I'm trying to write a custom compound view composed by a TextView and an EditText, _compound_view.xml_:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/compoundText"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Label" />
<EditText
android:id="@+id/textEdit"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="enter text here" >
</EditText>
and this is the class extending LinearLayout:
public class CompoundView extends LinearLayout {
public CompoundView(Context context, AttributeSet attrs) {
super(context, attrs);
readAttributes(context, attrs);
init(context);
}
public CompoundView(Context context) {
super(context);
init(context);
}
private void init(Context c) {
final LayoutInflater inflater = (LayoutInflater) c
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.compound_view, this);
}
}
Now, if I use 2 of these View in my _activity_main.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"
tools:context=".MainActivity" >
<it.moondroid.compoundview.example.CompoundView
android:id="@+id/compoundview1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true" />
<it.moondroid.compoundview.example.CompoundView
android:id="@+id/compoundview2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/compoundview1" />
</RelativeLayout>
and in the Activity code I only inflate the RelativeLayout, without managing onSaveInstanceState:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
then when I write something in the 2nd EditText and I rotate my device, the same text appears in the EditText of the first custom View.
Why is happening this behaviour?
EDIT:
I solved the issue by removing android:id and using android:tag for the EditText in compound_view.xml, then managing the saving of the EditText state in CompoundView class:
@Override
protected Parcelable onSaveInstanceState() {
Bundle bundle = new Bundle();
bundle.putParcelable("instanceState", super.onSaveInstanceState());
bundle.putString("currentEdit", mEditText.getText().toString());
bundle.putBoolean("isFocused", mEditText.hasFocus());
return bundle;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
if (state instanceof Bundle) {
Bundle bundle = (Bundle) state;
mEditText.setText(bundle.getString("currentEdit"));
if (bundle.getBoolean("isFocused")) {
mEditText.requestFocus();
}
super.onRestoreInstanceState(bundle.getParcelable("instanceState"));
return;
}
super.onRestoreInstanceState(state);
}
