Pass data through app android

Question

I want to pass Object from App1, App2, App3 --> AppG. In particular:

App1, App2, App3 can secure save Object.

AppG can read this Object and do stuff.

I read about ContentProvider, Meta-Data, Parcelable, SharedPref and so on but nothing do what I need, some of those required app signed with same key, other hasn't safe.

Hard to tell what you're asking but ContentProvider seems correct. — OneCricketeer, Dec 11 '16 at 19:47
Otherwise, just write data to a public directory on the SD card — OneCricketeer, Dec 11 '16 at 19:48
I need to write `Object` with listener and so on...In SD card isn't safe.. — Michele Lacorte, Dec 11 '16 at 19:49
I mean with `OnClickListener` interface implementation for example — Michele Lacorte, Dec 11 '16 at 19:55
I don't think you can keep that interface across serialization — OneCricketeer, Dec 11 '16 at 19:55
I want to save `Object` because this app called for example "client" can save their implementation of `Object`, so now app called for example "server" can read this implementation of `Object` — Michele Lacorte, Dec 11 '16 at 19:58
You need to provide code samples of what you have implemented. Throwing around abstractions like `Object, Client, Server and App` tells us nothing. People will just start recommending their favorite serialization frameworks, which is not an answer. — Dominic Cerisano, Dec 11 '16 at 20:39
@DominicCerisano My Server Client etc is just an example...I can write general Object class and post here, but this doesn't matter... — Michele Lacorte, Dec 11 '16 at 20:55

score 2 · Accepted Answer · edited May 23 '17 at 11:45

2

There are a lot of ways to communicate between two apps but if you need:

Pass an Object that you've created (Not from Java/Android).
Create a callback (e.g OnClickListener) over IPC.

There are much less options that will work for you, follow the next steps:

Use AIDL to speak between the apps. AIDL will provide a very raw mechanism to pass data between apps with different processes.
In-order to be able to pass your Object between processes implement the Parcel class.
To create a call back you need to create another parcelable object as your callback interface and set it as a return value(Guide)

edited May 23 '17 at 11:45

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answered Dec 11 '16 at 20:37

Nir Duan

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I got this error while generate .java file from .aidl `Error:Execution failed for task ':library:compileReleaseAidl'.` I build with API 25 and build tool 25.0.0 – Michele Lacorte Dec 12 '16 at 10:50

Pass data through app android

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