how to open unsupported files on android

read and written by other applications, you can pass in: Openfileoutput ("Ljq.txt", context.mode_world_readable + context.mode_world_writeable);Android has its own security model, and when the application (. apk) is installed, the system assigns him a userid, and when the application accesses other resources such as files, it needs userid matching. By default, any file created by the application, sharedpre

Hi everyone! Today, we mainly learn about the data storage mechanism of Android. There are four main methods. Today we will introduce shared preferences, files, and network. Next we will introduce the SQLite method. As an example, it is easy: It toilet experienceOne day, I went to the computer city and suddenly felt a stomachache. Bad. You need to go to the bathroom.Before arriving at WC, I looked up a

code) Procedure: Download the decompilation toolkit and open the apktool1.4.1 folder under the apk2java directory, which contains three files: aapt.exe, apktool. bat, and apktool. jar. Note: apktool_bk.jar is the old backup version. It is best to use the latest apktool. jar Go to the apktool. bat folder under the command line and enter the following command:Apktool. bat d-f abc123.apk abc123Such: Apktoo

Link: http://blog.csdn.net/wuxianglong/article/details/6335683 In many cases, we need to access the resource files in Android. These resource files are mainly divided into two types, these files are not compressed when they are packaged into APK files; the other is

Onsheetitemclicklistener () {@Override public void OnClick (int which) {}}]. Show (); Break //Setnegativebutton relative Setpositivebutton color to shallow some case r.id.btn:new alertdialog (mainactivity.this). Builder (). Settitle ( "Exit current Account"). Setmsg ("Again consecutive landing days, the variable as QQ talent." Exit QQ may make your existing records return to zero, OK exit? "). Setpositivebutton (" Confirm Exit ", new Onclicklistener () {@Override public void OnClick (View v)

Plist, or property list, is a common storage file format used in Apple mobile phone software development. Its essence is XML files, but it follows a certain format. For example, it contains some specified elements, such as plist, array, string, and key. Apple provides a mechanism for parsing such files, but it is a pity that it is not provided in Android developm

First, use the Pull parser to read XML files In addition to using SAX or DOM to parse XML files, you can also use the Android built-in pull parser to parse XML files. The pull parser is an Open-source Java project that can be used for both

Android XMl parsing magic xstream 4: parse complex xml files into objects, androidxstream For more information about xstream, see: Android XMl parsing magic xstream 1: parse the aa. xml file in the asset folder of the android Project Android XMl parsing magic xstream 2: Conv

Android uses SVG resource files (1) and androidsvg I will not introduce the background here. Let's talk about how to use SVG resources in Android!Procedure:1. source file of the SVG ResourceTo use SVG resources, we must first have svg resources. Where can we find them? There are many tools that can generate SVG resources, such as the omnigraffle graphic editor.

classes. dex.(2) Use the android-reverse-trinea \ dex2jar-0.0.9.13 in the Toolkit or download the latest dex2jar and unzip it and run Dex2jar classes. dex path 1 Dex2jarClasses. Dex path As follows: As follows: Classes_dex2jar.jarwill be generated in the classes.dex directory. Open this file with jd-gui.exe (use jd-gui in the Toolkit or download the latest version), as shown below:We can

Reading MMS files in Android apps involves a database/data of Android/COM. Android. providers. telephony/databases/mmssms. dB and a folder/data/Data/COM. Android. providers. telephony/app_parts. To back up MMS, you can copy the database and folder to the hard disk, but in th

Opencv provides several classifiers, which are described by character recognition in routines. 1. support vector machine (SVM): Given training samples, the support vector machine creates a hyperplane as the decision plane, this maximizes the isolation edge between the positive and negative examples. Function prototype: training prototype cv2.SVM. train (trainData, responses [, varIdx [, sampleIdx [, params]). trainD has the following xml files:

Android file operations-read the content in assets and raw files, androidassets 1. Create the assets folder and res/raw folder respectively. (Note that the raw file is new under res and a folder named raw is created) 2. Create two txt files and copy them to the asset and raw folders: 3. Implementation results: 4. Implementation Code: (1) Layout file: 1 View

database file here.. Res/raw can not have a directory structure, and assets can have a directory structure, that is, assets directory can be set up folder-----------------------------------------------------------------------------------In many cases, we need to access the resources files in Android, these resource files are mainly divided into two categories, o

Exporting a jar file in Android Studio is not as simple as it is in eclipse, but it's not too complicated. You need to export the jar file using the Gradle script.We don't want to export jar files with classes like R.class and buildconfig.class, so we need to write Gradle scripts to implement custom JAR file content.First open the Build.gradle file under the modu

(s ,"");} Catch (Exception e ){E. printStackTrace ();}} Orz, did you find anything? By the way, these two functions have nothing to do with Android ..So they can also be used in other standard java programs.In Android, compared to reading and writing strings only and parsing them themselves, or saving the configuration with xml,Properties is simpler and more intuitive, because self-parsing requires a lot o

possible ways to duplicate a package name.1, one is two jar name, in Lib can look at, if there is the same, delete a.2. This is a situation that everyone should be aware of. Sometimes the jar name is different, but will also report this error, because the two jar inside the package name has the same. This requires us to open the jar and see if the package name is duplicated.In the case of Android_services_2.2.0.jar and Android_location_v1.1.2.jar, th

This article illustrates how Android programming uses HTTP protocol and TCP protocol to upload files. Share to everyone for your reference, specific as follows: There are two ways to upload files to Android, the first is based on the HTTP protocol httpurlconnection, and the second is the socket based on the TCP protoc

As Appium learning needs to install some mobile apps for testing, here's a brief introduction to the installation and uninstallation of applications in the Android simulator.First, you need to download the application to test the APK file, here to YY voice for example, after downloading the apk file in the%android_home%\platform-tools directory.　　Then open the Android