compress files on android

Preface: The previous article wrote the use of Sharedpreferences in Android to save data, sharedpreferences when saving data is mainly to save some application settings information or a small amount of user information, And it is the information of the string class saved in the form of Key-value, which is more limited.For example, you need to save images from the network to local as cached data, and the number is larger. Sharedpreferences will not be

Android transfers images or other files in the memory card to another path. This is a simple problem, but it is also a problem we often encounter, that is, how to store images or other files on the memory card during Android development, then we can process this file. Because we cannot process the original file, we are

Android uses Io streams to read and write files in the same way as javase. In addition, Android uses the javase Io stream. Next we will use an exercise to learn how to read and write Android files. 1. Create an android Project P

Preface: The previous article wrote the use of Sharedpreferences in Android to save data, sharedpreferences when saving data is mainly to save some application settings information or a small amount of user information, And it is the information of the string class saved in the form of Key-value, which is more limited. For example, you need to save the image from the network to local as the cache data, and the number is large, sharedpreferences can no

Android-save several formats as jpeg files // 1. the YuvImage class in NV21 format is used for storage efficiency. String fileName = "IMG _" + String. valueOf (index) + ". jpg "; File sdRoot = Environment. getExternalStorageDirectory (); String dir = "/picture/"; File mkDir = new File (sdRoot, dir); if (! MkDir. exists () {mkDir. mkdirs ();} File pictureFile = new File (sdRoot, dir + fileName); if (! Pictur

This article is an example of the Android implementation of the intent method to open various files. Share to everyone for your reference, specific as follows: Import android.app.Activity; Import Android.content.Intent; Import Android.net.Uri; Import Android.net.Uri.Builder; Import Java.io.File; Import android.content.Intent; Custom Android Intent class,

sdcard in cmd. Go to the tools directory under the android SDK installation path and run the following command: Emulator-AVD name_avd-sdcard. img Here, name_avd is the name of an existing simulator, and sdcard. IMG is the SD card image file created in step 1. B. In eclipse, when creating a simulator, specify the path of the SD card image file and add support options for the SD card. Open eclipse and go to window>

Please kindly advise: Use PULL to parse XML files: On the Android platform, you can use Simple API for XML (SAX), Document Object Model (DOM), and the pull parser that comes with Android to parse XML files. The XML file to be parsed in this example is as follows: File Name: csdn. xml This file should be placed in the i

This is a relatively simple problem, but also we often back to the problem, that is, in the development process of Android, how to transfer memory card pictures or other files, and then processing this file, because we can not process the original file, is currently doing a picture of the Android project, So use this knowledge, and share it with you.private void

This paper illustrates the method of compressing and decompressing the zip file with Android. Share to everyone for your reference. Specifically as follows: Dirtraversal.java is as follows: Package com.once; Import Java.io.File; Import java.util.ArrayList; Import java.util.LinkedList; /** * Folder Traversal * @author Once * * */public class Dirtraversal {//no recursion public static linkedlist The Ziputils.java is as follows: Package

friend of the Chinese version of Android APK, you should be familiar with these tools: The first tool is Android-apktool, a tool for reengineering Android APK files. This tool is the core of APK crack. It is used to decompile and repackage APK files. It is a well-known open

Some third-party libraries are developed based on J2SE, which have resource files, such as properties, that are filtered out when Dex is compiled, causing the class to be inaccessible when it reads resources.The workaround is to load the third-party class library with the runtime.1, the third-party class library with DX packaging2. Compress the packaged Dex files

1. Because you need to delete files, you need the following permissions: 2. Core code [Java]Package com. example. deleteyoumi;Import java. io. File;Import android. OS. Bundle;Import android. OS. Handler;Import android. OS. Message;Import android. app. Activity;Import

[Android development experience] What Should cached files of an APP exist? After reading this article, you should be clear about it. androidapp Reprinted please indicate the source: http://blog.csdn.net/zhaokaiqiang1992 As long as it is an APP that requires online data retrieval, cache files will be generated locally, regardless of version update or image cache.

1. Introduction to log file categoriesReal-time printing mainly involves logcat main, logcat radio, logcat events, tcpdump, and qxdm logs on the Qualcomm platform.The status information includes ADB shell CAT/proc/kmsg, ADB shell dmesg, ADB shell dumpstate, ADB shell dumpsys, ADB bugreport, and project mode. 2. Log Capture details(1) Real-time PrintingADB logcat-B Main-V time> app. Log print Application Log ADB logcat-B radio-V time> radio. Log prints rf-related logs. Sim STK will also be in it,

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