parcelable

Special statement: this series of articles are copyrighted by lianlab.org. Please indicate the source for reprinting. The author is Mr. Wu He, Senior Android technical consultant at lianlab.org. Exchange and discussion in this series of articles: @ song Baohua Barry A total of 18 times of serialization, describes the implementation principle behind the android service, and analyzes the RPC related to the binder.Parcel and parcelable when we call a rem

the Parcelable interface provided by Android. And here, because we have extended this concept, we also need to consider several methods that are specifically serialized for the data structure, such as the data that the open API typically returns in JSON format, or our Android native SQLite database for local storage of data. Broadly speaking, these can be counted as the serialization of data.Second, serializable interfaceAs mentioned earlier, the ser

Aidl special handling for passing complex type objects It has been described earlier that passing the system's allowed data through the Aidl interface, if a complex type of object needs to be passed, is less straightforward and requires some extra processing. As follows: In the Aidl file that defines the data interface, use the Parcelable keyword, for example: Parcelable message; Implement the

In general, we use parcelable when we pass objects between activity. such as writing a class, on this class marked implements Parcelable and implementation interface can be used Intent.putextra (String, parcelable). For passing enum objects, it is assumed that this method is also used, that is, like http://stackoverflow.com/questions/2836256/ Passing-enum-or-obje

Android-AIDL LearningDefinition 1 and AIDL: Android Interface Definition Language (Android Interface Definition Language. Android uses AIDL to support inter-process communication (IPC) between services and application components, including components running in different applications or individual processes. This enables the Service to easily support multiple applications across processes. To transfer objects between processes, you need to resolve the data to OS-level primitives, which are imple

Android uses putExtra to transmit data. Android putextra When data is transmitted through intent, use the following code to report an error: hMap However, the following code is normal: HashMap Why is this? I searched for it on the Internet and found that only data that can be serialized can be put in. There are several methods for intent to transmit data: Intent putExtra(String name, String[] value)Intent putExtra(String name, Parcelable value)In

Cause of serialization The reasons for serialization can be summed up in the following three situations: 1. Permanently save the object, save the object's byte sequence to the local file;2. The object is transmitted in the network;3. Objects are passed between IPC. Serialization method In the Android system, there are generally two methods for serialization, namely, implementing the Serializable interface and the Parcelable interface, where the Se

Passing objects on the IPC Channel This can be done if you want to send a class from one process to another through the IPC interface. However, make sure that the code of this class corresponds to the process on the other side of the IPC channel is available, and this class must support the parcelable interface. It is important to support the parcelable interface because it allows the Android system to brea

[0] types of packages supported by aidl by default are 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 the Public void of the

Chapter 5 data-centric-Data Access (3), Chapter 5 Access5.1.3 free operation-serialization and deserialization In Android development, apart from common text and XML files, data is often transmitted or accessed through serialization and deserialization. Android serialization objects can be implemented in two ways: Serializable interface or Parcelable interface. The Serializable interface is supported by Java SE, and

saved objects in the future. This is the function that Java object serialization can achieve. (You can choose to save in the form of a database, or file) (5). When serializing an object, it is only serialized for a variable and not serialized for a method. (6). Between intent, the basic data types are directly related to the transfer, but once the data type is more complex, it needs to be serialized operation. There are two ways to implement serialization in Android: Serializable interface

Two Methods for Intent to pass objects, intent to pass objects Android provides two methods for passing object parameter types for intent. The entity classes must implement the Serializable and Parcelable interfaces respectively. First, we need to know that to pass an object, we need to serialize the object first. I. Why object serialization? 1. Permanently Save the object and save the object's byte sequence to a local file; 2. Use a serialized objec

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 Android. The difference between the two serialization m

Intentbundle transitive objects serializableparcelableandroid sometimes need to pass objects in the app or between processes, the following details intent methods for passing objects using bundles.The passed object needs to be serialized first, and there are two ways of serializing the object: Java.io.Serializable and Android.os.ParcelableJava uses serializable, and Google uses a custom parcelable on Android.The difference between the two serializatio

);// ================================== Receiving List ArrayList ArrayList StringList. add ("string1 ");StringList. add ("string2 ");StringList. add ("string3 ");Intent intent = new Intent ();Intent. setClass (ListDemoActivity. this, StringListActivity. class );Intent. putStringArrayListExtra ("ListString", stringList );StartActivity (intent );// ================================== Receiving List ArrayList List Intent. putIntegerArrayListExtra (key, list ); List = (ArrayList 1. Use Serial

This article transferred from: https://www.zybuluo.com/linux1s1s/note/91046Note: Some of the content is changedUsing serialization in Android is nothing more than two ways: Parcelable andSerializableDifference between the two Serializable's role is to save the object's properties to local files, databases, network streams, RMI for easy data transfer, which can be within a program or between two programs.

; }@Override Public void onservicedisconnected(componentname name) {Mbound =false; } };Passing objects through the IPCWe can implement the transfer of objects from one process to another through the IPC. However, we have to make sure that the object is available in another process (that is, the code that needs the class), and that the class needs to support the Parcelable interface. Parcelable mu

Directory (?) [-] Custom Parcelable Class Aidl file Implementation of the service The implementation of the client Synchronous and asynchronous The articles reproduced can only be used for non-commercial nature, and can not be accompanied by virtual currency, points, registration and other additional conditions. Reprint must indicate the source: http://blog.csdn.net/flowingflying/The method in the previous StockQuote

When passing data through intent, use the following code to error:HmapHowever, it is normal to use the following code:HashmapThis is why, as a small white I searched the internet, found that only the data can be serialized to put in, intent transfer data methods have the following:Intent PutExtra (string name, string[] value) Intent PutExtra (string name, parcelable value) Intent PutExtra (string name, lo ng value) Intent PutExtra (string name, Boolea

There are two ways to pass objects between different Android activities: Bundle 1) Public void putserializable (string key, serializable value); 2) Public void putparcelable (string key, parcelable value) Therefore, the transfer class must be implements serializable or implements parcelable. 1) implements serializable and parcelable: 1) serializable: mobile. Java