从一个片段发送数据以在另一个片段的列表视图中显示

Question

Scenario is: I have two fragments FragmentA and FragmentB. In FragmentA, I have a simple form and in FragmentB, I am showing data of that form in ListView.

I am getting data in listview but not in real time. Like first I insert data, then, I restart Application to see data in list.

My question is how to notify change from one fragment to another in real time.

Answer 1

you can use listener in your activity and then notify:
class MyActivity extends Activity {
FragmentA fragA;
FragmentB fragB;

public void notifyB() {
    fragB.notifyB();
}

class FragmentA extends Fragment{
 private void notifyB(){
     ((MyActivity) getActivity()).notifyB();
 }
class FragmentB extends Fragment{
    public notifyB() {
         // do something
    }
}

Answer 2

After setting the variable of the FragmentTransaction you can do like this:

Bundle bundle = new Bundle();
bundle.putString("flag", variable)// You can pass Strings, Int, Boolean. 
//The "flag" is the key to get the value in the other fragment.
//The variable is wat you need to pass to the other fragment.

In you new fragment you can get your viable like this:

Bundle bundle = new Bundle();
String a = bundle.getString("flag");
// now you have te value in the variable a

this works in eclipse