Android save TextView background color on screen rotation

Question

Problem is that, when screen changes orientation, textview background color is gone. here is TextView definition:

<TextView
    android:id="@+id/nomResult"
    android:layout_width="fill_parent"
    android:layout_height="80sp"
    android:text="Nom result"
    android:layout_below="@id/svitrkods"
    android:layout_alignRight="@+id/svitrkods" 
    android:layout_above="@+id/exit_button"
    android:freezesText="true"
    />

App is inventory app. When product is already in inventory, then i am displaying text in textview with red background. vaiIrInvent.setBackgroundColor(0xfff00000); that works. but when screen rotates, background color is gone... When application stars, i save original background color of textview defBackColor = vaiIrInvent.getBackground(); then in app i am switching to red or default.

if (isInInventory)
{
    vaiIrInvent.setBackgroundColor(0xfff00000);
}
else
{
    vaiIrInvent.setBackgroundDrawable(defBackColor);
}

Maybe there is some option like android:freezesText ? Thanks.

score 1 · Answer 1 · edited May 23 '17 at 12:27

1

yup rotion calls onCreate() you need to save information to restore preferences

this link should explain it a little better

Saving Android Activity state using Save Instance State

edited May 23 '17 at 12:27

Community

1
1

answered Oct 06 '11 at 17:45

DJPlayer

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I this already found, now i am looking how to save Drawable object I am thinking that my problem is little bit bigger. because i have 2 views. one in layout folder and one in layout-land. when screen rotates i need figure out if background is set and then pass background to landscape layout. Or its not good idea? – Guntis Oct 06 '11 at 18:14
problem is much bigger than i think. when screen rotates, all variables are gone. I need trigger action to edittext to re-query database. tomorrow i will continue to search some solutions. variables data i can save in `onSaveInstanceState` . Of course i can lock app in horizontal or in vertical, but i don't like that solution.. – Guntis Oct 06 '11 at 18:55

score 0 · Answer 2 · answered Oct 06 '11 at 17:34

It looks like you lose isInInventory state on rotation because by default OS creates a new Activity instance in this case. If this is the case, then the best way is to use save/restore state callbacks the Activity class exposes. Check this for details: Saving activity state.

score 0 · Accepted Answer · answered Oct 07 '11 at 12:59

Answer to my situation is: save scanned barcode when screen orientation changes

@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
  // Save entered code 
  savedInstanceState.putString("svkKods", svkKods.getText().toString());
  super.onSaveInstanceState(savedInstanceState);
}

and restore code and query db.

@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
  super.onRestoreInstanceState(savedInstanceState);
  // Restore UI state from the savedInstanceState.
  // This bundle has also been passed to onCreate.
  String mystr = savedInstanceState.getString("svkKods");
  svkKods.setText(mystr);
  //if code presents 
  if (mystr.length() > 3) FindKods(mystr); //query database and fill all texts and variables
}

i am doing this way because in a variable is stored state, when barcode is found in database and then user can submit changes. otherwise is displayed message to must find barcode ...

Android save TextView background color on screen rotation

3 Answers3