Programmer Think

- Restore content to start Preface Lonely fragrant self-admiration, a package of fanghua; Humanity is cold and warm, free in the heart; Climbing high and looking far ahead; Laugh and lie. The last article introduced the basic use of Bluetooth, writing demo is not very perfect, I hope you gods can correct. In the past two weeks, due to the progr ...

1 Database Creation under Android When do we use databases for data storage? When large amounts of data with the same structure need to be stored. MySQL SQL Server 2000 SQLite embedded lightweight SqliteOpenHelper Create a database step: 1. To create a class integration SqliteOpenHelper, you need to add a constructor to implement two method ...

Reload address: http://www.cnblogs.com/ldq2016/p/5237694.html SQLite plays an important role in Android development. There are many online tutorials for SQLite, but most of them are not very comprehensive.I have summarized some common methods of SQLite and shared them with you through the competition in the forum.Introduction to SQLite1. I ...

There are many system controls in Android system that we often use in our daily development, such as keyboard, camera, album, telephone, short message and so on. Today, the Tao Chief speaks about the basic calls of mobile phone albums and cameras, the system's own cuttings and customized cuttings. Let's get up... Basic Call of Camera Jump ...

Preface Studying android animation shows that svg vector animation works well. W3c has a complete introduction. Follow the api What is SVG? Enter w3c SVG refers to Scalable Vector Graphics. SVG is used to define vector-based graphics for networks SVG defines graphics in XML format The quality of SVG image will not be lost when it is e ...

java callback mechanism Classical examples In the past, I did not understand what callback was. Every day I heard people say to add a callback method. I thought to myself, what is called callback method? Then I look for it on the internet, and I don't know much about it. Now I know that the so-called callback is to call a method C of class ...

Definition Observer mode (Publish and Subscribe mode) - Define one-to-many dependencies between objects, so that when an object changes state, the objects that depend on it are notified and updated automatically. Use scenarios In the context of association behavior scenarios, it should be noted that the association behavior is sepa ...

Preface: Inter-process Communication (IPC) refers to the communication between processes. Generally speaking, an app has only one process, but may have multiple threads, so we use multithreaded communication, such as handler,AsyncTask. But in some special cases, we need multiple processes in our app, or we need to communicate across processes w ...

JPay Second encapsulation of WeChat App Payment and Alipay App Payment, providing a relatively simple interface and callback of payment results GitHub:https://github.com/Javen205/JPay OsChina:http://git.oschina.net/javen205/JPay Usage method 1. Introduction compile 'com.javen205.jpay:jpaysdk:latest.release.here' 2. Android Manif ...

Add a Unified Refresh Event for your APP > Recently I saw a friend's blog and wrote an article. Tips for Controlling Page Refresh > I think my idea is quite different from his. Write about my own control refresh event here <br/>. First Take my recent project as an example. We want to make a unified refresh for all the interfaces th ...