lose content when change orientation in my list view and in forms android - android-listview

Question

okay guys, i know that have couple topics with the same purpose, but i'm new on android, and the topics that i found just created more mess in my mind, so thats why i'm here;
I got an app with 5 Activitys(fragments) 2 are list views, and 3 are forms, i'm populating my list views with the content from 2 of my forms;
And the problem is when i change my orientantion i loose everything as everybody knows, but i don't know what and where i need to set some configurations that i found in my research for example: i saw a lot examples implementing this:
<activity
android:name="com.abc.src.MainActivity"
android:configChanges="keyboardHidden|orientation|screenSize"
/>
as a solution but many others said that this is not enough, and after this i need to implements one method ex:
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
if(newConfig.orientation==Configuration.ORIENTATION_LANDSCAPE){
// set visibility visible of Layout in which your list fragment resides
}else if(newConfig.orientation==Configuration.ORIENTATION_PORTRAIT){
// set visibility gone of Layout in which your list fragment resides
}
}
And the last one, which one makes more sense to me, but i don't know exaclty how and where to implement is:
public void onSaveInstanceState(Bundle savedInstanceState) {
savedInstanceState.putString("MyText", edtMyText.getText().toString());
}
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.my_activity);
if (savedInstanceState != null) {
String myString = savedInstanceState.getString("MyText");
edtMyText.setText(myString);
}
}
#SuppressWarnings("unchecked")
#Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
???(what and where i need to set) ???
}
This last one makes more sense to me in my forms case, that i can get the values of my sppiners and editTexts and save them into a string, but i can't figure out how can i save the items of my list views with this example,
the question is, i understand the purpose of the methods above, but i don't know where i need to implement,
i'm following the MVC pattern, so i guess i need to insert these methods in my view classes right ??
And all my activites is just calling my fragments so i need to set the StateChange methods, in my fragments class or my Activities classes ?
Any helps or solutions will be appreciate, so if you guys need i can update my post with my class code... thanks

Answer 1

Do not override any of the config changes. Android will handle it for you, especially when it comes to Views. Only under the most specific (not common) edge cases should you be overriding config changes. Remove everything you posted. You'll find that all Views will be recreated accordingly, to include the text in EditText widgets. If not, then your problem lies else where.