Programmer Group

Android Direct Response Notification Direct response to notification Android N/7.0 Android Direct Response Notification Preface Create notification Create notification objects Add an Action Add a Broadcast Receiving Action Event Add Direct Response Input Box Send the contents of the direct reply to the broadcasting receiver Br ...

Panoramic virtual walkthrough actually sees many examples, such as panoramas on maps, panoramas on campus, panoramas of companies that were previously popular in the circle of friends. But really think of to study or realize, is a few days ago that there may be such a need for work. Awareness comes too late and curiosity is not enough. Why did ...

Screen adaptation in Android is often a headache. Various screen resolutions bring us a lot of trouble in adapting. Google officially suggests that we use dp instead of px, but most of the designer's drawings are marked with px, which makes us feel uncomfortable when writing xml files. I believe that no programmer is willing to spend a lot of ...

This is mentioned last time in the getChildMeasureSpec method of ViewGroup, which means that the father View already has the actual value (the width (height) of the parent ViewGroup in Xml is defined as the actual value, not wrap or match). // Parent has imposed an exact size on us case MeasureSpec.EXACTLY: i ...

Building TCP Server Node implements HTTP server in the form of http.Server pseudoclass, which inherits from TCP server pseudoclass in. net Server. TCP server declaration cycle var server = require('net').createServer(); var port = 4001; server.on('listening',function(){ console.log('server is listening on port',port); }); server.on( ...

Introduction: I was used to the development of Framework layer before. Today I am interviewing the development of APP client in Wuhan Dogfish Company. One of the questions is about the advantages and disadvantages of Asynctask. I depend on it. I just know that there is such a thing that I can use it. It seems that the life before is too comfort ...

The knowledge about Android's customized view is an unavoidable knowledge module for both interviews and in-depth study. Some of the open source controls we use are hundreds of lines of code, which makes it difficult for us to customize the view. But when we read articles like Guo Lin, Ren Yugang, a well-known blogger, explaining customized vi ...

I. Foundation Chapter 1.1 JVM 1.1.1. Java memory model, Java memory management, Java stack and stack, garbage collection http://www.jcp.org/en/jsr/detail?id=133 http://ifeve.com/jmm-faq/ 1.1.2. Understanding various JVM parameters and tuning 1.1.3. Learn to use Java tools jps, jstack, jmap, jconsole, jinfo, jhat, javap, … http: ...

brief introduction Java Code is very easy to decompile. In order to protect Java source code well, we often confuse the compiled class files. ProGuard is an open source project that obfuscates code. Its main function is confusion, of course, it can also reduce the size of bytecode, optimization, etc., but those are seconda ...

There is a perverted requirement in project development, which requires exporting the whole page to pdf format, and keeping all tables, svg pictures and styles on the page.In short, you want to cut off the whole page like a screenshot and save it as pdf.Why can't we go to heaven -- -- ___________After checking, there are still many ways to conv ...