how to pass value data between classes/activity in Android?

Question

For example i have activity1, activity2, activity3 and lastly valueAllActivity? how do I pass the data from activity1, activity2, activity3 to --> valueAllActivity?

Answer 1

You have some possibilities.

One that I like more is using the application context...

Create a new class like:

public class DataApp extends Application{

    private int myInt;
    private MyCustomObject myObj;


    public int getMyInt()               {   return myInt;           }
    public void setMyInt(int i)     {   this.myInt = i; }
    public MyCustomObject getMyObj()                {   return myObj;       }
    public void setMyObj(MyCustomObject ob)     {   this.myObj = ob;}

}

Add this to you manifest:

...

    

After, when you need to pass data you can do this in your activity:

DataApp dataInfo = (DataApp)getApplicationContext();

//set some data:

dataInfo.setMyObj(/*put the object*/);

In your other activity, you get you object like this:

DataApp dataInfo = (DataApp)getApplicationContext();
MyCustomObject obj = dataInfo.getMyObj();

With this option, you can pass every object type you want.