Android Database (SQLite) encryption scheme

Recently, because of the security needs of some projects to encrypt the database, the first thing to think about is to encrypt the database through AES, then run the decryption, the other is to encrypt the contents of the database.Soon both of these

How to make your Android program, service never be killed by the system

The following are the specific practices:1. set flag_persistent : in androidmanifest.xml file, add android:persistent=" true " 2.  set flag_ SYSTEM : Put your written application into /system/app/ The directory can be. This

Android Sqlite Read Data 99999.99 becomes 100000.00, appears scientific counting method

Problem Description:the 99999.99 is credited to the SQLite database, and the type is decimal (6,3). change to 100000.00 by Cursor.getstring ()and storage of billions of bits of data: cursor.getstring () will be abnormal, or directly converted to

Android Runtime Art Brief introduction and Learning Plan

The release of art has attracted attention because Andoid has been criticized for its fluency in comparison to iOS. One of the reasons for Android's fluency problem is that its applications and some of the system services are running on top of the

Liaoliang's most popular one-stop cloud computing big Data and mobile Internet Solution Course V3 Android Architecture design and Implementation complete training: hal&framework&native service&android service& Best Practice

This course solves the problem of how to understand the beginner's mind of Android architecture design and develop a featured product with Android system with deep customization and soft and hard integration capability.The course takes the five core

Liaoliang's most popular one-stop cloud computing big Data and mobile Internet Solution course V3 Android Enterprise application Development Complete training: 24 Lessons on Android Business-class development best practices

From the perspective of enterprise-level business practice, 24 hours through 23 hands-on practical cases, the gradual progress of the Android business-level application development points conquer, Based on years of Android (6 complete hardware

Liaoliang's most popular one-stop cloud computing big Data and mobile Internet Solution Course V4 Android Architecture design and Implementation complete training: hal&framework&native service&android service& Best Practice

This course solves the problem of how to understand the beginner's mind of Android architecture design and develop a featured product with Android system with deep customization and soft and hard integration capability.The course takes the five core

iOS multithreaded----Dispatch Queues

Reprinted from: Http://blog.sina.com.cn/s/blog_6dce99b10101atsu.html, respecting the original!a detailed description of the concurrency of iOS development applications dispatch queues is the content of this article, we can almost dispatch the queue

Android Learning notes-How to save data 1

Android development, sometimes we need to save information, then today to introduce, save the file to memory, as well as some of the SD card operation, and methods for reference.First, save the data in memory:The way in which data is saved in Java

IOS Xml/json Parsing

Click to open Download link Ios,xml/json parse // finterpretervc.m//finterpreter////Created by Lanouhn on 14-9-11.//Copyright (c) 2014 [email protected] Chen Conglei. All rights reserved.//#import "FInterPreterVC.h" #import "Person.h" #import

Linux App Source-level compilation installation

The first thing you need to know about the tar package.The following articles provide explanations:Http://www.cnblogs.com/laipDIDI/articles/2214270.htmlHttp://baike.baidu.com/view/3146273.htm?fr=aladdin************************************************

Visibility properties in Android the difference between visible, INVISIBLE, gone

reprinted from: http://blog.csdn.net/chindroid/article/details/8000713in Android development, most of the controls have the visibility attribute, with 3 properties of "visible", "invisible", and "Gone" respectively. Used primarily to set the display

Mu Class Network-android engineer first form break of -4-11 Java loop jump statement

Source: http://www.imooc.com/code/1431In life, we often interrupt the scheduled task for some reason. If the 10000-metre long run, only ran 500 meters due to lack of physical strength, need to quit the game. In Java, we can use the break statement

"Android Official document Reading notes" save data

Android offers 3 ways to save data:sharepreference, files, and databases. 1,sharepreferenceIf you want to save a relatively small collection of key-values, you can use the Sharedpreferences API. The Sharedpreferences object points to a file that

Mu Class Network-android engineer first form the continue of -4-12 Java loop jump statement

Source: http://www.imooc.com/code/1432The function of continue is to skip the remaining statements in the loop body to perform the next loop.For example, to print all the even numbers between 1--10, use the continue statement to implement the

Android App development: Animation development--xml Animation

IntroductionToday, Android, iOS, the world, what Tizen, COS blabla are ants, a look at know is to send leadership or to spend research and development funds output products, is not to win the market, for just won the leadership a smile, completely

Mu Net-android engineer first form -4-3 Java conditional statement Multiple if

Source: http://www.imooc.com/code/1355If the multiple if statement is not satisfied with condition 1, the condition 2 is judged, and the code within the Else block is executed when the preceding conditions are not true. For example, if the test

Android encode and decode important data stored in sharedpreference

Sometimes the user name and password are saved in sharedpreference for easy login, but if the password is not processed it will be saved in clear text.The Java layer in Android provides the tool class: android.util.Base64; encode and decode the

Compiling iOS version of Librtmp+openssl

Transferred from: http://blog.csdn.net/cjj198561/article/details/28955461Compiling librtmp requires you to compile OpenSSL first, because Librtmp relies on OpenSSLFirst compile OpenSSL:Save the following as a shell script:#!/bin/shversion= "1.0.1h" #

Android edit box (EditText) attribute learning

EditText Inheritance Relationship: View-->textview-->edittext   EditText has a lot of properties, here are a few:Android:hint= "Please enter a number!" "//Set the information displayed on the spaceAndroid:numeric= "integer"//set to enter only

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