how to extract files on android

After several days of attacks, android should be an entry point. Now let's review it and give it to those who need to learn android.I used to learn C ++ embedded systems and write programs under wince. I have never done anything about java. I spent half a day browsing the java syntax and watched a video about environment setup, project establishment, and activity introduction in "Lao Luo android development

Android stores and loads local files (external storage devices) and android storage devices Sometimes the application needs to write data to the external storage of the device. If you want to share music, images, or online data with other apps or users, it is easier to share data stored on external devices. In addition, external devices usually have larger storag

the function declaration in the generated. h does not have a formal parameter, you need to add the parameter variable yourself when you implement it.Also note that you want to add a carriage return (the characteristics of the GCC compiler) after the blue curly braces.4. Making the. mk FileCreate a TXT file under this folder by creating a new plus folder under the Apps directory in the NDK directory.Enter the content:App_project_path: = $ (call My-dir)App_modules: = PlusRename to Application.mkI

Secondary packaging of Android apps (APK files), Android apk Many developers, whether individual or company, do not pay much attention to the security of their own applications, that is, whether the code will be tampered with by criminals, malicious code insertion, spam ads, or even theft of user information. I did not care too much, but I did not find the severi

BKJIA Editor's note: Android consists of four main components: Activity, ContentProvider, Service, and Intent. To run Android files, you need to read and write files from four components. This article describes how to read and write Android

[Android-tips] Unable to execute dex: Multiple dex files define solution, android-tipsdex Well, I already thought about not moving android in the future. I didn't expect it to be a heavy job because of the competition. Android has many problems due to incomplete eclipse. For

How does Android find appropriate resource files based on the delimiter ?, Android resource file Reprinted please indicate the source: http://blog.csdn.net/zhaokaiqiang1992 This article mainly introduces how the Android system filters and selects resource folders based on certain rules when we use a qualifier to mo

Cause: After updating ADT and other support libraries in Sdksdk Manager, eclipse error: This Android SDK requires Android Developer Toolkit version 23.1 errors. But SDKSDK manager clearly shows that 23.1 of ADT is already installed, which is strange.Workaround: Help, Install New software, ADD->http://dl-ssl.google.com/android/eclipse/after you update ADT here, ev

Cause: After updating ADT and its supporting libraries in Sdksdk Manager, eclipse error: This Android SDK requires Android Developer Toolkit version 23.1 errors. But SDKSDK manager clearly shows that 23.1 of ADT is already installed, which is strange.。Workaround: Help,Install New software, ADD->http://dl-ssl.google.com/android/eclipse/after you update ADT here. E

There are four main components of Android: Activity, ContentProvider, Service, intent. The operation of the Android file mainly requires reading and writing four components of the file. This article will show you how to read and write Android files and want to be helpful to friends who are developing

implemented the functionality, and then we're going to deploy the project to the Android simulator,Test it:As you can see, our file is already saved, and here we need to find out where this file was saved.First, we need to open the File Explorer view:We can find the Test.txt file in Data->data->cn.itcast.files (this is the project's package)->files this directory, and then we export it to the desktopYou ca

Some time ago, I processed Android music file information. I checked online and found that the Android system provided mediascanner, mediaprovider, mediastore, and other interfaces and provided a set of database tables, share content to users through content provider. Description: [Android data is private] data can be shared through the content provider method. I

As the project becomes more and more, the reuse of code becomes more and more important, so it is necessary to do modular programming, that is, to make some common components or class libraries into a separate module, other projects directly to the reference. The Android library is the most common for Android development, and it's cumbersome to quote the Android

Use so files in Android:Do a PDF reading function, find an open source library, Mupdf. Download is compiled on-line so library, import into their own project time has been error Java.lang.UnsatisfiedLinkError:Couldn ' t load netplayerlibq:findlibrary returned NULL, The method in the so file could not be found. Looking for an afternoon, finally know the reason.The naming conventions for methods in JNI are1) Prefix: Java_2) The fully qualified name of t

Android XML file read/write Package com. eboy. service;Import java. io. InputStream; Import java. io. OutputStream; Import java. util. ArrayList; Import java. util. List; Import org. xmlpull. v1.XmlPullParser; Import org. xmlpull. v1.XmlSerializer; Import com. eboy. domain. Person; Import android. util. Xml; Public class PersonService {Public static List List Person person = null;XmlPullParser pullParser

Android Developer: merge list files Android Studio is built based on Gradle. Each App can contain configuration files in multiple locations, such as productFlavor, library, and Android ARchive (AAR) in the src/main folder) bundles of And