Differences between getLeft ()/ getX ()/ getRawX () of Android Custom View

When customizing View, if it involves sliding to change the position of the control or setting the position of the control manually, it will inevitably come into contact with getLeft() getX() getRawX(), then what are the differences among the three methods? Let's look at a picture first. Let's look at the View.java source an ...

Posted by pink on Sat, 29 Dec 2018 09:54:07 -0800

Eloquent JavaScript Notes 15: A Platform Game

I haven't seen this kind of game scene for many years. Do you remember Super Mary? Red and white machines used to carry such games. 1. Introduction to the game: 1. The black box represents the player and can be controlled to move forward, backward and jump with the keyboard. 2. Red represents magma. If you encounter it, play over. 3. Yell ...

Posted by ayok on Mon, 24 Dec 2018 22:24:07 -0800

Leaflet Quick Start Guide API

Tip: This tutorial is based on Leaflet's official tutorial, adding some comments and links to help readers learn Leaflet better. There are some inaccuracies or areas to be improved. You are welcome to comment. Leaflet an open-source JavaScript library for mobile-friendly interactive maps Leaflet Quick Start Guide This t ...

Posted by Ghulam Yaseen on Fri, 21 Dec 2018 06:54:05 -0800

MTK Driver (61) - - MT6737 Android N Platform - - - ALSA Driver

MT6737 Android N Platform--ALSA Driver 1. A Brief Introduction to ALSA  ALSA is the abbreviation of Advanced Linux Sound Architecture. It has become the mainstream Audio Architecture of linux. At the core device driver layer, ALSA provides alsa-driver. At the application layer, ALSA provides alsa-lib for us. As long as the ...

Posted by Mr_Mako on Fri, 21 Dec 2018 05:21:06 -0800

iOS Bluetooth Protocol NSData+CRC Verifies NSData Transliteration. c File Import Xcode

In the past two days, iOS Bluetooth data interaction was done. Initially, the company's plan was to use the mobile phone as a Bluetooth slave device to allow the company platform to scan the Bluetooth address obtained by the code on the mobile phone as the only sign to connect in a directional way. However, the scheme was rejected because the ...

Posted by rtown on Thu, 20 Dec 2018 16:57:04 -0800

Read chip registers (including i2c-tools) through I2C on Android phones

Read chip registers (including i2c-tools) through I2C on Android phones tags: Android Linux i2c driver Requirement: Colleagues dump a brand of mobile phone, Android system, need to read out the register configuration parameters of a chip inside. Tossing for two days (pit daddy's network and... xxx wall), record it for future queries Tra ...

Posted by christofurr on Thu, 20 Dec 2018 06:42:04 -0800

bt_btm_sec: btm_sec_disconnected clearing pending flag handle: reason:22

Problems encountered in BLE connection Problems encountered in BLE connection Before the connection, discovery service, reading and writing are normal, today I suddenly clicked on the system Bluetooth page matching. After that, the BLE device can not be connected alive or dead, and the connection will be disconnected imm ...

Posted by little_tris on Wed, 19 Dec 2018 23:12:06 -0800

MTK MODEM (1) - - Basic Functions and Operation of MTK Platform NV

Basic Functions and Operation of MTK Platform NVI. Basic concepts of NVRAMNV is the abbreviation of Non Volatile, which means non-volatile storage. Generally speaking, even if the system is powered down, the data stored in the memory will not be lost.  Why to backup and restore, NV values need to be calibrated and ...

Posted by bsamson on Sun, 16 Dec 2018 12:09:05 -0800

11- vue django restful framework to create fresh supermarkets - user login and mobile phone registration (2)

Vue+Django REST framework Set up a website of fresh supermarket with front and back ends separated Django rtf completes mobile phone registration and user login (2) user serializer and validator validation (registration function) The registration page requires us to enter the phone number verification number and password. django ...

Posted by skorp on Sat, 15 Dec 2018 00:18:04 -0800

RHEL7 and CentOS7 Time Settings (date, hwclock) - System Management (2)

RHEL7 and CentOS7 provide three command line modes to set and display dates and times. Time datectl is part of the newly added system D in RHEL7 and CentOS7. Date is the traditional date and time setting command. The hwclock unit accesses the hardware clock. I. Time datectl [root@Geeklp-Administrator ~]# timedatec ...

Posted by jdh on Fri, 14 Dec 2018 21:06:04 -0800