Data sharing between two application in android

Question

I have two application..

One for main application.. another one for title changer..

If I enter the title in one application it affected in another application..

What I am tried,

I already done by store database in SD card..And refer title using DBHelper.

My problem,

But now my database moved into main application.. so I cannot refer database from title changer application.

My question,

Without database creation can I pass data between two application..like intent or shared preferences?

Note: both application stored in same device..

possible duplicate of [Data sharing between two applications](http://stackoverflow.com/questions/5745243/data-sharing-between-two-applications) — atastrumf, Feb 07 '15 at 08:25
And even better reading: https://developer.android.com/training/building-content-sharing.html — atastrumf, Feb 07 '15 at 08:26

score 1 · Answer 1 · answered Feb 07 '15 at 08:34

1

You have multiple ways to achieve this.

Usage of Content Providers
Shared Preferences with MODE_WORLD_WRITEABLE
Whenever content is changed in one app, send a broadcast intent which can be read by the other app using a receiver.

answered Feb 07 '15 at 08:34

Seshu Vinay

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thanks for your answer.. I get answer from your 2nd point..But it cannot used in api level 17.. – Ranjithkumar Feb 07 '15 at 12:57
1

Oh! My bad, I didn't know that it's deprecated. – Seshu Vinay Feb 08 '15 at 11:17
BTW, CONTEXT_IGNORE_SECURITY and MODE_WORLD_WRITEABLE share same constant value 2. So you might use it as it's not deprecated. – Seshu Vinay Feb 08 '15 at 11:38
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Context.MODE_PRIVATE is secure & professional... I get answer.. see my answer below.. – Ranjithkumar Feb 08 '15 at 11:49
Great! I never knew about shared ids. – Seshu Vinay Feb 08 '15 at 13:25

Ranjithkumar · Accepted Answer · 2015-03-20T15:33:45.227

Send data from Application 1 (for ex:Application 1 package name is "com.sharedpref1" ).

SharedPreferences prefs = getSharedPreferences("demopref",
                    Context.MODE_PRIVATE);
            SharedPreferences.Editor editor = prefs.edit();
            editor.putString("demostring", strShareValue);
            editor.commit();

Receive the data in Application 2( to get data from Shared Preferences in Application 1).

    try {
            con = createPackageContext("com.sharedpref1", 0);//first app package name is "com.sharedpref1"
            SharedPreferences pref = con.getSharedPreferences(
                        "demopref", Context.MODE_PRIVATE);
            String your_data = pref.getString("demostring", "No Value");
        } 
    catch (NameNotFoundException e) {
                Log.e("Not data shared", e.toString());
         }

In both application manifest files add same shared user id & label,

 android:sharedUserId="any string" 
 android:sharedUserLabel="@string/any_string"

both are same... and shared user label must from string.xml

like this example.

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.xxxx"
android:versionCode="1"
android:versionName="1.0"
android:sharedUserId="any string" 
android:sharedUserLabel="@string/any_string">

how to do with same android app but install on two different devices??? — Pranita, Nov 22 '17 at 07:28
@Pranita can you tell your exact need? If we need to communicate device to device use wifi,bluetooth,web-service,or firebase(Even same app). we can't use intent or sharedPreferences — Ranjithkumar, Nov 22 '17 at 13:02

score -1 · Answer 3 · answered Feb 07 '15 at 08:54

-1

You can use intents. You can send an intent from an Activity to an Activity in another Application and pass data as "Extras" in the sending intent. You have to create a new activity that uses a custom action with the default category. Chech Android Intents - Android Developers

answered Feb 07 '15 at 08:54

Hadi Chahine --Droido--

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1

An Intent is a messaging object you can use to request an action from another app component (Activities,Services,Recievers...) not only for the same application. – Hadi Chahine --Droido-- Feb 14 '15 at 09:28

Data sharing between two application in android

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