Preserving fragment state across orientation change when using different layouts for different orientations
I have different layouts for portrait and landscape mode. layout\activity_main.xml
:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<FrameLayout android:id="@+id/container"
android:layout_height="match_parent"
android:layout_width="match_parent"/>
</RelativeLayout>
And layout-large\activity_main.xml
:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<fragment
android:id="@+id/fragment1"
android:name="com.example.fragmentorientationchangetest.Fragment1"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1" />
<fragment
android:id="@+id/fragment2"
android:name="com.example.fragmentorientationchangetest.Fragment2"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1" />
</LinearLayout>
My fragments are the same fragment1.xml
and fragment2.xml
:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
>
<TextView
android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Fragment 2" />
<EditText android:id="@+id/input"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="4dp"
android:layout_below="@+id/text"/>
</RelativeLayout>
I want when I enter text into edit text in my snippets and I rotate the screen, the edit text does not lose the input text.
Since the fragments in portrait and landscape modes are not one instance, I cannot use setRetaintInstance
or onSaveInstanceState
. How can I do this without defining two actions and without using it onConfigurationChanged
?
Note. Without adding code, each chunk retains its data. So if I enter some text in snippet2 in portrait mode and turn to landscape and go back to portrait mode again, I see the text I entered.
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Since I code more, I sometimes ignore a simple idea like:
SharedPreferences myText = getSharedPreferences("txt", 0);
SharedPreferences.Editor editor = settings.edit();
editor.putString("userText", "Your text that you want to save");
editor.commit();
and reading:
SharedPreferences myText = context.getSharedPreferences("txt", 0);
String userInput = myText .getString("userText", "");
then set your edit text to match userInput
.
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