Hello I am trying to build an app which will hold "other app's"
For example MY app will hold different apps of different ClIENTS.
Now i want to make it so that 1 client has the option to only download his part, BUT he still has to use MY main app. (in other words i don't want to reference to another APK, cause then he can start his app without using mine(i think))
And the download option should be at runtime, cause else he has to download everything in one go.
I have thought about using jar files as library files, but what i found so far is that you have to add them in Eclipse (else they are not found)
I also thought about building the app with the jar files in it, and then leave them out when i compile the app. Then my client can download those files afterwards. But i am guessing that will cause reference errors?
So the questions are;
Is it possible?
How to go about?
The main idea is that i don't want to make one HUGE app where as my client will only use his part of it.
Thanks in advance
It can be achieved in android, and some big platform apps could let the 3rd party developers to develop plugins for them. The main idea is try to create your own DexClassLoader to replace the default one, the custom DexClassLoader could load classes from apkfile.
Try to look through this article for details.
Same with this question.
It seems this is a difficult topic. I can only give you some point.
Since you don't want to make a huge app, then you have to build CLIENTs as separate APKs. But if you don't define CLIENT's activity as MAIN and DEFAULT in manifest, after install CLIENT app, user could not find CLIENT app from system menu (launcher). You can define a private intent name for CLIENT app's activity, this way, only your main app could start CLIENT app's activity.
Related
Objective:
I have an android application (main) from which I want to download (jar, apk, or any sort of package) and load the package dynamically and start the main activity of my loaded package from my main application.
The solutions I have tried:
I have followed this blog post and try to load the app using DexClassLoader https://medium.com/#kalpeshchandora12/dynamic-code-loading-in-android-dea83ba3bc85#:~:text=DCL(Dynamic%20code%20loading)%20allows,location%20and%20executed%20at%20runtime. I am able to follow all the step and able to load the class from the downloaded apk, now I don't know how to call the main activity of the loaded apk.
I have followed this plugin(https://github.com/DroidPluginTeam/DroidPlugin), which is telling me that I can dynamically load the apk from the server, and then I can install it in the background and then can run it by any communication method (broadcasting, AIDL, etc.) but while following the plugin, I have encountered an error (sort of I/O error while opening APK), it's not able to open my apk for installation.
I don't know if whatever I tried is correct or not and I am not an android guy, instead, I am a unity guy and trying to run my games (I have almost 50) within android applications. There is no choice of loading the game statically in the android project because it severely increases the size.
Please recommend me an approach to achieve this task or if anyone can guide me on how to solve the problems that I am facing.
It sounds like you need look at Feature Delivery.
I've been pulling my hair out all day. I'm converting my WPF app to Xamarin.Forms (UWP, IOS and Android). I'm currently focused on UWP and Android (don't have an apple devices yet) and I got a lot of the program running but I ran into a huge snag with reading files that are not in my sandbox directory. Currently, my app allows you to choose a folder with images and you can move through them. To test out the reading functionality, I've placed the images into the "LocalState" directory and bingo, my code is working beautifully. Now the program doesn't have a default folder and when I originally created it in WPF, the user would have a pop up and they would choose their own folder but I cannot for the life of me get a similar function for Xamarin. Every time I try something, I get an "access denied". I've seen Android apps allow you to pick a folder for emulators and I'm 100% sure that you can setup UWP to do permissions with StorageApplicationPermissions but I just cannot get this to work for Xamarin.Forms. Please help me!
OK, Android first it is easier. You need to setup in the manifest permissions to read and write SD-card. On Marshmallow and later you need to ask for the permission at the runtime (you need to do that from the native project).
On UWP the easiest thing to do would be to set the broadfileaccess in the manifest. Other than that you pointed out to the proper APIs, just you need to run them natively.
In general native code is called by using dependency injection. If it gets too complicated you may consider to create Xamarin.Forms project as a shared project where you can use conditional compiling instead of dependency injection which is quite simpler.
I'm trying to install Kik Messenger twice. I have two accounts and don't like to log out because I lose all of my conversation history. I'm currently using Titanium backup's profile feature, which is a very nice fix, but it's still a pain having to switch back and forth between profiles. I might be looking for "perfect" when perfect doesn't exist. I am completely new to modding apks and Android in general, all of my work on this so far has been "trial and error". Anyways, here's what I have:
I have the Google Play version of Kik installed on my phone. I have extracted that app and modified the package name successfully using apktool. However, when I try to install, I get an error saying something about duplicate provider authority. So I did some research and learned that I'm supposed to edit this part of the AndroidManifest. So I have played around with that a little bit and after I change the authorities, I am able to install the modded app. However, it crashes immediately.
Does anyone know how to fix this problem with the provider/authorities?
The issue you're hitting is that the app has registered certain classes to handle particular events. These need to be unique across all installed apps and point to existing classes in the app that will perform some activity with the supplied information.
You bypassed the safety check when installing by changing the defined handlers in the Manifest but that didn't really fix it as they still need to actually point to a valid, working class that can handle the requests/events.
You would need to decompile, rename the classes involved and all references made to them and recompile the whole app to really fix the problem. However, I'd assume that it would likely be against the license. If the code is open source then it wouldn't be too big a task to rename some classes & packages then build the app. If it's closed source then it is a harder task.
What you can do is either set up your device to use multiple accounts (the OS not the app) as each user has a separate data storage and preference location that should allow you to have two configurations. Or you can request that the developers include some sort of multiple account handling or easy account swap feature.
I am working on an android group project in college and this is the first big project many of us have worked on.
We worked on implementing several pieces of the project as completely separate projects and now are having trouble putting all of them in one application with a main page.
On the main page of the application we would have a bunch of buttons that would then go to the implemented project that we've completed (example, I click on BMI calculator on the app homepage and it goes the the bmi calculator screen).
Any efficient way of going about this that can be explained in an easy to follow manner? I'm still a newbie programmer :)
Just to clarify, I don't want it so that it just launches a BMI calculator app from the main app, the entire code base is supposed to exist under one app.
Thanks
You can have a main project and several other projects declared as library projects.
In build time, library projects are pulled into the main project and only one apk will exist as the output.
The library projects are almost the same as an usual android project. You can have java packages, res folder, lib folder, etc.
Check here for the official description.
Check here for a tutorial.
Look into making the other applications as Android Library-projects, and listing all necessary components on your AndroidManifest.xml on your parent project.
Another way would just give the option for the user to install these applications as separate and have a logice (PackageManager) check if specific application exists or is installed and then enabling navigation buttons or disabling components and invoke them via Intents.
I have a project “Abc12” which contains App “TypeYourName”.
Also I have another project “Xyz12” which contains a Service like “MySoftKeyboard”, which is NOT a library type project.
I’d like to associate project “Xyz12” to project “Abc12”, so when user downloads App “TypeYourName”, App “MySoftKeyboard” is also downloaded with it.
Any idea how can be done, if possible ?
I don't think you can do this as separate .apk files. (At least I'm pretty sure you can't do this either in the Android Market or the Amazon Appstore. I also don't know how you could side-load two apk files from the same link.) Create a single project that has your app and also has the service.
It might make sense to put all the code for the service into a library project. Then you could have the service available as a stand-alone project and also bundled with other applications.
You can't. The best you can do is within Abc12, query the package manager for Xyz12, and if it is not present, prompt the user to download it. Make Xyz12 a service or define the proper intent so that ABC12 can access it.