Android Form with EditText makes the screen flash - android-layout

Question

I don't know why my "Forms" activity are flashing when an EditText are focused and then a layout is scrolled.
It just happen in devices with Android 4.0 +
I am using a Table Layout and adding TableRow dynamically.
My TableRow is like that:
<TableRow xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/tableRow1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#drawable/borda"
android:layout_margin="10dip"
android:paddingLeft="10dip"
>
<LinearLayout
android:id="#+id/l1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginTop="15dip"
android:layout_marginBottom="15dip"
>
<TextView
android:id="#+id/label"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/nome"
android:textStyle="bold"
android:textColor="#526691"
android:textSize="15sp"
android:paddingLeft="10dip"
android:paddingRight="5dip"
/>
<EditText
android:id="#+id/valorLabel"
android:layout_width="140dip"
android:layout_height="wrap_content"
android:textSize="15sp"
android:background="#ffffffff"
android:singleLine="true"
android:inputType="textCapSentences"
android:textColor="#777777" />
</LinearLayout>
</TableRow>
Then,I add the TableRow into a TableLayout....
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:cacheColorHint="#00000000"
android:background="#dddddd">
<TextView
android:id="#+id/add_instancia_tv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/add_fornecedor_informacoes"
android:textColor="#4c566c"
android:textStyle="bold"
android:paddingLeft="20dip"
android:paddingTop="20dip"
android:textSize="20dip"/>
<TableLayout
android:layout_width="fill_parent"
android:id="#+id/table_novo_registro1"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="#dddddd" >
...
Then,in the code, i inflate my TableRow
TableRow colunaNome= (TableRow) getLayoutInflater().inflate(R.layout.tablerownovocampo, null);
LinearLayout linearlNome= (LinearLayout)colunaNome.getChildAt(0);
TextView textvNome=(TextView)linearlNome.getChildAt(0);
textvNome.setText(R.string.nome);
etNome=(EditText)linearlNome.getChildAt(1);
And a lot of TableRow are added.
The Question is...
Why are my Form flashing( blinking) when I scroll it? And Why does it happen only in Android 4.0 +?
I already saw this post ....
http://android-developers.blogspot.com.br/2009/01/why-is-my-list-black-android.html
but I am not working with ListView.
I'v already tried
android:cacheColorHint="#00000000"
in the TableLayout but, it didn't work.

Answer 1

This will 100% work .....
ScrollView sv=(ScrollView) findViewById(R.id.scrollView1);
sv.setOnTouchListener(new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
edttext.clearFocus();
return false;
}
});