Android Binder inter-process communication mechanism, too realistic

Once a service is implemented, it is not immediately available for others to use. Instead, you need to register the service with the ServiceManager through the Binder driver to indicate that it can be served externally. Let's look at the implementation of the SurfaceFlinger service registration publication code: /*frameworks/native/services/s ...

Posted on Sat, 20 Nov 2021 19:15:58 -0500 by pmaiorana

Architecture e-commerce APP component exploration, in-depth explanation by Ali technical experts

Therefore, the MainModule cannot rely on the other three modules, but if I do not reference other modules, it is obvious that I cannot get the references of these four fragments. One thing is clear, that is, the business modules must not be visible during compilation. There is no doubt about this. However, the runtime is visible, because all mo ...

Posted on Sat, 20 Nov 2021 07:37:49 -0500 by arunkar

Jetpack: Room super detailed use pit guide!

1, Introduction ORM(Object Relational Mapping) relational mapping library provides a layer of encapsulation on Sqlite to optimize the convenience of database operation. The architecture diagram of Room is as follows: Entity: an entity corresponds to a table in the database. Entity class is the mapping of Sqlite table structure to Java ...

Posted on Sat, 20 Nov 2021 07:10:04 -0500 by neo0506

Android storage: the usage of Internal Storage and its difference from External storage

1.Shared Preferences      2.Internal Storage      3. External Storage      4. SQLite Database     5.Network Connection Differences between Internal Storage and External Storage: ======================================== Internal storage belongs to the application and cannot be seen by the file manager. External storage can be ...

Posted on Sat, 20 Nov 2021 01:46:12 -0500 by red-x

Android room tells about object relationship through the story of big head son

Pay attention to official account and learn more knowledge summary sqlite is a relational database, so object relationship is an important part. For example, the data we define includes forests and trees, and forests contain trees. At this time, the defined forest should contain a tree object, which is the object relationship between forest ...

Posted on Fri, 19 Nov 2021 15:34:49 -0500 by mkosmosports

Essential skills for Android architects thread sharing and collaboration for concurrent programming

Status of the thread Six thread states provided in the official Oracle documentation Status nameexplainNEWIn the initial state, the thread is created, but the start() method has not been called, and the thread has not been startedRUNNABLEIn the running state, a thread starts to be executed in the java virtual machineBLOCKEDIn the blocking s ...

Posted on Fri, 19 Nov 2021 07:35:45 -0500 by dbomb101

Research on mobile Internet development technology teaching website project part 7

2021@SDUSC Realization of positioning function private LocationClient mLocationClient = null; private MyLocationConfiguration.LocationMode locationMode; private MyLocationConfiguration.LocationMode mLocationMode; For the first time, you need to make preparations and do not configure the Android positioning SDK of Baidu map. You can obtain t ...

Posted on Fri, 19 Nov 2021 06:51:40 -0500 by imurkid

AppGallery Connect scenario development practice - image storage and sharing

brief introductionIn the last article Scene development practice In, we use the authentication service, cloud function, SMS service and other services of AppGallery Connect (hereinafter referred to as AGC) to realize the function of user registration notification. This time, we used the three services of cloud function, cloud storage and App Li ...

Posted on Fri, 19 Nov 2021 06:32:05 -0500 by asmith

[Android R source code] Activity startup process and life cycle source code analysis

1. Activity life cycle activity lifecycle oncreate()->onstart()->onResume()->onPause()->onStop()->onDestory()  onCreate(): When we click an activity, the system will call the oncreate() method of the activity. In this method, we will initialize the setContentLayout () method of the current layout. onStart(): After the ...

Posted on Thu, 18 Nov 2021 06:00:02 -0500 by manitoon

Advanced Android [2] ten minutes to thoroughly understand the View event distribution mechanism

prefaceAndroid event distribution mechanism is the foundation that Android developers must understandThere are a large number of articles on Android event distribution mechanism on the Internet, but there are some problems: incomplete content, unclear ideas, no source code analysis, complex simple problems and so onToday, I will comprehensively ...

Posted on Thu, 18 Nov 2021 04:40:07 -0500 by dminadeo