {reply. writeString (DESCRIPTOR); return true;} case

When data is transmitted between activities, in order to avoid the trouble, some values are often encapsulated into objects, and then the entire object is passed over. The Parcelable interface and the Serializable interface can be implemented when an object is uploaded.0. Two interfaces are explained:1) the Serializable interface is supported by JavaSE itself.2) Parcelable is a unique feature of Android, which is more efficient than Serializable interfaces. It is also supported for Intent data t

container for data transfer between applications in an Android system, capable of packaging and unpacking data in two processes.But parcel is different from general-purpose serialization, and parcel is designed for high-performance IPC transmissions, so it is not possible to store parcel objects on any persistent storage device.When the data is passed to the ins

When data is passed between activity, in order to avoid trouble, some values are often encapsulated as objects, and then the entire object is passed through. When transmitting an object, there are two cases, one is to implement Parcelable interface and one is to implement serializable interface.One, explain the two kinds of interfaces:1) The implementation of the serializable interface is supported by Javase itself.2) Parcelable is an Android-specific feature that is more efficient than the seri

() {return age ; } public void Setage (int age) { this.age = age; } } 2). Implements Parcelable interface (not only need to declare, but also implement internal corresponding method) A simple example of parcelable: Note: The order in which data is written must be the same as the order in which the data is read. public class book implements parcelable{private String bookname; Private String author; private int publishdate; Public book () {} public String Getbookname ()

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(1) OverviewAndroid's binder Mechanism provides a method for inter-process communication, so that a process can call the functions provided by another process in a way similar to a remote process call. The binder mechanism is provided in both the Java environment and the C/C ++ environment.In the android code, the binder with C/C ++ includes some types and interface definitions and implementations. The relevant code is in the following files: Frameworks/base/include/binder/IInterface. h Frame

Bundle. putParcelable can be used to transmit objects, but the class of this object must implement the Parcelable interface. The following is a simple example of passing objects between activities. Parcel serializes parameters, and serializes class objects into a binary stream in full bits to improve transmission efficiency. Parcelable class. The main class, that is, the class of the object to be transmitted, must implement the Parcelable interface

Objects are transmitted between two androidactivities. To transfer data between android activities, the Intent object method is mainly used. The transfer of basic data types is quite simple, mainly through the following methods: PutExtra method. This is not described here. It mainly transmits object type data. 1. The Object class must first serialize and implement the Serializable interface, and use Bundle. putSerializable (Key, Object) to complete data transmission. 2. The Object class impleme

1. parcelableInterface Interface for classes whose instances can be written to and restored from a parcel. Classes implementing the parcelable interface must also have a static field called Creator, which is an object implementing the parcelable. Creator interface. 2.ImplementationParcelableIt is for serialization. Why is serialization required? 1) permanently Save the object and save the object's byte sequence to a local file; 2) passing objects in t