parcelable

Parcelable is an interface in which objects that implement the interface can be passed efficiently in the program. The object that is actually passed is parcel. According to the documentation, parcel is designed to be a high-performance IPC communication, not for persistent storage.Realized before the feeling is quite complicated, today I feel as if it is very simple.First, we write a book class that represents the data item. Public classBook {Private

Problems with custom object serialization in Android there are two choices one is parcelable and the other is serializable.A serialization reason:1. Permanently save the object, save the object's byte sequence to the local file;2. Passing objects through a serialized object in the network;3. Passing objects between processes through serialization.Second, the following principles can be used to select which of these:1. When using memory,

this method.There are two more special methods that can be found in overloaded methods:PutExtra (String name, Serializable value): IntentPutExtra (String name, parcelable value): IntentSerializable and parcelable are two interfaces respectively, so to transfer objects, you just need to make the class implement one of these two interfaces on the line.Let's take a look at the serializable implementation, cre

The two methods of the Android intent delivery object (serializable,parcelable) are described in detail Today I want to tell you about how to pass objects in Android intent, as far as I know there are two ways, one is bundle.putserializable (Key,object), the other is bundle.putparcelable ( Key, object); Of course, these object is a certain condition, the former is the implementation of the serializable interface, and the latter is the implementation

Android Parcelable vs Serializable, androidparcelable Serialization In Android, objects cannot be directly transmitted between activities as Intent parameters before being serialized.In Android, Object serialization can be achieved through the Serializable interface or the Parcelable interface. Next, I will introduce how to implement these two interfaces and how to select between them. Serializable Serializ

comparison of Serializable and Parcelable 1. When using memory, parcelable analogy serializable high performance, so we recommend the use of Parcelable class.2.Serializable generates a large number of temporary variables when serializing, causing frequent GC.3.Parcelable cannot be used to store data on disk, because

I want to make calls to music using parcelable, so I can access the class of two instances of music in different activities. I don't want to use the purpose of serializable speed. When I try to use it to pass, I always receive nullpointerexception:Intent in = getIntent();thisInstance = (Music) in.getExtras().get("MusicInstance");Music classes: (ArrayList is at the bottom of the top and Parcelable Class)publ

public class Bill implements parcelable{//order number public int orderid;//original system idpublic int oldid;//Order address public String address;// Order notes public string ext;//order telephone public string mobile;//order user name public string name;//paid amount public double payed;//order time public St Ring date;//Order Total public double total;//required payment public double pay;//store name public string shopname;//store phone public st

Reference Blog http://blog.csdn.net/yangzl2008/article/details/7593226Due to the project needs, the activity is to pass a particularly complex data structure object, because the previous serialization is directly using serializable, but serializable can not pass the complex data structure, view the method of the bundle, know parcelableThe use of parcelable looks complicated, but it is also quite simple, that is, using the Writetoparcel (Parcel Dest,in

Experience is constantly accumulating small knowledge. Parcelable is not recommended, but serialization is not recommended to transmit data between activities.Why is Android not using the built-in Java serialization mechanism? It turns out that the android team came to the conclusion that the serialization in Java is far too slow to satisfy Android's interprocess-communication requirements. So the team builtParcelable solution.The

Import Android.os.Parcel;Import android.os.Parcelable;public class person implements parcelable{Private Integer ID;private String name;Private String Pass;Public person () {Super ();}Public person (Integer ID, string name, String pass) {Super ();This.id = ID;THIS.name = name;This.pass = pass;}Public Integer getId () {return ID;}public void SetId (Integer id) {This.id = ID;}Public String GetName () {return name;}public void SetName (String name) {THIS.

Bundle.putparcelable can implement passing objects, but the object's class must implement the Parcelable interface before it can be used. Here is a simple example of passing an object between the activity. Parcel realizes the serialization of parameters and serializes the class objects into homogeneous binary streams to improve the efficiency of transmission. Parcelable class. The main class, which is

The use of Parcelable serialization. For the use of intent. getParcelableArrayExtra, intentparcelable Parcelable is more efficient than Serializable public class ChargeMode implements Parcelable{ public String name; public int playway; public String price; public String validTime; public ChargeMode(){ } private ChargeMode(Parcel in){

next , we'll discuss how to use Parcelable to implement an object transfer between intentI. Implementation of Object passingFirst create the User.java implementation Parcelable interface:package org.yayun.demo;import java.io.serializable;import android. R.integer;import Android.os.parcel;import Android.os.parcelable;public class User implements parcelable {privat

Data may be transferred between activities. If it is a basic type and a string type, it is easy to do. Android already provides related APIs. However, if you want to pass an object class, such as a friend class: buddyinfo, there is no relevant API for calling. You can use parcebale at this time. ViewCode: Entity class: Import android. OS. parcel; import android. OS. parcelable; public class buddyinfo implements

Android offers a new type: Parcel. This class is used as a container for encapsulating data, and the encapsulated data can be passed through intent or IPC. Except for the base type, only classes that implement the Parcelable interface can be placed in parcel. The Android platform contracts data definitions that can be passed through the process communication (IPC) mechanism, which must implement the Parcelable