Data passing to another application in Android

Question

I have two Android Application(Application A,Application B) as shown in below figure. I want to call application B by clicking on Button from first Application A and when Application B launches then the text box will contain the text which I want to pass from Application A.

**Note-

1. I have access of Application A so I can modify the code of Application A . I have no access to application B.

2. I have seen many post on Stackoverflow.com and other sites that explain passing data to second application but I saw it is only possible when you have access to modify the code of both class. Here in my case I have no access to Application 2, It is just a APK which is installed on my phone.

3. I want to just implement like we did in automating a web page through Selenium where we can access a text field and enter value in that text field and .

4. Application B only for example purpose. It can be any Application having text boxes.

5. Actually I want to automate the login process of an application(Applicaion B) with the help of Application A .Application A have a number of credential and by selecting a credential from Application A it will launch the Application B and enter the credentioal to Login screen of Application B . **

Hope I am able to explain my problem.If some more input require I can explain.

Answer 1

You have 2 options:

• Application B expects an input (via intent). Then you can launch the app B and pass the value via intent:

  intent.putExtra("Key", "Your data here");
  

  You need to know which key the application B uses, otherwise you can't do this.

• Application B doesn't expect an input. This is not easy and requieres root-access to the phone:

  With the permission INJECT_EVENTS it is possible to type text or send clicks to any window. You can do this:

  Instrumentation m_Instrumentation = new Instrumentation();
  m_Instrumentation.sendKeyDownUpSync( KeyEvent.KEYCODE_B ); //send key B
  

  you can find more to this topic here. If you need help to compile your app, these 2 links will help you: How to compile Android Application with system permissions, Android INJECT_EVENTS permission

Answer 2

Pass the data to the below intent. And then get it from the other app.

PackageManager pm = context.getPackageManager();
Intent appStartIntent = pm.getLaunchIntentForPackage(appPackageName);
context.startActivity(appStartIntent);