Thanks to "The Android source design pattern analysis and the actual combat" He Honghui Guan
The adapter pattern is extremely high in our development and can be judged from the adapter that are ubiquitous in the code, from the earliest ListView, the GridView, to the current Recyclerview all need to use adapter, and the optimization problems we encounter in devel
Situation Description:Today in the writing of data display, using the ListView, in its adapter, found that the number of times the GetView method execution is the data item n times (my side of the display is 4 times times, this times the value does not know will change), this is obviously unscientific!Check the data and find the layout problem of the ListView. I set the android:layout_height= "wrap_content" Height to wrap_content. While the Wrap_conte
By using this method, you can connect a mobile device (iphone, ipad, or mobile phone) to the Internet through a wireless network card of a laptop.Microserof virtual wifi miniport adapter is a new feature of Windows 7, which is called virtual wifi.The virtual Wifi function in Windows 7 can Virtualize a network card based on a wireless network card, so that the AP function of the wireless router can be realized, and wireless devices can share the Intern
Generally, the client class accesses the services it provides through the class interface. Sometimes, an existing class (existing class) can provide the functional requirements of the customer class, but its interfaces are not necessarily expected by the customer class. This is because the existing interface is too detailed or lacks details or the interface name is different from the one found by the customer class.
In this case, the existing interface needs to be converted to the desired interf
Copy CodeThe code is as follows:
/**
* Adapter Mode
*
* Convert a class's interface into another interface that the customer wants, using classes that are inherently incompatible to work with and can work together
*/
This is the original type.
Class Oldcache
{
Public Function __construct ()
{
echo "Oldcache construct
";
}
Public function Store ($key, $value)
{
echo "Oldcache Store
";
}
Public function Remove ($key)
{
echo "Oldcache remove
";
}
Pu
The principle of this pattern is very simple, please see the example below.
1. Class Diagram
2. Java Implementation CodePackage cn.edu.ynu.sei.defaultAdapter;
/**
* Interface a* This interface has 5 methods, F1~f5
*
* @author 88250
* @version 1.0.0, 2007-8-31
*/
public interface Interfacea
{
public void F1 ();
public void F2 ();
public void F3 ();
public void F4 ();
public void F5 ();
}
Package cn.edu.ynu.sei.defaultAdapter;
/**
* Default Ad
Introduction
In project development, there are times when you need to use "some existing objects" that were previously developed, but the interfaces required in the new environment are not satisfied by these existing objects. How do you respond to the need for such migrations? This makes it possible to reuse these objects to meet the new application environment, which is the problem that the adapter (Adapter
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Adapter Mode Laptop Adapter
Adapter ModeUse Cases:
MM's form was a mess, and promised mm to send her a notebook. Mm may be broken down. ^_^ but because cousin and mm are not in the same city, the lapto
Converts an interface of a class to another interface that the customer wants. classes that are originally incompatible and cannot work together can work together.
The code is as follows:
/**
* Adapter mode
*
* Convert an interface of a class to another interface that the customer wants. classes that are originally incompatible and cannot work together can work together.
*/
// This is the original type
Class OldCache
{
Public function _ construct (
Converts an interface of a class to another interface that the customer wants. classes that are originally incompatible and cannot work together can work together.
The code is as follows:
/*** Adapter mode** Convert an interface of a class to another interface that the customer wants. classes that are originally incompatible and cannot work together can work together.*/// This is the original typeClass OldCache{Public function _ construct (){Echo
Copy the code code as follows:
/**
* Adapter Mode
*
* Convert a class's interface into another interface that the customer wants, using classes that are inherently incompatible to work with and can work together
*/
This is the original type.
Class Oldcache
{
Public Function __construct ()
{
echo "Oldcache construct}
Public function Store ($key, $value)
{
echo "Oldcache store}
Public function Remove ($key)
{
echo "Oldcache remove}
Public function F
In STL algorithms, function pointers and function-like passing algorithms can be used.
So why do we still need regular function adapters?
Because regular function adapters do not have the "matching capability"
Example:
/** File: Main. CPP * Author: Vicky. H * mail: eclipser@163.com */# include
5
Member function adapter:
/** File: Main. CPP * Author: Vicky. H * Email: eclipser@163.com */# include
BCDB---------------------------BCDB
What is the adapter, said the text, the adaptation should be a verb, and the use of ancient prose should be used to make use of the law, translation into, so ... A device that fits the old things and works with new things.Once upon a time, I was fortunate enough to have sold a laptop, and it was there that I first heard the word adapter. A small black block connected to the power supply and computer, which
The adapter mode converts an interface of a class into another interface that the client expects, so that the two classes that cannot work together due to interface mismatch can work together.________________________________________Usage of the adapter ModeUsing electrical appliances as an example, the plug of the laptop is generally three-phase, that is, in addition to the anode and cathode, there is also
Body
We know that the most important and difficult UI control in Android is the ListView list control, and you have to use the adapter adapter to use it flexibly, so I think it's necessary to learn about the adapter pattern in Java (no matter if you can use it later), After all, the Java language is a very important foundation for Android development.
Fully und
In the book "Java and Patterns" of Dr. Shanhong, this describes the adapter (Adapter) Pattern:The adapter mode transforms the interface of one class into another interface that the client expects, so that two classes that would otherwise not work together because of an interface mismatch can work together.
purpose of Ad
The adapter mode transforms the interface of one class into another interface that the client expects, so that two classes that would otherwise not work together because of an interface mismatch can work together.purpose of Adapter modeUsing electrical appliances As an example, the laptop plug is generally three-phase, that is, in addition to the anode, cathode, there is a polar. And in some places the po
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As mentioned above, a user has taken the industry standard switch (a standard standardswitcher, which relies on the istandardswitchable interface to work, but currently our lamp does not support this interface) and appears in front of me, he shouted that his "Standard switch" should be able to turn on our lights. Well, this requirement is reasonable and should be supported. But the damn thing is, why didn't we know the standard as ea
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