#ANDROID EFILE APP HOW TO#
#ANDROID EFILE APP APK#
#ANDROID EFILE APP INSTALL#
#ANDROID EFILE APP ARCHIVE#
#ANDROID EFILE APP ANDROID#

#ANDROID EFILE APP APK#

apk file, you have to make sure that there are no certificates available in the. apk using the newly created certificate.Д«efore signing the. You can enter any arbitrary data here, you only have to make sure to remember the password.ДЄfter youвЂ™ve executed the command, youвЂ™ll see the generated keystore file on your file system in the current directory (from where youвЂ™ve executed the command) When executing the command, youвЂ™ll get several prompts on the command line, asking for password, username, organization, city, etc Keytool.exe -genkey -v -keystore mykeystore -alias myAlias -sigalg MD5withRSA -keyalg RSA -keysize 2048 -validity 10000 Note that the parameters sigalg and keyalg are required by JDK 7, so it shouldnвЂ™t be necessary to add them if youвЂ™re using JDK 6 I think it should be high enough in order to avoid trouble with expiration. The alias is the human readable name of the certificate which will be created and stored in the keystore. Here as well, you can provide an arbitrary name for the alias. (I havenвЂ™t tried it, but probably you can enter the name of an existing keystore file, in order to store the new certificate there) The file will be created in the current directory. The name that you provide here will be the name of the keystore-file that will be created. Here, you can provide an arbitrary name for your keystore.

Please note that you have to adapt some of the parameters of the above command to your personal needs: Keytool.exe -genkey -v -keystore -alias -sigalg MD5withRSA -keyalg RSA -keysize 2048 -validity 1000 However, before executing it, please check the notes below, in order to adapt the parameters Now you can generate a certificate using below command. You can find it in the вЂ¦/bin folder of your JDK installation. The JDK comes with a tool to manage certificates: the keytool.

If youвЂ™re working in a Java environment, you have the JDK on your file system. apk with the created certificateД«oth steps are done with commands on the command line ThatвЂ™s comfortable, but with the following description, everybody is able to sign an application.Д«) sign the. When developing an app in Eclipse, the ADT (вЂњAndroid Developer ToolsвЂќ, the extension to Eclipse that supports development for Android) takes care of signing the app with a default certificate, before installing in on the device.

#ANDROID EFILE APP INSTALL#

apkДЄndroid doesnвЂ™t allow to install an application (apk) that isnвЂ™t signed. In case you had changed the file extension before, you now have to change it back to. The following screenshot displays the content of the META-INF folder in an. Inside the archive, go to folder META-INF Once youвЂ™re done with your changes, you have to take care about the signature files that are part of the.

#ANDROID EFILE APP ARCHIVE#

zip)Д¬hange the resource in the archive as desired (packager tools allow to change files without the need to extract the archive) apk file with WinRAR (if that doesnвЂ™t work, rename the file extension. Do the actual desired modifications inside the. There are 3 steps that need to be followed in order to modify an existing. In order to execute the commands described below, you need to have Java on your PATH variable of your Windows system (see for an explanation). If you arenвЂ™t familiar with Android, but wish to be, you might want to check the documents and ДЄll prerequisites for understanding this blog are explained there. The description is based on the following software and versions:

#ANDROID EFILE APP HOW TO#

So I had to figure out how to achieve that: modify the app without having access to the source code.Д«elow, IвЂ™m sharing the required steps with you. apk file.Д«ut there was the requirement that they wanted to modify the ready application (change configuration data). I had to deliver the application to my users as.

#ANDROID EFILE APP ANDROID#

I had created an Android application using SAP Netweaver Gateway Productivity Accelerator. вЂ“ property files containing configuration data вЂ“ files which are placed in the assets folder However, thereвЂ™s still the valid use case to modify or replace files inside an existing. The reason is that after the modification, the checksum and the signature are not valid anymore. The following screenshot displays the error when installing the modified sample application myApp.apk on an Android device: apk on the smartphone (or tablet or similar), youвЂ™ll get an error. So you can easily open it and view the files вЂ“ although viewing most of the files wonвЂ™t make you happy, because youвЂ™ll realize that theyвЂ™re compiled, in binary format, etcДЄnyways, you can open the archive and then modify any resource file and save the modification in the archive.Д«ut if you afterwards try to install the. apk file is a simple archive that can be opened with any packager like e.g. apk file represents the mobile application as it is installed on a mobile device, like smartphone, tablet, wearable, etc.

Today IвЂ™d like to share with you my findings about how an existing.

Android efile app