Programmer Group

This paper is based on Android Studio 3.4.2, gradle:3.2.1 1. What are JNI and NDK? JNI is the abbreviation of Java Native Interface (Java Local Interface) and a bridge between Java and other languages. The main applications in Android are: audio and video development, hot repair, plug-in, reverse development and system source code call. In orde ...

Importance and Method of Point Cloud Filtering Why do 1-point clouds need filtering 1.1 Which situations need filtering Two kinds of existing filtering methods and their application fields 2.1 Straight-Pass Filtering 2.2 voxel filtering 2.3 Statistical Filtering 2.4 Conditional Filtering 2.5 Radius ...

Detailed Installation of mysql in Lamp Environment of Classical web Development Portfolio Pre-installation preparation Check whether mysql has been installed on centos through the rpm command, and then uninstall the existing version of mysql [root@localhost src]# rpm -qa|grep mysql mysql-libs-5.1.66-2.el6_3.i686 [root@localhost src]# rpm -e -- ...

Preface All the Actionlib tutorials have been translated on the Chinese ROS page server and you can view the total directory if you are interested: http://wiki.ros.org/cn/actionlib_tutorials/Tutorials describe This tutorial covers using the simple_action_server library to create a Fibonacci behavior server.This behavior server tutorial ...

How to locate crash crash crash errors in ndk development using android studio In the development of ndk, once the jni layer code has problems, it will print the following information, and then flip back directly. At this time, people are very mad. They can only trace the problem by printing logs in various jni functions, but the efficiency ...

Note: This compilation of MySQL-5.7.19 uses Linux (CentOS7) system Yum-y install make gcc-c + + bison-devel before compilation (Ubuntu and Debian install using apt-get) make, a very important compilation tool under Linux, the most important and basic function is to describe the relationship between source programs through makefile files a ...

Compared with the traditional industry, MySQL has always been the main force of the database in the Internet tide. Whether it was SUN or Oracle now, although the business strategy may be different, the development direction is still stable. So it's embarrassing to say that I don't know MySQL. I can only be regarded as a little white in MySQL. ...

MySQL Compilation and Installation and Construction of Multiple MySQL Instances on Single Host In some special cases, multiple MySQL instances need to be built on a single server to meet the requirements. For example, on the basis of creating the MySQL instances required for normal production in the production envi ...

Detailed configuration of android gradle AppExtension class and its properties Maybe most people will feel very strange when they see the AppExtension class. In fact, when we fill in the configuration information in build.gradle of app, we often see it. What is it? If you press ctrl + ...

cover In the first article of 2018, I mainly explained some concepts of JNI and NDK and how to use CMake build tools to develop NDK in AS 3.0 environment. 1. Understand some concepts JNI(Java Native Interface): Java native interface is a bridge between Java and other native code languages (such as C and C++). NDK(Native Development ...