将数据从子活动传递到父活动

Question

I've seen this thread: Android: how to use data passed from parent activity in a sub activity? and ready about this method, but I'm wondering if this is outdated. Android has made a lot of strides since then and I don't want to do this the wrong way.

Is this still the method that should be used?

Answer 1

This method is perfectly fine and is still used today. There is one more way in which you can pass the data using Bundle . Bundles can be used as follows

        Intent intent = new Intent(ActivityA.this, ActivityB.class);  
        Bundle b = new Bundle(); 
        b.putString("name", "abcd");
        b.putInt("value", 666);  
        //Add the set of extended data to the intent and start it
        intent.putExtras(b);
        startActivity(intent);  

And in the other activity use

    Bundle b = getIntent().getExtras(); 
    int value = b.getInt("value", 0);
    String name = b.getString("name");