Interpreting six principles of SOLID with code

Six principles Single responsibility principle definition definition: Ensure that the singleton class has only one instance, and the singleton class provides a function interface for other classes to obtain the unique instance. Explanation: a class is only responsible for one responsibility. There should be no more than one reason for ...

Posted on Wed, 27 Oct 2021 09:45:43 -0400 by ryansmith44

Alibaba cloud hot update EMAS / Hotfix pit climbing record

No more nonsense. We must have compared the advantages and disadvantages. If you don't know what a hot update is    You can baidu by yourself This doesn't mean to belittle any company. Now we all want to find a simple and fast integration method   So I decided to be obedient and not lose, hahaha I had a problem before I sta ...

Posted on Tue, 26 Oct 2021 05:16:54 -0400 by greatstar00

How to set the background of View subclass of live broadcast software source code

Today, we take Button and TextView as examples to see how to set the background of View subclass of live broadcast software source code. Button button The button can respond to the user's click behavior. Place a button in the xml file. <Button android:id="@+id/btn" android:layout_height="wrap_content" android:layout_width=" ...

Posted on Tue, 26 Oct 2021 04:25:43 -0400 by amberb617

Deep and shallow copies of clonable

1, What is clonable Clonable is an interface of java. There is no method to be enforced in the interface. Therefore, this is a marked interface. When implementing this method, you should take the initiative to implement the clone method, otherwise you will throw a clonnotsupportedexception exception. // BEGIN Android-changed: Use native lo ...

Posted on Mon, 25 Oct 2021 08:23:16 -0400 by Hylian

FT4232H Android development 6 - USB to IIC

catalogue   1. Create a new class mpsse_iic 2. Modify mpsse_gpio 3. iic initialization 4. Start of IIC 5. Stop of IIC 6. Read one byte of IIC 7. Send one byte of IIC 8. IIC read operation 9. IIC write operation 10. Verification IIC is implemented by GPIO simulation. In GPIO mode, any IO can be used as the pin of IIC. Here, in o ...

Posted on Mon, 25 Oct 2021 05:52:31 -0400 by mds1256

YUV420,YUV420P,YUV420SP,YV12,YU12,NV12,NV21

preface There are many YUV formats. It's really hard to learn at the beginning. The articles on online search are not very clear. In fact, different YUV formats only have different sampling methods and storage methods. For these two points, different sampling methods are to save memory, and different storage methods are not useful for the tim ...

Posted on Sun, 24 Oct 2021 19:54:55 -0400 by hcspider

The difference between Serializable and Parcelable in Android system

1. Definitions of serializable and Parcelable 1.1 Serializable package java.io; public interface Serializable { } Implementation example: public class Person implements Serializable{ private String name; private int age; public void setName(String name) { this.name = name; } public String getName() { return name; ...

Posted on Sun, 24 Oct 2021 15:39:39 -0400 by raimis100

Basic file operation I

/** File operation class * java IO * File operation using File class ** If you want to develop all files and their contents, you should use java. io package completed * java. There are five core classes and one core interface in the io package* Five core classes: File InputStream OutputStream Reader Writer* A core interface: Serializable * * is ...

Posted on Sun, 24 Oct 2021 13:33:30 -0400 by Edward

Recent learning fragmentation

Six principles of object-oriented design (Reference) Six principles of object-oriented design _fblog CSDN blog _object-oriented design principles) 1. Single function principle, a class can change for only one reason2. The opening and closing principle is open to expansion and closed to modification3. Richter replacement principle: for a class ...

Posted on Sun, 24 Oct 2021 08:28:07 -0400 by Qlubbie

Jump button in recyclview

1> Realize function In Experiment 2, we have realized adding recyclview and corresponding imageview in the wechat like interface. This experiment is to add a button control in recyclview and realize monitoring, so that when the mouse clicks, it can jump to another designed interface. The specific operations are as follows. 2> Add layout ...

Posted on Sat, 23 Oct 2021 05:41:31 -0400 by sgtpepper