如何使用putExtra将数据发送到多个活动

Question

I have the following code:

Intent intent = new Intent();
                intent.setClass(getApplicationContext(), DetailView.class);
                intent.putExtra("position", Integer.toString(position + 1)); 
                startActivity(intent);

Here as you can see I am sending the value of position to a class named DetailView using putExtra. I want to send the same position to another class, I don't want to launch the activity, I want to just send the value of "position". Can any one of you please let me know how can that be done. All suggestions are welcome. Thanks in advance. Please let me know if more information is required.

Answer 1

If you don't want to launch other activity there are three options that i can provide you.

1. Create public static int position and access it view class name.

When setting value ClassName.position=value here..

When gettting from any class used as ClassName.position;

2. Create a class with setter and getter method.

3. Store value in sharedPrefrence

Update each above when your position value change.

Answer 2

Where else will this class that you need to pass the position variable be used?

If you are already creating a new instance of the class the best way might be to simply pass the value through a constructor.

Otherwise I would recommend adding either a public or public static method to the class that you want to receive the position variable.

public class PositionReceiver {
    private int mPosition; 

    public void setPosition(int position){
        mPosition = position;
    }

}

or

public class PositionReceiver {
    private static int sPosition; 

    public static setPosition(int position){
        sPosition = position;
    }

}