Android Programming Tutorials

Turn, Turn, Turn

Step #2: Pour the Form Into the Bundle...........................................

Now, fill in the details of onSaveInstanceState(), putting our widget

contents into the supplied Bundle:

@Override

public void onSaveInstanceState(Bundle state) {

super.onSaveInstanceState(state);

state.putString("name", name.getText().toString());

state.putString("address", address.getText().toString());

state.putString("notes", notes.getText().toString());

state.putInt("type", types.getCheckedRadioButtonId());

}

Step #3: Repopulate the Form...........................................................

Next, we need to make use of that saved state. We could do this in

onCreate(), if the passed-in Bundle is non-null. However, it is usually easier

just to override onRestoreInstanceState(). This is called only when there is

state to restore, supplying the Bundle with your state. So, add an

implementation of onRestoreInstanceState() to DetailForm:

@Override

public void onRestoreInstanceState(Bundle state) {

super.onRestoreInstanceState(state);

name.setText(state.getString("name"));

address.setText(state.getString("address"));

notes.setText(state.getString("notes"));

types.check(state.getInt("type"));

}

At this point, you can recompile and reinstall the application. Use -